Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

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Session Overview
Date: Thursday, 18/Oct/2018
9:00am - 3:00pmWater Palooza
Session Chair: Steven Drangsholt, Brown and Caldwell;
Session Chair: Haley Falconer, City of Boise;

Held prior to the PNCWA 2018 Annual Conference as a way to serve and include the greater community. We have over 15 local partners signed up to join us at the event and share in our passion for Boise’s natural environment.

Taft Elementary School 
Date: Saturday, 20/Oct/2018
9:45am - 2:30pmFly Fishing and Riverbank Clean-up
Session Chair: Royce Davis, City of Boise;
Lander Street WRF (Starts at) 
1:00pm - 5:00pmPNCWA Board Meeting
Session Chair: David Keil, WR2 Development;
Offsite 
Date: Sunday, 21/Oct/2018
7:00amSpeaker Ready Room is Open

7:00 AM - 5: 00 PM

Boise Centre West 110C North 
7:30am - 10:30amFun Run for Water For People
Session Chair: Halley Kimball, City of Everett;

Race Check-in: 7:30am

Race Start Time: 8:30am

Start and finish at the Agriculture Pavilion at Julia Davis Park, just 4 blocks away from the Boise Centre.

Julia Davis Park (Starts at Agriculture Pavillion) 
9:00am - 4:30pmPrecon Workshop 1: Cogeneration – It’s a Gas! ...AKA The Feasibility of Cogeneration
Session Chair: Christina Davenport, City of Bend;
Boise Centre West 120A 
 
ID: 180 / Precon Workshop 1: 1
Sunday Oct. 21 Preconference Workshops Program
Keywords: cogeneration

Cogeneration – It’s a Gas! ...AKA The Feasibility of Cogeneration

Joel Borchers1, Anthony Tartaglione2, David L. Parry3, Jessica Bernardini4, Patrick Orr5, Peter Zemke6, Susan Hildreth7, Christina Davenport8, Jeremy Keller9

1Clean Water Services; 2Black and Veatch; 3CH2M now Jacobs; 4Cornerstone Engineering; 5Clean Water Services; 6Brown and Caldwell; 7King County; 8City of Bend; 9Ameresco; , , , , ,

This workshop will cover the components of cogeneration in an attempt to answer the question of the feasibility of cogeneration. There will be an overview of the costs associated with procuring, operating, and maintaining a cogeneration facility through its lifecycle.

Included in the analysis will be a list of benefits and revenue streams that can be generated to cover some or all of the costs associated with running such a facility. Alternatives to cogeneration will be discussed as well.

The workshop will include a discussion of costs, revenues, and benefits for plant managers and decision makers to help determine if co-generation is right for your facility.

Learning Objectives: Factors and means that go into the decision of whether to implement cogeneration at your facility.

Who Should Attend? Plant staff, plant managers, municipal decision makers.

Organized by Joel Borchers POM Committee (Clean Water Services) and Christina Davenport (Resource Recovery Commitee (City of Bend) Moderated by Susan Hildreth, Residuals & Biosolids Committee (King County) and Christina Davenport.

Agenda and Presentations

9:00 – 9:15 Introduction

9:15 – 9:45 Turn up the Heat - Anthony Tartaglione, Black and Veatch "This presentation will benefit utility managers and operational staff by providing guidance on how to improve project efficiency. Alternatives considered to increase the hot water supply and performance are discussed along with capital and life cycle costs for each. The approach described in this paper capitalizes upon operational staff knowledge to potentially utilize and integrate existing systems in the design increasing efficiencies."

9:45 – 10:15 Lessons learned from Planning, Designing, Constructing and Commissioning Biogas-Fueled Cogeneration Systems – David L. Parry, Jacobs "Insights from different phases of the projects are given with regards to selection of cogeneration units, biogas treatment process, hydronic system design, and electrical interconnection."

10:15 – 10:30 break

10:30 – 11:00 Conversion of WWTP Digester Gas into Compressed Natural Gas Vehicle Fuel Jessica Bernardini, Cornerstone Environmental Group, A Tetra Tech Company Digester biogas upgrade to renewable natural gas, case studies

11:00 – 12:00 Cost of Operating and Maintaining a Cogeneration SystemPatrick Orr, Clean Water Services "A fully functioning cogeneration facility consists of many systems. Operating and maintaining each of the systems will have a cost associated with it. These costs will typically include labor, material or parts, and consumables. Developing a plan for operating and maintaining each system will allow for budgeting and labor requirements associated with a successful cogeneration facility."

12:00 – 1:00 lunch break

1:00 – 2:00 Valuing Carbon -Incentives for Beneficial Use of Digester Gas and Other Sustainable Projects - Steve Krugel, Brown and Caldwell "The presentation will discuss ways communities are adding value to carbon and other sustainable benefits into their traditional cost evaluations and how this may incentivize project development. Topics covered : carbon valuation approaches, including those based on cap and trade markets, the social cost of carbon and adopted values based strictly on community environmental ethic, and addition available direct monetary incentives for some uses such as Renewable Identification Number (RIN) credits."

2:00 – 3:00 A Presentation on the Cogen Project at Central Kitsap WWTP Peter Zemke, Brown and Caldwell "Central Kitsap WWTP provides an example of how cogeneration can be feasible for smaller municipalities. This presentation describes the performance and features of the plant’s 250-kW cogeneration system."

3:00 – 3:15 Break

3:15 - 4:15 Cogeneration feasibility study for Bend, Oregon - Jeremy Keller, Ameresco "A presentation on reducing the biogas monetization options to consider for your digester with an early focus on return on investment and risk transfer.”

4:15 - 4:30 Q&A and Wrap up

Brief Biography and/or Qualifications
Ms. Jessica Bernardini
Jessica is a Senior Project Manager with 12 years of experience in a range of solid waste and biogas utilization projects. Her most recent projects focus on the utilization of digester and landfill gas for renewable energy and natural gas in California and the Pacific Northwest. Jessica has provided engineering and permitting assistance to biogas utilization projects, prepared feasibility studies for initial analysis of project alternatives, and prepared and managed Federal and State grants and funding opportunities. Ms. Bernardini is a certified professional engineer in Oregon, Washington, California, and Alaska.


Anthony Tartaglione, P.E., BCEE
Anthony has contributed in the planning, execution, and successful completion of numerous projects through the creation of clear and attainable project objectives, developing project requirements, and managing the triple constraint - cost, schedule and quality over his 18-year career. As a process engineer, his experience includes alternative energy, thermal oxidation and thermal desorption systems, anaerobic digestion, sludge dewatering and thickening processes, pumping station design, applying mass and energy balance principles to optimize plant operations and assess future capacity needs, and executed hydraulic capacity and modeling studies.

From both engineering and management perspectives, Anthony has leveraged experience working with industry technology leaders to develop technical expertise and competency in project pre-planning, design, and constructability. He has learned the importance of effective communication in all forms and has embraced this tenet in everything he does. These qualities and experiences are reflected in his leadership skills, relationship building, and commitment to excellence and enthusiasm to create opportunities from challenges including nutrient removal and recognition of “wastewater” as “resource-water”.

Patrick Orr
Patrick is a Senior Engineer at Clean Water Services in Hillsboro OR where is has been since 2013. From 2009 to 2013 he was at Environmental Engineering Services. He received his Bachelor of Science (BS) in Mechanical Engineering from SUNY Buffalo.

Dave Parry
Dr. Parry is Senior Fellow Technologist at Jacobs Engineering. He has over 35 years of experience in the planning, design, and construction management of wastewater treatment, solids processing, and energy projects. He is actively involved on several wastewater, biosolids, and energy projects throughout the world. He earned his Ph.D. in mechanical engineering from the University of Illinois at Urbana-Champaign. He earned his Bachelor and Master’s degrees in mechanical engineering from Brigham Young University. He is a registered mechanical and civil engineer in several states and provinces in North America. Dave is a Board Certified Environmental Engineer (BCEE) with the American Academy of Environmental Engineers.

Peter Zemke
Peter received his Ph.D. from Utah State University in 2010, and is a Mechanical engineer at Brown and Caldwell, specializing in biogas conditioning and end uses, plant heating systems, blowers and aeration systems, microalgal cultivation, and energy systems.

Jeremy Keller
Jeremy Keller received his B.S. in Mechanical Engineering from the University of Washington in 2005 and his M.B.A form Oregon State University in 2007. He is a Project Developer for Ameresco where his responsibilities include (1) Initial field audits and identification of potential conservation measures, including supporting sales staff in initial client meetings; (2) Investment grade energy and resource conservation audits including project life financial forecasts. Includes logging equipment performance, analyzing trends, energy models, calculating baseline energy use and proposed retrofit scope/energy use; (3) Define IPMVP scope for post project measurement and verification of energy savings; (4) Manage small teams to package audits into construction projects including sub-contractors, and the customers staff.

He works with project managers to construct projects developed during the audit and holds the ultimate responsibility for the financial performance of multiple simultaneous multi-million dollar projects which pay for themselves with energy savings. The typical project includes lighting and water retrofits, HVAC upgrades/replacements, building controls modifications/replacements, envelope improvements and demand management. Typical customers: colleges, office buildings, warehouses, fire stations, K-12 schools, waste water treatment plants, and industrial sites. He is also responsible for building and implementing the NW region local tracking of projects, financial forecasting for integration with corporate systems and facilitated work load balancing between staff.
 
10:00am - 12:00pmPNCWA Board Meeting with Committee Chairs
Session Chair: David Keil, WR2 Development;
Boise Centre West 140 
10:00am - 4:30pmPrecon Workshop 2: Find the Leader Within You
Session Chair: Amy Dammarell, HDR;
Boise Centre West 120B 
 
ID: 301 / Precon Workshop 2: 1
Sunday Oct. 21 Preconference Workshops Program
Keywords: Leadership, service, managers

Find the Leader within You

Amy Dammarell1, Mark Poling2, Marcos Lopez3, Michael Comeskey4, Doug Berschauer5, Andy O’Neill6

1HDR Engineering; 2Clean Water Services; 3Tetra Tech; 4City of Boise; 5Parametrix; 6WA Dept of Ecology; , , , ,

Discover your Leadership Potential! Whether you’re an aspiring leader or one who’s been there, join us for an exploration of leaders at their best.

This workshop is based on the 5 leadership principles outlined in the book The Leadership Challenge” by Kouzes and Posner. The workshop includes breakouts and table discussions to encourage shared learning.

Participation in this workshop will help operators, supervisors, and managers perform their duties better by helping them work together better.

With a firm understanding of the five practices of exemplary leadership participants will be better employees, supervisors, and managers, understanding what it takes to help lead truly outstanding performance.

Sponsored by the PNCWA Leadership Development Committee Amy Dammarell, Commmittee Chair (HDR Engineering) Overall Facilitator and Moderator

Agenda:

10:00 – 10:10 Welcome and Introductions

10:10 - 10:25 Outcomes and Expectations

10:20 – 10:40 The Leadership Challenge Introduction

The Five Practices

10:40 – 11:20 Model the Way

11:20 – 12:00 Inspire a Shared Vision

Lunch 12:00 – 1:00

1:00 – 1:40 Challenge the Process

1:40 – 2:20 Enable Others to Act

2:20 – 3:00 Encourage the Heart

3:00 – 3:15 Break

3:15 – 4:00 Leadership Values

4:00 – 4:30 Leaders Share Their Journey

The Five Practices of Exemplary Leadership

  • Model the Way
  • Inspire a Shared Vision
  • Challenge the Process
  • Enable Others to Act
  • Encourage the Heart
  • Clarify values by finding your voice and affirming
    shared values
  • Set the example by aligning actions with shared values

Model the Way

“Leaders stand up for their beliefs…They show by their actions that they live by the values they profess.”

Inspire a Shared Vision

  • Inspire a Shared Vision
  • Envision the future by imagining exciting and ennobling possibilities
  • Enlist others in a common vision by appealing to shared aspirations

“The most important role of vision in organizational life is to give focus to human energy”

Challenge the Process

  • Challenge the Process
  • Search for opportunities by seizing the initiative and by looking outward for innovative ways to improve
  • Experiment and take risks by constantly generating small wins and learning from experience

“Change is the work of leaders…And all change requires that leaders actively seek ways to make things better – to grow, innovate, and improve.”

Enable Others to Act

  • Foster collaboration by building trust and facilitating relationships
  • Strengthen others by increasing self-determination and developing competence

“Leaders bring people together, creating an atmosphere where people understand that they have a shared fate…Leaders make sure that everyone wins.”

Encourage the Heart

  • Recognize contributions by showing appreciation for individual excellence
  • Celebrate the values and victories by creating a spirit
    of community

“Leaders express pride in the accomplishments of their teams…They make people feel like heroes.”

Brief Biography and/or Qualifications
Amy Dammarell:
Amy is an engineer, scientist, NEPA professional and project manager with 20 years of experience. Amy serves in a broad range from technical team member to project manager. In addition to her technical roles Amy serves as a facilitator for HDRs leadership development course. She also developed a technical skills transference program to translate senior level on-the-job experiences to other staff.

Mark Poling:
Mark is the Business Operations Director for Clean Water Services and has more than 30 years of experience working for utilities; serving in a management role for more than 20. Mark is a Past President of the Pacific Northwest Clean Water Association and currently serves on the Water Environment Federation Board of Trustees. A certified Group 4 operator he also holds a M.S. in Environmental Engineering from the University of Washington

Marcos Lopez:
Mr. Lopez, a registered engineer with 34 years of experience, provides project management and engineering experience within the public and private sectors. His technical experience includes inflow/infiltration (I/I) control program management, civil site planning; road and street design; grading, water, sewer, and storm drain design; hydrology studies and hydraulic design; cost estimating; and project feasibility studies. Mr. Lopez also has extensive disaster response related experience in direct support of FEMA and in support of Local Agency applicants requesting FEMA disaster relief funding.

Michael Comeskey:
Michael Comeskey is the Utilities Asset Manager for the City of Boise Public Works Department where he is leading the development of the City’s infrastructure management practices. In his career in the water industry Michael has helped municipalities, county governments, and private corporations develop innovative solutions to large-scale problems. Michael’s work enables organizations to bridge their strategic visions to their business and operational needs. Michael holds a B.S. in Biology from Washington State University and an M.B.A. from Boise State University.

Doug Berschauer:
Doug has 35 years of experience in wastewater facility planning and design and currently serves at the Water Technology Leader for Parametrix. He has performed comprehensive planning studies, design, construction services, and start-up for both water and wastewater systems/facilities. His expertise includes evaluating innovative technologies and helping clients select the preferred alternative through a collaborative hands-on approach. He has also conducted internal mentoring programs for the companies he has worked for the past 23 years and currently has a side business, Mesa Mobile Mentoring, which focuses on public speaking and team building.

Andy O’Neill:
Andy O’Neill provides technical assistance to small municipal wastewater facilities throughout central and eastern Washington. Andy’s background includes serving in various roles such as a wastewater treatment plant operator, facilities manager, board member for the State of Washington’s Wastewater Certification Advisory Committee, past president of the Water Environment Federations (WEF) member association Pacific Northwest Clean Water Association (PNCWA), and a current member of the Association of Boards of Certification (ABC) Wastewater Scheme Committee.
 
10:00am - 5:00pmPrecon Workshop 3: Aerobic Granular Sludge (AGS) - An Innovation for Increased Performance and Capacity in Existing Footprint
Session Chair: Li Lei, Jacobs;
Boise Centre West 110A 
 
ID: 302 / Precon Workshop 3: 1
Sunday Oct. 21 Preconference Workshops Program
Keywords: Aerobic, Sludge, Anammox

Aerobic Granular Sludge (AGS) - An Innovation for Increased Performance and Capacity within Existing Footprint

Li Lei1, Susanna Leung2, H David Stensel3, Bryce Figdore4, Sudhir Murthy5, Mari Winkler3, Manuel de los Santos6, Bruce Johnson1

1CH2M (now Jacobs); 2Carollo; 3University of Washington; 4HDR; 5NEWhub; 6Aqua-Aerobic Systems, Inc.; , , sudhir@murthy.technology, , ,

By developing granular sludge that settle significantly better than conventional flocculent activated sludge, the innovative aerobic granular sludge process has gained tremendous interests in its capability of holding 2-3 times the biomass inventory of an activated sludge process within the same space, increasing capacity, enhancing nutrient removal, while offering energy savings.

The workshop will provide the attendees with the state of the art of the aerobic granular sludge process, and feature leading practitioners from forward-thinking municipalities/utilities, academia, consulting fields, and innovative technology providers.

The objectives of the workshop are to provide the attendees with the state of the art of the aerobic granular sludge process, including its fundamentals, worldwide applications, case studies, challenges of and design approaches to full-scale implementations, highlights of researches, and initiatives in pacific Northwest.

The workshop will also provide an opportunity through panel discussions to exchange ideas with respect to the development, assessment and implementation of aerobic granular sludge technology in existing infrastructure.

Schedule

10:00 - 10:05 am: Welcome & Introductions, Dr. L. Lei, Facilitator, Jacobs

10:05 - 11:05 am: State of Art of Aerobic Granular Sludge Process and Initiatives in Pacific Northwest, Dr. H. Dave Stensel, Univ. of Washington; Dr. B. Figdore, HDR

11:00 - 12:00 pm: Approaching Aerobic Granular Sludge in Continuous Flow Processes using inDENSE® Technology. Dr. S. Murthy. NEWhub.

12:00 - 1:00 pm: Lunch Break

1:00 - 1:20: Collecting Attendee's Questions on Aerobic Granular Sludge Processes, Dr. L. Lei, Facilitator, Jacobs

1:20 - 2:15 pm: Molecular Biology Findings and Implications for Aerobic Granular Sludge Processes, Dr. M. Winkler, Univ. of Washington

2:15 - 3:00 pm: Aqua-Aerobic Systems, Inc. AquaNereda® Aerobic Granular Sludge: Worldwide Operational Experience in Full Scale Plants and the First plant in USA, Mr. M. de los Santos, Aqua-Aerobic Systems, Inc.

3:00 - 3:15 pm: Refreshment Break

3:15 - 4:15 pm: Design and Case Studies of Aerobic Granular Sludge Plants, Mr. B. Johnson, P.E., BCEE, IWA Fellow, Jacobs

4:15 - 5:00 pm: Panel Discussions, All Speakers

Speakers and presentations featured:

Dr. H David Stensel. Univ. of Washington. State of Art of Aerobic Granular Sludge Process and Initiatives in Pacific Northwest. The objectives of this presentation are to provide the attendees with a background on the fundamentals of granular activated sludge and the current progress on a pilot plant study by the University of Washington and King County to evaluate the use of sidestream granular sludge bioaugmentation to enable mainstream nitrogen removal in a short-solids retention time (SRT) flocculent activated sludge process.

The outline of the presentation is as follows:

  • Characteristics of Granular versus flocculent activated sludge
  • Advantages for granular versus flocculent activated sludge and combined granular/flocculent activated sludge
  • Selective pressures for granular sludge growth
  • Types of granular sludge applications
  • Sidestream growth of granular sludge for bioaugmentation of ammonia removal
  • UW/King County granular sludge bioaugmentation pilot plant project

i. Seed source and “baby granules”

ii. Start up operation and performance of sidestream granular sludge system treating anaerobic digestion centrate

iii. Performance of mainstream treatment system after granular sludge addition

Dr. Sudhir Murthy. NEWhub. Approaching Aerobic Granular Sludge in Continuous Flow Processes using the inDENSE® Technology. The use of hydrocyclones in combination with an anaerobic zone metabolic selector for densification and bioP is an innovative approach for low capital cost investment for wastewater treatment plants to improve both phosphorus removal performance and increase process capacity simultaneously. Hydrocyclones retain phosphorus-accumulating organisms in the underflow leading to stabilization in treatment systems with seasonal variation by maintaining the biomass population. In some process configurations, it can lead to granulation.

This presentation highlights the implementations of hydrocyclones and performance enhancement at Hampton Roads Sanitation District’s (HRSD) James River Wastewater Treatment Plant (JRTP) and Urbanna Wastewater Treatment Plant (UBTP), VA and the Soyen plant near Munich, Germany. The three plants have very different configurations.

The JRTP is rated at 20 MGD, utilizes a 4-stage Bardenpho configuration with an IFAS system, and had historically poor settleability prior to the hydrocyclone installation, with SVI values of 140± 34 mL/g, not associated with filaments, nutrient deficiencies, or poor monovalent to divalent cation ratios. The influent wastewater characteristics, such as soluble chemical oxygen demand (sCOD) of 250 to 350 mg L-1, are favorable and allow for seasonal biological phosphorus removal without a formal anaerobic selector.

UBTP is rated at 0.10 MGD with two 0.050 MGD parallel trains operated in a Modified Ludzack-Ettinger (MLE) configuration. Previously the UBTP was an extended aeration system with poor settling sludge due to denitrification in the secondary clarifiers. Hydrocyclones were implemented at both plants as external selectors for selectively wasting poor settling flocs while retaining dense particles for improved settleability, in addition to elucidate the extent of metabolic selection with and without a formal anaerobic selector to enhance biological phosphorus removal performance.

Finally, the BIOCOS process (a modified SBR) at the Soyen plant will also be discussed, which was converted to perform Bio-P by using an external anerobic selector as well as an external hydrocyclone.

Dr. Mari Winkler. Univ. of Washington. Microbiology and Optimization of Granule Aerobic Sludge Process for Enhancing Mainstream Nitrogen Removal Capacities at Low Costs. This talk involves providing an opportunity to exchange ideas with respect to the development, assessment and implementation of aerobic granular sludge technology in existing infrastructure. A critical limitation of the aerobic granular sludge technology is that it cannot be readily adapted to most existing activated sludge process reactor geometries, which clearly limits its broader application. Therefore, it is a challenge to find new ways how to retrofit existing plants for aerobic granular sludge technology.

This talk will focus on the microbiological aspects of granule and floc competition and on the population dynamics in these systems.

In addition, this talk will focus on the enhancement of mainstream nitrogen removal capacities at minimal costs by determining optimal conditions for promoting growth of ammonium oxidizing archaea (AOA) with Anaerobic ammonium oxidizing bacteria (Anammox) within single granules using

  • Controlled laboratory reactor systems
  • EPS-mimetic hydrogels embedded with AOA-Anammox microbes
  • High-resolution real-time sensing modes coupled with machine learning data processing for enhanced bioreactor control mechanisms.

The aim of this talk is to establish actionable roadmaps for the further development, demonstration, and implementation of granular sludge in existing treatment facilities.

Mr. Manuel de los Santos. Aqua-Aerobic Systems, Inc. AquaNereda® Aerobic Granular Sludge: Worldwide Operational Experience in Full Scale Plants and the First plant in USA. A research partnership in the Netherlands led to the development of a first technology applying aerobic granular sludge in a full-scale wastewater treatment plant. Currently, over 30 full-scale AGS plants are operational or under design/construction worldwide.

This SBR type AGS system creates proper conditions to reliably maintain a stable granule within a single tank, without the need of a carrier, secondary clarifiers, selectors, separate compartments, or return sludge pumping stations.

The layered microbial community within the granule structure enable simultaneous processes to take place in the granular biomass, including enhanced biological phosphorus reduction, and simultaneous nitrification/denitrification, and makes the system more resistant to toxic shocks and fluctuations in chemicals, load, pH, and salinity than conventional systems. The enhanced settling properties (SVI at 30-50 mL/g) allow the system to be designed for 8 g/L of MLSS, reducing footprint by up to 75% and provideing up to 50% energy savings when compared to activated sludge systems.

The AGS technology is now entering U.S. as a promising alternative for capacity increase, retrofit, treatment upgrades with limited footprint, and enhance biological nutrient removal. To validate the technology in the US, a full-scale demonstration facility is in development and an AGS pilot unit has been constructed. Additionally, a full-scale AGS application is currently in the design stages for a municipality in Alabama.

This presentation will cover details on the granular sludge technology, the advantages that it offers, its worldwide operational experience and the efforts to introduce the technology to the US market.

Mr. Bruce Johnson, P.E., BCEE, IWA Fellow, Jacobs. Design and Case Studies of Aerobic Granular Sludge Plants. The design of Aerobic Granular Sludge (AGS) facilities falls into two major categories:

  • continuous feed systems where granules are encouraged to form within a conventional activated sludge system; and,
  • in sequencing batch reactors or SBRs (e.g. Nereda™).

Both of these systems rely upon, and encourage, the development of aerobic granular biomass collections. These granules have the characteristics of multiple biomass populations within them (i.e. heterotrophs and autotrophs), and are more easily retained in biological treatment systems as a result of their larger settling rates/size.

Case studies of both types of the systems at Ejby Mølle WWTP (Odense, Denmark) and Central Regional Wastewater System WWTP CRWS, Trinity River Authority, Texas, will be highlighted.

While continuous feed AGS systems can be freely designed and installed by utilities, SBR AGS systems are currently patented by DHV and sold in North America exclusively by Aqua Aerobics.

This presents challenges to the North American market for two reasons:

  • sole source procurement of large process systems can be challenging in some utilities
  • there are currently no publicly available tools (i.e. wastewater simulators) that can capture and confirm the design parameters provided by the vendor

It is important for the responsible process engineer to have independent confirmation of performance for professional liability concerns. This presentation will discuss design experience with the Morecombe WwTW in the United Kingdom, and how it approached working with DHV and confirming their process design for this facility.

Brief Biography and/or Qualifications
Dr. Li Lei has been working in the environmental engineering and research field for over 20 years. She received her Ph. D. degree in Environmental Engineering from the University of Cincinnati and has been with CH2M now Jacob for the past 11 years. She is a process engineer supporting projects in the Northwest region, with a focus in wastewater treatment process study, modeling, design, and optimization. She has been active in PNCWA and currently leads the Emerging Technologies Committee.

Dr. H. David Stensel has forty-five years of experience in the environmental engineering industry and academia. Prior to his academic positions at University of Utah (1980-1985) and University of Washington (1985-2016), he spent 10 years in practice developing and applying industrial and municipal wastewater treatment processes. He has led the application and design of many biological processes in his career including treatment for water reuse, resource recovery, and nutrient removal. He has authored or coauthored over 160 technical publications. He is coauthor of the 4th (2003) and 5th (2014) editions of the Metcalf and Eddy Wastewater Engineering book, which is widely used by practitioners and in academic environmental engineering courses. He has presented in numerous workshops and seminars for the EPA, WEF, and Water Environment and Reuse Foundation (WERF). He has also been serving on the WERF Nutrient Challenge Program management team for the last 6 years. He has worked with King County Wastewater Treatment Division for the past 25 years and has managed several pilot plants and testing studies at their facilities.

Dr. Bryce Figdore is a wastewater process engineer with HDR based in Bellevue, WA. He has a Bachelor’s degree from The Pennsylvania State University, a Master’s degree from Villanova University, and a PhD from the University of Washington where his work focused on granular activated sludge. Bryce is enthusiastic about applying his expertise in biological nutrient removal to deliver innovative and robust solutions to protect water quality and astutely manage water resources. Occasionally he can be found exploring the great Pacific Northwest, most likely while fly fishing or hiking with his family.

Dr. Sudhir Murthy is CEO of NEWhub, a cleantech startup involved in developing and implementing new and innovative technologies. Until recently, Dr. Murthy was Innovations Chief at DC Water, and for the past 16 years led the development and adoption of new technologies and process improvements that resulted in over $1 billion new capital investment at the Blue Plains AWTP. He has over 125 peer review publications and has been involved in over 15 patent or applications. Dr. Murthy has received numerous awards from WEF, WRF and AAEES for applied research and for operational improvements. He is a Professional Engineer and licensed wastewater treatment plant operator in Virginia. He received his MS and PhD in Civil/Environmental engineering from Virginia Tech.

Dr. Mari Winkler has joined the Civil & Environmental Engineering Department faculty at the University of Washington in 2015. She received her Ph.D. degree in Environmental Engineering from Delft University of Technology, Netherlands. Her research interests include microbial ecology of mixed culture communities, mathematical modeling of microbial interactions, and innovative wastewater and sludge treatment processes including Anammox, aerobic granular sludge, resource recovery, and biosolids technology. In addition, she has had industrial experience in the field of process engineering and sales management, and is the newsletter editor of the IWA group for sludge management. Dr Winkler received several prizes for her work, including AEESP outstanding PhD dissertation award, Huber Technology prize, ISME-IWA Biocluster award, and Paul Busch award).

Mr. Manuel de los Santos is the product manager of biological processes with Aqua-Aerobic Systems, Inc. He received his M.S. degree in Sanitary and Environmental Engineering from the Universidad de Cantabria, Spain, after attaining his B.S. degree in Civil Engineering in Dominican Republic. Mr. Santos has worked in the wastewater treatment industry since 2000. His experience includes design, application and technical support for biological processes and membranes, as well as consulting in the construction field.

Mr. Bruce Johnson, P.E., BCEE, IWA Fellow, has been working in the wastewater industry for nearly 30 years, and has been with CH2M (now Jacobs) for the last 25 years. With CH2M, Bruce has led the wastewater treatment technology organization and is currently responsible for the wastewater modeling program. He is one of CH2M’s leading wastewater process engineers, and supports projects around the world. He has been active outside of CH2M both in WEF and IWA. Within WEF, he led the development of the new Nutrient Removal MOP, vice chaired the committee that developed the Wastewater Simulation MOP, and was a contributing author in MOP 8’s suspended growth chapter. He also chaired the WEFTEC wastewater symposia committee, and was a founding member and past chair of WEF’s Modeling Experts Group of the Americas.
 
1:00pm - 5:00pmPNCWA Section Leaders Training
Boise Centre West 100E 
1:00pm - 5:00pmPrecon Workshop 4: Demystifying Water Quality Based Permitting, (Or How to Have Fun During Your Next Permit Renewal)
Session Chair: Stephen James, JUB Engineers;
Boise Centre West 110B 
 
ID: 279 / Precon Workshop 4: 1
Sunday Oct. 21 Preconference Workshops Program
Keywords: permitting, WQBEL

Demystifying Water Quality Based Permitting, (Or How to Have Fun During Your Next Permit Renewal)

Stephen James1, Caitlin Hubbard2, Ellie Key3, Jon Gasik4, Karen Burgess5, Mary Anne Nelson6, Tom Dupuis7

1JUB Engineers, United States of America; 2Lake Stevens Sewer District; 3Washington Department of Ecology; 4Oregon Department of Environmental Quality; 5US Environmental Protection Agency; 6Idaho Department of Environmental Quality; 7HDR, inc.; , , , , , ,

Most treatment plants do a good job of meeting the secondary treatment standards (AKA technology-based limits). But what about nutrients and toxics?

The regulatory agencies use a well-documented process to determine what new permit limits needed and what those new limits are. Do you know how they do this so you can be prepared when it is time to renegotiate your permits?

This is an interactive workshop with senior permitting staff from Idaho, Oregon, Washington, EPA, and consulting engineering that will provide a solid base for understanding permits and the information you need to be prepared.

Key learning objectives are:

  1. Basics of the Clean Water Act
  2. Effluent limit development (Technology based and water quality based limits) including how limits are calculated
  3. What causes new limits to be added to permits including TMDLs and Reasonable Potential Analyses
  4. How Water Quality Based Effluent Limits are calculated
  5. Understanding monitoring data and uncertainty
  6. Challenges with Water Quality Standards (Aquatic life vs. Human Health Criteria) including: the differences and similarities between ID, OR, and WA; understanding which parameters affect permit limits (Temperature, pH, and alkalinity dependent pollutants); the biotic ligand model (copper and aluminum); and how regulatory agencies are permitting mercury
  7. Implementation tools for meeting WQS (compliance schedules, variances, intake credits, adaptive management, etc.)
  8. An overview of what is negotiable and what should be commented on in draft permits Attendees are encouraged to bring permit renewal documents for their facilities.

The workshop will include a panel discussion of upcoming significant permitting issues in each State followed by a question and answer session.

1:00 - 1:10 Introduction – Stephen James (JUB) /Caitlin Hubbard (Lake Stevens Sewer District)

  • Welcome to audience with overview of what will be discussed
    • New Permittee experience

1:10 - 1:30 POTW permitting intro (lightning round) – Karen Burgess (US EPA)

  • Segue from Caitlin’s experience to how it is actually meant to be done
  • CWA overview
  • Human health vs. aquatic life
  • What causes a constituent to be in your permit
  • Overview of chronic and acute mixing zones
  • How reasonable potential analyses (RPA) are conducted
  • Mixing zones and potential variations

1:30 - 2:00 Overview of how WQBELs are developed – Tom Dupuis (HDR Engineering)

  • Overview of pollutants of concern
  • EPA Technical Support Document for WQBELs
  • How reasonable potential analyses (RPA) are conducted
  • Mixing zones and potential variations
  • Steady versus dynamic modelling

2:00 - 2:30 Example problem – Ellie Key (WA ECY)

Simple steady state dilution model– hand calculation with a partner (includes documents showing calculations, etc.) evaluating a toxic constituent and reasonable potential analysis. This will provide a hands on overview of how permit limits are developed.

2:30 - 3:00 Coordination/Partnering with regulators –Jon Gasic (Oregon DEQ)

This session summarizes the process of what is helpful to work with regulators and permittees including:

  • How do develop a great permit application
  • What information (and how much) is needed during the permit writing phase
  • Implementation tools that regulators and permittees can use including compliance schedules, variances, etc.

3:00 - 3:15 Break

3:15 - 3:40 What would YOU do? – Round Table Discussion, Mary Anne Nelson (IDEQ) moderating: This hands on exercise presents an example (priority) pollutant and walks the group through permit development. This will be an interactive group activity and will include key elements that need to be considered with each permitted constituent

3:40 - 3:55 Upcoming significant issue topic 1 - Panel, all DEQ, ECY and EPA speakers

This includes each regulator talking about where people are having trouble meeting permits, what changes they see coming, what they are concerned about. This session will focus on both single constituents and new multiconstituent methods such as the biotic ligand model.

3:55 - 4:15 Stump Your Regulator – “What If” Scenarios or “What would you do” Scenario - Panel, all DEQ, ECY and EPA speakers

Participants will be asked about items they would like to know more about at the beginning of the presentation. Panelists will address each of the issues raised.

4:15 - 4:35 Upcoming Significant Issue topic 2 - Panel, all DEQ, ECY and EPA speakers

An opportunity to have people ask about tough issues to see what other states are doing about them (blending, temperature, PCB, others)

4:35 - 4:55 “What would you do” group discussion including previous Panel

4:55 - 5:00 Thank you and Closing

Brief Biography and/or Qualifications
Stephen James, PE - Sr Project Engineer for J-U-B Engineers has worked on permitting for over 25 years and has successfully negotiated one of the few variances granted in idaho as well as a number of compliance schedules.

Caitlin Hubbard - Caitlin is currently the Lead Operator of Lake Stevens Sewer District WWTP and brings extensive experience with process control and how that relates to permitting.

Ellie Key, PE - Eleanor is the Senior Engineer in Ecology’s Water Quality Program in Olympia, WA. In this position, Eleanor serves as a technical permitting and policy lead where she provides guidance to permitting staff from all of Ecology’s regions and also to the larger regulated community. Prior to joining Ecology’s headquarters in fall of 2016, Eleanor served as a water quality staff engineer in the Ecology’s Eastern Regional Office where she was responsible for over 20 municipal treatment plants. Eleanor hold a BS in Environmental Engineering from the Colorado School of Mines and a MS in Environmental Engineering from Washington State University.

Jon Gasik, PE - Jon is a Senior Environmental Engineer in the Water Quality Division of the Oregon DEQ specializing in water quality and permitting. He brings over 20 years of experience in permitting as well as hazardous waste and environmental impairment liability for public and private agencies. Jon has an MS in Civil Engineering from the University of Southern California and a BS in biochemistry from the University of California at Los Angeles.


Mary Anne Nelson - Mary Anne Nelson is the IPDES Program manager for the Idaho Department of Environmental Quality, providing assistance, guidance, and regulatory control for surface water discharge activities in Idaho. After nearly 15 years working at DEQ, Mary Anne is experienced in tackling complex environmental issues that require understanding and communication among diverse groups with varying interests. She has spent the last 4 years leading Idaho’s efforts to gain delegated authority for the Idaho Pollutant Discharge Elimination System Program, which was approved in June 2018 and has begun transferring permit authority from EPA. Mary Anne is native of Salmon, Idaho, and holds a Ph.D. in chemistry from the University of Nebraska–Lincoln. She is also a certified public manager.

Karen Burgess, PE - Karen Burgess works for the U.S. Environmental Protection Agency, Region 10 office in Seattle in the position of NPDES Permits Unit – State Oversight Lead. Karen works closely with Region 10 states (Alaska, Idaho, Oregon and Washington) to oversee the implementation of NPDES program that has been delegated to states. She is a licensed professional engineer in the State of Washington with a Bachelor’s degree in Chemical Engineering and a Master’s degree in Business Administration. She worked in industry as a Process Engineer and for Washington State’s Department of Ecology prior to joining EPA.

Tom Dupuis, PE - Tom has more than 40 years of professional experience, with a primary focus on the Clean Water Act. He worked initially for a research and consulting firm in Wisconsin, then for the State of North Carolina, and next with international consulting firms while based in Wisconsin and Idaho. He has worked on Clean Water Act projects in nearly every state and territory in the U.S., and has bachelors and masters degrees in environmental engineering from Marquette University.
 
4:00pm - 5:00pmMeet & Greet: First Time Attendees/New Members
Session Chair: Shannon Ostendorff, Lonza;
Session Chair: Brittany Burch, Isle Utilities;
Boise Centre West 100C 
5:00pm - 7:00pmAll Attendee Meet & Greet & Operations Challenge
Session Chair: David Keil, WR2 Development;

All registrants welcome!

Boise Centre West 100C 
7:00pm - 9:00pmPresident's Dinner
Session Chair: David Keil, WR2 Development;

By Invitation only

Boise Centre East 420A 
8:00pm - 10:00pmStudents and YP Meet & Greet (35 and under only please)
Session Chair: Kristi Steiner, Clean Water Services;

(35 and under only please) Really!

Offsite 
Date: Monday, 22/Oct/2018
7:00amRegistration Desk is Open

7:00 AM - 5: 30 PM

 
7:00amSpeaker Ready Room is Open

8:00 AM - 5: 00 PM

Boise Centre West 110C North 
7:00am - 8:30amBreakfast—Monday Breakfast

Complete Packages only

Boise Centre East 400 
8:30am - 10:00am00B Opening: Opening Session

8:30 – Welcome and Introductions by David Keil, PNCWA President

Keynote: An Old Industry in a New Era: Business Opportunities for the Next 50 Year

 8:35 –  Keith Hirokawa, Professor of Law, Albany Law School

            Watershed Governance as an Ecosystem Services Opportunity

 9:00 – Holli Woodings, City Councilmember, City of Boise

           Cities Lead: Innovation and the future of water

 9:20 – Jackie Jarrell, Operations Chief, Charlotte Water (North Carolina) and President, Water Environment Federation

             WEF’s Looking to the Future

 9:28 – Amit Pramanik, Chief Innovation and Development Officer, Water Research Foundation

             The “New” Water Research Foundation and Clean Water Technologies for the Next 50 Years

9:35 – Questions & Answers

9:45 – Scholarship Announcements/Presentations (Andy McCaskill)

9:55 – Conference Announcements (Chris Horgan)

10:00 – Adjourn

Boise Centre East 400 
 
ID: 335 / 00B Opening: 1
Monday Oct. 22 Program
Topics: Innovation, Leadership, Planning
Keywords: Planning, Innovation, Workforce, Growth, Regulations

An Old Industry in a New Era: Business Opportunities for the Next 50 Year

David Keil1, Keith Hirokawa2, Holli Woodings3, Jackie Jarrell4, Amit Pramanik5

1WR2 Development; 2Albany Law School; 3Boise City Council; 4Water Environment Federation; 5The Water Research Foundation; , , ,

The focus for the opening session and many of the technical presentations in the following days will be on how our industry can be creative, reevaluate our foundational strengths, and evolve to meet future challenges like growth, regulations, and a changing workforce.

Brief Biography and/or Qualifications
Keith Hirokawa, Professor of Law, Albany Law School
He joined the faculty at Albany Law School in 2009 where he teaches courses involving environmental and natural resources law, land use planning, property law, and jurisprudence. Professor Hirokawa's scholarship has explored convergences in ecology, ethics, economics, and law, with particular attention given to local environmental law, ecosystem services policy, watershed management, and environmental impact analysis. He has authored dozens of professional and scholarly articles in these areas and has edited several books, including Greening Local Government (2012), Environmental Law and Contrasting Ideas of Nature: A Constructivist Approach (2014), and Rethinking Sustainable Development to Meet the Climate Change Challenge (2015). Prior to joining the faculty at Albany Law, Professor Hirokawa was an Associate Professor at Texas Wesleyan University School of Law and an Adjunct Professor at the University of Oregon, School of Law. Professor Hirokawa practiced land use and environmental law in Oregon and Washington and was heavily involved with community groups and nonprofit organizations.

Holli Woodings, City Council member, City of Boise
Holli Woodings began her term on the Boise City Council in January 2018. She serves as the City Council liaison to Public Works, the Air Quality Board, the Community Planning Association of Southwest Idaho (COMPASS), and co-chairs Energize our Neighborhoods. Holli served as a State Representative for District 19 in Idaho’s 72nd Legislature. Prior to that, she helped develop and finance Idaho’s largest wind energy farm, founded Woodings Group, a consultancy specializing in startup energy companies, and co-founded the Idaho Clean Energy Association. The Idaho Clean Energy Association is a nonprofit organization dedicated to the advancement of renewable energy, energy efficiency and their associated technologies in the State of Idaho. One of the goals of the association is to educate Idaho’s citizens on the opportunities to use energy resources efficiently and develop Idaho’s own clean energy resources.

Sustainable Boise is a citywide initiative centered on strategies that create lasting environments, innovative enterprises, and vibrant communities. This initiative demonstrates the City's commitment to lead through policies and projects that ensure the sustainability of the community, economy and environment. Around water resources, Boise City has established programs, goals, and initiatives to support water protection and water conservation efforts. Those efforts include:

Operating two wastewater treatment facilities that give renewed life to nearly 30 million gallons of used water daily
Operating the first Class A Struvite Production Facility that uses phosphorus harvested from the wastewater treatment process to be sold as fertilizer.
Participating in the Lower Boise Watershed Council, a planning group that provides advice on water quality improvement plans
Holli’s mix of business acumen and public service, both aligned to a strong interest in sustainability, make her an ideal speaker for the Opening Session as we look toward the next 50 years.

Jacqueline A. Jarrell, Operations Chief of Charlotte Water, Charlotte, North Carolina and WEF Vice President
Jackie Jarrell, P.E., is the 2017-2018 Vice President of the Water Environment Federation. Jackie will speak to the topic of An Old Industry in a New Era from both the WEF perspective and her own perspective based on many years serving in the industry.

Jackie has been with Charlotte Water for more than 25 years. For the past 15 years, she has been responsible for the overall management of the operation and maintenance of five wastewater treatment facilities consisting of a total capacity of 123 million gallons per day (MGD), with the largest plant permitted at 64 MGD. She is also responsible for the related Residuals Program, producing more than 90,000 wet tons/ year, and the Industrial Pretreatment Program, with more than 60 significant industrial users. Recently, Jackie serves as the Operations Chief responsible for wastewater operations, and includes oversight of regulatory functions, process control, industrial pretreatment and continuous improvement programs within the operations areas.

As a WEF member, Jackie has held multiple leadership and committee roles, including serving as the chair of the Utility Management Program Symposia and the first vice chair of the Utility Management Committee. She is an active member of the North Carolina Water Environment Association (NCWEA) and is also actively involved with the North Carolina Water Quality Association, a regulatory advocacy organization of utilities in North Carolina, and is a past chair and a current board member.

Jackie is a registered professional engineer in the state of North Carolina and holds a Biological Wastewater Grade II OIT. In 2015, Jackie, along with her colleagues, was awarded the Gascoigne Wastewater Treatment Plant Operational Improvement Medal.
 
10:00am - 2:00pmOperations Challenge

 

Junior Ballroom Boise Centre West 
10:30am - 11:00amOdor and Air Quality Committee Meeting
Boise Centre West 110C 
10:30am - 11:30amSustainability Committee Meeting
Boise Centre West 140 
10:30am - 12:00pmSession 01A part 1: Leadership
Session Chair: Robert Lee, Murraysmith;
Boise Centre East 420B 
 
10:30am - 11:15am
ID: 203 / Session 01A part 1: 1
Monday Oct. 22 Program
Topics: Leadership
Keywords: Workforce, Training, Human Resources, Leadership, Needs Assessment

A Water Workforce Needs Assessment: Human capital for tomorrow’s challenges

Carrie Sanneman1, Paul Manson2

1Willamette Partnership, United States of America; 2Portland State University, Center for Public Service, United States of America; ,

In the next 50 years, utilities will face unprecedented challenges. Across the Northwest, the sector needs to adapt to new regulatory requirements, a changing climate, and an aging workforce. For urban areas, those issues are compounded by the need to keep pace with population growth. In rural areas, the challenge is more often about accessing the funding or financing to make costly upgrades. Northwest utilities need a diverse and prepared workforce to meet those challenges. Willamette Partnership and Portland State University’s Center for Public Service, in collaboration with the Center for Sustainable Infrastructure, are partnering to learn how workforce development can best support Oregon and Washington utilities to design, build, and maintain the infrastructure of tomorrow. Throughout 2018, the project team has investigated the critical barriers that water infrastructure providers face in developing and retaining a reliably qualified and talented workforce. The team used surveys, interviews, and literature review to identify workforce-related barriers to high performance (e.g., availability of training programs, recruitment, retention, etc.) and propose solutions to improve the region’s water infrastructure talent pipeline, including tailored recommendations for large, small, rural, and urban settings. But the work doesn’t stop there. After the results are available, anticipated September 2018, the team will begin extensive outreach to share the findings and draft recommendations, building a solution set that utilities, technical training and apprenticeship programs, engineering and management programs of the region’s universities, and other workforce development partners agree can best develop our precious human capital.
Brief Biography and/or Qualifications
Carrie Sanneman is Willamette Partnership’s Clean Water Program Manager, lead on green infrastructure for water, and an expert in market- and incentive-based approaches to conservation. Her career has revolved around conservation and restoration- the laws and policies that drive resource management, the tools to evaluate and communicate the benefits nature provides, options for funding and financing that work, and the realities of moving dirt and planting plants.Carrie holds an interdisciplinary Master’s degree in Environmental Science and Management from UC Santa Barbara’s Bren School and Bachelors of Science in Biology and Environmental Studies from Iowa State University.

Paul Manson is faculty in Portland State University’s Center for Public Service (CPS). Paul specializes in complex infrastructure decisions and disaster resilience and recovery planning. He has built tools to support energy transmission siting and marine facilities. CPS has over four decades of experience building talent, providing technical assistance, and applying research to public service professionals in Oregon and beyond. CPS has provided emergency leadership and community resilience training for the Association of Oregon Counties.

11:15am - 12:00pm
ID: 290 / Session 01A part 1: 2
Monday Oct. 22 Program
Topics: Leadership
Keywords: Generational Handoff, Succession Planning, Diversity, Inclusion

Capitalizing on Generational Strengths: A Case Study of a Mid-Sized Engineering Firm

Thomas Walsh1, Shelby Asato2

1Murraysmith, Inc.; 2Murraysmith, Inc.; ,

Generational Handoff (GH)/Succession Planning (SP) are pivotal to an organization’s evolution and success, involving every individual from each generation and background. This presentation discusses the steps taken at a mid-size engineering firm, Murraysmith, to instruct and improve its approach to and inclusion of GH/SP. Murraysmith recognizes the importance of GH/SP through its core values. Murraysmith has incorporated GH/SP as part of its Corporate Social Responsibility (CSR) Program. The CSR program focuses on 28 initiatives within three pillars, including community, environment, and diversity/inclusion. GH/SP was recently tackled as part of a diversity/inclusion roundtable, which included employee polling and internally-guided discussions regarding stereotypes, communication, and value/appreciation. Roundtables were followed by dissemination of firm-wide resource, such as an active mentoring program. This presentation will: 1. Define the approaches taken at Murraysmith to enact discuss GH/SP 2. Classify the participant background 3. Explain how GH/SP was communicated and discussed 4. Summarize important takeaways from the GH/SP roundtables 5. Provide pertinent conclusions and recommendations for other companies 6. Outline the next steps being taken
Brief Biography and/or Qualifications
Shelby Asato is a University of Washington alum and registered Professional Engineer in Washington. Shelby works in the Murraysmith Seattle office focusing on wastewater and water design projects for municipalities in Washington. She is currently on the Murraysmith Diversity & Inclusion committee and co-developed the Diversity and Generational Handoff Case Study.

Thomas Walsh received his BS from Colorado State and a PhD from the University of Utah. He is a registered Professional Engineer (WA) and works on water, sanitary, and stormwater modeling and planning projects for municipalities across Oregon, Washington, and Idaho. He is currently on the Murraysmith Diversity & Inclusion committee and co-developed the Diversity and Generational Handoff Case Study.
 
10:30am - 12:00pmSession 02A part 1: Asset Management
Session Chair: Eric Habermeyer, Seattle Public Utilities;
Boise Centre East 410A 
 
10:30am - 11:15am
ID: 131 / Session 02A part 1: 1
Main Technical Program
Topics: Asset Management
Keywords: asset management, performance management, level of service, engagement

And Now for the Hard Part: Evaluating and Measuring the Performance of Your Asset Management Program

Elizabeth Lowell

HDR, United States of America;

The need for an asset management program is greater than ever: infrastructure is aging, regulations are requiring higher and higher performance standards, and financing infrastructure maintenance and investment requires greater and greater supporting documentation.

And the truth is, asset management programs ARE documented at many utilities, with many more working through unofficial or ad hoc methods. So, is that it? Are we done? The answer of course, is no, and that’s because of the inevitable next question: is what we’re doing working?

Whether a utility or agency has been practicing asset management for years, or is just implementing its program, it naturally wants to know if all its efforts are paying off and delivering the desired results. In addition, savvy stakeholders, customers, and external management are starting to pay attention to that too. But measuring that kind of success can be a challenge. What does successful asset management look like? How do we measure that? And how can we use that to evolve into the future?

This presentation will tackle that topic by presenting a variety of ways to measure the impact of an asset management program, such as leveraging service levels, performing self-assessments using a standard framework, and engaging staff. It will also include defining what “success” looks like from different vantage points, including senior management, governing bodies such as boards and elected officials, the general public, and the employees of a utility or agency itself.

Attendees can expect to pick up tips on leveraging available industry resources, explore potential metrics or performance indicators that can be applied programmatically, identify opportunities and ways to engage with their stakeholders, and most importantly, learn from each other!

Brief Biography and/or Qualifications
Elizabeth Lowell is a Management Analyst for HDR Engineering. She is a process expert in optimization and efficiency studies for water distribution, wastewater collection, and surface water systems, specializing in asset management, the development of performance plans, and goal-setting and strategic planning. For the past five years she has worked directly with utilities on programmatic assessments of asset management practices, O&M strategies, and employee development. Previously, she spent four years as a Project Development Manager in sustainable solid waste management business strategy, process, and market analyses.

11:15am - 12:00pm
ID: 262 / Session 02A part 1: 2
Main Technical Program
Topics: Asset Management
Keywords: Asset Management, Software, Digital, IoT, Technology

How to Make the Most Effective Use of Emerging Technologies to Meet Service Level Demands

Scott Bash

Jacobs, United States of America;

What if we redesigned the work using smart machines and the Internet of Things? Assets can self-monitor, collect data and communicate with other assets, and send event notifications to the owner. For years organizations have been talking about automating the business, but technology today is allowing us to digitalize the business processes and dramatically improve the ability to share knowledge. Instead of dehumanizing work, the technology helps people get back to what doing what they are good at. The opportunity is to use machines to augment people’s work and help them reach their potential without the constraints of paperwork and bureaucracy.

Utilities across the USA are learning how to use digital information along with business analytics and business intelligence (BI) tools to meet the growing demands of a “do more with less”, and in some cases a “do less with less”, society. Under these new data rich conditions, utility managers in Spokane, Portland, Seattle, Boise and across the Region are trying to figure out how to deal with all the available technologies and make the most effective use of available data.

Digital business transformation helps the organization improve process workflow by streamlining the data flow. Environmental regulations become stricter; society expects faster results, and the customers want it all to cost less. Technology can make internal business processes more effective and overall service delivery more cost efficient. The advent of the Internet of Things, mobile computing, machine learning and almost everything moving to the cloud makes us data rich but we need to turn that data into knowledge and share it enterprise wide. How an organization can determine the best course of action and leverage existing technology needs to align with business goals and available budget. This paper addresses the framework for information technology planning and knowledge management in a digital world.

Brief Biography and/or Qualifications
Scott is the Global Practice Leader for Management Systems at Jacobs Engineering in Bellevue, WA. He has more than 30 years of strategy, technology, and organizational management experience. He has demonstrated experience in asset management, business planning and using technology to improve organizational performance and achieve strategic business success. His approach to asset management and infrastructure replacement focuses on the way organizations use risk management to prioritize actions for meeting levels of service and making the most effective use of the communities money.
 
10:30am - 12:00pmSession 03A part 1: Public Outreach
Session Chair: Morgan Knighton, Gray & Osborne, Inc.;
Boise Centre West 120A 
 
10:30am - 11:15am
ID: 275 / Session 03A part 1: 1
Main Technical Program
Topics: Outreach/Communications
Keywords: Strategic, Communications, Outreach, Support

Strategic Communications Can Build Awareness, Mobilize Support, Engage Critical Decision Makers, And Help Utilities Maintain Positive Perception While Securing Funding For Infrastructure Renewal

Kim Pallari, Teresa Platin

HDR, United States of America;

Utility infrastructure is critical to functioning communities; yet the public have little understanding until issue arises or rates increase. To build a positive reputation while securing funds to renew or replace aging assets, utilities must take a programmatic approach to communication. The right plan can alter perception and position districts for successful, supported and smart growth. This presentation demonstrates how to employ strategic communications to strengthen public trust.

San Antonio Water System (SAWS) operates large, complex systems that provide vital services, however information was lost in translation between high quality services and a customer’s bill on the kitchen table. To close that gap, SAWS began engaging personally and dynamically with customers. Using data-driven technology emphasizing visual design, SAWS’ real-time capital project map website showed how SAWS’ investments benefit the community and environment. These efforts paved the way for SAWS’ investments in capital improvement projects to comply with mandated sanitary sewer overflow (SSO) reductions.

In 2005 the City of Sacramento began installing meters to 105,000 connections and updating aging pipes to comply with State Mandate. The City secured several funding sources to accelerate the Water Infrastructure Improvement Program while minimizing customer financial burdens. This example will explore controversy the City faced and how they conquered it through rebranded themselves, their program and communication tactics to educate, repair damage and create good will. New messaging and brand identity created the framework for implementation of traditional and innovative online tactics to reach the diverse audiences. As the City continues, creative leave behinds guide customers on topics like reading your bill and water conversation.

Padre Dam Utility Water District provides quality drinking water, recycled water and wastewater management. Their 2015 Comprehensive Facilities Master Plan (CFMP) provides long range planning and reflects issues, trends, regulations and analysis to provide recommendations for improvements over the next 25 years. To ensure the 400 page technical document would accurately tell their Master Plan story and build support amongst all target audiences from decision makers to the customer, the District reimagined the document in a highly visual way by reinventing the key messages within a 10 page graphical brochure.

Brief Biography and/or Qualifications
Ms. Pallari leads HDR’s in-house Strategic Communications and Public Involvement group with 19 years experience as a project manager who focuses her expertise in conducting effective communications, education, and outreach programs for large and small infrastructure projects in community planning, water/waste water, transportation, environmental, federal and healthcare. She has extensive hands-on experience in developing and implementing multi-faceted and strategic public involvement programs for local, state, federal, and commercial clients during early planning, through environmental (CEQA and NEPA processes) and into design and construction phases; often working as an extension of staff and lead liaison with the community. Her experience affords her the ability to work within highly complex and technical environments to bridge communications with the public, understand their issues, and work collaboratively to address concerns and solve problems ensuring the project stays on track. Kim’s experience includes working within rural or urban settings to engage a wide and diverse target audience that spans the general public to local, regional, and state leaders

11:15am - 12:00pm
ID: 271 / Session 03A part 1: 2
Main Technical Program
Topics: Outreach/Communications
Keywords: strategic communications, transparency, utility management

Transparency Is Just Telling It Like It Is – Isn’t It?

Nicki Pozos, Libby Barg

Barney & Worth, United States of America;

Ratepayers are telling utilities they want transparency in how decisions are made and projects are implemented. Technical professionals often interpret transparency as being based solely on facts, thinking of transparency as just the accurate transmittal of technical information. But to the public, transparency is not just about the information – it’s a feeling. One of the main barriers to feeling transparent is when information is complex and difficult to understand, even if it is accurate. It gives the feeling information is being occluded, even if that is not the intent.

This presentation will discuss approaches to convey in information in a way that is both technically accurate and feels transparent. The presentation will include audience interaction, having participants practice transforming complex information into easy-to-understand text.

Brief Biography and/or Qualifications
Nicki Pozos brings a diverse background, encompassing a PhD in Civil Engineering, former work as a life coach, and current work helping leaders evolve their relationships with their staff, themselves, and their communities. Nicki was a founder of the Portland Women in Leadership Symposium and a new organization, Women Leading Water, dedicated to creating a more equitable future. She aspires to be the world’s first engineering psychologist, bringing engineering thinking to understanding what makes people tick!
 
10:30am - 12:00pmSession 04A part 1: Clarifiers and Filtration
Session Chair: Lazaro Eleuterio, Washington State Department of Ecology;
Boise Centre East 410B 
 
10:30am - 11:15am
ID: 188 / Session 04A part 1: 1
Main Technical Program
Topics: Headworks
Keywords: Clarifier, Hydraulics, DSS, FSS, Testing

Practical Field Techniques and Methods to Assess Secondary Clarifier Performance

Frank Dolemeyer1, Joyce Chang2, Theresa Gregonia1, Vince Chiu1, Kim Fries2

1Metro Vancouver; 2Jacobs; ,

In a secondary wastewater treatment facility, clarifiers are the final critical step for solids/liquid separation producing effluent that meets regulatory limits for total suspended solids prior to discharge. In-situ clarifier hydraulics are crucial to a clarifier’s efficiency and performance. Typical measures of secondary clarifier performance include effluent suspended solids concentration and solids capture efficiency at varying flow rates. Other clarifier performance indicators include surface overflow rates, solids loading rate, sludge blanket depth, and return sludge rate. This presentation covers the application of practical field techniques and methods on which operators can assess a clarifier’s hydraulic performance.

In 2001, the Water Environment Research Foundation (WERF) and Clarifier Research Technical Committee (CRTC) published a guidance document on protocols for evaluating secondary clarifier performance. The document outlines detailed steps for testing a clarifier and troubleshooting clarifier issues. Metro Vancouver operations staff have been regularly assessing the performance of secondary clarifiers at the Northwest Langley Wastewater Treatment Plant using the dispersed suspended solids/flocculated suspended solids (DSS/FSS) tests described in the WERF/CRTC protocol. In addition to the regular tests, Metro Vancouver also conducted a 2-month intensive test program in 2017 to further evaluate clarifier performance under different flow conditions.

This presentation will provide an overview of the test program, demonstrate DSS/FSS sampling techniques using a Kemmerer sampler, present two years of data, and highlight key lessons learned. The results from the 2017 intensive test program, including additional DSS/FSS test points beyond the standard WERF/CRTC protocol and dye test results, combined with microscopic observations of microorganisms, illustrate how test data can be used to assess a clarifier’s hydraulic performance and assist operators in identifying where to focus efforts on improving overall plant performance.

Brief Biography and/or Qualifications
Frank Dolemeyer is currently Operations Supervisor at Metro Vancouver’s Northwest Langley Wastewater Treatment. Frank has 30 years of operating experience in secondary wastewater treatment at Metro Vancouver’s Lulu Island (70 MLD) and Annacis Island (500± MLD) Wastewater Treatment Plants in addition to Northwest Langley (12.5 MLD). Frank was involved with the commissioning of new secondary clarifiers at Northwest Langley which included performance testing and working with Jacobs in the clarifier testing program.

Joyce Chang is a wastewater process engineer with Jacobs. She has 15 years of experience in the design and commissioning of water resource recovery facilities in North America. Based in Vancouver, British Columbia, Canada, Joyce has been working closely with Metro Vancouver operations staff to assess secondary clarifier performance at the Northwest Langley Wastewater Treatment Plant and led the engineering effort in setting up the clarifier testing program.

11:15am - 12:00pm
ID: 230 / Session 04A part 1: 2
Main Technical Program
Topics: Headworks
Keywords: Seconcary Clarifier, Blanket Filtration, Adaptive Inlet

Stress Testing of a Secondary Clarifier with an Adaptive Inlet Structure

Mario Benisch1, JB Neethling2

1HDR Portland, OR , United States of America; 2HDR Folsom, CA, United States of America;

Conventional clarifiers are generally limited in their performance by the settling characteristics of the biological sludge and hydraulic conditions in the clarifier. In general, secondary clarifier (SCL) effluent total suspended solids (TSS) less than 10 mg/L are difficult to achieve consistently. The Hydrograv Adapt variable inlet structure (HA) changes that.

Unlike traditional inlet structures, mixed liquor is introduced near the bottom of the clarifier below the sludge blanket. In addition the inlet elevation and opening height adapts to the load thus always operating in ideal hydraulic conditions. Embedded in the functioning principal is the blanket filtration. Since MLSS is introduced near the bottom of the sludge blanket, all flow has to travel (filter) through the blanket. The results are impressive.

At Moers-Gerdt the average annual TSS concentration for 2017 is 1.5 mg/L. To investigate the performance of an HA clarifier under peak load conditions a full scale stress test was conducted at the Moers-Gerdt facility Nov 14th 2017. Pushing 100% of the plant through one of three clarifiers, effluent turbidity never exceeded 1.0 ntu and was closer to 0.5 most of the time.

The technology has the potential to reduce the compliance cost for utilities to meet lower effluent limits by improving solids capture in the clarifier. Upgraded clarifiers have demonstrated a 60% to 95% reduction of clarifier effluent solids. Full scale experiences show effluent from a HA clarifier can rival that of a sand filters. In fact, at two installations plant staff have since taken the effluent dual media filters offline as they are no longer required for compliance. To quote the lead Operator at Moers Gerdt, Guido Hammer “In my opinion this best innovation in wastewater treatment in the last 30 years”.

Brief Biography and/or Qualifications
1998: Graduated from University of Stuttgart, Germany with MS in Environmental Engineering
Since 1998 with HDR in Portland OR
Now senior wastewater process engineer with focus on nutrient removal and recovery.
 
10:30am - 12:00pmSession 05A part 1: Innovation with old technology
Session Chair: Angie Estey, Trane;
Boise Centre East 430 
 
10:30am - 11:15am
ID: 221 / Session 05A part 1: 1
Main Technical Program
Topics: Innovation
Keywords: ammonia, lagoon, case, cold, nitrification

Designing Lagoon-Based WWTPs for <1 mg/L Ammonia in <34°F Water: The Case of Harrah, Washington

CJ Strain1, Ted Pooler2

1Nexom, United States of America; 2HLA Engineering and Land Survey, Inc., United States of America; ,

Ammonia limits are in place in nearly every corner of North America, and for good reason. But in small- and medium-sized communities—like Harrah, WA—who are reliant on lagoon-based wastewater treatment that was never designed for nitrification, operators and their consultants may not be certain of what works and what doesn’t when it comes to beating these limits.

This presentation will cover the causes of lagoon nitrification failure—particularly related to cold lagoon effluent that can fall to <1°C in winter—and the validity of options that purport to beat those limits year-round (including recent developments in MBBR-based technologies as well as SAGR post-lagoon nitrification). It cuts through marketing noise to discuss the common pitfalls when piloting new technologies and how to evaluate data sets. Further, it addresses the question of inevitable nitrate limits, and how lagoon-based WWTPs are uniquely suited to address them.

The conclusions will be drawn from the experience of hundreds of lagoon upgrades over the last 20 years, including the Harrah, Washington wastewater treatment plant, where HLA Engineering and Land Surveying, Inc. chose to implement the SAGR technology to retain the existing lagoon infrastructure and treat the 70,000 GPD design flow so the plant can beat its 1.93 mg/L Winter Ammonia objective. The presentation will examine the engineers’ decision-making process and what made SAGR technology the logical choice, as well as the challenges overcome in implementing the SAGR at the Harrah site, within their lagoons’ existing footprint.

The presentation will also draw on the data set collected from the Harrah site as well as additional years of data collected at a comparable site in Kennard, Indiana (for even greater context) which explain why, even in the face of their ammonia limit, their operators sleep easy. Kennard’s data shows that since commissioning in 2014, the site’s Ammonia levels have consistently measured well below that limit, averaging 0.17 mg/L while also producing BOD levels averaging 1.92 mg/L and TSS levels of 4.97 mg/L.

Brief Biography and/or Qualifications
Presenter Bio: CJ Strain, P.E.
Cornelius (CJ) Strain, P.E., is Nexom’s Product Manager, Filtration. He has two decades of professional experience with over twelve years in wastewater process improvement. Mr. Strain has specialized in filtration technologies and nutrient removal applications emphasizing process design optimization, increasing levels of treatment, process sustainability and improvement of conventional treatment economics. He utilizes an applied foundation in the sciences paired with construction experience to provide effective and reliable solutions to today’s treatment challenges.

Presenter Bio: Ted Pooler, P.E.
Theodore W. (Ted) Pooler began his civil engineering career in 1980 as an Assistant Engineer in Spokane, Washington, and came to HLA in 1989, where he is privileged to serve as Vice President. He is responsible for the planning, design, preparation of plans and specifications, and construction contract administration for water and wastewater facilities, residential subdivisions, drainage facilities, and streets and highways.
Ted is experienced with all facets of water system design, including system analysis and planning, water treatment facilities, pipeline design, and storage reservoirs. His wastewater related experience includes gravity sewer pipelines, lift stations, and wastewater treatment facilities. A graduate of both Washington State (BS ’80) and the University of Washington (MS ‘83), Ted is a registered Professional Engineer in Washington, California, and New Mexico, and a member of the American Society of Civil Engineers, WEF, National Society of Professional Engineers, Tau Beta Pi Engineering Honorary, and the Washington State University’s Civil Engineering Advisory Board.

11:15am - 12:00pm
ID: 198 / Session 05A part 1: 2
Main Technical Program
Topics: Innovation
Keywords: Lagoon, submerged fixed-film, wet-weather, nitrification

Soggy in Snohomish - Lagoon Nitrification via Biofilm Media 5 Years of Performance

Wayne Flournoy, Jeff Danner

Entex Technologies Inc., United States of America; ,

Lagoon systems are one of the oldest and most popular methods of wastewater treatment used today. They have remained appealing for both municipal and industrial treatment applications for their relatively low capital cost, low operating costs, and ease of maintenance. While aerated lagoons are typically well suited for carbonaceous biological oxygen demand (CBOD) removal, their susceptibility to inclement weather can make it difficult to maintain consistent biological nutrient removal. The City of Snohomish, Washington added fixed biofilm media in 2012 to solve a unique set of challenges in maintaining treatment at its wastewater treatment facility. While the plant’s average month daily flow is 1.2 MGD, maximum month daily flows can reach up to 7.9 MGD due to heavy rainfall events. High flows through the plant used to wash out the microbial populations responsible for ammonia transformation, making it difficult to maintain consistent nitrification. In 2012, the City completed a facility upgrade which included retrofitting its three partial-mix lagoons with a total of fifty-four (54) submerged fixed-film (SFF) modules, to improve CBOD removal and nitrification performance. To date, the SFF media system has proven to be an effective solution to the treatment issues presented by wet weather flows at the facility, as it quickly helped the plant meet or exceed its effluent criteria for CBOD and ammonia. In addition, the SFF system resulted in significant cost savings for the City, as it required less additional footprint and lower operating costs compared to alternative solutions.

This paper reviews the performance, effectiveness and economics over the 5-year span since the conversion.

Brief Biography and/or Qualifications
Wayne Flournoy, President & CEO of Entex Technologies Inc began his water and wastewater career over 25 years ago. He has extensive technical and management experience with advanced wastewater treatment technologies, including both fixed and moving media systems, as well as IFAS and submerged fixed film systems. Prior to Entex, Wayne served as President of Kaldnes North America, delivering moving media systems, with responsibility for all activities for this North American subsidiary of a Scandinavian company. Before that, Wayne was Director of Water and Wastewater for Brentwood Industries where he gained extensive experience with attached growth biological systems. He is well versed in biological nutrient removal and activated sludge systems, having been involved with some of the industry’s groundbreaking work on biological phosphorus removal. Wayne has also contributed to industry leadership by serving two terms on the Water Environment Federation’s Manufacturing and Representative Committee (MARC).
He was recognized for his role as co-founder of Entex Technologies as a 2011 Top 50 Catalyst Entrepreneur by Business Leader magazine. Entex has received recognition as a North Carolina Company to Watch in 2010 by North Carolinas’ CED. Additionally, Entex has been recognized by Frost & Sullivan for the North American Water and Wastewater Industry, in 2009 for Customer Service Leadership and in 2014 for Product Line Strategy Leadership.
Wayne has a BS in Mechanical Engineering and an MBA, both from the University of Virginia.

Jeff Danner, PhD serves as Entex as Vice President of Engineering. He has over 20 years of experience and has held senior management positions in Research and Development, Engineering, and Operations in both the chemical and biotechnology industries. Jeff has a Bachelor’s degree in Chemical Engineering from the University of Virginia and Master’s and Ph.D. degrees in Chemical Engineering from the University of Pennsylvania.

Jeff supports Entex’s process design work, coordinate R&D and piloting programs, and helps to maximize financial return on the company’s intellectual property and technical expertise by accessing new markets and expanding our geographic reach.

Jeff has lived and worked in Denmark for two years and been responsible for engineering operations in four continents. In addition to his technical background, Jeff has unique insights into our customer’s perspective through his service on the Board of Directors of the OWASA water and sewer authority for Chapel Hill and Carrboro, North Carolina.
 
10:30am - 12:00pmSession 06A part 1: Stormwater
Session Chair: Cari Simson, Urban Systems Design;
Boise Centre West 120B 
 
10:30am - 11:15am
ID: 176 / Session 06A part 1: 1
Main Technical Program
Topics: Stormwater
Keywords: GSI, stormwater, green stormwater infrastructure, innovation, CSO

Green Stormwater Infrastructure for CSO Control— A Cost-Performance Model to Address Uncertainty & Risk in GSI design

Alice Lancaster1, John Phillips2

1Herrera Environmental Consultants; 2King County Wastewater Treatment Division; ,

The King County Wastewater Treatment Division (WTD) is embarking on large-scale implementation of roadside green stormwater infrastructure (GSI) retrofits to help control combined sewer overflows (CSOs). To support this effort, an innovative model was developed that allows decision makers to account for uncertainty and risk in design.

The GSI cost/performance model allows comparison of various GSI retrofit options given variability and uncertainty in right-of-way conditions and infiltration potential. Based on block-scale user inputs, the model assesses feasibility, CSO reduction performance, and cost for a suite of GSI practices. The model can be run in a probabilistic mode that uses a Monte-Carlo simulation to evaluate performance for a range of possible inputs, providing the ability to address variability and uncertainty in parameters such as: effective impervious surface area draining to the street, shallow infiltration rate, deep infiltration well capacity, and unit costs.

The Excel-based model includes bioretention, walled bioretention, and curb bulbs with a range of infiltration approaches (infiltration to shallow soil and infiltration to deeper soil horizons using pit drains, drilled drains and deep wells). The model also includes proprietary filtration treatment (Filterra) to deep wells.

The probabilistic model utilizes Crystal Ball software and is being used to evaluate a range of typical retrofit scenarios anticipated for future WTD GSI projects. The results of this analysis will be used to develop tools to guide alternatives development and evaluation, such as cost effectiveness curves and decision flow charts. In addition, this work will address key questions to support programmatic siting and design guidance, such as “Which block typologies are the most feasible/cost effective for GSI retrofits?” and “In what surface and subsurface conditions are deep infiltration practices more cost effective?”.

This presentation will include a description of the model, the design tools developed using the model, and the resulting programmatic siting and design guidance.

Brief Biography and/or Qualifications
Alice Lancaster is a civil engineer at Herrera in Seattle Washington, offering specialized expertise in innovative stormwater management for CSO control. For 18 years, she has worked with western Washington jurisdictions to develop green stormwater infrastructure (GSI) engineering standards and design tools that reflect the latest science and engineering advances. As a senior designer, Alice has developed basin-wide GSI retrofit plans and GSI design packages for private and public projects, including complex right-of-way retrofits. She enjoys developing GSI design guidance and implementation tools that help CSO jurisdictions “lead with green”.

John Phillips has worked for the King County Wastewater Treatment Division for 17 years. He is currently the combined sewer overflow program manager. Over the last nine years he has worked on the Combined Sewer Overflow Control Program and is currently managing the program and implementation of the Long Term Control Plan. John has developed and is managing the Green Stormwater Infrastructure (GSI) and Climate Change Adaptation programs. His climate work has been referenced in both the IPCC and National Climate Assessment reports. He is Past President of the Pacific Northwest Clean Water Association (PNCWA). He serves on sustainability and climate action teams at King County. John has a Bachelor of Science Degree in Environmental Science from Oregon State University and served six years as a sonar man in the U.S. Navy on-board nuclear submarines.

11:15am - 12:00pm
ID: 106 / Session 06A part 1: 2
Main Technical Program
Topics: Stormwater
Keywords: Green Stormwater, Multi-Use

Multi-Function/Use Stormwater Facilities - The Future of Stormwater Management?

Christopher May

Kitsap County Public Works (KCPW), United States of America;

Kitsap County Public Works (KCPW) has designed and constructed a number of stormwater management facilities that have included significant features address functional goals other than stormwater treatment. These functions include community gathering spaces (parks?), walking trails, wildlife habitat, and other aesthetic related uses. With the costs for regional stormwater facilities and stormwater retrofits increasing, gaining public support and acceptance for stormwater treatment has become more difficult. The public also expects more cooperation from the various branches of local government to improve project cost-benefit ratios and provide multiple uses for projects as a whole. Green stormwater solutions (GSS) provide a unique opportunity to incorporate open-space or community amenities into stormwater treatment facilities on a neighborhood or regional scale. This presentation will show examples of this concept and stimulate discussion of other multi-use/function approaches to public works projects of the future.

Brief Biography and/or Qualifications
Dr. Christopher W. May is a freshwater ecologist and environmental engineer with expertise in stream ecology and stormwater management. His areas of interest include green stormwater solutions (GSS) or low impact development (LID) and urban watershed restoration, including stream-floodplain restoration. Currently, he is the Senior Program Director of the Kitsap County Public Works (KCPW), Stormwater Division and the Clean Water Kitsap (CWK) Program. Prior to joining KCPW, Dr. May was the leader of the urban watersheds group at Seattle Public Utilities (SPU). Prior to that he was a senior research scientist and engineer at the Battelle Marine Sciences Laboratory (MSL) and a research engineer at the University of Washington Applied Physics Laboratory (UW-APL). His research focused on the cumulative impacts of urbanization on native salmonids in small streams in the Puget Sound lowland eco-region. Dr. May is an adjunct faculty member of Western Washington University, Huxley School of Environmental Studies and the University of Washington, Environmental Science and Engineering Programs.
 
10:30am - 12:00pmSession 07A part 1: Solids
Session Chair: Benjamin Haws, J-U-B Engineers; bhaws@jub.combhaws@jub.com
Boise Centre East 410C 
 
10:30am - 11:15am
ID: 206 / Session 07A part 1: 1
Main Technical Program
Topics: Solids
Keywords: magnesium hydroxide, hydrogen sulfide, anaerobic digestion, sustainability, modeling

Sulfur Sequestration in Anaerobic Digestion Without the Use of Scrubbers

Tyson Schlect1, Doug Kelley2

1T-O Engineers, United States of America; 2Inland Environmental Resources, United States of America; ,

Sulfur can be a smelly culprit in wastewater treatment systems. It becomes problematic in its reduced form of hydrogen sulfide gas (H2S), to which it is converted via biotransformation in almost any anaerobic environment. H2S is commonly associated with collection systems and headworks, but is also a key consideration in anaerobic digestion systems, as it appears as a biogas constituent. When biogas is burned, H2S is converted to sulfur oxides and emitted to atmosphere. As sulfur dioxide is a primary contributor to “acid rain”, emissions can lead to rigorous air permitting limits. If biogas is utilized in an energy recovery system, the H2S can severely damage equipment.

Numerous biogas scrubbers are available on the market, but one simpler and more environmentally sustainable solution is often overlooked. Using fundamental aqueous chemistry principles, a regional food processor adopted a strategy to sequester sulfur in the liquid stream by raising the pH slightly in the anaerobic digester. This would reduce the concentration of H2S in the biogas at the source rather than cleaning it up later with a scrubbing system. Magnesium hydroxide (Mg(OH)2) was selected to achieve system buffering and pH increase because it provides stable digester operation and is environmentally sustainable.

The first fundamental principal at play is Henry’s Law, which states that if less H2S is present in the digester liquid, then less will be present in the biogas. The second fundamental principal is acid/base speciation in liquid, which means that as pH increases more of the total sulfur in the digester will be present as HS- rather than H2S. The overall effect of these two principles is that the higher the pH, the less H2S is in the biogas.

Brief Biography and/or Qualifications
Tyson Schlect holds an M.S. in Civil Engineering from the University of Washington, and specializes in treatment system modeling and design in both municipal and industrial contexts.

Doug Kelley holds a Ph.D. in inorganic chemistry from Iowa State University, and is an expert in the areas of scale formation, corrosion control, microbial control, and wastewater treatment.

11:15am - 12:00pm
ID: 171 / Session 07A part 1: 2
Main Technical Program
Topics: Solids
Keywords: Struvite, brushite, phosphorus release, phosphorus recovery, dewaterability improvement

Comparison of Phosphorus Recovery Through Pre-anaerobic-digestion Brushite Precipitation And Post-Anaerobic-Digestion Struvite Crystallization

Zhongtian Li, Jerod Swanson

Centrisys/CNP, United States of America;

Phosphorus removal and recovery from sludge stream in water resource recovery facilities (WRRFs) bring multiple benefits including phosphorus recovery, digester and pipes protection, and improvement of sludge dewaterability. This study will evaluate two phosphorus recovery options through brushite (CaHPO4•2H2O) precipitation and struvite (MgNH4 PO4•2H2O) crystallization in terms of treatment process, phosphorus release and recovery strategy, and impacts on solids treatment processes.

Pre-anaerobic-digestion phosphorus recovery through brushite precipitation by CalPrexTM technology. The CalPrex system consists of three key processes. First, an acid phase digester is utilized for optimizing phosphorus release in sludge. Second, soluble phosphate is separated from sludge through a phosphorus stripping centrifuge, generating phosphorus rich centrate. Third, the phosphorus rich centrate is treated in controlled pH and calcium hydroxide dosage for brushite formation and precipitation. The phosphorus reduced sludge cake is recombined with a portion of the brushite clarifier effluent before piping to a methane phase digester.

Post-anaerobic-digestion phosphorus recovery through struvite crystallization by AirPrex® technology. The digested sludge is fed into a reactor located immediately after the anaerobic digester (AD). The reactor is equipped with air stripping; this will increase the pH value of the digested sludge. The addition of magnesium salts leads to the formation, and ultimately, to the sedimentation of struvite. The precipitated struvite crystals are extracted, washed and dewatered by a struvite washing unit immediately following the reactor. No additional chemicals or heat sources are needed to dry the product.

The objective of this study is to evaluate the performance of CalPrex and AirPrex pilot tests in terms of treatment process, phosphorus release and recovery strategy, and impacts on solids treatment processes. Both CalPrex and AirPrex pilot units are designed at the same hydraulic loading. The performance of dewaterability of acidogenically digested sludge and the anaerobically (methanogenic) digested sludge are compared. The phosphorus removal and recovery potentials are evaluated between brushite precipitation and struvite crystallization.

Brief Biography and/or Qualifications
Li joined Centrisys/CNP in 2016 and is the lead developer of pilot test and project commissioning procedures for phosphorous recovery and thermo-chemical hydrolysis process initiatives in North America. Li has nine year of research and working experience in wastewater, water and sludge treatment. He received an M.S. from the University of Nebraska-Lincoln and a Ph.D. from the UCLA in Civil Engineering.

Jerod has more than fifteen (20) years of engineering and technical sales experience in the water and wastewater industry, as well as other related industries. Jerod joined Centrisys in 2014 as a Regional Sales Manager. Some of his previous roles include Industrial Regional Sales Manager and Commercial Leader at Parkson Corporation, and International Sales Manager at Aeration Industries. Jerod also served as a Navy Nuclear Engineering Officer for five (5) years prior to entering the private sector. He has a Bachelor’s degree in Mechanical Engineering and an MBA, both from the University of Minnesota.
 
10:30am - 12:00pmSession 08A part 1: Secondary Treatment
Session Chair: Mark Walter, Waterdude Solutions, LLC;
Boise Centre West 110A/110B 
 
10:30am - 11:15am
ID: 170 / Session 08A part 1: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: EBPR, SRT, C/P, mechanisms

Enhanced Biological Phosphorus Removal Process for Achieving Extremely Low Effluent Phosphorus Levels

Bridget {Yueyun} Li Tse1,2, Per Halkjær Nielsen Nielsen4, April Gu2,3

1Black and Veatch, United States of America; 2Northeastern University, United States of America; 3Cornell University, United States of America; 4Center for Microbial Communities,Department of Chemistry and Bioscience,Aalborg University, Aalborg, Denmark;

U.S. EPA regulations are now implementing increasingly stringent wastewater phosphorus (P) controls to more areas across the country. The TMDLs for some sensitive areas (e.g. Spokane River basin) are as low as 0.05 mg P/L, and more facilities are faced with the extremely low P targets (e.g. 0.01 – 0.06 mg-P/L), which are near the limit of P removal technologies currently in practice. Enhanced biological phosphorus removal (EBPR) process is considered a promising strategy to simultaneously achieve sustainable P removal and P recovery, with economic and environmental advantages over traditional chemical/physical P removal technologies, especially for cases to meet compliance of extremely low effluent P levels. However, due to the yet insufficient fundamental understanding of the mechanisms involved in EBPR processes, there is still a lack of mechanisms-based design, model and optimization guidance, and the advantages of EBPR has not yet been fully realized.

In this study, we focused on systematically investigating the combined effect of two critical operational parameters, SRT and influent C/P ratio, particularly, to identify the key factors that govern the EBPR stability variation, using state-of- art and innovative microbial ecology tools that enable simultaneous examination and monitoring of both phylogenetic and metabolic/functional characteristics and dynamics in EBPR systems.

Our EBPR systems were demonstrated to be able to achieve < 0.01 mg P/L effluent phosphate level. Higher stability was observed with higher influent C/P ratio, and an optimal SRT range was revealed for each influent C/P conditions. The long-term P removal stabilities of our C-limited EBPR systems provided with relatively low influent C/P ratio were positively correlated with polyphosphate accumulating organisms (PAO) relative abundance, while the stability of those operated under relatively favorable conditions (i.e. C non-limiting condition with high influent C/P ratio) was found positively correlated with the overall EBPR phylogenetic diversity but not PAO or glycogen accumulating organisms (GAO) abundances.

Brief Biography and/or Qualifications
Bridget has 6 years of research experience and 2 years of process engineer experience in the water and wastewater industry in the USA. Bridget’s experience includes: modelling bacterial filtration and deposition behavior in porous media systems; optimizing biological nutrient (N, P) removal processes; identifying and isolating phosphorus removal microorganisms; development of conceptual and detailed design drawings for wastewater treatment plants; hydraulic calculations; BioWin modelling; lab-scale and pilot-scale studies of innovative nutrient removal technologies. Bridget obtained her PhD degree from Northeastern University with the dissertation entitled “Link Phylogenetic and Phenotypic Characteristics to Reveal Enhanced Biological Phosphorus Removal (EBPR) Process Mechanisms”.

11:15am - 12:00pm
ID: 200 / Session 08A part 1: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: BPR, batch testing, VFA, PHA

Characterizing BPR Activity to Understand Overall Process Health

Gavin Bushee, Peter Schauer, Adrienne Menniti

Clean Water Services, United States of America;

Consistent and stable BPR is pivotal in meeting strict effluent limits and providing recoverable phosphorus downstream of the dewatering process. Historically, the BPR process can operate consistently for long periods of time, only to become upset during critical times of year. Developing a better understanding of the factors influencing the stability of the process is important so that different process configurations or corrective measures can be taken without relying on chemical phosphorus removal.

Factors affecting BPR include operational conditions, influent characteristics, availability of volatile fatty acids (VFA), rainfall, and competition for substrate with denitrifiers or glycogen accumulating organisms (GAO). However, readily available data for evaluating process performance is often limited to effluent phosphorus or sampling of the influent stream or mixed liquor, which is usually difficult or impossible to adequately use to predict process instabilities that lead to upsets. Extensive research and bench testing of phosphorus release and uptake has been performed at the treatment facilities to better characterize the BPR process and determine the most important factors affecting its stability.

Key findings of current bench testing indicate that:

• Batch phosphorus uptake rates of sludge from the end of the aeration zone can be substantial, indicating excess storage products (i.e. polyhydroxoalkoanate) remaining in the sludge.

• Phosphorus uptake rates are mainly a factor of PHA content and abundance of phosphorus accumulating organisms (PAO) (i.e. total PAO fraction) in the sludge.

• Batch phosphorus uptake rates correlate well with basin removal performance and VFA load, therefore, online measurements may be a useful tool in predicting process upsets and knowing when to shift VFA inventory. The status of an online uptake system developed at Durham will be presented.

• PAO/GAO competition is unlikely to be a current factor in BPR stability based on phosphorus release to acetate uptake ratios (P:HAc) and qPCR.

Brief Biography and/or Qualifications
Gavin Bushee is currently an Operations Analyst at Clean Water Services and conducts research and testing in the Wastewater Treatment Division. He earned his BS and MS degrees in Environmental Engineering at Oregon State University.
 
12:00pm - 1:10pmLunch—Monday Networking Luncheon

Buffet—Complete Packages or Mon. Lunheon ticket required

Boise Centre East 400 
1:15pm - 2:00pmScholarship Committee Meeting
Boise Centre West 140 
1:15pm - 2:45pmSession 01A part 2: Leadership
Session Chair: Robert Lee, Murraysmith;
Boise Centre East 420B 
 
1:15pm - 2:00pm
ID: 239 / Session 01A part 2: 1
Monday Oct. 22 Program
Topics: Leadership
Keywords: Leadership, Generational Handoff, Professional Development, Management

Success with a New Generation of Leaders

John Beacham, Monica Ott

City of Post Falls;

From 2014 through the present, the City of Post Falls experienced a major demographic shift in personnel. Many experienced professionals retired and carried with them decades of knowledge and experience. At the same time, the City is experiencing both a major growth phase and significant new regulatory obligations which necessitate staffing increases and major capital upgrades. The first of these presents the challenge of hiring candidates from the new generation for both new and recently vacated positions and the second puts a big responsibility on these newly-hired, potentially inexperienced candidates. Currently, the top four leadership position within the Wastewater division are held by employees under the age of 35, yet the department is facing the largest projects and most stringent regulatory requirements it has seen to date. Of the remaining Operations staff, all but one are over 40 which poses inter-generational challenges in forming a cohesive Utilities team. The City’s Utilities Manager will share his perspective on being hired into a leadership role supervising staff with greater years of experience. He will also share his experiences recruiting from a workforce with limited career experience. Filling one of the newest positions, the City’s Environmental Specialist will share her perspective on joining a department in a professional role with limited industry experience. She will share her experiences trying to gain respect, earn credibility and demonstrate value to the division. To meet the challenges successfully, a significant goal and subsequent accomplishment of the new generation of management within the Division has been to establish reputations as reliable professionals within the City. These efforts have paid off. In discussions with long-time employees morale is at its highest level in years and the Division sees strong support from the City Council on both projects and new initiatives.

Brief Biography and/or Qualifications
John Beacham is the Utilities Manager for the City of Post Falls where his responsibilities include oversight of the water, wastewater, and stormwater systems. He has a bachelor’s degree in Civil Engineering from the University of Idaho and a Grade IV Idaho Wastewater Treatment License. John has worked as an operator, a consultant and in regulatory compliance. Outside of work, John would prefer to be found hiking, climbing, or kayaking but is more likely working on house remodeling projects.

2:00pm - 2:45pm
ID: 256 / Session 01A part 2: 2
Monday Oct. 22 Program
Topics: Leadership
Keywords: women in leadership, mentoring

Strategies to Build a Workforce of Women Leaders

Jennifer Price1, Courtney O'Neill2, Shailee Sztern3

1GHD; 2AECOM, United States of America; 3Seattle Public Utilities; ,

40% of women who earn engineering degrees quit the profession. This is a major challenge for all of our organizations. A majority of these women leave because of the organizational climate, characterized by non-supportive managers or co-workers and general incivility. Another reason tends to be that women don’t see any long-term potential for themselves in this industry. One former woman engineer quoted, “It’s hard to justify the long hours to go nowhere”. The infrastructure industry, similar to other technical industries, is still lacking in sufficient female leadership at the highest levels of organizations. Our industry has on average over 40% women in the workforce, yet on average there is only 10-20% women in leadership at the executive levels. Our presentation will address strategies for both public and private sector employers and leaders to increase the pool of women leaders at all levels of the organization and start to increase diversity in succession planning and leadership. We conducted multiple focused interviews of senior women leaders in our industry, on both the public and private sectors. We also included a few women in other technical industries. We asked each of these leaders to identify their keys to success, characteristics of strong leaders, and strategies they used to improve their leadership and navigate their career. We will focus on strategies that can be used by employees, managers, and executives to improve their own leadership and help increase the number of women employees at all levels. These could include effective mentoring, handling difficult conversations, and stepping into your leadership potential.

Brief Biography and/or Qualifications
Shailee Sztern, Seattle Public Utilities, Project Manager
Shailee is a project manager and supervisor for SPU's drainage and wastewater projects.

Courtney O'Neill, AECOM, Water Resources Engineer
Courtney is a water resources engineer with ten years of experience in water resources planning. After receiving her undergraduate degree in Biosystems Engineering from Michigan State University, she worked for Texas A&M University, developing best practices and training courses for decentralized on-site wastewater treatment operators. She then went on to earn a Master’s degree in Water Supply Planning from the University of Washington, where she worked in the Water Resources Management and Drought Planning group with hydrology modeling, climate change forecasts and regional water planning.
Courtney’s broad array of technical and analytical skills have proven valuable to several large-scale multidisciplinary projects, including infrastructure reliability, resiliency, urban design, and master planning, flood protection, and alternatives analyses. In addition to her planning projects, she also leads the Pacific Northwest Water Market sector development at AECOM.
 
1:15pm - 2:45pmSession 02A part 2: Asset Management
Session Chair: Eric Habermeyer, Seattle Public Utilities;
Boise Centre East 410A 
 
1:15pm - 2:00pm
ID: 178 / Session 02A part 2: 1
Main Technical Program
Topics: Asset Management
Keywords: Condition Assessment, Asset Management

Ladies and Gentlemen Tip Your Cap For The City Of Portland Bureau of Environmental Services Wastewater Group's Systematic Condition Assessment Program

Mia Sabanovic

City of Portland/Bureau of Environmental Services, United States of America;

Condition assessment is vital for a comprehensive and robust utility asset management program. The Bureau of Environmental Services (BES) uses data generated by the Condition Assessment Program (CAP) to make strategic reinvestment decisions by systematically decreasing unforeseen asset failures and reducing overall business risk exposure. CAP is a two-way asset condition assessment communication conduit, from field experts to engineers to decision makers, and includes over 18,000 registered assets at two large wastewater treatment plants, 98 pump stations and appurtenances. The program is a comprehensive and proactive approach in defining the degree and pace of reinvestment required to meet and sustain optimal levels of service at an acceptable risk. The “super exciting” aspect of the program is that decisions are made on current information and there is a built in “means-to-madness” through a 2-level approach

Level 1 condition assessment includes visual and experience based assessment completed by operations and maintenance field technicians on a regular basis utilizing condition rating tables. Technicians communicate asset condition scores through the CMMS during preventive, predictive and corrective work order close out process or after completing inspection routes. After screening and prioritization, assets that have poor condition inspection scores are followed up with Level 2 condition assessment. Level 2 condition assessment entails a detailed analysis of the asset performance, invasive physical condition assessment, remaining useful life assessment, past failure history and performance. Level 2 condition assessment results in capital improvement project requests or modifications to the operational or maintenance strategies for identified assets to ensure business risk exposure reduction.

This presentation will describe how BES is realizing a culture set in life-cycle asset management that effectively integrates asset condition information to optimize asset reliability, extend useful life, and minimize asset life cost at an acceptable risk while meeting established levels of service.

Brief Biography and/or Qualifications
Mia Sabanovic is a registered Professional Civil Engineer with the BES Wastewater Group. She currently manages the BES condition assessment program and has over 10 years of experience in water/wastewater asset management.

2:00pm - 2:45pm
ID: 118 / Session 02A part 2: 2
Main Technical Program
Topics: Asset Management
Keywords: Asset Management, Management, O&M, Engineering, Finance

Successful Asset Management Programs: A Sum of All Parts

Jeff Theerman

Brown and Caldwell, United States of America;

By nature, water utilities recognize and understand the need for asset management; most understand that a managed approach designed to wring the most life out of each asset is the best way to optimize costs and ensure reliability. To that end, many have invested in the various components of asset management like third party condition assessment and computerized maintenance management systems. Many utilities have in-house engineering expertise that drive capital projects through design and construction, and financial expertise for reviewing budgets and rates. This being the case, why does a fully functioning Asset Management program remain elusive for US Water Utilities?

The reality is that most utilities struggle with really understanding how the asset management elements fit together to achieve success. Utilities often focus on the discrete elements of asset management without considering the human interconnections that make-up of the program. While each element is important, it is the sum of all the connected parts and their ability to function together that makes a program successful.

Asset Management depends on a clear understanding of the interconnected elements and committed team of players that has embraced the need to change long held methods and approaches. The concepts are not difficult but putting them into practice is daunting. When utilities think of asset management only as a series of building blocks they can lose sight of the complex web of staff interactions that create value.

This paper describes many considerations that are often missing in utility asset management programs. Attendees will gain insight on the critical linkages between asset management program elements and explore a real-world example of how these linkages and the human players involved can spell the difference between success and failure.

Brief Biography and/or Qualifications
Jeff Theerman is a Senior Utility Performance Consultant at Brown and Caldwell. In his role he advises clients about how to create sustainable continuous improvement in their organizations. He has advised a variety of clients on operational optimization, organizational redesign, change management, asset management and regulatory enforcement.
Jeff joined Brown and Caldwell after completing 28 years with the Metropolitan St. Louis Sewer District (MSD) serving as their Executive Director for the past nine years. The District operates seven treatment plants, 6500 miles of wastewater collection system, and 286 pumping stations. While at MSD, Jeff held a number of positions including management of the District’s largest wastewater treatment plant, management of the wastewater and stormwater collection system, and Director of Operations with overall responsibility of the utilities infrastructure operations and maintenance.
While at MSD and in his role as a senior consultant Jeff has been involved in various initiatives designed to improve overall utility performance including:
•Assisting Jefferson County Alabama in an operational assessment which assistance in their exit from bankruptcy.
•The merging of the wastewater treatment and collection systems departments with a total of 600 employees and six labor unions into one integrated department.
•The flattening of the organizational structure to increase span of control within the management team and to reduce management head count by 50%.
•Serving as a level of service subject matter expert for water and wastewater master planning efforts.
•Organizational development efforts to increase staff effectiveness and flexibility; reduce jurisdictional issues in job assignments, and increased efficiency in operations staffing.
•Operational assessments at various utilities with recommendations for improved performance.
 
1:15pm - 2:45pmSession 03A part 2: Public Outreach
Session Chair: Morgan Knighton, Gray & Osborne, Inc.;
Boise Centre West 120A 
 
1:15pm - 2:00pm
ID: 260 / Session 03A part 2: 1
Main Technical Program
Topics: Outreach/Communications
Keywords: Strategy, Communications, Stakeholder Alignment, Brand

Strategic Communications Connects the Dots and Defines One Water Journey

Holly Tichenor

Water Systems Consulting, Inc., United States of America;

The alternatives are evaluated. The treatment technology is proven. The schedule and cost are feasible. But, not all the dots are connected.

While agencies are working toward reliable and sustainable water solutions, achieving envisioned results require new degrees of collaboration, partnership, and communications. This shift is driven by many factors, including advancements in treatment technology, greater public awareness, impacts of climate change and more.

This presentation will utilize case studies from the drought epicenter, the Central Coast of CA, where in a very short period, utility leaders had to quickly assess and address traditional water management approaches to align stakeholders and close the water gap. We will look at 3-4 examples where strategic planning and communications is the One Water implementation connector.

• Multi-Section Strategic Plan Update. City of San Luis Obispo desired to make their Utility Strategic Plan (Plan) more relevant, actionable, and transparent to staff. The effort identified gaps impacting project and strategic plan use and implementation. A cross-department approach to align around a common vision and plan.

• Water Program Branding. The City of Pismo Beach worked collaboratively with its five agency partners to rebrand and improve communications around its $30M groundwater recharge program. The effort demonstrates the value of branding water with the community interest at the forefront.

• Communications for Funding Support. Partners within the Big Bear Valley have invested in communications support that simply conveys a complex story and the critical need to restore and protect this natural gem.

• Workshop Role Playing. The effort demonstrates how a role-playing interactive workshop approach has promoted water leaders to look at water challenges differently to arrive at better solutions.

In summary, the case studies demonstrate how strategic plans, frameworks, and effective communications is an essential ingredient for developing successful water solutions.

Brief Biography and/or Qualifications
Ms. Tichenor brings more than 20 years of communications experience in the water and wastewater industry. Her work has taken her across the US in supporting, guiding, and training clients, engineers, and other marketing and communications professionals in the best practices of visual and written communications. She is a writer, former newspaper reporter, and trained content development professional/journalist. Focusing on the value of effective industry communications, she has been an advocate, creator, and supporter of communications that advance programs, projects, organizations, and initiatives. She has experience in all forms of communications and has had a lead role in all numerous large programs throughout California’s Central Coast. Her passion for effective communications in our industry has led to her serving on key roles in industry-leading professional organizations, including current co-chair of Association of California Water Agency’s Education Committee, and former Chair of Water Environment Association of Texas’s Government Affairs Committee. Additionally, her experience in many cultures, communities, and with numerous agencies gives her the unique ability to understand what relates locally.

2:00pm - 2:45pm
ID: 258 / Session 03A part 2: 2
Main Technical Program
Topics: Outreach/Communications
Keywords: Water Reuse, Public Involvement, Planning, business case evaluation

Leveraging Community Input to Define an Unlikely Path to Water Reuse

Matthew Gregg1, Nate Runyan2

1Brown and Caldwell, United States of America; 2City of Nampa, Idaho; ,

The City of Nampa, Idaho has been working for several years to define the preferred path to meeting increasingly stringent water quality regulations for their wastewater system. Acknowledging the magnitude of this decision and the impact to the community, the City elected to utilize a robust stakeholder engagement process to support the evaluation process conducted as part of their recently completed planning efforts. The goal of these efforts was to understand the community’s priorities related to water so that these could be represented in the alternatives analysis process for the City’s facility planning.

The City used an engaged group of approximately 60 citizens as the primary means of gather public input. Beginning early in the City’s planning process, this group helped shape the goals for the City’s upcoming investments by relating them back to the City’s Strategic Plan. Technical alternatives were developed and presented to the citizen group from this input and guidance. The City then described how each alternative aligned with the citizen and community’s goals and presented approaches to quantify this alignment (or misalignment in some cases) so that the community interests could be considered in parallel with the technical aspects of the project. This process lead the City to develop a water reuse strategy that supports the community’s interest to make full use of their water assets and support economic development within the City, a somewhat unexpected outcome at the outset of the process.

This presentation will focus on the City’s path to developing a water use program grounded in its community’s interests. Specific attention will be given to how the public process was administered to get feedback that could be incorporated into the technical alternatives evaluation.

Brief Biography and/or Qualifications
Matthew Gregg is a program manager, client service manager, project manager, and wastewater engineer in Brown and Caldwell’s (BC) Boise office. Matt’s primary focus is assisting clients with long-term utility management decisions and large program execution. Matt has a master’s degree in civil engineering with a focus in wastewater engineering and a bachelor’s degree in civil engineering, both from the University of Idaho.
 
1:15pm - 2:45pmSession 04A part 2: Clarifiers and Filtration
Session Chair: Lazaro Eleuterio, Washington State Department of Ecology;
Boise Centre East 410B 
 
1:15pm - 2:00pm
ID: 214 / Session 04A part 2: 1
Main Technical Program
Topics: Filtration
Keywords: Carbon Diversion, Primary Filtration, Cloth Depth Filtration, Advanced Primary Treatment, Energy Savings

Full Scale and Demonstration – Primary Filter Projects Show Great Promise

Onder Caliskaner1, George Tchobanoglous2, Terry Reid3, Brain Davis4, Zoe Wu1, Eassie Miller1, Ryan Atterbury1, Catrina Paez1

1Kennedy/Jenks Consultants; 2Univeristy of California, Davis; 3Aqua-Aerobics Systems, Inc.; 4Linda County Water District;

Primary Filtration (PF) is an advanced primary treatment technology that can be used to replace primary clarification at wastewater treatment plants (WWTPs). Based on several pilot and demonstration projects, PF has been established as a treatment method to achieve significant capital and energy savings at WWTPs. PF was found to increase the primary treatment removal efficiency by an additional 50% over conventional primary clarification. Primary filtration achieves an overall 40 to 60% carbon reduction, depending on the influent characteristics. Resultant advantages of the PF process are:

1. Decreased aeration power consumption (approximately 25%) required for secondary treatment,

2. Increased energy production up to 30% in the anaerobic digestion process resulting from the high organic energy content of the volatile suspended solids removed by the filter,

3. Expanded plant capacity of about 30% by reducing the organic loading upstream of the secondary process,

4. Reduction of footprint required for primary treatment of approximately 75%, and

Pilot testing of PF for sidestream and primary filtration began in August 2016 and was completed in June 2017 at City and County of Honolulu Sand Island WWTP. Another 1-year PF demonstration testing using cloth depth filter was completed in December 2017 for Los Angeles County Sanitation District at the Lancaster WWTP. Following numerous pilot and demonstration PF projects, construction of the first full-scale PF installation was completed in June 2017 at Linda County Water District (Linda) WWTP (Olivehurst, California). The detailed evaluation of this first full-scale PF installation at Linda WWTP will provide significant information for wider implementation of this promising technology.

This presentation will provide an overview of the PF technology with its significance for the WWTP industry. Several case studies will be discussed in detail including the full-scale installation at Linda WWTP and demonstration and pilot projects at Lancaster and Sand Island WWTPs. Field performance data, operational issues, and projected cost savings will be presented.

Brief Biography and/or Qualifications
Dr. Onder Caliskaner has 22 years of consulting and research experience in providing project management, process engineering, planning, and design services to public agencies and private industries. He has a Ph.D. in Civil and Environmental Engineering from the University of California, Davis, M.S. from the University of Illinois at Urbana-Champaign, and B.S. from the METU Technical University in Turkey. He is a principal at Kennedy/Jenks Consultants serving as a national technologist specialized in wastewater filtration and energy efficiency processes. Dr. Caliskaner has managed significant wastewater filtration demonstration and assessment projects including the approval of cloth depth and compressible medium filters by the California Department of Public Health (CDPH) for unrestricted reuse applications and demonstration of primary effluent filtration technology funded by the California Energy Commission (CEC). Currently, he is serving as the principal investigator and project manager of the CEC-funded primary filtration technology development and demonstration project. Onder is a registered Civil Engineer in California.

2:00pm - 2:45pm
ID: 174 / Session 04A part 2: 2
Main Technical Program
Topics: Filtration
Keywords: Filtration, Clarification, Wet Weather, CSO/SSO, Primary Treatment, Energy Savings, Cloth Media Filtration, Tertiary

Rushville, IN – First Cloth Media Filtration Case Study for Combined Tertiary Treatment and Wet Weather Flows

John Dyson1, Steve Gress2

1Aqua Aerobic Systems, Inc., United States of America; 2Donohue & Associates, Inc.;

After extensive use in tertiary applications for over two decades, cloth media filtration has now been adapted for wet weather treatment. Rushville, IN is the first full-scale CSO cloth media filtration system to be operational and started in July 2017. This new solution has emerged as a promising technology due to its many advantages compared to existing solutions. This wet weather/stormwater filtration technology offers a small footprint and is capable of treating extremely high solids while providing high quality effluent without the use of chemicals. This cloth media filter can be utilized in many wet weather/stormwater applications including sidestream CSO, SSO, or stormwater treatment and combination configurations. The combination configurations can be used in combination in tertiary filtration or primary treatment modes during dry weather conditions, but CSO/SSO sidestream treatment during wet weather events.

The presentation will cover the operational performance of the cloth media filtration technology during the first year of operation. Looking at the performance during dry weather conditions when the filter is operating in tertiary treatment mode for TSS and phosphorus removal. Then, the performance of the cloth media filtration system during wet weather event while treating both the secondary clarifier effluent flows and excess wet weather flows that are being blending around the secondary treatment process.

To validate this new wet weather filtration solution, many studies have been conducted on raw domestic wastewater and wet weather conditions. Pilot studies have been conducted at the Rock River Water Reclamation District (RRWRD) in Rockford, IL in 2014, Rushville, IN and other locations. The treatment scheme consists of fine screening and grit removal before the wet weather treatment system. These studies have documented the technology’s capabilities to achieve TSS and BOD5 removals of >80% and >45%, respectively. This high removal efficiency has been achieved without the use of chemicals.

This filtration technology is also a viable solution for primary treatment and tertiary filtration applications.

Brief Biography and/or Qualifications
John holds a B.S. degree in Chemistry from Longwood College. He has spent 28 years in the water/wastewater industry working with many treatment technologies including clarifiers, filters, headwork equipment, disinfection processes, biological processes, and membrane processes in both the water and wastewater segments of the industry. He has worked on many stormwater projects including the 232 MGD side-stream CSO treatment facility for Toledo, OH. In addition, John is involved in many industry organizations such as WEF, WWEMA and AWWA and participates on several committees within these organizations.
 
1:15pm - 2:45pmSession 05A part 2: Innovation with old technology
Session Chair: Angie Estey, Trane;
Boise Centre East 430 
 
1:15pm - 2:00pm
ID: 112 / Session 05A part 2: 1
Main Technical Program
Topics: Innovation
Keywords: Lagoon, nitrification, phosphorus, modelling, wastewater

Optimizing Lagoon Based Treatment Systems for Improved BOD, TSS and Nutrient Removal

Tom Birkeland

Lemna Environmental Technologies, United States of America;

Meeting tougher regulatory requirements for BOD, TSS and nutrient removal including ammonia, phosphorus and total nitrogen can be a daunting task for any community, especially those with aging lagoon systems. Add in a cold climate where treatment is adversely affected by winter temperatures and many lagoon facilities struggle to stay in compliance with current limits or plan for future requirements. This talk will demonstrate how advancements in lagoon technologies, design and operations are helping communities to effectively meet their current and future effluent requirements.

Using wastewater treatment process design modeling software, lagoon treatment designs can be optimized for performance and reliability, especially for nutrient removal. The latest innovations in lagoon treatment use a dynamic wastewater treatment process simulation model, to analyze performance of existing facilities and the expected performance of proposed facilities. The models can explore the impact of various changes in loadings and temperatures and verify process design and performance before project implementation. Models may be manipulated to reflect the size, configuration, loading, aeration and effluent requirements for current or future facilities and are especially useful in predicting and troubleshooting cold weather performance and nutrient removal. Models enable designers to consider the effects of non-steady state factors such as peak flows, constituent loading, and ambient air and water temperatures, improving upon traditional steady state wastewater treatment process design methodology.

This presentation will focus on an updated approach for aerated lagoon based wastewater treatment and include an introduction to lagoon technologies, a brief discussion of current design methods, and several case studies showcasing how lagoon systems have been successfully upgraded in order to meet stringent effluent requirements for BOD, TSS, ammonia and phosphorus removal.

Brief Biography and/or Qualifications
Tom Birkeland is the Director of Project Development for Lemna Environmental Technologies (LET). He previously held project management positions with North American Wetland Engineering, Jacques Whitford, Stantec and Natural System Utilities, where he was responsible for 35 sustainable, decentralized water and wastewater treatment projects throughout Minnesota. He holds Class C Water and Wastewater licensees and the projects he managed received over 20 awards from the Minnesota Pollution Control Agency for operational excellence and compliance. He is a graduate of the University of Wisconsin-Madison and resides in Minnesota.

2:00pm - 2:45pm
ID: 130 / Session 05A part 2: 2
Main Technical Program
Topics: Disinfection
Keywords: peracetic acid, disinfection

Acid Reign: Use of Peracetic Acid for Disinfection at the Snohomish, WA WWTP

Tom Giese1, Duane Leach2, Jeff Harmon3

1BHC Consultants, United States of America; 2City of Snohomish, WA; 3TMG Services; , ,

The City of Snohomish, Washington owns and operates a lagoon wastewater treatment plant rated for 2.8 million gallons per day that discharges into the Snohomish River. The City had been using chlorine gas to disinfect effluent and sulfur dioxide gas to dechlorinate the effluent prior to discharge. Although there are no projected capacity issues with the chlorine gas disinfection system, that system requires a number of improvements to replace old equipment and enhance safety. Furthermore, the City would prefer to avoid the safety concerns of handling and storing chlorine gas. For these reasons, the City had tested application of peracetic acid (PAA) as an alternative method of disinfection. The City conducted full-scale testing to confirm effectiveness and evaluate the economics and performance of PAA versus replacing the chlorine gas system with sodium hypochlorite and using sodium bisulfite for dechlorination. A representative of the City, City’s consultant, and the PAA vendor will discuss the process that the City went through to evaluate the application of PAA, select a vendor, conduct the testing, and obtain approval of this “new and developmental technology” from the Washington State Department of Ecology, including:

• A brief overview of the WWTP and the drivers for considering PAA.

• Ecology requirements for “new and developmental technology”.

• Overview of PAA disinfection.

• Initial sizing parameters and bench-scale testing.

• PAA vendor selection process.

• PAA system requirements and process contingencies.

• Testing and sampling protocol.

• PAA system performance and challenges.

• Overview of PAA testing results.

• Discussion of next steps for implementation.

Brief Biography and/or Qualifications
Tom Giese is a registered professional engineer with 23 years of consulting engineering experience working on wastewater treatment projects including wastewater treatment facility planning and design; wastewater process modeling; wastewater treatment pilot testing; and construction management for wastewater treatment system improvements. Mr. Giese received both his B.S. and M.S. degrees in Civil Engineering from Oregon State University.

Duane Leach is a Group II Wastewater Treatment Plant Operator and a Wastewater Collection Specialist II. He started with the City of Snohomish in 2007 as a collections maintenance worker and transferred to the WWTP in 2013 as their lead operator. He served his Country in the Marine Corps and has a degree in Landscape Design.

Jeff Harmon is a Territory Manager with TMG Services – a longtime manufacturer’s representative for equipment in the water and wastewater industries in the Northwest – as well as fabricator of custom panels and skids relating to chemical feed. Jeff has been with TMG Services for three years, seeking to provide innovative solutions to engineers and municipal accounts throughout Washington State.
 
1:15pm - 2:45pmSession 06A part 2: Stormwater
Session Chair: Cari Simson, Urban Systems Design;
Boise Centre West 120B 
 
1:15pm - 2:00pm
ID: 217 / Session 06A part 2: 1
Main Technical Program
Topics: Stormwater
Keywords: Membrane, CSO, Treatment, Wet Weather

Putting Membrane Technology to Work for CSO Treatment

Doug Berschauer1, John Phillips2, Marcos Lopez3, Mike Ollivant1, Mark Wilf3

1Parametrix, United States of America; 2King County; 3Tetra Tech; , ,

King County has been implementing a combined sewer overflow (CSO) control program for over three decades. The County’s CSO program includes the construction of facilities to treat CSOs prior to discharge. Over the years, the County has had periodic issues at various CSO treatment facilities with consistently meeting discharge requirements for fecal coliform, settleable solids and chlorine residual.

The County is facing challenges of siting large CSO facilities in the urban area and rising costs for constructing facilities, The County is investigating innovative solutions that are operator friendly, fit within tight space constraints in highly developed portions of the City of Seattle and consistently meet the current regulatory requirements. The County would also like to incorporate newer technologies that not only achieve today’s water quality standards but also will meet future regulatory challenges.

Recently, the County and project team identified a new methodology for treating CSO discharges: using a combination of ceramic (silicon carbide) membranes and chemical coagulant commercialized by OVIVO. As a physical chemical process, this system can react quickly, activating within one minute. The County requested that Tetra Tech and Parametrix oversee a “live flow” site test of the OVIVO system, to assess its potential for addressing CSO conditions in the Seattle area.

This presentation will share the following with attendees:

• Process operation and key components;

• CSO simulation approach;

• Testing protocol and procedures;

• Results documented by an independent testing lab;

• Additional information needed;

• Lessons learned over the multi-day testing period, and;

• Why the County is now moving forward with a larger scale pilot program.

Brief Biography and/or Qualifications
John Phillips
King County, Department of Natural Resources and Parks, Wastewater Treatment Division, 201 S. Jackson St. KSC-NR-0512, Seattle, WA, 98104; PH (206) 477-5489; e-mail: john.phillips@kingcounty.gov
John has worked for the King County Wastewater Treatment Division for 17 years. He is currently the combined sewer overflow program manager. Over the last nine years he has worked on the Combined Sewer Overflow Control Program and is currently managing the program and implementation of the Long Term Control Plan. John has developed and is managing the Green Stormwater Infrastructure (GSI) and Climate Change Adaptation programs. His climate work has been referenced in both the IPCC and National Climate Assessment reports. He is Past President of the Pacific Northwest Clean Water Association (PNCWA). He serves on sustainability and climate action teams at King County. John has a Bachelor of Science Degree in Environmental Science from Oregon State University and served six years as a sonar man in the U.S. Navy on-board nuclear submarines.

Marcos Lopez
Tetra Tech, Inc., 1420 Fifth Avenue, Suite 600 Seattle, WA 98101, PH (206) 883-9439; e-mail: marcos.lopez@tetratech.com
Marcos has worked for Tetra Tech for 10 years. He a registered engineer with 33 years of experience in engineering and program management. His technical experience includes inflow/infiltration (I/I) control program management, civil site planning; water, sewer, and storm drain design; and project feasibility studies. Marcos is currently engaged in the SPU CSO Reduction Program Support project and serves as Project Manager for Tetra Tech’s ongoing projects for the Anchorage Water and Wastewater Utility. He serves on the Leadership and Communication Committees of the Pacific Northwest Clean Water Association (PNCWA), on the ACEC / King County Liaison Committee, and Chairs the ACEC / City of Seattle Liaison Committee.

Doug Berschauer
Parametrix, 1019 39th Avenue SE, Suite 10, Puyallup, WA 98374, PH (253) 905-4281; email: dberschauer@parametrix.com
Mr. Berschauer has 34 years of experience in wastewater facility planning and design. He is currently the Water Technology Leader for Parametrix. He specializes in public works projects and is experienced in planning, analysis, design, and construction management of wastewater conveyance and treatment projects. He has been responsible for all phases of implementation from feasibility studies through start-up assistance. His expertise includes evaluating innovative technologies and helping clients select the preferred alternative. He also has expertise in membrane technology and works closely with regulators to obtain approvals and assists with negotiations and startup.

2:00pm - 2:45pm
ID: 286 / Session 06A part 2: 2
Main Technical Program
Topics: Stormwater
Keywords: Green Infrastructure, Permeable Pavement, Monitoring

City of Spokane Sharp Avenue Porous Pavement Effectiveness Study

Marcia Davis1, Robin Kirschbaum2

1City of Spokane Integrated Capital Management; 2Robin Kirschbaum, Inc.; ,

The 2014-2019 Eastern Washington Phase II Municipal Stormwater Permit, Section S8.B, requires permittees to “collaborate with other permittees to select, propose, develop, and conduct Ecology-approved studies to assess, on a regional or sub-regional basis, the effectiveness of permit-required stormwater management program activities and best management practices (BMPs)”. Many Eastern Washington permittees worked collaboratively to meet this requirement by developing a ranked list of effectiveness studies.

The City of Spokane (City) proposed to implement the Sharp Avenue Porous Pavement Effectiveness Study to design, construct, monitor, and maintain a porous pavement system on an arterial street, Sharp Avenue, located in north Spokane. The City also proposed to collect data from the porous pavements with respect to durability, water quality (influent and effluent), and infiltration rates. Sharp Avenue is located in the Municipal Separated Storm Sewer System (MS4) basins that discharges to the Spokane River. The goals of the project are to:

• Gain a better understanding of stormwater runoff treatment capacity through the porous pavement profile

• Evaluate the effectiveness of the porous pavement systems with respect to durability, infiltration rates, and water quality

• Compare two different types of porous pavement: porous asphalt and pervious concrete

This presentation will discuss design, construction, monitoring, and lessons learned from past porous pavement installations in the City and from this on-going project.

Brief Biography and/or Qualifications
As the principal engineer of the City of Spokane’s Integrated Capital Management Department, Marcia is responsible for scoping, funding, and programming for capital projects. For the past 2 decades, she has designed and programmed water, sewer, stormwater, and transportation capital projects. Marcia has worked on the Sharp Avenue permeable pavement project from its inception: developing the scope, finding funding, and creating a matrix to measure the project’s success.

Robin Kirschbaum of RKI is a civil engineer specializing in stormwater management, Green Stormwater Infrastructure, and Low Impact Development. She brings over 20 years of experience in municipal stormwater facility planning, design, construction, and maintainenance; developing engineering standards and implementation tools to support NPDES compliance; and training professionals and municipal staff on stormwater program development and implementation.
 
1:15pm - 2:45pmSession 07A part 2: Solids
Session Chair: Benjamin Haws, J-U-B Engineers; bhaws@jub.combhaws@jub.com
Boise Centre East 410C 
 
1:15pm - 2:00pm
ID: 197 / Session 07A part 2: 1
Main Technical Program
Topics: Solids
Keywords: Thermal Hydrolysis, biosolids advanced treatment, digestion

Thermal Hydrolysis, how well do full scale systems really work?

Todd Williams

Jacobs, United States of America;

There is growing significant interest in the use of thermal hydrolysis technology in conjunction with anaerobic digestion to manage biosolids in the North America marketplace. This is being driven by the desire to obtain Class A exceptional quality biosolids, to improve the dewaterability of the biosolids and to reduce the amount of solids that subsequently must be managed while at the same time optimizing the use of existing digestion assets. Because of this interest, several thermal hydrolysis vendors are entering the marketplace. Cambi has developed the most operating facilities worldwide. In North America Cambi has one operating facility at DCWater since late 2014. The first North American chemical-thermal hydrolysis system offered by CNP - Pondus also began operation in Wisconsin in early 2016. Other vendors are aggressively working to enter the thermal hydrolysis marketplace in North America including Veolia with their Kruger Biothelys and Exelys offerings, Sustec/Turbotec, Haarslev and Lysotherm. Many claims are being made in vendor literature related to these technology offerings and only recently has more information about full scale performance been available.

The purpose of this paper and presentation is to provide an unbiased review of the various full scale thermal hydrolysis systems currently available in the marketplace and to provide comparisons of full scale performance of several operating systems as reported in the literature. 22 full scale thermal hydrolysis systems with published operational performance data have been reviewed and analyzed and will be presented to show comparisons of actual operating data. Correlations between feed solids type (primary vs. waste activated solids), volatile solids reduction achieved in digestion, dewatering performance, digester residence time, improvements in dewatering and volatile solids reduction performance after thermal hydrolysis was added as well as other relationships will be presented. This information will be useful for water resource recovery facility engineers, operators and owners when considering, planning and designing thermal hydrolysis technology with anaerobic digestion as part of a facility’s sludge management strategy.

Brief Biography and/or Qualifications
Mr. Williams has a 37-year career in environmental engineering with operating and design experience and specific emphasis in biosolids management planning, and product utilization. Todd has assisted many wastewater cities, agencies and communities throughout North America in developing sustainable biosolids management programs. He has direct experience with new and emerging biosolids treatment technologies such as digestion, drying, pyrolysis, gasification and composting. Todd is the past Chair of the Water Environment Federation’s Residuals and Biosolids Committee and currently serves as JACOBS/CH2M’s Residuals Resource Recovery Practice Leader.

2:00pm - 2:45pm
ID: 294 / Session 07A part 2: 2
Main Technical Program
Topics: Solids
Keywords: biogas, RNG, RINs, LCFS

Update on Biogas for RNG, Projects Around the Country

Jeremy Holland, Karen Bill

HDR, United States of America; ,

There is significant interest in reducing environmental impacts of wastewater treatment and recognizing the opportunities to reframe thinking of a wastewater treatment facility as a resource recovery facility. Water reuse and nutrient recovery have been focal points of this effort, but more recent opportunities have arisen that make anaerobic digestion and biogas use another attractive opportunity to improve the environmental footprint of wastewater facilities and increase the resources recovered from our municipal waste stream. Biogas provides an opportunity to generate renewable heat, electricity, transportation fuel, and even bioplastics. These opportunities can reduce the environmental cost of heat, power, or fuel from fossil fuel sources. And incentives are now available that will also provide significant revenue sources for communities to reduce operating costs and assist in capital projects. In addition to these onsite opportunities, many communities are recognizing the unsustainability of landfilling organics, and seeking ways to divert those organics. Wastewater facilities with existing digesters may have capacity to receive and process these organics, resulting in lower fugitive emissions at landfills and increased renewable fuels generated at the treatment plants. Fats, oils, and greases are also a maintenance challenge for collection systems. Grease trap programs that direct those wastes to treatment plants provide the benefit of reduced impacts due to overflows caused by blockage along with added organic feedstock to digesters for enhanced biogas production. This presentation will discuss the opportunities and challenges of implementing organics recovery and co-digestion to increase biogas production, along with the opportunities for use of the biogas to reduce energy consumption, greenhouse gas emissions, and transportation fuel usage. Some case studies of facilities that have implemented programs will be described and presented as well. The presentation will highlight the current status of renewable attribute programs such as the Renewable Fuel Standard and Low Carbon Fuel Standard, and any new programs that have been implemented. It will identify up and coming equipment for treating and/ using biogas.

Brief Biography and/or Qualifications
As Vice President/Biogas Practice Lead at HDR, Jeremy has spent a significant portion of his 20 year career on waste to energy projects. His focus has included numerous biogas use feasibility studies, procurements, and predesign, detailed design, bidding, and construction services for biogas distribution and conditioning facilities, cogeneration facilities, biogas upgrading facilities, hydronic and heat recovery systems, and standby power facilities. Jeremy is a regular communicator of biogas opportunities through articles, presentations, and white papers. He has Chemical Engineering and English undergraduate degrees from the University of Notre Dame, and an MBA from Portland State University.

Karen BIll has worked on several biogas projects during her career, including the City of Portland, Clean Water Service and Gresham Biogas projects. Karen's work includes early work managing data and performing analysis from the biogas feasibility studies and master planning to detailed design and construction management. In addition to her work on biogas, Karen has significant experience in wastewater treatment process design. Karen has a Civil Engineering degree from VMI and a Masters in Environmental Engineering from Virginia Tech.
 
1:15pm - 2:45pmSession 08A part 2: Secondary Treatment
Session Chair: Mark Walter, Waterdude Solutions, LLC;
Boise Centre West 110A/110B 
 
1:15pm - 2:00pm
ID: 173 / Session 08A part 2: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Phosphorus, nutrient, limits, filtration, case

Beat Ultra-Low Phosphorus Targets with Reactive Filtration: How Citronelle, Alabama consistently hits 0.02 mg/L

CJ Strain

Nexom, United States of America;

As Phosphorus-fed algae blooms plague many North American bodies of water, regulators are pressuring wastewater treatment facilities to meet ever-lower Phosphorus limits, down to micrograms per liter. Phosphorus levels can vary significantly from region to region, but many states across the USA are seeing limits below 0.1 mg/L, with some introducing limits between 0.01 and 0.07 mg/L. In 2015, Citronelle, Alabama's 1 MGD plant was facing one of the lowest—if not the lowest—NPDES permits in the nation: 0.022 mg/L.

This presentation delivers an overview of available techniques for phosphorus removal and how installations currently meet end-user limits. The goal in each application should always be to provide the most reliable treatment system while minimizing the technology’s capital and life-cycle costs; as such, the focus technique in this presentation utilizes reactive filtration. Rather than dosing system influent and allowing coagulated particles to randomly be caught up in the filter, reactive filtration coats the filter media with the substrate needed to adsorb contaminants and nutrients, helping ensure phosphates don’t pass through the filter while improving headloss profile through the system. The process’ continuous backwash then serves to recycle unused reagent and assist in regenerating the adsorptive, reagent-coated media.

Case history, design considerations, and lessons-learned will include data sets up to and including its first full season of compliance to <0.067 mg/L TP at Grangeville, Idaho, as well as Citronelle, Alabama’s chosen solution: a continuous-backwash upflow sand filter-based reactive filtration installation (known by the Blue PRO trademark) which is producing <20 μg/L TP effluent. As an added bonus, for those looking for a complete nutrient removal solution, the presentation will also briefly show how the sand filter-based process is compatible with the Blue NITE process, which uses a similar filtration design to achieve Total Nitrogen reduction down to 3 to 5 mg/L through denitrification.

Brief Biography and/or Qualifications
CJ (Cornelius) Strain, P.E., is Nexom’s Product Manager, Filtration. He has two decades of professional experience with over twelve years in wastewater process improvement. Mr. Strain has specialized in filtration technologies and nutrient removal applications emphasizing process design optimization, increasing levels of treatment, process sustainability and improvement of conventional treatment economics. He utilizes an applied foundation in the sciences paired with construction experience to provide effective and reliable solutions to today’s treatment challenges.

2:00pm - 2:45pm
ID: 242 / Session 08A part 2: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Phosphorus Removal, Pilot Tests, Chemical Addition, Recycled Water, Rare Earth

Achieving Ultra-Low Level Phosphorus at the Star, ID Wastewater Facility

Eric Roundy

Keller Associates, United States of America;

Low-level phosphorus effluent requirements are becoming a reality for many communities in Idaho. Star Sewer & Water District’s (SSWD) effluent discharge permit will soon require a seasonal monthly total phosphorus limit of 0.07 mg/L (as P). In addition to phosphorus removal, SSWD also received a more stringent ammonia limit, and is expected to receive a temperature limit in the future.

In preparation for these stringent limits, SSWD has studied and investigated a number of alternatives. SSWD owns and operates a membrane bioreactor (MBR), which provides a high quality effluent; however, they were concerned about chemical phosphorus removal negatively impacting their biological treatment. SSWD’s goal was to meet the new discharge limits while still producing effluent capable of meeting Class A recycled water requirements.

Recently, bench and pilot tests have been performed on the preferred technologies. This presentation will focus on the results of the pilot tests, which included chemical phosphorus removal using a rare earth solution. Other more commonly used chemicals, such as aluminum sulfate, were also tested. A description and comparison of the removal chemistry will be provided. The effect of the chemicals on nutrient removal will also be discussed.

The results of the pilot tests indicated that:

• The low-level phosphorus limit could be achieved with either aluminum sulfate or rare earth

• Ammonia and total nitrogen reduction can still be achieved while using chemical phosphorus removal

• Sludge production and dewaterability can be important factors in technology selection

• Pilot testing low-level phosphorus at the plant can provide significant savings

Brief Biography and/or Qualifications
Eric Roundy, P.E., BCEE, Project Engineer for Keller Associates, Inc.

Eric has 15 years of experience in the design and evaluation of wastewater treatment systems. He has a Master's in Environmental Engineering from the University of Illinois at Urbana-Champaign, a Bachelor’s in Civil Engineering from the University of Nebraska – Lincoln, and a Master’s in Business Administration from Mississippi State University. He is a licensed professional engineer in various states, including Idaho and Oregon.
 
1:15pm - 5:15pmTour: CITY OF MERIDIAN WASTEWATER TREATMENT PLANT
Session Chair: Royce Davis, City of Boise;
Tours Departure E Entrance of Boise Centre on Front Street. 
 
ID: 313 / [Single Presentation of ID 313]: 1
Facility Tours
Topics: Wastewater Treatment Processes

Tour: CITY OF MERIDIAN WASTEWATER TREATMENT PLANT

Royce Davis

City of Boise, United States of America;

Departs Boise Centre at 13:15 | Returns at 15:15 | Approx. Total Time: 2hrs | Estimated Transit Time: 25 mins each way - -The City of Meridian’s wastewater treatment system services a population of over 99,000 with a collections system of more than 400 miles of sewer pipe including 9 lift stations. - The City’s Wastewater Division has 6 operational sections including administration, pretreatment, maintenance, operations, collections, and laboratory. - The City of Meridian’s Wastewater Resource Recovery Facility is designed for Enhanced Biological Nutrient Removal with tertiary treatment. The system is capable of year round biological nutrient removal (BNR) operation for both nitrogen (N) and phosphorus (P). - The facility is rated to treat 10.2 million gallons per day (mgd) and approximately 15 mgd peak flows, respectively. The facility’s average monthly flow in 2017 was 7.4 mgd. - 2017 Performance Data: - • Ammonia Nitrogen, Max Day, 9.72 mg/L - • Total Phosphorus, Annual Avg, 0.72 mg/L - • Total Nitrogen, Seasonal Avg, 14.04 mg/l - 2027 Final Permit Limits: - • Ammonia Nitrogen, Max Month 0.308 mg/L - • Total Phosphorus , Max Month, 0 .1 mg/L - • Total Nitrogen, Seasonal Avg, 15.5 mg/L - The facility produces up to one million gallons of Class A reclaimed water per day. The City’s reuse system services approximately 44 acres of turf and landscape with the City. - The facility discharges to Five Mile Creek which ultimately connects with the Boise River. - The City of Meridian continues to be rated as one of the nation’s fastest growing cities. Growth coupled with increasingly stringent NPDES regulations are major contributing forces driving plant expansion. - The Meridian WRRF is currently undergoing extensive construction projects adding the first phase of treatment projects to meet interim NPDES permit limits at 15 mgd. - The second phase of treatment upgrades will add additional aeration capacity, chemical addition, and advanced filtration to meet the final NPDES permit limits.
 
2:00pm - 3:00pmGovernment Affairs Committee Meeting
Boise Centre West 140 
2:30pm - 3:30pmResiduals and Biosolids Committee Meeting
Boise Centre West 110C 
3:00pm - 4:00pmOpen Forum with WEF Legislative Director Steve Dye
Boise Centre West 140 
3:00pm - 4:30pmSession 01B: Leadership
Session Chair: Lara Kammereck, Carollo Engineers;
Boise Centre East 420B 
 
3:00pm - 3:20pm
ID: 208 / Session 01B: 1
Main Technical Program
Topics: Leadership
Keywords: Mentorship, Leadership, Job Satisfaction, Retention, Human Capital

How to Grow your Career through Mentoring

Alena Thurman, Lara Kammereck

Carollo Engineers, United States of America; ,

Many believe that the key to career success is a combination of ambition, ability, and opportunity. While these factors are important, research shows that one of the biggest factors in career success and leadership development is actually mentorship. What’s more, it’s not just being mentored that shapes one’s career – mentoring others is equally, if not more, important for one’s career. This presentation discusses this research and highlights a successful mentorship between two female engineers.

It’s no stretch to believe that being mentored positively affects one’s career. Employees who are mentored experience faster growth in their career and greater career satisfaction. However, giving one’s time to mentor others is equally important. In a study of over 160 engineers, the most productive employees were those who consistently gave more to their colleagues than they received. In another study of those in sales, the top performers who averaged 50 percent more revenue than other employees were “givers”. Since giving is an intrinsic part of mentorship, this research holds true for mentors as well.

Over the past seven years at Carollo Engineers, Inc. the relationship between Lara Kammereck and Alena Thurman is proof that giving and receiving mentorship works. In fact they have found that mentorship is most successful when the parties are both receiving and giving mentorship. They share their different experiences and perspectives on work projects, office dynamics and personal life, exchanging the roles of “mentor” and “mentee” depending on the scenario.

To find opportunities for mentorship, either as the mentor or mentee, we recommend joining PNCWA's mentoring program, which matches mentors with mentees each January. With this program, and many others, anyone can reap the benefits of this important work relationship.

Brief Biography and/or Qualifications
Alena Thurman is in her 7th year as a consultant with Carollo Engineers, Inc. In this role she has worked with dozens of water and sewer utilities throughout the Pacific Northwest on planning, design, and O&M documentation of their water and wastewater infrastructure.

Lara Kammereck is a project manager and Vice President, for Carollo Engineers, Inc. In her 25 years of experience she has worked for private and public agencies in the water/wastewater industry. She enjoys being an engineer while balancing her role as a mom, wife and mentor.

3:20pm - 3:40pm
ID: 293 / Session 01B: 2
Main Technical Program
Topics: Leadership
Keywords: diversity, war for talent, strategic plan

Making the Case for Diversity - Is It Part of Your Strategic Plan?

Ann Hajnosz

Harris & Associates, United States of America;

The water utility industry has grown increasingly complex and challenging, making it a great time to be in this industry! But there is a catch to this rosy outlook – we are in a war for talent. Demographics point to increasing retirements from the field and an acute shortage of professionals entering the field. Furthermore, water professionals need to be equipped with skills and knowledge that many us who have been in this industry for decades may not have valued or even thought much about. Attributes such as “team player”, “emotional intelligence”, “connecting the dots”, “stakeholder engagement” and other so-called soft skills are rising to prominence in an industry that is finding its footing in a world that is suddenly “curious” about everything water-related or more appropriately, “One Water-Related”. The ability to engage, connect and resonate with an increasingly diverse customer base and associated stakeholders is one of the biggest challenges of our industry. Without stakeholder support, the best technical solutions will be difficult to implement; difficult to fund and could possibly jeopardize our goals of ensuring public health and safety and being stewards to our natural resources. We need water utility staff who understand these challenges and embrace the idea of finding solutions amidst an array of diverse ideas.

If attracting and retaining the right staff to address these industry challenges is not part of your organization’s Strategic Planning process – it should be! Specifically, how will we as an industry respond to the war for talent?

This presentation will:

• Report on current findings around the idea that successful organizations are positioning themselves to attract and retain increasingly diverse employees

• Define diversity in the eyes of successful organizations – it’s not just what you look like!

• Define success for these organizations – is it really just about the bottom line?

• Suggest ways for those of us in the water utility industry to win the war on talent

• Recommend specific steps to incorporate diversity into your Strategic Plan

Brief Biography and/or Qualifications
Ann Hajnosz has worked with water, wastewater, electric, and solid waste utilities for 32 years in the areas of financial planning, rates, best practices, and general utility planning and operations. Her collaborative leadership style is grounded in her diverse engineering and financial background. Recently Ann was part of the Seattle Leadership Tomorrow Class of 2016 – a one-year deep dive into understanding the building blocks of a just and equitable community in Seattle.

3:40pm - 4:25pm
ID: 307 / Session 01B: 3
Main Technical Program
Topics: Leadership
Keywords: Diversity, investment, return

Panel Discussion: Return on your Diversity Investment

Lara Kammereck1, Nicki Pozos2, Ben Marre3, Rob Lee4, Holli Woodings5, Catherine Chertudi6, Corinne DeLeon3

1Carollo Engineers, United States of America; 2Barney and Worth; 3Seattle Public Utilities; 4Murraysmith; 5Boise city Council; 6City of Boise; , , , , ,

A diverse panel of active, local leaders with over 100 years of combined experience in water issues will share insight and experience from their careers. The panel will discuss the leadership successes and challenges they have faced in their career. They will also discuss the advantages of a diverse workforce in our industry. Finally, the panel will answer questions on how leadership can influence diversity and how culture helps create opportunities for workplace diversity.

Brief Biography and/or Qualifications
Lara Kammereck is a Vice President at Carollo Engineers, Inc. She has over two decade of civil engineering experience focused on water and wastewater master planning for public utilities. She received her B.S. in Civil Engineering from Gonzaga University and her MBA from Seattle University.

Nicki Pozos, PhD, PE brings 18 years of experience developing infrastructure projects in the Pacific Northwest. Nicki has a diverse background, encompassing a PhD in Civil Engineering and current work leading Strategic Communications projects with Barney & Worth. She aspires to be the world’s first engineering psychologist, bringing engineering thinking to understanding what makes people tick!


Catherine Chertudi has worked for the city of Boise Public Works Environmental Division for nearly 28 years and oversees a broad range of environmental issues including trash, recycling, composting, ground water remediation and protection, and hazardous materials management. In 2013, Catherine was the local chairperson for the Stockholm Junior Water Prize competition held in Portland, Oregon and she has been a long time member of the PNCWA Communications and Outreach Committee. Catherine was selected as a 2016 Idaho Business Review. Idaho Women of Year award winner. In her spare time, she loves photography, hiking and gardening!

Ben Marré has worked for Seattle Public Utilities for 11 years. He oversees SPU’s stormwater and wastewater $150M/yr capital program, system planning, policy and regulatory team, and Combined Sewer Overflow Consent Decree compliance. Before Seattle Public Utilities, he worked for Black and Veatch as a design engineer and project manager. Ben is a graduate of Seattle University and most recent continuing education includes extended studies at Harvard Law School, where he studied – Negotiation and Leadership / Dealing with Difficult People and Problems.

Rob Lee is a Principal Engineer with Murraysmith. He is a graduate of Cornell University with both a Bachelor’s and a Master’s degree in Environmental Engineering. As a child of immigrants and having grown up in the Pacific Northwest, Rob has a very personal passion for seeing increased diversity in our region and within our industry. Rob is currently leading his firm’s Diversity initiative, focused on raising awareness of the needs and benefits of diversity and inclusion both internally and externally.

Holli Woodings was elected to the Boise City Council in November of 2017 and began her term in January 2018. Holli believes that Boise is a great place to raise a family, start or grow a business, and inspire the next generation of young leaders. Keeping our community strong and sustainable is what drives her to give back through public service. A graduate of Boise State University, she served as a State Representative for District 19 in Idaho’s 72nd Legislature. Prior to that, she helped develop and finance Idaho’s largest wind energy farm, founded Woodings Group, a consultancy specializing in startup energy companies and co-founded the Idaho Clean Energy Association. In 2013, Holli was honored as one of Idaho Business Review’s Women of the Year. Holli’s other community service includes serving as Board Chair for Girl Scouts of Silver Sage, a board member of the Boise State Foundation, and on the board of advisors for Idaho Women in Leadership. Her past volunteer service has included a term as president of the North End Neighborhood Association, where she helped craft “Blueprint Boise” and the urban agriculture ordinance as the neighborhood association representative. She has also volunteered for many local organizations including Boise State Venture College, NEW Leadership Idaho, and the 2012 Yes! For Boise Schools campaign.
 
3:00pm - 5:15pmSession 02B: Asset Management
Session Chair: Jesse Hartman, City of Boise;
Boise Centre East 410A 
 
3:00pm - 3:45pm
ID: 257 / Session 02B: 1
Main Technical Program
Topics: Asset Management
Keywords: asset management, condition assessment, risk

Risk-Based Asset Management Communication Tool

Michael Comeskey1, Neil Jenkins2

1City of Boise Public Works; 2Jacobs; ,

The operators and mechanics know that an asset is broken and will stop working for the last time any day now. Duct tape and baling wire have extended its life and the engineering department has had it on the list to replace for years. Now, with stiff competition throughout the utility for limited resources, how do we get decision-makers to prioritize replacement funding?

The City of Boise has instituted an asset management approach to help close the gap between what operators and mechanics live with, what engineering staff knows about and would like to solve, and what makes it high enough on the decision makers list of priorities to fund. Based on the best practices in the International Infrastructure Management Manual and the ISO-55000 standard, the refreshed strategy relies on inputs like condition assessment to break down communication barriers by creating a common language based on risk. The project was multi-disciplinary within the utility, involving staff from operations, engineering, maintenance, and finance. Starting with a desktop review of all assets to determine how critical each asset is to the overall utility goals and objectives, participants then walked through the facility to validate the workplan in the field. Recognizing the importance of consistent and repeatable assessments, the team then brought in technical experts from outside the organization to train utility staff and perform quantitative condition assessments. The information gathered was processed and reviewed before communicating the results throughout the organization. The risk prioritization process allows team members at all levels to understand where the limited resources should be used and aligned the plan and priorities across the workgroups. As a result, capital spending was targeted to maximize risk reduction across the utility.

Brief Biography and/or Qualifications
Michael Comeskey

Michael Comeskey is the Capital Improvement Program Manager for the City of Boise Public Works Department. He is leading the capital improvement, facilities planning, and strategic asset management programs for the City’s Water Renewal Services utility. His experience includes utility management, asset management, business operations, and leading innovation in utilities.

Neil Jenkins

Mr. Jenkins is a water and wastewater engineer with Jacobs Buildings and Infrastructure business in Boise, Idaho. He has a diverse background and experience supporting water and wastewater facility planning efforts, stormwater management plans, capital improvement plans, condition assessment, facility design, and construction management. His experience spans all phases of the design process from field data collection and initial investigations, to concept development and final design, to construction management and startup services.

3:45pm - 4:30pm
ID: 109 / Session 02B: 2
Main Technical Program
Topics: Asset Management
Keywords: SharePoint, Operations, Maintenance, Electronic, Manual

An Electronic Operator’s Manual On SharePoint - Wikipedia Style

Joel Borchers1,2, Prashant Sinha1, Brad Rumbaugh1, Matthew LaForce2,1

1Clean Water Services, United States of America; 2Clackamas Community College;

A cloud-based Electronic Operator’s Manual (EOM) was implemented in order to consolidate reference materials and bring new hires up to a level of competence in a limited amount of time.

Plant Documentation covers a wide array of materials; vendor O&M manuals, As-Built Drawings from past projects, equipment information, Control Descriptions, Standard Operating Procedures. In addition to these reference items, a narrative along with videos, pictures and drawings show how the various processes operate and what pieces of equipment are used to implement those processes. When new projects are underway in certain areas of the plant, resources are directed to that particular area of the plant to insure the information that is generated during the project is captured and that the information needed is created.

The EOM design in similar to Wikipedia in that users have the ability to add content to the EOM themselves. When new content is first entered into the EOM, the new content is available to only the person who created the new content along with a team of Subject Matter Experts. The Subject Matter Experts will review, and if needed modify, the new content prior to approval. Once approved, the new content is viewable to the general audience. The ability to add content to the EOM is designed to create a sense of ownership among the Operations staff.

The Electronic Operator’s Manual has also integrated an online learning platform based on a documented list of tasks, skills and information that an Operator needs to master in order to operate certain areas of the plant.

Even though the EOM contains some specific information on equipment, plans are underway to integrate the Computerized Maintenance Management System in the near future.

Brief Biography and/or Qualifications
Joel is the Senior Operations Analyst for the Wastewater Treatment Department of Clean Water Services where he is currently the designer, administrator and content developer of the past two versions of their Electronic Operations Manual.

Joel is an Oregon level 4 certified operator with over 30 years of experience in the design, construction, and operation of Wastewater Treatment Plants.

Joel has served on the Oregon DEQ Wastewater Certification Advisory Board, he served numerous years on the Oregon Water Education Foundation and was the chair of their annual Water Environment School held at Clackamas Community College. Joel is also an instructor at Clackamas Community College.

He is a Past-President and a Director of the Lower Columbia Section and is a past-chair of Pacific Northwest Clean Water Association's Plant Operations and Maintenance Committee.

4:30pm - 5:15pm
ID: 128 / Session 02B: 3
Main Technical Program
Topics: Asset Management
Keywords: SCADA, Cloud, Automation, Asset, Hosted

Cloud Hosted SCADA and Asset Management Automation

Rick Patton

Advanced Control Systems, LLC, United States of America;

Problem: Rural towns are finding it more and more difficult to support water and wastewater delivery systems, in part, due to the increasing trend for their youth to migrate to larger cities. With fewer recruits to fill operations positions, Cities have less tax revenue and less maintenance personnel forcing them to do more with less. Many small towns and privately owned operations are considering automation to enable fewer operators to manage and maintain their systems through remote monitoring, control and preventive maintenance. However, automation itself has traditionally required maintenance, so a solution must be found to reduce operational overhead without adding maintenance.

Solution: Cloud hosted solutions are the way of the future. Software as a Service (SAAS) is being adopted by nearly any company that has historically provided tactile software products. The customer will no longer “own”, but rather “pay to use”. The reasons for the providers to move to the cloud are many, but the value proposition for their customers is the same – unlimited scalability, high reliability, zero maintenance, zero obsolescence, remote support and unlimited access.

Conclusion: Cloud hosted solutions can be provided with a lower initial price when compared to traditional and, over their lifespan, provide superior value and with lower overall cost of ownership.

Brief Biography and/or Qualifications
Mr. Patton joined ACS in 2010 as Director of Marketing and Sales. Mr. Patton is the face of the company to the industries and communities served by ACS. He enjoys helping clients and working with them to achieve mutual success. In this role he also works to recognize and identify evolving client needs while then helping to formulate offerings that leverage the unique system controls capability that ACS brings. Mr. Patton has a proven track record of success and is known for adding value by partnering with communities and industry associations and being actively involved for their betterment. Mr. Patton has enjoyed 28 successful years in the technical marketing and sales profession and is a BSEE graduate of the University of Idaho.
 
3:00pm - 5:15pmSession 03B: Public Outreach
Session Chair: Hunter Bennett-Daggett, Tetra Tech;
Boise Centre West 120A 
 
3:00pm - 3:45pm
ID: 227 / Session 03B: 1
Main Technical Program
Topics: Outreach/Communications
Keywords: innovation, community engagement, partnerships, stormwater

Thinking Past the Pipe: Innovation and Community Engagement on the Georgetown Wet Weather Treatment Station

Kristine Cramer1, Cari Simson2, Bibiana Ocheke-Ameh1

1King County Wastewater Treatment Division; 2Urban Systems Design; ,

Sited in the industrial-residential heart of Seattle’s Georgetown neighborhood, King County’s Georgetown Wet Weather Treatment Station (GWWTS) is a combined sewer overflow control facility designed to protect the Duwamish River from future stormwater and wastewater pollution. The Wastewater Treatment Division (WTD) saw the facility siting, design, and construction as an opportunity to build strong relationships with a historically underserved population in a growing neighborhood, on the banks of a Superfund site. The project reimagined community engagement for a new era in which Equity and Social Justice is a top priority, the idea of “neighborhood” extends beyond the project site, and a project incorporates community initiatives into its plans.

WTD achieved these community engagement goals by:

• Bringing business leaders and residents together in a community Design Advisory Committee to guide the site’s architecture and landscaping.

• Implementing a robust Equity and Social Justice Action Plan to ensure the County fully considered the area’s equity opportunities.

• Leveraging community-driven initiatives to help further protect water quality, including:

o Partnering with Urban Systems Design (USD) to install cisterns and rain gardens at a popular neighborhood grocery.

o Working with the City of Seattle, USD and Seattle Parks Foundation to seek grant funding to revive a long-desired neighborhood project connecting the community to Georgetown’s only riverfront park.

o Funding a community-initiated Green Wall along a traffic arterial to improve air and water quality.

o Joining forces with a small non-profit and local elementary school to improve educational opportunities and create art beautifying the project site.

• Prioritizing local hires in the construction contract.

Achieving big results requires big effort. Together, a committed outreach team, a supportive project manager, and an engaged community created a project that will improve water quality beyond the bounds of the treatment station. The GWWTS approach is a model for all large infrastructure projects seeking to leverage capital investments to build better infrastructure and enduring positive relationships with stakeholders and ratepayers.

Brief Biography and/or Qualifications
Since 2005, when Kristine Cramer received her MS in Social Science from the Forestry Department at the University of Washington, she has worked with people of all ages to educate and engage them on environmental topics. As a consultant for King County, Kristine developed and implemented hazardous waste, waste reduction and recycling education programs for students and adults around the region. Kristine joined King County Wastewater Treatment Division (WTD) in 2011. Since then, she has led community outreach on a range of high-profile capital improvement projects. From WTD’s first large-scale green infrastructure project to pump station and pipe upgrades to a new wet weather treatment facility, Kristine aims to engage and inform a broad range of community stakeholders. Her work has been featured at regional and national conferences and has won awards for outstanding public engagement.

Urban Systems Design LLC was founded by Cari Simson in 2009 and provides professional consulting services to clients through integrating collaborative, whole systems approaches to improve urban livability and resilience. The firm specializes in delivering expert leadership to projects that exemplify effective public-private partnerships, interagency coordination, and community engagement to transform the built environment. The firm’s work is dedicated to promoting service equity and broad participation to develop creative, resilient solutions to urban green infrastructure challenges.

3:45pm - 4:30pm
ID: 249 / Session 03B: 2
Main Technical Program
Topics: Outreach/Communications
Keywords: outreach, education, communication

Engaging the Public with Water Renewal

Colin Hickman, Cindy Busche

City of Boise; ,

In 2016, the City of Boise embarked on the mission of rebranding the wastewater treatment facilities. The City recognized that the public did not have an understanding of the work we do and that our previous model of citizen understanding and engagement needed to change. As we moved to a resource recovery focused operation, we needed to tell our story – or risk having someone tell it for us. Now, two years later, the City has developed a multi-pronged approach to generate community awareness to gain community understanding and support. At the foundation of the community engagement process was the rebranding to identify our organizational personality, defining purpose and positioning statements and ultimately determining a new name for the utility. Then a series of public communication campaigns and direct citizen outreach strategies were implemented. In addition, changes to the programming and exhibits at the Boise WaterShed Education Center, which traditionally reached youth, expanded its offerings to target adults in our community. We are excited to share these outreach and education strategies with you to take home ideas to implement in your community.

Brief Biography and/or Qualifications
Colin Hickman is the Public Works Communication Manager for the City of Boise.
He is responsible for overall department communications, messaging and marketing. Colin manages projects from the overall content strategy, creative process and public relations for major citywide initiatives. He serves as the primary media contact and public information officer for the department.

Cindy Busche is the Environmental Education Manager at the Boise WaterShed Education Center where she develops and teaches programs about water protection and water conservation. In 2016 she became the SW Idaho Project WET Coordinator in which she develops and leads teacher professional development courses. Her employment with Boise City Public Works began more than ten years ago with the Stormwater program.

4:30pm - 5:15pm
ID: 269 / Session 03B: 3
Main Technical Program
Topics: Outreach/Communications
Keywords: utility management, facility planning, outreach, education, communication

Engaging the Community to Plan Boise’s Water Future

Colin Hickman1, Natalie Podgorski2, Matt Gregg3, Haley Falconer1

1City of Boise, United States of America; 2Atlas Strategic Communications; 3Brown and Caldwell; ,

The City of Boise (city) is developing a long-term facility plan for its Water Renewal Services. Traditionally, facility plans have engaged stakeholders at the end of the planning process to endorse the proposed plan. Boise is aiming to do things differently. The city has sought to proactively engage and educate a diverse group of stakeholders throughout facility planning. The city has made ratepayer input a crucial element of the planning process to ensure decisions made today reflect the priorities of the community for the next several decades.

The city has employed various stakeholder engagement tactics that provide for both breadth and depth of feedback. To gather feedback and rich dialogue on water and energy concepts, the city started by holding a series of ratepayer focus groups. These meetings allowed the city to gain insight into the baseline knowledge of ratepayers and gauge reactions of future opportunities. The city also held a meeting with key stakeholders, including business leaders, environmental groups, associations serving some of Boise’s most vulnerable citizens, and neighborhood associations, to educate them on future opportunities and solicit feedback. Finally, the city developed an online survey and hosted two community workshops along with a Facebook Live town hall to gain broader feedback from even more residents. Throughout these efforts the city received praise for involving the community and an appreciation from the outreach participants in having a role shaping the city’s plan.

This process can serve as a roadmap for other utilities looking to more effectively engage with community stakeholders. This presentation will highlight why Boise placed such an important emphasis on community feedback, how the communication strategy was developed to align with the planning outcomes, and the tactics utilized to engage with ratepayers.

Brief Biography and/or Qualifications
Haley is the Environmental Division Manager for the City of Boise. In this role, she is responsible for the City of Boise’s environmental programs, including water quality and permitting, wastewater planning and capital improvement program, trash, recycling and composting, energy, air quality, and sustainability. Over the past two years, she has led the City’s Water Renewal Facility Plan – a 20-year planning document for our water renewal (wastewater) facilities. This process includes a focus on resource management and recovery, community input, regulatory changes, and economic development.
 
3:00pm - 5:15pmSession 04B: Clarifiers and Filtration
Session Chair: Anthony Tartaglione, Black and Veatch;
Boise Centre East 410B 
 
3:00pm - 3:45pm
ID: 212 / Session 04B: 1
Main Technical Program
Topics: Filtration
Keywords: EBPR, Phoshporus Reduction, Pilot Study, TMDL

City of Post Falls, Idaho – Membrane Tertiary Treatment Pilot Study for Low-Phosphorus and Reuse

Michael Conn1, Mark Esvelt2, Ben Carleton2, Monica Ott3, John Beacham3

1J-U-B Engineers, Inc, United States of America; 2Esvelt Environmental Engineering; 3City of Post Falls; , ,

The City of Post Falls, Idaho owns and operates a secondary treatment Water Reclamation Facility (WRF) utilizing enhanced biological phosphorus removal (EBPR) to treat municipal wastewater. Under an NPDES Permit, reclaimed water from the Post Falls WRF is discharged to the Spokane. New NPDES limits and a compliance schedule targeting a reduction of CBOD5 and total phosphorus (TP) are being driven by a TMDL for dissolved oxygen in the downstream receiving water. To meet loading caps of 255 lbs/day CBOD and 3.19 lbs/day TP, concentration limits will decrease as future flows increase to <6 mg/L CBOD5 and <50 ug/L TP, arguably some of the most stringent limits in the nation. The City has undertaken an 18-month pilot study to test three MF/UF pressurized membranes in a tertiary filtration application to determine the ability of the systems to meet the new effluent requirements (and for future Class A reuse). In addition to the membrane pilot study, three high-rate clarification (HRC) systems were tested for pre-treatment to the membranes, including solids-contact clarification, dissolved air flotation, and plate settlers. During planning for the pilot study, pressure membranes (downstream of the HRC’s) were evaluated for the application, specifically targeting systems’ capable of handling heavy chemical doses. Further, research of full-scale facilities identified very few systems operating with EBPR followed by tertiary membranes targeting ultra-low TP. This lack of industry knowledge led the City to undertake a robust pilot protocol to enhance their knowledge of their potential full-scale tertiary system that they are targeting for full-scale. The paper will present the operational parameters tested including variable influent conditions, coagulant dosing, laboratory procedures and results for ultra-low TP. The conclusions of the study will be presented along with how the pilot study data was utilized to inform the membrane procurement, and design for the full-scale system.

Brief Biography and/or Qualifications
Mike Conn is a project manager with J-U-B Engineers in their Coeur d'Alene Idaho office with 15 years in the Water & Wastewater industry. Mike has an MS in Civil Engineering and is a PE in Idaho and Washington. Mike's career emphasis has been in membrane applications for drinking water, wastewater treatment, and reuse.

Mark Esvelt, BS, Mining Engineering, University of Idaho. MS, UC Berkeley, Civil Engineering, Water Quality Engineering Emphasis. 24 years Environmental Engineering Consulting. Partner in Esvelt Environmental Engineering. Professional Engineer in Washington, Idaho, and Oregon.

Ben Carleton. B.S. Chemical Engineering, University of Idaho. M.S. Chemical Engineering, University of Idaho. Environmental Engineer at Esvelt Environmental Engineering, emphasis in municipal and industrial wastewater. EIT license in ID and WA (P.E. in 2-4 years). One year work experience at Cd’A WWTP as pilot plant operator; Class I Operator license in ID (pending).

3:45pm - 4:30pm
ID: 241 / Session 04B: 2
Main Technical Program
Topics: Filtration
Keywords: MABR, Nutrient Removal, Energy Efficiency

Practical Considerations for the Full-Scale Application of a Membrane Aerated Biofilm Reactor (MABR)

Tom Johnson, William Leaf

Jacobs/CH2M, United States of America;

For any new technology, there is often a large leap that is required to move from pilot scale testing to full scale application. The development of new technologies has typically followed an “S-Curve” in the wastewater industry. As discussed in the recent Water Resources Utility of the Future Annual Report (2015), this acceleration of the S-Curve has led to the emergence of an Innovation Ecosystem. Within this ecosystem, technology developers, consulting engineers, utilities, and universities are collaborating to better define risks associated with innovative technology. This collaboration results in a deeper understanding of technology risks and benefits, and increased implementation of innovative technologies that provide clear resource reduction and recovery benefit for a utility. The membrane aerated biofilm reactor (MABR) technology development has actually had an extended bench scale and pilot scale period. Several manufacturers are now developing commercial scale MABR reactors. The challenge now is accurately identifying whole plant impacts of the MABR, and developing practical design standards for both the MABR and the ancillary components.

VCS Denmark manages the Ejby Molle facility in Odense, Denmark and recently completed a full-scale MABR demonstration project. The drivers for VCS with the incorporation of the MABR is to: 1) provide energy efficient total nitrogen (TN) removal, and 2) increase peak wet weather capacity. The whole plant impacts of incorporating the MABR in the full-scale pilot are documented. The optimal location for the MABR in the existing bioreactors is presented. A 40-percent net energy reduction was estimated in the activated sludge process. The average effluent TN was not impacted, but the overall annual TN discharge was reduced given the improved process stability. The peak wet weather capacity increased by 45 percent. A detailed process modeling (with Dynamita's SUMO) effort is also completed, with calibration and validation against the MABR performance.

Brief Biography and/or Qualifications
Tom Johnson is a Principal Technologist with Jacobs/CH2M, specializing in wastewater treatment projects (planning, design, and plant optimization). Tom helps lead the development of Jacobs/CH2M process models (Pro2D2 and Dynamita's SUMO).

4:30pm - 5:15pm
ID: 299 / Session 04B: 3
Main Technical Program
Topics: Filtration
Keywords: Resource Recovery, Reuse, Ion Exchange, Advanced Water Treatment

Beads to Brine to the Bank: Piloting Electrodialysis for Reuse of Concentrated Brine

Katerina Messologitis

Stantec Consulting, United States of America;

Anionic exchange resins are becoming more widely used in advanced industrial wastewater treatment and to target specific constituents for potable reuse. Anionic resins can be regenerated to 99.9% recovery with NaCl, but leave behind a saline waste stream, referred to as brine. This brine contains left-over NaCl, as well as desorbed inorganic and organic anions (SO42-, HCO3-, HS, etc.) from the feed water. Dealing with this brine has always been a problem when trying to do large-scale treatment; especially with increasingly strict regulations.

Fortunately, compounds in the brine can be reclaimed if properly separated: NaCl for direct reuse in the regeneration process; and HS as a bio-stimulant for crop growth. Previous investigations have highlighted the efficiency of using electrodialysis (ED) technology to achieve the separation of 1) NaCl with mono-selective membranes and 2) divalent ions from HS with non-selective membranes. However, little was known about the effect of high organic loads from the brine on operations causing fouling or spacer clogging.

The purpose of this presentation is to share pilot-scale findings, which evaluated the long-term feasibility of ED technology for treatment of an anion exchange brine, including NaCl and HS recovery. ED treatment with mono-selective membranes took place over a six-month period while recording operational data and quality of the by-products. Results demonstrate that ED treatment with mono- and non-selective membranes is an innovative process that can be effective at targeting the recovery of resources from concentrated waste streams.

Brief Biography and/or Qualifications
Katerina has a Masters degree in Civil Engineering from the University of New Hampshire. She conducted a pilot study on the feasibility of using electrodialysis for the recovery and reuse of concentrated brines from advanced water treatment.

Katerina currently works at Stantec primarily with a team of process engineers who operates a proof of concept pilot plant testing the efficacy of an industrial wastewater treatment and reclaim facility. Katerina applies and builds upon the skills learned during her thesis work to understand and synthesize the results from the current pilot project she is working on.
 
3:00pm - 5:15pmSession 05B: Innovation with old technology
Session Chair: Kevin Goss, Tetra Tech;
Boise Centre East 430 
 
3:00pm - 3:45pm
ID: 157 / Session 05B: 1
Main Technical Program
Topics: Innovation
Keywords: creative wastewater reuse

City of Prineville Crooked River Wetlands

Brett Moore

Anderson Perry & Associates, Inc., United States of America;

The City of Prineville’s Crooked River Wetlands Complex demonstrates a new approach to dealing with wastewater. Constructed for just $8 million, a fraction of the $62 million price tag of a previously recommended mechanical treatment plant, the complex utilizes natural processes found in the wetlands to further treat reclaimed water. Designed to operate entirely by gravity, the wetlands offer habitat to numerous plants, wildlife, waterfowl, and insects that support a healthy ecosystem. The nearly 5 miles of trails built throughout the complex also double as a biology and wildlife laboratory for area schools and a recreational get-away for visitors.

The wetlands in the complex were designed to augment the flow of water into the adjacent Crooked River. After the water is polished by the microorganisms growing on the plants in the wetland cells, the water is cooled as it flows underground into the Crooked River, providing as much as 2 million gallons per day of clean, cool water to aid in the reintroduction of steelhead and salmon.

As with most innovative ideas, this approach met with a fair amount of skepticism from regulatory agencies during the permitting process. Anderson Perry and the City conducted a number of studies to convince the agencies that this approach would not adversely affect area groundwater and the City agreed to meet extremely rigid monitoring requirements and increased water quality standards in order to secure permits.

Since beginning operations, the system is exceeding the stringent permit requirements and has helped pioneer a new permitting process and regulatory agency mindset for other communities and engineers who are interested in this non-traditional method for treating and disposing of wastewater. This project proves that treating wastewater can provide more to a community than smelly ponds or energy-consuming treatment plants, and can benefit the environment and provide recreational and educational experiences at the same time.

Brief Biography and/or Qualifications
Brett is a senior project engineer and member of the AP Board of Directors whose 23 years of experience includes the planning, design, and construction administration of private and public infrastructure projects, including wastewater collection, treatment, disposal, and reuse systems. Brett holds an M.S. in Water Resource Engineering and a B.S. in Civil Engineering from Brigham Young University. Brett has lived in eastern Oregon for the past 18 years and has designed wastewater improvements that were successfully implemented for many local communities.

3:45pm - 4:30pm
ID: 183 / Session 05B: 2
Main Technical Program
Topics: Innovation
Keywords: Natural treatment system, vertical-flow wetlands, intensified wetlands, nitrification, nitrogen removal

Low-Energy Nitrification in Intensified Vertical Flow Wetlands

Jamie L. Hughes, Kenneth J. Williamson, Leila Barker

Clean Water Services, United States of America; ,

Clean Water Services constructed a 95-acre Natural Treatment System (NTS) adjacent to the Forest Grove Wastewater Treatment Facility (WWTF) in Forest Grove, Oregon, in 2017. The wetlands complex provides additional treatment of the secondary-treated wastewater effluent from the Hillsboro and Forest Grove WWTFs. As part of the NTS, an intensified vertical flow wetlands (VFW) was installed after the WWTF to achieve nitrification; the VFW was chosen to achieve significantly lower energy and maintenance costs.

A pilot-scale system was operated to determine the media type and optimum design parameters for a full-scale VFW. Six-foot-deep columns were filled with rock media with a high ammonium exchange capacity to facilitate biofilm growth. Effluent from the Forest Grove WWTF was supplemented with ammonia-nitrogen to ~20 mg nitrogen/L and dosed onto the columns in 5-centimeter-depths at set intervals using siphons. Pilot testing results (presented at the 2014 PNCWA Conference) showed ammonia removal rates of 93 to 98 percent when operated under loading rates of 1 to 16 m/d under either of two operational flow conditions: vertical flow or flood-and-drain flow.

Based on the results of the pilot-scale testing, 12 VFW cells with a horizontal area of about 55,000 square feet were constructed at the NTS. The 6-foot-deep cells were filled with ¼-inch to ½-inch river rock with an ammonium exchange capacity of >40 mg/kg. The VFW was designed to treat up to 14 MGD.

Full-scale testing is underway and results will be presented. Data including examination of loading rates and operational flow conditions on removal efficiencies will be presented along with a description of the final full-scale design and construction process. The full-scale removal rates will be compared to the pilot-scale results.

Brief Biography and/or Qualifications
Jamie Hughes is a Water Resources Analyst in the Regulatory Affairs Department at Clean Water Services, a water resource management utility in Washington County, Oregon. Jamie led the operation of the vertical flow pilot plant and has given presentations on her research results at several conferences including at the 2014 PNCWA conference and at WEFTEC in 2015. Currently at CWS, Jamie assists in the implementation of the watershed-based NPDES permit and permit-related programs including the water quality credit trading program for temperature. Jamie also reviews and provides feedback on state and federal regulatory policies, studies, and rulemakings. Jamie is an active member of WEF, Oregon ACWA, and PNCWA and serves on several committees within those organizations. Prior to working at Clean Water Services, Jamie graduated from Oregon State University with a Master’s degree in Environmental Engineering and a minor in chemistry. She is excited to be back here presenting again at PNCWA!

Leila Barker is a Water Resources Analyst in the Regulatory Affairs Department at Clean Water Services in Hillsboro, Oregon. She coordinates implementation of the District’s research program and manages data collection and research projects related to permit compliance. Her work includes the design and implementation of monitoring programs aimed at optimizing treatment performance in the natural treatment system at Forest Grove. Leila holds an M.S. in Environmental Engineering from Oregon State University and a B.S. in biology from Emory University.

4:30pm - 5:15pm
ID: 137 / Session 05B: 3
Main Technical Program
Topics: Innovation
Keywords: treatment wetland, nutrient removal

Treatment Wetlands for Nutrient Removal at Small Facilities

Jack Wallis1, Otto Stein2

1Wallis Engineering; 2Montana State University;

As water quality regulations become stricter, small facilities face significant challenges to providing cost-effective wastewater treatment. Treatment wetland systems are becoming increasingly attractive due to their ability to provide a high quality effluent at a fraction of the cost of conventional wastewater treatment systems. The Montana State University Treatment Wetland Lab Group recently designed and constructed two vertical flow treatment wetland systems in Montana in response to new regulatory requirements. A pilot-scale system was constructed at the Bridger Bowl Ski Resort to demonstrate nitrogen removal in anticipation of a nitrogen TMDL, and a full-scale system was constructed at the Ennis National Fish Hatchery to meet the requirements of a new Concentrated Aquatic Animal Production General Permit.

Both systems receive high strength wastewater: the Bridger influent is high in ammonia nitrogen and chemical oxygen demand from kitchens and restrooms, and the Ennis system receives solids rich wastewater from raceway cleaning. Both systems are two stage vertical flow wetlands, with design features tailored to specific wastewater characteristics and treatment requirements. The Bridger system has been optimized for nitrogen removal over four operating seasons, and has shown consistently high COD removal (95%) and nitrogen removal (up to 75% depending upon operating conditions). The Ennis system has been operating for only one year, and preliminary results have shown high removal efficiency of COD (98%), TSS (99%), TN (59%), and TP (95%).

Treatment wetland systems are particularly well suited to rural applications, where land area is available, but funding for capital improvements and operations and maintenance is limited. These results show that these systems can be a cost-effective solution for small facilities when high levels of treatment are required, and conventional systems are cost-prohibitive.

Brief Biography and/or Qualifications
Jack Wallis recently completed his masters degree in environmental engineering at Montana State University, focusing on maximizing phosphorus removal in a recently constructed treatment wetland in Ennis, Montana. He now works at a consulting firm designing wastewater infrastructure for municipalities in the Pacific Northwest.
 
3:00pm - 5:15pmSession 06B: Stormwater
Session Chair: Ed Wicklein, Carollo Engineers;
Boise Centre West 120B 
 
3:00pm - 3:45pm
ID: 255 / Session 06B: 1
Main Technical Program
Topics: Stormwater
Keywords: stormwater, watershed, planning, water quality, pollutants

From Stormwater Monitoring to Adaptive Management: Getting the Most Out of a Permit-Driven Effectiveness Evaluation

Andy Weigel

Brown and Caldwell, United States of America;

Solutions for reducing pollutant loads in urban stormwater runoff are almost never a one-size-fits-all proposition. Advances in design of Green Stormwater Infrastructure, proprietary treatment systems, and innovative policy strategies have grown at an exciting pace in recent years. With a wealth of solutions, it can be difficult for public entities managing stormwater infrastructure to collect and analyze the various data and information needed to make sound decisions when selecting solutions for specific stormwater management needs. Monitoring data collected for permit compliance alone may not be adequate to answer these questions.

The Ada County Highway District (ACHD) is the lead agency for the only Phase I MS4 Permit in Idaho. ACHD shares permit compliance and stormwater management responsibilities with five other permittees to cover a 58,000-acre permit area that includes the cities of Boise and Garden City. In 2017 ACHD completed an intensive two-year data collection effort in a small residential subwatershed draining to an infiltration best management practice (BMP). Monitoring and modelling results were used to evaluate the effectiveness of this widely used BMP.

The evaluation included:

• Continuous flow and rain monitoring covering 55 rain events;

• Flow-weighted composite water quality sample collection for 6 rain events;

• Modelling of BMP pollutant removal, source loads, and stormwater runoff volume using the Source Loading and Management Model for Windows (WinSLAMM); and

• event-based qualitative observations.

The presentation will provide information on how the results of this evaluation are being used to refine runoff volume and pollutant loading estimates for larger, more complicated, subwatersheds throughout the permit area, and inform updates to BMP design guidance. The presentation also includes a discussion of how the results of this effectiveness evaluation and other permit-driven studies and evaluations are being used to guide the next phases of data collection and planning efforts to achieve higher pollutant load reductions in urban stormwater runoff.

Brief Biography and/or Qualifications
Andy Weigel is a senior hydrogeologist with Brown and Caldwell. He focuses on stormwater quality management and water resources planning projects for both the public and private sectors. He graduated from Boise State University in 2009 with a BS in Geosciences.

3:45pm - 4:30pm
ID: 168 / Session 06B: 2
Main Technical Program
Topics: Stormwater
Keywords: Low Impact Development, SLOPES V Permitting, Fish Passage

Merging Stormwater and Safety Opportunities; When Forces Unite

Nick McMurtrey1, Kaaren Hofmann2

1Murraysmith, United States of America; 2City of Newberg, Yamhill County, Oregon, United States of America; ,

Despite the building boom underway in the Pacific Northwest, stress prevails within the capital budgets available to municipal agencies. Resource demands from regulatory requirements, a saturated bid climate, active community members, right-of-way encroachments, and franchise utility conflicts all compete for infrastructure improvement funding.

The City of Newberg commenced a corridor safety upgrade in 2015 on a prominent collector route. Upgrades involved improving multi-modal safety through introduction of bike lanes, sidewalks, lighting, enhanced pedestrian crossings, and speed appropriate geometric roadway design. During the process, Murraysmith and the City identified multiple synergetic opportunities along the way to incorporate stormwater management, fish passage upgrades, right-of-way acquisition and utility undergrounding while managing a deficit in CIP funding.

This presentation will help attendees:

1. Identify stormwater opportunities for projects considering similar safety improvements

2. Provide budgeting assumptions for stormwater improvements relative to existing CIP’s and master plans

3. Inform public involvement campaigns to show rate payers tangible results

4. Review construction options available for rapid assembly fish passage structures

Brief Biography and/or Qualifications
Nick McMurtrey, P.E., has Bachelor of Science in Civil Engineering from Oregon State University. Nick has worked as an engineering consultant for 15 years, serving a variety of planning, design and construction roles on transportation and water projects for municipal clients.

Kaaren Hofmann, PE has a Bachelor of Science in Engineering from Saint Martin’s University. Kaaren has worked in municipal government for 22 years, the last 3 as the City Engineer in Newberg.

4:30pm - 5:15pm
ID: 192 / Session 06B: 3
Main Technical Program
Topics: Stormwater
Keywords: Stormwater Public Outreach

Creative Community Engagement Improves Stormwater Outcomes

Elizabeth Spaulding1, Emiline Hogg2

1The Langdon Group; 2City of Nampa Environmental Compliance Division; ,

It takes an entire community to meet the challenges of reducing pollutants in stormwater. Individual behavior changes can have a significant impact on what pollutants end up down the drain, and public education on stormwater issues can drastically improve water quality outcomes.

The City of Nampa Environmental Compliance Division’s Stormwater Outreach Program has been recognized as a leader in engaging the public to meet its stormwater objectives. The program strives to improve local waterways by providing education and outreach about the benefits of clean water, with a special focus on underserved populations. Not only do these efforts improve water quality outcomes, they empower the local community members and strengthen the relationship between the city and its citizens.

This presentation will highlight the variety of activities that the City of Nampa’s Stormwater Outreach Program has implemented since 2010, including:

• Community Clean Up Days

• Nampa School District Partnership

• Nampa Stormwater Advisory Group

• City Acres Park Stormwater Kiosk

• Stormwater Summer Camp

• Bilingual Educational Material

This presentation will also address the importance of engaging underserved populations, and speak to the City’s approach for ensuring the interests and needs of these populations are incorporated into the outreach programming.

Brief Biography and/or Qualifications
Elizabeth Spaulding is a project manager and facilitator with The Langdon Group. She has extensive experience supporting local, state and federal agencies in engaging the public to address complex environment and natural resource issues across the west. Elizabeth has provided public outreach support to the City of Nampa’s Stormwater Outreach Program since 2016.


Emiline Hogg is the Public Outreach Coordinator for the City of Nampa’s Environmental Compliance Division. Prior to joining the City in 2015, she worked as an educator for the Nampa School District.
 
3:00pm - 5:15pmSession 07B: Solids
Session Chair: Preston Van Meter, Murraysmith;
Boise Centre East 410C 
 
3:00pm - 3:45pm
ID: 114 / Session 07B: 1
Main Technical Program
Topics: Solids
Keywords: Filtration Theory, Dewatering, Thickening, Equipment Specifications

Moneyball for Biosolids Dewatering

Kelly Brown

BDP Industries, Inc., United States of America;

Problem Statement:

It is a common problem in the wastewater industry for a plant wanting to go from ponding or liquid field application of waste sludge to dewatering followed by drying or land application or haulage to a landfill. In accomplishing this process change the dewatering step is critical. If the discharge moisture is too high the landfill won’t take the waste, the energy balance of a Thermal Dryer is primarily a function of moisture, so the overall economics of the project are significantly impacted by the performance of the dewatering stage. What steps should be taken to insure the dewatering process is achieved?

What is typically done is pilot testing with small scale dewatering units. This article will cover the belt press and screw press options and the analysis to use that based on established filtration theory will develop bid specifications that insure the acquired dewatering equipment will meet the process objectives. A perusal of dewatering bid specifications shows few incorporate the specifications items that should be reference if basing the equipment selection on dewatering theory and the pilot test results.

Approach:

This article will cover a recent pilot trial for determining equipment sizing on a project and go through an analysis of the test results based on filtration theory so that specifications are written that will insure the desired process objectives are met. What are the equipment specifications that relate to filtration theory and process performance, they are in order of their importance:

F

1. Filtration Area

2. Feed Distribution

3. Gravity Section Control

4. Cake Pressure / Time Under Pressure

5. Drive System: Speed / Control

The article will go through an analysis of all the filtration data that can and should be taken and demonstrate how using filtration theory the bid specifications can be generated that will insure desired process objectives are met.

Brief Biography and/or Qualifications
Education: BS Chemical Engineering, Masters Business Administration

1999 to Present: Director Sales and Marketing BDP Industries.

1985 to 1999: Director of Research / Product Development, Eimco Process Equipment Co

1979 to 1985: Project Manager Getty Minerals

1972 to 1979: Project Engineer: Research and Development Group, Eimco

My entire career has been involved in Filtration Technology.

3:45pm - 4:30pm
ID: 308 / Session 07B: 2
Main Technical Program
Topics: Wastewater Treatment Processes, Solids, Energy
Keywords: anaerobic digestion, solids handling, biosolids, biogas, CHP

City Of Moscow Solids Management Alternative Feasibility Study

Casey Bryant, Kenny Sheffler, Kirsten Dolph, Nicole Tompkins, Cody Sprague

University of Idaho, United States of America; , ,

This project investigates an upgrade to the solids handling of the City of Moscow’s Water Reclamation and Reuse Facility (WRRF). Currently, waste activated sludge (WAS) is dewatered and transported to Latah Sanitation where it is composted to achieve Class A biosolids status. This is a costly method of solids handling which has few opportunities to realize resource recovery. Additionally, Moscow forgoes primary clarification – opting to treat all influent wastewater in its activated sludge basins.

In this study, anaerobic digestion is considered due to its ability to produce biogas. Biogas, rich in methane, can be used with combined heat and power (CHP) to provide electricity and heat to the WRRF, with the potential to offset operational costs and contribute to achieving resource recovery. Three different high-rate digestion alternatives were considered: single stage, acid-gas phased, and thermal hydrolysis pretreatment coupled with a single stage digester. Due to the complexity and uniqueness of the Moscow WRRF, using thermal hydrolysis to pretreat WAS before digestion proved the best of the three alternatives. However, when compared to the current operations, the disadvantages outweighed those of the current operations resulting in a final recommendation of a “no-build”.

Brief Biography and/or Qualifications
Nicole is a senior from Vancouver, Washington studying Civil Engineering at the University of Idaho.
Kenny is a senior studying electrical engineering at the University of Idaho. He has an interest in biogas as it relates to his passion for renewable energy.
Casey is a graduate student at the University of Idaho working on his master’s under Dr. Coats. His research focuses on resource recovery and process modelling. He is expected to graduate in Spring 2019.
Kirsten is a senior at the University of Idaho studying Civil Engineering and Spanish.

4:30pm - 5:15pm
ID: 189 / Session 07B: 3
Main Technical Program
Topics: Solids
Keywords: Thickening, digestion, capacity, biogas

Unlocking Idle Capacity in Old Digesters

Patricia Tam, Chris Muller, Tadd Giesbrecht

Brown and Caldwell, United States of America;

Increasing digester capacity is one of the costliest capital improvements in a wastewater treatment plant. This could take the form of adding new digester tanks, converting to an enhanced digestion process, or upgrading the thickening process. Of these, thickening process improvements could provide significant capacity gain at a cost much lower than the other approaches. This case study is related to the recent upgrade at the Central Kitsap Treatment Plant (CKTP), which includes upgrades to both liquid-stream and solids-stream processes.

The digestion system at CKTP treats primary and waste activated sludge (WAS) generated at CKTP, as well as secondary sludge generated at three other, smaller plants operated by Kitsap County. The two existing anaerobic digesters were approaching capacity and it was not possible to safely and reliably take one unit out of service for maintenance for extensive periods. In addition, the existing boilers could no longer beneficially use the biogas, so that the biogas was routinely combusted in a flare and wasted to the atmosphere.

As part of a larger plant upgrade, the thickening scheme was changed from co-thickening in two existing gravity thickeners to separate thickening of primary sludge thickening in the gravity thickener and WAS thickening in a new rotary drum thickener (RDT). This results in digester feed sludge at about twice the percent solids compared to that prior to the upgrade and doubling of the solids processing capacity of the digestion process. The thicker digester feed sludge also allowed for a new, more efficient energy strategy for the plant. A new combined heat and power (CHP) system was included in the upgrade, which provides beneficial reuse of the biogas, significantly reduces the use of fuel oil while meeting the system process heating needs and producing power, and reduces greenhouse gas (GHG) emissions.

Brief Biography and/or Qualifications
Patricia Tam is a process engineer at Brown and Caldwell with 22 years of professional environmental engineering experience. She has extensive experiences in process design and modeling of biological treatment systems, plant capacity assessment, aeration system design, and facility planning. Ms. Tam also has experience in hydraulic modeling, UV disinfection system, odor control, and predictive fate modeling for air emissions.
 
3:00pm - 5:15pmSession 08B: Secondary Treatment
Session Chair: Mike McKamey, Beaver Equipment;
Boise Centre West 110A/110B 
 
3:00pm - 3:45pm
ID: 132 / Session 08B: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Nitritation, EBPR, post-anoxic denitrification

Toward Achieving Mainstream Nitritation with Post-Anoxic EBPR

Jason Mellin

University of Idaho, United States of America;

Due to the potential for significant energy savings, achievement of stable nitritation for treatment of municipal WRRF mainstreams has received increasing research attention in recent years. Despite this attention, practical implementation by full scale facilities remains difficult. Specific challenges include lower wastewater temperatures, lower influent nitrogen, and variable influent loading, as compared to conditions realized in the most conventional sidestream treatment (i.e., ANAMMOX). Moreover, achieving stable nitritation within a biological nutrient removal process is hindered by additional factors, including competition for nutrient resources between different microbial groups. Recent research at UI has indicated, however, that a nitritation process coupled to EBPR in a post-anoxic configuration is viable and holds the potential for significant energy savings while achieving low effluent ammonia, NOx, and phosphorus concentrations. Furthermore, this process has the potential to provide a microbial source for bioplastic production, thereby further advancing the Resource Recovery concept. This presentation will discuss research performed at the University of Idaho on this EBPR process, with a focus on operating parameters, aeration and ammonia control strategies, process resiliency, and relevant microbial species interactions and metabolisms. In addition, the potential benefits and feasible implementation of this process at full scale facilities will be discussed.

Brief Biography and/or Qualifications
Jason Mellin is currently pursuing a PhD. in Civil Engineering at the University of Idaho. He obtained a Bachelor of Science in Civil Engineering from UI and worked as an engineer in consulting previous to returning to school; he earned his MSc in Civil Engineering from UI in May 2017. In addition, he was a PNCWA scholarship award recipient in 2014 and 2017.

3:45pm - 4:30pm
ID: 155 / Session 08B: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: VFA, Phosphorus, Filtrate, EBNR, EBPR

Optimizing Volatile Fatty Acid Filtrate Extraction from Fermented Primary Sludge

Austin Carnes, Ron Gearhart, Zane Custer, Tony Harmon

City of Boise, United States of America;

The West Boise Water Renewal Facility was found to be constrained in its capacity to biologically remove phosphorus due to a limited supply of volatile fatty acids (VFAs), the preferred food source of phosphorus accumulating organisms. West Boise’s supplemental VFAs are produced by side stream primary sludge fermentation. A VFA rich filtrate is extracted from the fermented primary sludge (FPS) using rotary screen thickeners (RSTs). An optimization study of this extraction process was undertaken to determine if the supply of VFAs delivered to the treatment process could be increased. It was hypothesized that the thickened, fermented primary sludge (TFPS) that was being sent to digestion contained significant residual VFAs. To test this hypothesis, several samples of TFPS were obtained, diluted with deionized water, mixed, and the liquid fraction extracted using a pilot screen of the same material as the RSTs. Analyses of these samples showed VFA concentrations as high as those of the filtrate already being delivered to treatment. As a result, a two stage extraction pilot test was initiated. FPS was pumped through an RST, in which first stage extraction took place. It then discharged into a hopper along with dilution water. The contents of this hopper were pumped to a second RST in which second stage extraction took place. Testing of the filtrate from prior to and during the two stage extraction pilot showed an increase in VFA extraction of 677 pounds per day, a 48.5% increase. After the two stage extraction pilot, effluent dissolved reactive phosphorus from the best performing aeration basin fell by 70%. Plant effluent dissolved reactive phosphorus fell by 10%.

Brief Biography and/or Qualifications
AUSTIN CARNES
30 W HAVASU FALLS ST - MERIDIAN, ID 83646 - Phone: (503)367-3033 - Email: austin.w.carnes@gmail.com

WORK EXPERIENCE
CITY OF BOISE Boise, Idaho
Wastewater Operator II May, 2016 – Present
•Monitored, adjusted, maintained, and analyzed complex wastewater treatment processes.
•Performed sample collection, laboratory testing, and process profiling.
•Reviewed laboratory and statistical data to make process recommendations.
•Assisted with special projects such as stress, pilot, and optimization testing of equipment and processes.
•Provided training and observation of new wastewater operators.

CITY OF BOISE Boise, Idaho
Wastewater Operator I March, 2015 - May, 2016
•Maintained and operated wastewater plant equipment and processes.
•Sampled and analyzed influents and effluents as prescribed by analytical procedures.
•Recorded and analyzed test results and other pertinent data to identify variations.
•Maintained accurate records of process and lab results.

CLACKAMAS RIVER WATER Clackamas, Oregon
Microbial Source Tracking Intern June, 2014 - September, 2014
•Performed field analysis of water samples for chemical and biological contaminants.
•Performed advanced microbiological assays to classify bacterial contaminants in surface water.
•Wrote SOP for human bacteriodetes and enterococci real-time PCR.
•Translated complex scientific information into plain language for blog posts.

WATER ENVIRONMENT SERVICES Milwaukie, Oregon
Wastewater Treatment Plant Operations Intern April, 2014 - May, 2014
•Collected and ran permit and process control tests on wastewater and solids samples.
•Maintained wastewater treatment plant structures and equipment.
•Assisted in plant equipment operation and process control.

CLACKAMAS COMMUNITY COLLEGE Oregon City, Oregon
Learning Support Specialist January, 2014 - June, 2014
•Tutored students in water treatment, wastewater treatment, chemistry, biology, microbiology, and math.
•Assisted faculty in improving course materials for better student outcomes.
•Created and modified homework problems sets and assisted faculty in creating exams.
•Substitute taught environmental chemistry lab.

EDUCATION
PORTLAND STATE UNIVERSITY Completion Date Bachelor of Science, summa cum laude, Environmental Science June, 2013

LICENSES
WASTEWATER TREATMENT – IDAHO CLASS II EXPIRES MARCH 2018

4:30pm - 5:15pm
ID: 195 / Session 08B: 3
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: VFA, fermentation, lab testing

Heating Primary Sludge for Increased Volatile Fatty Acid Fermentation

Jana Otero, Adrienne Menniti, Peter Schauer

Clean Water Services, United States of America;

The Durham Advanced Wastewater Treatment Facility has been practicing biological phosphorus removal (BPR) for over two decades. The facility relies on a primary sludge Unified Fermentation and Thickening (UFAT) process to augment the influent Volatile Fatty Acids (VFA) and support BPR. The process currently needs to be expanded because the solid residence time (SRT) available is too low to provide adequate VFA production when wastewater temperatures are low. A capital improvement project to expand the UFAT process is scheduled for completion in 2022. As an interim solution, primary sludge heating is being installed to increase VFA production.

Preliminary bench-scale testing will develop the start-up and operational plan for the full scale heating. Two temperature controlled jacketed reactors will be used to operate continuous flow, bench-scale fermentation at temperatures ranging from 15-30 deg C and SRT ranging from 1-5 days. Testing for each condition will be conducted for longer than three SRT to reach steady state operation. Influent primary sludge TS, reactor pH, soluble VFA concentration, and effluent TS will be monitored.

Year-round operational data already shows that increasing the primary sludge temperature from 15 to 20 degrees C almost doubles the VFA produced. Heating the primary sludge should stabilize VFA production throughout the year and promote more stable BPR. This is exceptionally important in the early months of the summer permit season when BPR is highly VFA deficient.

This presentation will review the full-scale operational data that supports the potential benefit for heating the unit process, the bench-scale testing results, and the implications the heating project has on the overall facility expansion. The following key questions will be addressed:

• What SRT and temperature combination produces the most stable performance for VFA production?

• With sludge heating, what design SRT should be used for fermentation capital expansion design criteria?

Brief Biography and/or Qualifications
Jana Otero is an Operations Specialist in the Technology Development & Research group for Clean Water Services. She received her bachelor’s degree in Environmental Engineering from Oregon State University. Jana graduated with summa cum laude honors.
 
4:00pm - 5:00pmCollections Committee Meeting
Boise Centre West 140 
4:30pm - 5:45pmWomen’s Networking Event
Session Chair: Corinne DeLeon, Seattle Public Utilities;
Session Chair: Shannon Ostendorff, Lonza;

Women only please

Boise Centre East 420A 
5:00pm - 7:00pmExhibitors Opening Reception

All registrants welcome!

Grand Ballroom - Exhibit Hall - Boise Center West 
5:15pm - 6:15pm5S Meeting
Boise Centre West 140 
6:00pm - 6:30pmResource Recovery Committee Meeting
Boise Centre West 110C 
7:00pm - 8:00pmDinner—Monday Night Networking Dinner

Buffet—Complete Packages or Monday dinner ticket required

Boise Centre East 400 
8:00pm - 11:30pmNetworking Night

All registrants welcome!

Offsite: White Dog Brewing Company | 705 W Fulton St, Boise 

With support from the PNCWA Students & Young Professionals Committee

White Dog Brewing Company | 705 W Fulton St, Boise 
Date: Tuesday, 23/Oct/2018
7:00amRegistration Desk is Open

7:00 AM - 5: 30 PM

 
7:00amSpeaker Ready Room is Open

7:00 AM - 5: 00 PM

Boise Centre West 110C North 
7:00am - 8:00amOperators Breakfast—Tuesday

Preregistration required

Boise Centre East 420A 
7:00am - 8:30amBreakfast—Tuesday Breakfast

Complete Packages only

Boise Centre East 400 
8:00am - 9:30amSession 09 part 1: Leadership/Resiliency
Session Chair: Shannon Ostendorff, Lonza;
Boise Centre East 420B 
 
8:00am - 8:45am
ID: 202 / Session 09 part 1: 1
Main Technical Program
Topics: Leadership
Keywords: Leadership, decision making, self-limiting behaviors, biases, team

The Effects of Cognitive Biases and Self-limiting Behaviors on Leadership

Lazaro Eleuterio

Washington State Department of Ecology, United States of America;

Highly qualified and experienced leaders may make bad decisions because they use flawed and wrong information. Approximately eighty percent of workers’ time is spent on collaborative or team activities. However, seven out of ten teams fail to produce the desired results and half of their decisions fail. A vast majority of flawed decisions are triggered by errors of judgment made by managers and can have damaging consequences to projects, or to an entire organization. Self-limiting behaviors and cognitive biases are the major causes of poor decision-making processes. In the context of a project team, self-limiting behaviors are all behaviors that limit one’s ability to make meaningful contributions to the decision-making process; and cognitive biases are the tendencies to perceive information through a filter of personal experience and preferences.

Leaders are more prone to self-limit and experience cognitive biases when they operate under pressure (high stake, time pressure and stress). As a result, they focus on information that is not directly related to the goal or problem, and make poor decisions. Some of the most common cognitive biases in decision making include: confirmation bias, anchoring, framing, overconfidence, fallacy, and fundamental attribution error. Unfortunately, unsuccessful teams pay a lot of attention to personalities, and not to tasks or ideas. Therefore, they spend more time fighting and dealing with conflicts than they do generating ideas or solutions.

In order to succeed, managers must develop a better understanding of what drives behaviors so that they can manage individuals and teams more effectively. It has been proven that well managed teams are more likely to produce more than double of poorly managed teams. It is paramount that leaders understand their own biases when interpreting behaviors and that biases are difficult to overcome once they are present across an organization. Furthermore, leaders must recognize that self-limiting behaviors are very common in team environments and often ignored.

Brief Biography and/or Qualifications
Dr. Eleuterio is a career-long civil/environmental engineer with twelve years of combined experience in the design of water and wastewater treatment facilities, permit management and project management. Dr. Eleuterio has also worked in planning, construction, applied research and teaching.

Prior to joining Ecology, Mr. Eleuterio worked as a water/wastewater engineer in the private sector. As a consulting engineer, he designed treatment systems, wrote design manuals, presented and facilitated technical workshops to convey design and water quality analyses to clients. He has demonstrated ability to make data-driven decisions. As a liaison, he has been able to successfully articulate points of view, ideas and rationale; to communicate in a clear and concise manner that is understood by diverse audiences; and to actively listen to and engage with others.

Mr. Eleuterio’s education includes a bachelor’s degree in Civil Engineering, a master’s degree in Environmental Engineering, a Leadership MBA, and a doctoral degree in Civil/Environmental Engineering.

8:45am - 9:30am
ID: 235 / Session 09 part 1: 2
Main Technical Program
Topics: Resiliency
Keywords: Emergency Operations, pipeline construction

Mud Everywhere – Where To Start? Restoring Water Service In Montecito, CA

Mark Bush PE

Tetra Tech, United States of America;

If you had only one week to restore a main water transmission line, using only materials readily available, following a fire and mudslides what would you do?

During December 2017, the Santa Ynez Mountains and portions of the City of Montecito were burned by the Thomas Fire, California’s largest recorded wildfire. Then, on January 9, 2017, Montecito experienced intense rainfall estimated at nearly an inch of rain falling within fifteen minutes. The Montecito Water District’s infrastructure was significantly impacted. The entire system’s integrity was compromised and called for rapid assessment of damages and prioritization of emergency repairs.

This presentation will demonstrate how the District addressed Priority 1, the repair of the Highline. The Highline connects the District from the west to east and allows the District to feed their higher elevation water reservoirs. The damage to the Highline occurred at six creek crossings. A repair strategy had to be formulated that could be constructed within seven days with material that was available.

All repairs were completed within the one week period. The District then proceeded with super chlorinating the system to lift the boil order and restore both fire flows and potable water service. The District is proceeding with the design of permanent repairs for the creek crossings to fully restore the capacity of the system.

Brief Biography and/or Qualifications
Mr. Bush has over 21 years of professional experience in water, wastewater and recycled water engineering. He has been responsible for the completion of over 100 miles of potable water, recycled water and sewer mains, 20 potable water and recycled water pump station and well projects and 14 potable and recycled water reservoirs. His design and project management experience included large scale regional water supply projects including San Antonio Central Water Integration Pipeline Project; and the Carlsbad Seawater Desalination Project. He is currently working on a 47 MGD industrial wastewater treatment facility for Georgia-Pacific. Mark holds a BS in Civil Engineering and a BS in Environmental Engineering from the University of California, Irvine.
 
8:00am - 9:30amSession 10 part 1: Collections Systems
Session Chair: Jeff Schmidt, Jacobs;
Boise Centre East 410A 
 
8:00am - 8:45am
ID: 144 / Session 10 part 1: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: condition assessment, force main

Practical Considerations for Force Main Inspection in the Pacific Northwest

Daniel Buonadonna

Jacobs;

Following the boom in municipal construction in the latter half of the 20th century, much of the buried infrastructure is approaching the end of its design life, including sewer force mains. Condition assessment of these pressure sewers has been an increasing priority for many municipalities, and the Pacific Northwest is no exception. In addition to selecting the appropriate inspection tool from suite of technologies available, taking into account local contextual information on the construction materials, methods, and longevity of force mains is important to properly characterize the infrastructure. This presentation will cover a variety of case studies on force main condition assessment in the Pacific Northwest, outline the methods used and results obtained from the inspections, and share practical considerations for utilities considering force main condition assessment in the region.

Brief Biography and/or Qualifications
Dan Buonadonna is the Global Practice Leader for Jacob's Condition Assessment and Rehabilitation Services (CARS) team. He has over 16 years of pipeline analysis, design, and rehabilitation experience for over 1,500 miles of buried water, sewer, and industrial infrastructure. He has authored over 20 technical publications and holds a seat on the Industrial Advisory Board for the Trenchless Technology Center. Dan has a Bachelor's degree in Civil Engineering from the University of Notre Dame, and a Master's in Environmental Engineering from the University of California, Berkeley.

8:45am - 9:30am
ID: 295 / Session 10 part 1: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Rehabilitation, Risk

Boise’s City’s Evolving Rehab Program – Balancing Risk and Cost

Richard Wiebe, Doug Rhinehart, Dan Holland

Boise City, United States of America; ,

Boise City’s rehab program has evolved over the years. As the system ages and rehab costs rise, how do you balance risk and cost? And what are the “hidden” risks that aren’t apparent in the numbers?

The City has taken an effective rehab program and documented the decision-making process in its SPORE (System Planning Operations Rehabilitation Evaluation) Program. The decision-making process coupled with operations and rehab experience provides an effective and impactive program that is targeting our high-risk infrastructure.

Experienced staff continue to monitor the program. Where are the weaknesses? What are the hidden risks not captured? And how do we continue to evolve to protect the public and use our limited resources effectively?

Brief Biography and/or Qualifications
Richard Wiebe, P.E.
Assistant City Engineer - City of Boise
Project Manager/Project Engineer - T-O Engineers, Meridian, ID
Senior Surface Engineer - Greens Creek Mine, Juneau AK
Project Manager/Project Engineer - J-U-B Engineers, Boise, ID
Mr Wiebe has been studying sewer systems for most of his professional career and recently joined the City of Boise to assist with the City's growing and aging sewer infrastructure.
 
8:00am - 9:30amSession 11 part 1: Planning
Session Chair: Corinne DeLeon, Seattle Public Utilities;
Boise Centre East 410B 
 
8:00am - 8:45am
ID: 273 / Session 11 part 1: 1
Main Technical Program
Topics: Planning
Keywords: utility management, facility planning, outreach, education, communication

Helping the Community Define the Plan: Boise's Facility Plan

Haley Falconer1, Matt Gregg2

1City of Boise, United States of America; 2Brown and Caldwell;

Our industry is fundamentally shifting from one focused on disposing of waste to managing and recovering resources. This shift also requires us to reconsider how we use community interest and feedback to shape our planning processes. The City of Boise (city) has embraced this paradigm shift and is in the middle of a multi-year planning process that is founded in understanding community interest and reflecting these interests in the products the city ultimately selects to produce.

Early public engagement during the planning process enabled Boise to consider a vast array of water and energy opportunities, including going as far as considering direct potable reuse. The city developed programmatic definitions of these opportunities that highlighted the potential benefits and consequences of pursuing each approach. This information was used as part of a stakeholder engagement campaign, the methods of which are discussed in another abstract. Key boundary conditions for the city’s planning process identified from these efforts included:

• The community’s interest in protecting environmental resources, including the Boise River,

• An interest in pursuing water opportunities that were more resilient to changing climate conditions and allowed for “banking” of water resources,

• The need to demonstrate the return on investment for energy production opportunities, and

• The scale of the investment ratepayers would be willing to make to pursue specific opportunity.

Defining these boundary conditions from stakeholder engagement has allowed the city to demonstrate how the community has shaped the planning effort for Water Renewal Services. This will enable a more effective deployment of the long-term plan. This presentation will focus on how community feedback was translated to the technical planning process. Specifically, how community interests were translated to tangible planning boundary conditions and alternatives were adjusted to match community feedback.

Brief Biography and/or Qualifications
Haley is the Environmental Division Manager for the City of Boise. In this role, she is responsible for the City of Boise’s environmental programs, including water quality and permitting, wastewater planning and capital improvement program, trash, recycling and composting, energy, air quality, and sustainability. Over the past two years, she has led the City’s Water Renewal Facility Plan – a 20-year planning document for our water renewal (wastewater) facilities. This process includes a focus on resource management and recovery, community input, regulatory changes, and economic development.

8:45am - 9:30am
ID: 186 / Session 11 part 1: 2
Main Technical Program
Topics: Planning
Keywords: Utility Management, Operating Context, Constraints, Vulnerabilities

Looking Back to Inform the Future: The West Point Half-Century Assessment

Steffran Neff1, Tiffany Knapp2

1Brown and Caldwell, United States of America; 2King County Wastewater Treatment Division;

West Point Treatment Plant (West Point) serves as the key wastewater treatment facility for a significant portion of the King County Wastewater Treatment Division (WTD) service population. In February 2017, West Point suffered a severe flooding event. As part of the response to the February event, the King County Council requested that issues affecting West Point’s current and future performance be reviewed and assessed through a half-century look back.

West Point faces a more complex and challenging operating environment today compared to when it was constructed in the mid-1960s. The Half-Century Assessment evaluated West Point’s conditions in key areas of potential impacts: changes in the operating environment over the plant’s 50-year history, current and future constraints that may limit plant performance, and potential system vulnerabilities that have emerged over the plant’s history of operation.

Specific changes to operating environment included:

• Increases in service population

• Current and projected climate-driven changes in weather patterns and flow demand

• Changes in regulatory requirements

• Increased impermeable cover

• Increased concerns about water quality

• Increased industrial contributions to wastewater flow

• Increased level of toxics

The constraints and limitations included:

• Current and projected capacity

• Changes in wastewater processing technology

• Functional, design, and engineering constraints

• Land-based limitations

The system vulnerabilities included:

• Aging infrastructure

• Wet weather flow management reliability

• Redundancy

• Emergency bypass

• Power reliability

• Flooding

• Seismic resilience

• Tsunami

This project was fast-tracked, with only three months to develop the report. The team reviewed more than 50 documents, conducted workshops with WTD staff, and did high-level analysis to determine limitations at West Point. The consultant worked collaboratively with WTD to identify risks and recommend improvements to position West Point to meet future challenges. This presentation will provide an overview of the assessment process and highlight the major findings of the report.

Brief Biography and/or Qualifications
Steffran Neff (Brown and Caldwell) is a chemical engineer with more than 26 years of experience in the engineering consulting industry with an asset management and wastewater planning background. She was the consultant project manager for the Half-Century Assessment where she led a multidisciplinary team in developing the report. She is a certified Project Management Professional who has worked with King County Wastewater Treatment Division since 2004.
 
8:00am - 9:30amSession 12 part 1: Energy Optimization
Session Chair: Anthony Perreira, City of Boise;
Boise Centre East 410C 
 
8:00am - 8:45am
ID: 135 / Session 12 part 1: 1
Main Technical Program
Topics: Energy
Keywords: Energy, Management, Improvement

Maintaining Momentum: Methods for Continued Growth and Energy Savings

Tonya Zinzer, Jennifer To

Clean Water Services, United States of America;

Wastewater treatment is an energy intensive business, with the highest operating cost after labor and chemicals being electrical energy consumption. Clean Water Services has built an energy program with a strong emphasis on capital improvements and participation from engineering and supervisory level staff. Partnering with Energy Trust and their Strategic Energy Management (SEM) offering, our current focus is to incorporate low cost operations and maintenance (O&M) improvements. To be successful, the Energy Program must continue to evolve and identify new methods to keep the momentum moving forward.

In November 2016 CWS joined the Continuous SEM offering with Energy Trust and was able to implement a variety of O&M measures. These included a variety of “low hanging fruit” including compressed air leak repairs, adjustments of support equipment setpoints, and others. As we move into Year 2, our Energy Team has been challenged to identify and implement more O&M improvements increasing our annual goal from 500,000 kWh/yr savings to 750,000 kWh/yr savings.

The team continues to meet monthly where new items are reviewed, triaged, prioritized, and assigned. Each month the member assigned responsible must provide an update on the status of the project, request any assistance needed, and work towards a completion date. This helps keep projects progressing in a positive direction. This alone is not enough to keep enthusiasm, excitement, and involvement on the team.

This presentation will provide a brief overview of the present CWS Energy Program and how the program continues to adjust as we implement the “low hanging fruit” and must continue to identify methods to promote innovation and continued excellence. This includes training staff on energy efficiency, coordination with our SEM coach to host events that bring together water resource recovery facility personnel, and participation in utility demand reduction programs to provide a basis for continuous improvement.

Brief Biography and/or Qualifications
Tonya Zinzer is the Energy Sustainability Engineer for Clean Water Services, working to grow the Energy Program for the past 1.5 years. Previous to CWS, Tonya was an Energy Engineer at Portland General Electric working with Energy Trust of Oregon to help industrial customers participate and evaluate energy efficiency opportunities.

8:45am - 9:30am
ID: 237 / Session 12 part 1: 2
Main Technical Program
Topics: Aeration
Keywords: Turbo Blower, DO, energy

Process Optimization and 30% Energy Efficiency with an “Expensive” Turbo Blower

John Koch1, Jeff Zahller1, Kenny Packard1, Mikael Love2, Gary Duranceau2, Chad Tesarik2, Tom Mayes2

1HDR, United States of America; 2City of Mount Vernon, WA; ,

Like many utilities, the City of Mount Vernon, Washington, is striving to reduce costs and limit its carbon footprint. As part of a citywide energy optimization effort, they recognized opportunities for energy grants to purchase new technology with higher efficiencies.

Maintaining process control of an activated sludge process requires stable air flow from the blowers, control system, and control valves. The City’s existing, aged multistage centrifugal blowers did not have a very wide range of turndown, and an automated air flow control butterfly valve was not providing stable air flow control.

Diurnal trends and historical data were reviewed to determine the lowest air flow usage, reducing the potential of specifying a blower that cannot be turned down low enough during the nighttime hours. A valve sizing analysis was also performed, which resulted in smaller control valves that could provide better control of the basin air flows. The City determined that the purchase of an energy efficient turbo blower and smaller air flow control valves would have a payback of just over 4 years.

A new blower was purchased through a competitive procurement bid process. However, the lowest responsive bid was not determined on lowest capital cost but on the lowest 20-year present worth cost, which included guaranteed power usage at a series of differing air flows.

During the initial blower start-up, a DO dead band of ±0.25 mg/l was set to mitigate the control valves from continuous modulation and the resultant blower speed variations. Stable blower operation, flat line DO control, and 30 percent energy savings were achieved with the new blower.

The City deemed the new turbo blower a success with a 30 percent energy savings, in addition to a rebate from the local utility, which paid for over 50 percent of the blower purchase price.

Brief Biography and/or Qualifications
John has over 50 years of varied experience in planning, design, construction, commissioning and trouble shooting of water and wastewater facilities in the United Stated. He is a Senior Project Manager and Vice President for HDR for over half his career and is a Board Certified Environmental Engineer by the American Academy of Environmental Engineers and Scientists.

Jeff has been a process engineer working in the research, design and construction of both water and wastewater treatment facilities for 14 years. He served as the Chair of the PNCWA Odor and Air Quality Committee from 2015-2017. His focuses are in chemical feed systems, primary clarification, odor control, pumping systems and hydraulics, digester gas handling, secondary treatment, disinfection, and corrosion control. He holds a BS in Chemical Engineering from Montana State University, an MSE from the Environmental Engineering department at the University of Washington, and is a registered Chemical Engineer in Washington State.
 
8:00am - 9:30amSession 13 part 1: Disinfection
Session Chair: Amy Dammarell, HDR;
Boise Centre West 120A 
 
8:00am - 8:45am
ID: 238 / Session 13 part 1: 1
Main Technical Program
Topics: Disinfection
Keywords: UV Disinfection, Lessons Learned

Do's and Don'ts of Wastewater and Reuse UV System Implementation

Traci Brooks, Harold Wright, Mark Heath, Andrew Salveson

Carollo Engineers, United States of America;

Ultraviolet (UV) light is often used for wastewater and reuse water disinfection around the United States. The design, validation, and operation of reuse UV systems are often conducted in accordance with NWRI UV Guidelines. Over time, many UV systems have been found to operate inefficiently which increases operation and maintenance (O&M) costs and can lead to permit violations. A WateReuse Research Foundation project entitled “UV Disinfection Knowledgebase for Reuse Applications” is evaluating some of the factors that can lead to inefficiencies in the UV system.

UV system performance audits were conducted at participating UV facilities located across North America. The UV audits were performed on a range of low-pressure high-output (LPHO) and medium pressure (MP) UV systems manufactured from a variety of vendors. Results from this study and audits from prior studies have shown that intermittent indicator microbe concentrations leaving the UV reactor are caused by a bypass of wastewater effluent through UV reactor channel drains lines or leaky gates, low wastewater UV transmittance (UVT), excessive lamp aging and fouling, and failed lamps. Typically, the UV dose monitoring algorithm used by the UV systems predicts UV dose delivery using assumed lamp aging and fouling factors as well as assuming all lamps are on. The equations do not predict performance with failed lamps or excessive lamp aging and fouling. One way to monitor UV dose delivery is using UV sensor based monitoring which takes into account the impact of failed lamps as well as lamp aging and fouling on the delivered UV dose.

Based on the results from seventeen UV audits, there are four key findings that will be discussed during this presentation. These findings include the need for realistic lamp aging and sleeve fouling factors, the importance of UV sensor monitoring, the impact of bypass on UV disinfection, and having realistic expectations for operation and maintenance.

Brief Biography and/or Qualifications
Traci Brooks has worked in the UV group at Carollo Engineers, Inc. for the past 7 years. She has conducted validation testing on more than twenty-five UV reactors at Carollo's Portland UV Reactor Validation Facility and assisted in the startup of several UV systems.

8:45am - 9:30am
ID: 140 / Session 13 part 1: 2
Main Technical Program
Topics: Disinfection
Keywords: wastewater, UV disinfection, closed vessel treatment, cost and space savings

Three Major Advantages of Disinfecting Wastewater in Closed Vessel UV Systems

Patrick Bollman. P.E.

Evoqua Water Technologies, United States of America;

Ultraviolet (UV) disinfection is now a standard feature in many wastewater utilities. UV has also been adopted by the drinking water community, as a barrier against chlorine tolerant species such as Cryptosporidium and Giardia. The technology is widely favored due to its non-chemical nature, the fact that no subsequent de-chlorination process is required, and its ability to be unselective in disinfection performance.

Throughout the years, the focus in municipal wastewater is to install UV in an open channel. However, there are alternative UV solutions to achieve required disinfection.

The presentation will focus on the following aspects:

• UV fundamentals (UV 101) – what is UV, how is UV light generated, what UV does and how it works, how organisms respond to UV, and a comparison of available lamp types.

• Equipment selection – what manufacturers will require to provide an adequately sized system including flowrates (peak, average, and minimum), water quality (transmittance – how much light passes through the water, soluble iron and manganese, hardness, TSS), required disinfection/dose and existing plant hydraulics.

• Introduction to closed vessel UV technology for treatment of municipal wastewater.

• Benefits of closed vessel UV for disinfection including: installation savings, reduced maintenance, and improved safety.

The purpose is to give engineers and municipalities information regarding other forms of successfully operating ultraviolet disinfection systems instead of designing around the "traditional open channel" types of UV disinfection.

Brief Biography and/or Qualifications
Patrick Bollman has been actively involved in the engineering industry since 1999 after graduating from the University of Cincinnati with a Bachelor of Science Degree in Civil and Environmental Engineering. Since 2000 he has been working for UV manufacturers in a variety of capacities. His latest position led him to Evoqua (ETS-UV) serving as a UV Product Manager. Throughout his years in UV, Patrick has been involved in project management, equipment design and sizing for municipal and industrial applications, overseeing representative’s networks, validations for drinking water and reuse, and service and training. Patrick is a licensed engineer in Ohio and a member of the N KY Society of Professional Engineers, WEF, AWWA, International Ultraviolet Association, and Watereuse organizations. Finally he has presented at national, state, and local conferences as well as having articles written in various trade.
 
8:00am - 9:30amSession 14 part 1: Stormwater
Session Chair: Kristi Steiner, Clean Water Services;
Boise Centre West 120B 
 
8:00am - 8:45am
ID: 111 / Session 14 part 1: 1
Main Technical Program
Topics: Stormwater
Keywords: Wet Weather, CSO, SSO, Stormwater

Centralized Versus Satellite Stormwater Treatment

Darin St. Germain, Mark Boner

WesTech Engineering Inc., United States of America;

Wet weather events can inundate collection systems and overwhelm treatment facilities. Treatment of these events is possible at Satellite (at or near a collection system discharge point into a water body) or Centralized (near the main wastewater treatment facility) locations. Enhanced high rate treatment technologies have been proven in these applications to remove 90% particulates and effectuate UV disinfection without the use of chemicals.

This presentation will focus on experiences of applying one such high rate treatment system, the FlexFilter™ compressed media filtration, in these situations. It is a technology that uses hydraulic energy available in the wet weather flow to compress a fibrous media bed and passively filter out a large amount of solids leaving only particle sizes amenable to UV or chemical disinfection. The passive hydraulic compression creates a high porosity gradient in the media bed that removes large and small particles. Performance of the system is high (secondary treatment criteria) and water quality and public health are protected.

Discussion will include how the system functions during operating and cleaning cycles throughout the wet weather event, post-event system cleanup, and activities occurring between wet weather events. The presentation will illustrate the water flow path for treated water, backwash waste and residuals. System requirements such as on-site labor, maintenance and moving equipment will also be covered. Lastly, configuration options and selection criteria when deciding between satellite and centralized treatment facilities will be discussed. Images and operating performance data from existing installations are incorporated throughout the topic areas.

Brief Biography and/or Qualifications
Darin St. Germain, P.E. is WesTech Engineering Inc.’s Group Leader for Concrete Filtration Systems. He is a Registered Professional Mechanical Engineer and has been in the water industry for nearly 30 years primarily focused on drinking water process treatment equipment and wastewater filtration systems.

8:45am - 9:30am
ID: 288 / Session 14 part 1: 2
Main Technical Program
Topics: Stormwater
Keywords: CSO, Planning, LTCP

Developing and Evaluating Combined Sewer Overflow Control Alternatives

Edith Hadler1, John Phillips2, Brian Matson3

1HDR, United States of America; 2King County, Wastewater Treatment Division; 3Carollo Engineers;

The King County Wastewater Treatment Division (WTD) is completing a review of their 2012 Long-term Combined Sewer Overflow (CSO) Control Plan (LTCP) which identifies alternatives for controlling the remaining uncontrolled overflows. WTD’s system has 39 overflow locations; currently, 12 20 are uncontrolled.

The alternative recommendations will reflect the environmental, social, and financial goals of meeting current control needs, considering stakeholder interests and best control approaches available. A Multi-Criteria Analysis (MCA) methodology was used for the evaluation process. MCA is an analytical technique that defines rating/ranking criteria based on the key goals of decision-makers and allows for incorporation of a wide array of criteria.

Twenty-one preliminary alternatives were developed and evaluated considering criteria, risks, and costs. The six major components of the alternatives analysis process included hydraulic modeling, identification of feasible CSO control technologies, preliminary concepts and initial screening, prescreened alternatives and high-level screening, preliminary alternatives development (including evaluation of criteria, risks, and costs), and alternative ranking to identify the recommended alternatives. The process started with a multi-day workshop to identify preliminary concepts which were then evaluated in the multi-step process.

Criteria were developed in consideration of King County priorities and WTD’s vision, mission, and goals, as well as differentiating aspects of past CSO control projects. Criteria are qualitative or quantitative measures by which multiple alternatives are judged, and that incorporate multiple perspectives or values. By incorporating these values and priorities during criteria development, WTD’s mission and vision are reflected in the criteria categories. Risks are considered in the alternatives analysis process to reflect potential issues that are not fully known but could impact costs, schedule, and feasibility. Risks are also used to address the relative constructability of the alternatives.

With this process the County was able to evaluate the alternatives across multiple basins in a documented, defensible process that reflects the agencies’ priorities and vision.

Brief Biography and/or Qualifications
Edith Hadler, based in HDR’s Bellevue, Washington office, is a vice president with 26 years of experience. She holds a Bachelor of Science degree in environmental engineering from Cal Poly, San Luis Obispo. Edith’s consulting experience is primarily in conveyance and CSO planning and design. Edith has a proven track record in managing design of pipelines ranging in size from small city collector sewers to major water and wastewater pipelines with a length of over 120 miles and a construction cost of over $500 million. She has worked on numerous CSO projects including developing alternatives for over 50 CSO basins.
 
8:00am - 9:30amSession 15 part 1: Solids
Session Chair: Caitlin Hubbard, Lake Stevens Sewer District;
Boise Centre East 430 
 
8:00am - 8:45am
ID: 204 / Session 15 part 1: 1
Main Technical Program
Topics: Solids
Keywords: cogeneration, grant, funding, PGE, ETO

Taking Gas For Granted: Cogeneration Engine Funding in the Northwest

Matthew Sprick1, Ben Haney2, Jue Zhao2, Alan Straub1, Tom Mossinger1

1Carollo Engineers, United States of America; 2City of Salem, United States of America; ,

The City of Salem Willow Lake Pollution Control Facility currently generates renewable heat and electricity through the combustion of biogas in one 650 kW cogeneration engine. The 28-year old engine is undersized and inefficient. However, a payback analysis completed in 2009 showed that replacing the cogeneration system would not be cost effective without outside funding incentives.

Fortunately, substantial funding for renewable energy projects has become available through the Energy Trust of Oregon, Oregon Department of Energy, and Portland General Electric. In March 2015, the City was awarded a grant from the Energy Trust of Oregon to develop a preliminary design to upgrade or replace the existing cogeneration facilities at the plant. Based on that preliminary design, PGE awarded the City a $3M grant for the project through their Renewable Development Fund.

In that predesign, the City took the opportunity to determine if other biogas technologies provided a better return on investment than a new cogeneration engine. Critical to the technology direction was the local customer base for alternative fuels and the availability and structure of the funding opportunities.

As with all renewable energy projects in a low rate environment, understanding outside funding opportunities is essential, including what projects are eligible and the requirements for obtaining them. Therefore, a key component of this presentation will be to review and discuss the applications for these funding organizations.

This presentation will cover:

1. Drive behind selecting cogeneration over other biogas utilization technologies.

2. Current design of the City’s new Cogeneration Facility.

3. Evaluation of current funding opportunities, including commonalities and differences between application requirements.

Brief Biography and/or Qualifications
Ben Haney, PE
Senior Project Manager
City of Salem, Oregon

Professional Engineer: OR

BS Environmental Engineering, Oregon State University, 2001

Ben has been working with City of Salem Public Works for over 15 years. His primary focus has been in wastewater collections and treatment, however he has managed a wide variety of complex utility, transportation, and other infrastructure improvements through all aspects of project development, design, and construction. Since 2016 Ben has been the Plant Engineer at the City’s Willow Lake Water Pollution Control Facility.

Ben is currently the City’s project manager for $22M of improvements at the plant, including the Cogeneration Facility Upgrade and Solids Handling Improvements projects.

Matt Sprick
Project Engineer
Carollo Engineers, Inc.

Professional Engineer: OR

BS Mechanical Engineering, Oregon State University, 2006.
MS Chemical Engineering, Oregon State University, 2009.

Matt has been working in the Water/Wastewater Industry for 12 years and for Carollo Engineers, Inc. for 6 of those. His primary focus has been in wastewater treatment, and specifically solids handling. He has been working on projects for the City of Salem since 2012, and is project engineer of the City’s current Cogeneration Facility Upgrade and Solids Handling Improvements projects.

8:45am - 9:30am
ID: 119 / Session 15 part 1: 2
Main Technical Program
Topics: Solids
Keywords: safety, code, standard, biogas, design

Understanding Design Standards and Codes for Biogas Systems

Shayla Allen1, Regina Hanson2, Jim Groman2

1Arcadis U.S., Inc., United States of America; 2Varec Biogas, United States of America;

Our primary focus is to present on the latest best practices and design concepts for biogas capture, transmission, and utilization. We will clarify the most common design standards and legal codes applicable in all states. We will also cover the most recent MOP 8 biogas design recommendations, the ANSI gas generation and utilization codes, and the 10 State (including Ontario, Canada) recommended standards for wastewater facilities. We will also cover NFPA 820, Fire Protection standard for Wastewater Treatment Facilities but focus mainly on applicable items to biogas.

We will cover the following design standards:

A. WEF MOP 8, 2017 Edition Chapter 22 Sludge Stabilization

B. 2015 ANSI/CSA B149.6-15 Code for Digester Gas, Landfill Gas, and Biogas generation and utilization

C. Localized (Regional) Design Standards

1. Recommended Standards for Wastewater Facilities (10-STATE STANDARD) MEMBER STATES AND PROVINCE: ILLINOIS, NEW YORK, INDIANA, OHIO,IOWA, ONTARIO, MICHIGAN, PENNSYLVANIA,MINNESOTA, WISCONSIN, MISSOURI, Chapter 84

2. TR-16 Guides for the Design of Wastewater Treatment Works - published by New England Interstate Water Pollution Control Commission – Seven member states are Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont.

D. NFPA 820 – Standard for Fire Protection in Wastewater Treatment and Collection Facilities

Biogas transmission and handling is often an overlooked aspect of sludge treatment. While discussions on augmenting digestion and converting biogas to energy dominate the industry’s focus, conversations on effectively moving and treating biogas has fallen to the back-burner. New national codes and standards are motivating the industry towards innovative solutions. Clearly understanding of the specifics of these criterion allows Wastewater Treatment Facilities and engineers to excel in creating safer, more efficient designs; thereby shifting biogas from the sidelines to the forefront of technological progress.

Brief Biography and/or Qualifications
Regina Hanson has a Bachelor of Science Degree in Mechanical Engineering from California State University, Los Angeles.
She was with Pacific Valves for five (5) years prior to joining Varec Biogas in October, 1997. Regina has over 20 years of experience in biogas process and well-versed in design codes and standards for biogas system specification. She has extensive knowledge in flaring technologies and EPA regulatory requirements.
She is responsible for the wide range of product offering for Varec Biogas and is involved in product development, research and enhancement.
 
8:00am - 9:30amSession 16 part 1: Secondary Treatment
Session Chair: Heather Stephens, Stantec;
Boise Centre West 110A/110B 
 
8:00am - 8:45am
ID: 108 / Session 16 part 1: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Anammox, Nitritation, Mainstream, deammonification, ANITA Mox

Mainstream ANITA Mox Pilot Testing at Los Angeles County Joint Water Pollution Control Plant

Hong Zhao1, Mitch Johnson1, Michael Liu2, Eric Krikorian2, Tom Knapp2, Matt Edds1

1Veolia Water Technologies, Cary, North Carolina; 2Los Angeles County Sanitation District, Carson, California;

ANITATM Mox process is a single-stage deammonification process utilizing both moving bed biofilm reactor (MBBR) and integrated fixed-film and activated sludge (IFAS) configurations. Implementing the deammonification process for the mainstream wastewater treatment is gaining a lot of interest as it removes nitrogen without requiring organic carbon, which opens the opportunity for WWTPs to achieve energy neutrality.

An eight month pilot test using IFAS ANITA Mox configuration was started in May, 2017 at Los Angeles County’s Joint Water Pollution Plant (JWPCP) for mainstream application. The pilot test has been treating the mixture of primary effluent and secondary effluent from the plant. The flow ratio of the two feed streams was varied to achieve a target ratio of biodegradable COD (bCOD) to ammonia in the feed mixture to the pilot. The ratios used in the pilot test were 0.8, 1.5 and 3.1 on average. Throughout the pilot test, batch tests were conducted using the biofilm carriers from the pilot reactor to measure the anammox activity at the different phases of the pilot test.

The pilot test has demonstrated that intermittent aeration with maintaining effluent residual ammonia and controlling short oxic SRT was capable of repressing nitrite oxidizing bacteria (NOB) while growing adequate ammonia oxidizing bacteria (AOB) and anammox populations in the reactor. Both the continuous flow test and batch activity tests have proved that a bCOD/NH4-N ratio up to 3.1 did not cause a deterioration in anammox activity. However, the pilot system performance such as effluent concentrations, removal efficiencies, surface removal rates, and SVIs are all affected by the C/N ratio. The higher C/N ratio resulted in an increase in TIN removal efficiency from about 65% to 80% and a decrease in the surface removal rate from 1.5 to 1.0 g/m2/d on ammonia and 1.1 to 0.9 g/m2/d on TIN compared to the lower C/N ratio. Furthermore, the higher C/N resulted in a lower ratio of nitrate production out of ammonia removed and a higher SVI compared to the lower C/N ratio.

Brief Biography and/or Qualifications
Matt has been employed with Veolia Water/ Kruger for 8 years as a process engineering. He has worked on process design and troubleshooting for various wastewater treatment processes such as oxidation ditch, biological aerated filter (BAF), Moving Bed Biofilm Reactor (MBBR), Integrated Fix-Film Activated Sludge (IFAS), Membrane Biological Reactor (MBR), and Anammox Processes. He has a B.S. in Chemical Engineering from North Carolina State University, and is a registered Professional Engineer in North Carolina.

8:45am - 9:30am
ID: 245 / Session 16 part 1: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: anammox, nitrogen, sidestream, centrate, startup

Successful Startup of Side Stream Deammonification at Chambers Creek

Adam Klein1, Henryk Melcer1, Amanda Summers2, Amanda Tobin2, Chandler Johnson3

1Brown and Caldwell, United States of America; 2Pierce County; 3World Water Works, Inc.;

The DEMON® process at Chambers Creek completed construction in July 2017. It is designed to treat up to 833 m3/day (220,000 gpd) of dewatering centrate with an ammonia load of 1,450 kg/d (3,200 lb/d). This presentation will discuss the background for selecting this process, design considerations and lessons learned from a 2012 pilot study, and will focus on the approach taken to ensure a successful startup. Results for the first year of operation will be presented.

The system was seeded in early August of 2017, had reached design loading by the end of October, and successfully completed a 30-day performance test in November. Since that time, the system has weathered a holiday shutdown where reactor temperature decreased to 10°C, and is currently operating at its design loading rate. Throughout this entire period, ammonia and total inorganic nitrogen (TIN) removal have been strikingly consistent, averaging 80 and 75 percent, respectively.

The smooth startup of this system is in contrast to several other recent installations in North America. This may be attributed to lessons learned, particularly from a 2012 pilot study. Notable features of this system that sprang out of those lessons include a dedicated pretreatment system consisting of gravity settling with chain and flight removal of both settled and floating solids; and effluent discharge via either a floating decanter, or a discharge hydrocyclone. The discharge hydrocyclone was used extensively during startup due to periods of poor settling.

Brief Biography and/or Qualifications
Adam Klein is a process engineer with 15 years of experience at Brown and Caldwell. He specializes in planning, design, and optimization of activated sludge treatment systems.
 
8:30am - 9:30amUtility Management Committee Meeting
Boise Centre West 140 
9:25am - 10:30amBreak on Exhibit Floor Tuesday Morning

All registrants welcome!

Grand Ballroom - Exhibit Hall - Boise Center West 
10:30am - 12:00pmMobile: Mobile Session on Exhibit Floor
Session Chair: Dick Finger, King County (retired0;
Grand Ballroom - Exhibit Hall - Boise Center West 
 
ID: 334 / Mobile: 1
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Stormwater, Collections Systems and Conveyance, Facility Operations and Maintenance, Solids, Headworks
Keywords: Pump Station, collections, influent, inorganic waste, raw sewage

"Your Pump Stations Aren't Going To Clean Themselves....Or Will They?"

Brent Bailey

Hidrostal Pumps, United States of America;

The new normal of pump stations is deciding how many times you'll need to send the vacuum truck to the pump station to clean out all of the floatable inorganic materials and FOG. Operation and Maintenance costs have escalated to a new level. The "new normal" needs to be, how can this pump station take care of itself. Further, utilization of full pump station capacity increases functionality of collection systems. Low NPSHR can be a life saver for problematic pump stations.

Presentation Summary:

-Self-Cleaning wet well Configurations

-System Components

-Electrical Considerations

-Other Options

-Lessons Learned

Brief Biography and/or Qualifications
Water/Wastewater Treatment professional with over 15 years experience working with engineering, water and wastewater end users to solve industry problems. Extensive background in multiple facets of pump applications including positive displacement and centrifugal.

ID: 323 / Mobile: 2
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Solids
Keywords: Cake, centrifuge, decanter, dewatering, solids

Centrifuge Scroll Design Innovation – New Technology

Alexius Emejom

Flottweg Separations Technology, United States of America;

Decanter centrifuges have been successfully providing excellent solids separation for the municipal wastewater market for over 50 years. The physical principals which govern these systems are simple, increase the gravitational force and the heavier solids will move to the exterior of the machine where they can be collected and removed.

Over the last few decades, various design changes have improved the functionality of these machines. The largest impact to performance has been scroll design, which can improve a centrifuge’s performance in regard to cake dryness, polymer consumption; solids capture efficiency, and energy consumption. This paper will address scroll and bowl design innovations of decanter centrifuges for wastewater dewatering and thickening. It will also introduce the latest centrifuge scroll design innovation which has proven to increase throughput by up to 15 %, increase cake dryness up to 10%, and reduce polymer consumption and power consumption by 20%.

Scroll innovations summary -

The pond depth (length of the clarifying section and drying section) of a decanter centrifuge determines the time that the liquid spends in the decanter; also known as retention time. As the pond depth increases (deep pond), the liquid volume and thus the retention time increases. This improves the clarifying performance. For early advancements, this was a clear and simple adjustment which had a positive impact on biosolids dewatering/thickening. The following image shows the standard pond design.

The next innovation, the double cone design, has been shown to dewater solids more effectively due to the increased pressure exerted on the solids as they are being scrolled to the discharge of the centrifuge. By reducing the available volume at the transition from the cylindrical section to the conical section of the bowl, the solids are subject to increased compressive forces. The double cone design also introduced a baffle disk at the beginning of the drying section. This allows only the driest matter to pass towards the solids outlet. The design also further increased the pond depth, and therefore, the time the liquid spent within the machine. This further improved the dryness of the biosolids.

The latest innovation has proven an increase of machine throughput by up to 15 %, increased cake solids which reduces the volume of biosolids by as much as 10 %, and is saving up to 20 % in energy and polymer consumptions. Named Xelletor, this newest scroll design eliminates the scroll body entirely and replaces it with a tubular space frame system. This maximizes the separation zone volume and improves overall performance.

Further innovations

Centrate energy recovery — A newer innovation in the centrifuge industry is energy recovery when discharging centrate. Redirecting the centrate’s discharge tangentially through the discharge, allows previously wasted energy to be imparted onto the main drive, reducing overall energy consumption by 10 to 20 percent.

Brief Biography and/or Qualifications
Dr. Emejom currently works as the western regional sales manager for a US based German company that manufactures industrial centrifuges, and as an adjunct professor at University of the People. Prior to joining this company, he worked for Hayward Gordon as the regional manager, Watson Marlow Fluid technology as an applications engineer, and was an adjunct faculty at Colorado Technical University for over six years.
Dr. Emejom received his bachelor of engineering degree in Mechanical Engineering from Bayero University, Kano, Nigeria. He went to earn master’s degrees in Project Management, and Executive MBA from Colorado Technical University, USA, and a doctorate degree in Management with concentration in organizational development and change. Dr. Emejom is also a certified project management professional (PMP), and volunteers in Project Management Institute, Orange County chapter in Southern California.

ID: 318 / Mobile: 3
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Wastewater Treatment Processes, Solids, Filtration
Keywords: grit, BOD, solids, removal, TSS

EcoBELT - How Valparaiso, Indiana Optimized its Plant Using a Small-Footprint Primary Rotating Belt Filter

Dalen Crouse, CJ Strain

Nexom, Canada;

There are multiple drivers for rethinking capacity expansion including footprint, level of treatment, and power demand for operations. Real estate in particular can often make or break the feasibility of an effective and economical wastewater system upgrade, and many plant expansions are slowed or come with astronomical costs due to lack of space. In addition, adding capacity is often perceived to mean squeezing higher SOTEs out of secondary aeration or adding another tertiary polishing process. But what if there was a way to reduce loading to the plant instead?

Valparaiso, Indiana, is both a Chicago suburb, located 51 miles from the Willis Tower downtown, and a college town, host to three campuses including Valparaiso University. The town has a lot going for it, and as a result, it needed to expand its wastewater treatment capacity. Valparaiso did so in 2014, integrating the EcoBELT™ rotating belt filter (RBF) instead of building a new clarifier (see Fig. 1).

Rotating belt filtration is becoming an accepted solution to several distinct challenges in wastewater treatment in municipal and industrial applications, but in many cases they are being integrated to gain back space as they require 5% of the footprint of a conventional clarifier with higher levels of primary treatment including grit removal. In new wastewater plants, the rotating belt filters are being designed in place of conventional methods for primary clarification and grit removal. Strategic integration of this technology in new plants can reduce load and footprint to downstream treatment processes.

In existing plants like Valparaiso’s, these filters are being integrated to expand primary clarification and reduce BOD loading to the secondary system by 20-40% and suspended solids by 30-80%. As any engineer or operator will know; removing this loading from the front end improves the performance of secondary and tertiary processes. At Valparaiso, fully-automated hot water wash flushes fats, oils and greases that may accumulate over time, and EcoBELT’s reliable solids dewatering capability also means that loading isn’t just diverted, it falls into a dumpster to be easily disposed of through as it is suitable for landfilling (see Fig. 2).

Rotating belt filters are appealing from a life-cycle cost standpoint as well. Implementation at a fraction of the construction cost of conventional primary tanks is a big up-front savings. Power usage savings both in the primary treatment system as well as in downstream aeration help provide a life-cycle cost comparison of 1/5 that of conventional costs associated with primary settling.

This presentation will draw on the reports by multiple engineering firms around the world who have had an opportunity to study the umbrella of primary treatment technologies, reports that deserve a studious look. As well, the presentation will discuss the case history, design considerations and lessons learned from Valparaiso, Indiana, among others. Idaho engineers and municipalities deserve to know they can drastically increase plant capacity within 5% of the footprint and a fraction of the lifecycle cost of a primary clarifier, and thereby meet their wastewater treatment demands today, tomorrow, and beyond.

Brief Biography and/or Qualifications
Dalen Crouse - Regional Sales Manager for Nexom – a Winnipeg-based company - and provides support to engineering consultants and municipalities that are looking for proven and cost-effective wastewater treatment technologies.

Dalen is a Chemistry graduate of St. Andrews Presbyterian College with 10 years of experience in the water and wastewater treatment industry. Dalen has worked for manufacturers and distributors in business development and technical support roles.

ID: 333 / Mobile: 4
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Wastewater Treatment Processes
Keywords: WAS, Selective Wasting, PAO

InDense - Improved Biomass Settleability Through Gravimetric Sludge Selection

Greg Parks

World Water Works, United States of America;

As plants are looking to upgrade from traditional carbon removal to nutrient removal, there are new leapfrogging approaches to build compact, energy efficient treatment process schemes with improved operational ease. These biological processes can become more compact with the transition of the biomass to a more densified or granular sludge. The densified biomass settles more quickly and therefore the process can carry a higher mixed liquor inventory. Furthermore, this new approach is convenient for retrofits and for improved EBPR. The presentation will provide full-scale examples of several US based installations.

Brief Biography and/or Qualifications
Greg Parks is the Vice President of Sales for World Water Works

ID: 328 / Mobile: 5
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Innovation, Asset Management, Stormwater, Collections Systems and Conveyance, Resiliency, Energy
Keywords: wastewater, pump, efficiency, controls, pump station

Intelligent Wastewater Pumping

Jason Morse

Whitney Equipment, United States of America;

What if your wastewater pump could react to system upsets? What if your wastewater pump could adapt to the current demand and use only the power required to handle the incoming flow? What if your wastewater pump could identify a clog or jam and preemptively clear the debris? What if your wastewater pump could do all of this and so much more without adding complexity to your pump station control panel?

This mobile session will provide insight on where wastewater pumping technology has been, where it is currently, and where we are headed as an industry. Wastewater pumps need to adapt to the ever growing challenges of aging and growing collection systems, and at the same time do more with less power.

We will review three unique issues at three different cities in the Northwest that were address by intelligent pumps:

  1. We don’t know anything about our system requirements or forcemain, but know we need to pump more!
  2. Our old pump has failed and we need something now. Do you have anything that fits?
  3. The city wants to better the reliability and functionality of our pump stations. Can we take it for a test drive?
Brief Biography and/or Qualifications
Jason Morse has worked with water and wastewater pumping systems for 20+ years. Responsibilities include service, service management, electrical, controls, SCADA, sales, and system design assistance. Jason has worked nationally on large and unique pumping systems, and is currently part of the ownership team of a NW Wastewater Equipment Distributor (Whitney Equipment). Jason is currently assisting with service, instrumentation, and day-to-day operations.

ID: 329 / Mobile: 6
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Collections Systems and Conveyance
Keywords: Manhole, Abrasion, Corrosion, Liner

Novel Corrosion-Resistant Manhole Construction Methods

Jed Friesen

Predl Systems North America, Canada;

Today’s durable corrosion resistance in collection, conveyance and treatment systems relies on different existing technologies involving reinforced or unreinforced thermoplastics. While corrosion resistance penetrated the conveyance market, difficulty of installation and cost are still common barriers to adopting these technologies for corrosion-resistant manhole construction. Additionally, in remote, hard to access areas, these technologies are out of reach because of extensive machinery requirements. A first, patent-pending manhole construction approach combines existing proven technologies in wastewater collection and conveyance to make corrosion-resistant manholes readily accessible, both from the ease of construction and the cost perspective. A second alternative manhole construction technique, applicable both to new construction and retrofitting scenarios, allows for durable corrosion-resistant manhole construction in remote areas, with limited mechanized resources, where brick manholes were the only alternative up to this point.

Brief Biography and/or Qualifications
Jed Friesen is the President of Predl Systems NA since 2009. Under his able leadership, the company has forayed into providing several types of thermoplastics liner solutions for protecting concrete manhole structures from corrosion due to H2S gas and abrasion. A Bachelor in Arts from University of British Columbia, Jed has been instrumental in providing innovative techniques towards cost-effective, maintenance-free and durable Manhole structures. One of his many noteworthy contributions to the wastewater Industry has been the Hybrid PVC Manhole System that combines the merits of concrete and PVC Pipe and is getting wide acceptability throughout North America.

ID: 320 / Mobile: 7
Mobile Sessions on Exhibit Floor Tuesday Morning
Topics: Wastewater Treatment Processes, Facility Operations and Maintenance
Keywords: thermoplastic pipe, welding, butt fusion, socket fusion, electrofusion, piping systems

Thermoplastic Joining Methods: Demonstration of Socket and Butt Fusion

Alex Gambino

Asahi/America, Inc., United States of America;

This hands-on demonstration and discussion is ideal for maintenance personnel, operators, engineers, and management who make decisions on installation methods for chemical and water pipelines.

Introduction (5 minutes)

  • Asahi/America, Inc. is a leading manufacturer of thermoplastic valves, pipe & fitting since early 1970’s.
  • Alex Gambino is a master trainer for socket, butt, infrared, and electrofusion welding of thermoplastics.
  • Asahi is highlighting single and double contained piping systems for safe chemical transport that meets OSHA and EPA guidelines.

Discussion (15 minutes)

  • General applications for thermoplastics
  • Joining method overview
    • Mechanical: Threaded, flanges
    • Thermofusion: Socket, butt, electrofusion
  • Demonstration of fusion welding including what materials and size range can be welded
    • Socket fusion demo using hand socket welder
    • Butt fusion demo using benchtop welder
  • Practical limitations of each method
  • Specifying with confidence: what standards & protocols should be included

Closing Discussion

  • Questions and answers, and other available resources

Handout: 1 double sided page with material overview, welding types, third party resources for specifiers.

Brief Biography and/or Qualifications
Alex Gambino is the Business Development Manager (BDM) for Asahi/America’s industrial and environmental piping systems. Alex has been with Asahi/America since 2007 in a variety of positions within Asahi’s engineering department. He holds a Bachelor of Science degree from Rochester Institute of Technology in mechanical engineering technology, and a master of business administration from Northeastern University. Alex is a member of ASME where he volunteers on the Non-metallic Pressure Piping System Standard (NPPS) and B31.3 Process Piping committees. Alex is Located in Sacramento, CA.
 
10:30am - 12:00pmSession 09 part 2: Leadership/Resiliency
Session Chair: Shannon Ostendorff, Lonza;
Boise Centre East 420B 
 
10:30am - 11:15am
ID: 220 / Session 09 part 2: 1
Main Technical Program
Topics: Resiliency
Keywords: Utility, Management, Retention, Disaster, Operations

West Point Treatment Plant Independent Assessment

Courtney O'Neill1, Beverley Stinson1, Robert Waddle2

1AECOM, United States of America; 2King County Wastewater Treatment Division; , ,

On February 9, 2017 during heavy rainfall in the Seattle area, West Point Treatment Plant (WPTP) was operating at peak hydraulic capacity, when a partial interruption of power supply occurred. The ensuing cascade of events caused several elements of the treatment plant to fail, culminating in flooding of WPTP and the bypass of an estimated 240 million gallons of stormwater mixed with untreated sewage into Puget Sound.

In the aftermath of this incident, the King County Council commissioned AECOM to perform an independent assessment. The primary objectives of the study were to perform an independent review of the incident; assess the causes and consequences of failure; review response actions taken by King County Wastewater Treatment Division (WTD); and recommend next steps for developing preventive strategies, practices, and infrastructure upgrades to avoid a recurrence of a similar incident in the future. The project process facilitated open discussions with King County WTD staff that led to an honest assessment of opportunities to increase plant, worker, and environmental safety.

One of the major findings was that WPTP requires a higher level of operational integration to manage interdependencies. To address this finding, WTD developed a new system called Life Safety Management. This approach uses a thorough systematic evaluation of plant systems in terms of function, performance and safety. This approach improves vertical and horizontal communications regarding plant risks, provides better documentation of decisions, and results in stricter levels of maintenance.

This presentation will summarize the contributing factors that led to the eventual flooding of WPTP, but it will mainly focus on the collaborative process that was used to work with WTD staff to identify other potential failure mechanisms and risk factors that should be addressed, including operational changes and implementation of the Life Safety Management Process.

Brief Biography and/or Qualifications
Robert Waddle- Division operations manager at the West Point Treatment Plant in Seattle
Courtney O'Neill- Water Resource Planner and Water Market Sector Lead at AECOM in Seattle
Dr. Beverley Stinson- Vice president and the Global Wastewater Practice leader for AECOM. She also serves as the director of Applied Research & Innovation.

11:15am - 12:00pm
ID: 287 / Session 09 part 2: 2
Main Technical Program
Topics: Resiliency
Keywords: Resiliency, Reliability, Redundancy

Resiliency, Reliability and Redundancy for Northwest Wastewater Treatment Utilities

Patrick Roe

HDR Engineering, United States of America;

With the temporary failure of a large northwest wastewater treatment plant in early 2017, many utility owners and operators have been asking: what should we be doing to prevent a catastrophic failure at our facility? This presentation outlines recommended steps to improve wastewater treatment utility resiliency, reliability and redundancy. Seven steps are proposed, starting with a global assessment considering external factors, working inwards towards more detailed facility considerations.

1. Utility Resiliency Planning: The first step is to assess external factors over which the utility has limited control. In the northwest, this includes chronic and acute stresses such as earthquakes, volcanic eruptions, flooding, and drought.

2. Operations, Safety and Security Planning: The second step is to review utility operation. Identify unusual wastewater characteristics, such as peak wet weather events, or the presence of toxics materials. Define resources such as power supply and chemicals necessary for treatment. Assess how wastewater residuals are transported from the treatment plant. Security vulnerability should also be assessed.

3. Staffing and Succession Planning: The retirement of senior operators is a concern for most utilities. In some cases, the skills of senior operators may be compensating for inadequate facility reliability and redundancy. Utilities should have a succession plan for training new operators.

4. Life and Health Safety Code Review: Fire codes define protection from explosion and flammability hazards. The facility should be assessed to confirm compliance with safety codes and whether hazards may exist.

5. Reliability and Redundancy Analysis: EPA and state criteria define minimum standards for treatment system redundancy and reliability, particularly mechanical, electrical, and control systems.

6. Asset Condition Assessment: Finally, an asset condition assessment should be performed to identify individual assets that present the greatest risks due to the condition and

7. Putting it All Together: The last step is to define means to mitigate the risks. In some cases, revisions to operating procedures or additional safety precautions is adequate. In other cases, capital improvements may be required.

Brief Biography and/or Qualifications
Pat Roe is the wastewater treatment program manager in HDR's Bellevue, WA office. He has 38 years of experience as a consulting engineer.
 
10:30am - 12:00pmSession 10 part 2: Collections Systems
Session Chair: Jeff Schmidt, Jacobs;
Boise Centre East 410A 
 
10:30am - 11:15am
ID: 284 / Session 10 part 2: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: alternatives analysis, hydraulics, risk management, trenchless

Alternatives Analysis for King County’s Mercer Enatai Project: Going from 945 Alternatives to 1

James Chae1, Kevin Goss2, Sibel Yildiz3, Grizelda Sarria2

1Jacobs Engineering, United States of America; 2Tetra Tech; 3King County WTD; ,

King County’s North Mercer Island and Enatai Interceptor sewers have been providing regional service to Mercer Island and southwest Bellevue for over forty-five years and are reaching the end of their useful lives. The existing system consists of a 8.0 mgd pump station, 3.5 miles of 16” to 27” pipeline, including a long in-water siphon, pipelines through parks and wetlands, and a gravity in-water, pile-supported pipeline along the shoreline beneath existing homeowners’ docks. Pipeline and pump station alternatives were evaluated in a three-stage evaluation process from June 2014 to January 2016, and the project is currently in final design with construction starting in 2020.

This presentation will provide an overview of the alternatives analysis framework that included a 3-stage alternatives evaluation process including development of evaluation criteria, qualitative and numerical criteria rating, risk analysis, and costs that led to evaluating many pipeline alignments and pump station upgrades and ultimate selection of the single best apparent alternative. Considerations during the alternatives analysis process included:

• Defining Level of Technical Analyses: Evaluating complex hydraulic constraints for the alignments was necessary to identify early on technical fatal flaws, including potential solids deposition, low flows and velocities in siphon systems, and surcharge limitations along the system due to existing local City connections.

• Construction Methods: Evaluation of complex construction methods including in-water open-cut construction along East Channel, trenchless construction methods for up to 3000 lineal feet, and CIPP relining methods for alternatives.

• Pump Station impacts due to pipeline hydraulics: Integrating pump station upgrades as a result of increased flow and total dynamic head associated with the various pipeline alignment alternatives.

Brief Biography and/or Qualifications
James Chae is a senior project manager, and has over 23 years of experience with Jacobs Engineering. He specializes in design and construction management of pipelines, pump stations, and CSO facilities.

11:15am - 12:00pm
ID: 229 / Session 10 part 2: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: tunnel, pump station, headworks

Tunneling toward the Future: Lessons Learned from Hawaii

Bruce Ball

Brown and Caldwell, United States of America;

The City and County of Honolulu (CCH) recently completed construction of a new $400 million large-diameter wastewater conveyance and storage tunnel (Tunnel) and influent pump station to connect the Kaneohe Wastewater Pretreatment Facility (KWPTF) to the Kailua Regional Wastewater Treatment Plant (KRWWTP). The Tunnel project resulted in the decommissioning and abandonment of the existing KWPTF effluent pump station (KIPS) and its force main system, influent pump station, pretreatment equipment, and Kaneohe Bay South Wastewater Pump Station 1.

The project involved the following key improvements:

• Tunnel Influent Pump Station (TIPS): The wastewater conveyed by the tunnel to KRWWTP is pumped up to the new headworks facility at KRWWTP. The new 45 mgd capacity TIPS facility was constructed in the Tunnel launching shaft.

• New KRWWTP Influent Pump Station (Mini-KIPS): The new 15 mgd capacity Mini-KIPS was constructed to pump base flows from the Kailua sewer basin to the new headworks. During peak flows, wastewater is diverted to the Tunnel via a weir overflow system. The Mini-KIPS facility was integrated into the TIPS facility substructure.

• New Headworks Facility: A new 45 mgd headworks facility was constructed, which provides screening and grit removal processes prior to conveying flow to the existing primary clarifiers.

• Electrical Distribution Building: The project centralized the main power distribution system and standby power system for the entire KRWWTP.

• New Odor Control Facilities: A two-stage odor system provides foul air treatment for the TIPS, Mini-KIPS, and headworks facilities. A second single-stage odor system provides foul air treatment in the enclosed Headworks building.

• Kailua and Kaneohe Diversion Structures: Diversion structures were constructed at the KRWWTP and KWPTF to divert flows to the tunnel and TIPS facilities and provide initial screening of wastewater flows.

The presentation will provide an overview of the entire project and discuss lessons learned from construction.

Brief Biography and/or Qualifications
Bruce Ball is a managing engineer with Brown and Caldwell. He has 26 years of engineering experience and has worked on six projects involving conveyance tunnels and deep pumps station. Bruce was the design manager for the Kailua-Kaneohe tunnel and pump station project on Oahu.
 
10:30am - 12:00pmSession 11 part 2: Planning
Session Chair: Corinne DeLeon, Seattle Public Utilities;
Boise Centre East 410B 
 
10:30am - 11:15am
ID: 181 / Session 11 part 2: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: performance targets, integrated system plan, H&H model, equity

Setting Clear Performance Targets to Guide Smart Utility Investments

Colleen Doten

Seattle Public Utilities, United States of America;

Like many other utilities, Seattle Public Utilities (SPU)’s drainage and wastewater capital improvement program is dominated by regulatory driven projects, leaving very limited resources for valued services that are not currently regulated. SPU is embarking on the development of an Integrated System Plan (ISP) of its drainage and wastewater systems, that considers an expanded set of issues beyond just regulatory mandates. The goal of the ISP is to direct investment in SPU systems while providing the greatest community value through multiple benefits.

To support the ISP development, we have been conducting technical analysis to characterize our wastewater system to identify our highest priority issues. SPU has refined and calibrated its city-wide wastewater hydrologic and hydraulic (H&H) models. We established performance parameters (that could be evaluated with our models) to determine where the system may adversely impact our customers. These parameters and the H&H models enabled SPU to develop clear performance targets for its wastewater system - a first for SPU and often a challenge for many utilities. Locations where performance targets are not met will be carried forward into the ISP, where recommendations to address these shortcomings will be developed within a framework that considers problems in the drainage system, the condition and criticality of existing assets, social and environmental factors, existing and future regulatory mandates, and the opportunity to achieve multiple benefits.

At the end of this presentation the attendee will leave with:

- An understanding of how H&H modeling outputs inform drainage and wastewater system planning

- Considerations when developing and selecting performance targets for a wastewater system

- How H&H modeling can help drive outreach activities to support identification of highest priority issues

Brief Biography and/or Qualifications
Colleen Doten is a water resources engineer with Seattle Public Utilities (SPU). She joined SPU as a part of the drainage and wastewater line of business in August 2016. She is the technical modeling lead for SPU’s wastewater system analysis and drainage system analysis. These projects are developing performance targets to inform problem identification for SPU’s planning. She is also the lead for CSO reduction options analysis for several basins. Prior to joining SPU, she worked as a consulting engineer for 15 years assisting clients with developing basin plans, and stormwater comprehensive plans, to guide their investments. She has conducted hydrologic and hydraulic (H&H) modeling of urban systems including combined and separated sanitary systems, and stormwater collection systems, to support planning efforts.

11:15am - 12:00pm
ID: 213 / Session 11 part 2: 2
Main Technical Program
Topics: Planning
Keywords: Systems, Planning, Equity, Community, Drainage

Intergrated Systems Planning: Centering Community and Embedding Equity

Ben Marre, Steve Hamai, Vicky Raya, Sara Cubillos

Seattle Public Utilities, United States of America; ,

Seattle Public Utilities (SPU) is undertaking an ambitious effort to integrate planning for its drainage and wastewater systems. The purpose of the Drainage and Wastewater (DWW) Integrated Planning effort is to plan future infrastructure investments that provide the greatest community value. The effort will integrate planning across drainage and wastewater systems, emphasize engagement, and focus on leveraging effective partnerships to meet Seattle's infrastructure challenges. This planning effort and its products are a major step toward making SPU a community-centered utility.

To become a community-centered utility, SPU is focusing on six primary goals: achieving excellence in core service delivery, increasing affordability and accountability, improving investment value, enhancing public health and environment, ensuring service and racial equity and inclusion, and expanding impact through strong partnerships.

Two phases of the planning effort that support SPU’s goal to become community-centered are the DWW Vision Plan and the Integrated System Plan. The DWW Vision Plan will provide the goals, objectives, guiding principles, and measures of success that are specific to the DWW Line of Business and guide long-range planning and investment. The Drainage DWW Integrated Planning effort is a comprehensive effort to plan future actions to address system needs while providing the greatest community value. This effort will integrate planning for SPU’s drainage and wastewater systems and strive to achieve multiple community benefits.

To develop a plan that supports the goal of ensuring racial equity and inclusion, SPU has incorporated a racial equity lens into the development of this effort from the beginning by engaging SPU social equity subject matter experts early in the process. This session will highlight an integrated approach to planning that centers community and embeds racial and service equity at all stages of development.

Brief Biography and/or Qualifications
Vicky Raya is a Service Equity Strategic Advisor for Seattle Public Utilities. Ms. Raya has worked for over 15 years with diverse communities locally and nationally facilitating complex project collaboration with public, private and community-based agencies, institutions and organizations.

Ben Marre, Drainage and Waste Water Planning and Program Management Director, Seattle Public Utilities

Steve Hamai, Senior Strategic Advisor for Equity Planning and Analysis, Seattle Public Utilities
 
10:30am - 12:00pmSession 12 part 2: Energy Optimization
Session Chair: Anthony Perreira, City of Boise;
Boise Centre East 410C 
 
10:30am - 11:15am
ID: 127 / Session 12 part 2: 1
Main Technical Program
Topics: Resource Management, Facility Operations and Maintenance
Keywords: Energy Efficiency & Management, Treatment Mixing

Saving Energy and Money Through Better Wastewater Treatment Plant Mixing

Michele Braas

Xylem, United States of America;

In the past, mixers have been given little consideration in the grand design of in wastewater facilities. Mixers were designed for worst case scenarios, whether flow or loading, and very little other thought was given. With an increased focus on energy management and optimization, mixers present an opportunity for both optimized treatment and energy savings. Many engineers and operators have come to recognize that overmixing in order to cover the worst case scenario not only wastes energy, but provides sub-optimal process results.

Flygt has been conducting a number of adaptive mixing pilot projects around North America. The purpose of the pilot studies was to determine the actual energy needed to provide mixing and the amount of energy savings that can be seen when mixers are “turned down”. The studies took into consideration the effectiveness of mixing as determined by TSS levels, along with power required to maintain a completely mixed tank.

For this talk we will focus on two studies. The first where larger mixers were able to be replaced with smaller mixers, saving more the $100,000 in annual energy costs. The second study focuses on the use of a variable speed mixer and the energy needed to maintain complete mixing within a treatment tank.

In addition to the studies, the basics on mixing will be presented. We will discuss mixing applications, the measurement and importance of thrust, and the measurement and magnitude of energy requirements for mixing.

We will wrap up the presentation by sharing with the audience a process that they can use to perform a desktop study to determine if there mixers may be oversized and/or if varying the speed of their mixers could save them energy.

Brief Biography and/or Qualifications
Ms. Braas is an Environmental Engineer with Xylem’s Flygt Mixer Group. While she currently focuses on mixers and mixing applications, she has more than 20 years of experience in designing wastewater and drinking water systems. Her work has included performance and design of BNR evaluations.

11:15am - 12:00pm
ID: 254 / Session 12 part 2: 2
Main Technical Program
Topics: Collections Systems and Conveyance, Energy
Keywords: energy, combined sewage overflow, odor control, operation

Energy and Sustainable Operation for CSO Treatment Plants: Design Optimization Strategies for Intermittent Use Facilities

Jeffrey Zahller1, Karl Sutton1, Christina Kapoi2, Carl Grodnik3

1HDR, United States of America; 2Jacobs, United States of America; 3King County Wastewater Treatment Division, United States of America;

Traditional wastewater treatment plants have an energy consumption pattern that is often dominated by the aeration demands with pumping, dewatering, and disinfection also potentially high contributors to the energy footprint. However, as combined sewage overflow (CSO) satellite plants have come into greater use, these assumptions about energy use do not apply. CSO facilities are usually intermittently operated, utilizing physical/chemical treatment systems as opposed to biological. Often, CSO facilities do not include explicit solids handling or dewatering operations. Despite typically having lower nameplate electrical ratings, heating, ventilation, air conditioning (HVAC) and odor control (OC) systems can dominate plant energy use (greater than 50 percent during most of the year) due to their more continuous annual operation in comparison with the intermittent operation of the wastewater treatment process systems.

Specifically, CSO facilities present a unique opportunity for HVAC and OC energy savings due to:

1. Intermittent operation (odors and wastewater are not present all the time)

2. Lower overall odors and corrosion (wastewater is more dilute with higher oxygen levels) that can make OC operation more flexible

3. Minimal occupancy and reduced heating/cooling needs

4. Unique applications of standard energy code criteria

Following a series of targeted design standards, which center around the unique operational characteristics of an intermittent CSO plant, can lead to significant energy savings in comparison with following traditional design methodologies utilized for standard continuous operation plants.

The King County Wastewater Treatment Division (WTD), which serves the greater Seattle area, initiated a review of their current CSO design guidelines with the intent of refining the guidance for energy efficient design. The work detailed in this paper is intended to outline the key issues related to energy efficient CSO treatment plant designs with attention to HVAC and OC, including an example application to a new CSO facility currently under construction.

Brief Biography and/or Qualifications
Jeff Zahller has been a process engineer working in the research, design and construction of both water and wastewater treatment facilities for 14 years. He served as the Chair of the PNCWA Odor and Air Quality Committee from 2015-2017. His focuses are in chemical feed systems, primary clarification, odor control, pumping systems and hydraulics, digester gas handling, secondary treatment, disinfection, and corrosion control. He holds a BS in Chemical Engineering from Montana State University, an MSE from the Environmental Engineering department at the University of Washington, and is a registered Chemical Engineer in Washington State.
 
10:30am - 12:00pmSession 13 part 2: Disinfection
Session Chair: Amy Dammarell, HDR;
Boise Centre West 120A 
 
10:30am - 11:15am
ID: 277 / Session 13 part 2: 1
Main Technical Program
Topics: Innovation
Keywords: UV advanced oxidation, taste and odor, trace contaminants

UV Advanced Oxidation for Water Treatment - Applications and Considerations

Harold Wright

Carollo Engineers, United States of America;

UV disinfection has been used across the Pacific Northwest for more than a decade for wastewater, reuse, and drinking water disinfection. More recently, UV technologies are being used at locations across the United States for the reduction of contaminants, including seasonal taste and odor (T&O) control with surface waters and the continuous reduction of pollutants with ground waters and potable reuse.

This presentation will describe how UV AOP reduces contaminants such as NDMA when they directly absorb UV light (photolysis) and contaminants such as 1,4-dioxane and T&O compounds (e.g., geosmin) when they react with hydroxyl radicals formed when UV light is absorbed by oxidants such a hydrogen peroxide and chlorine that are added to the process flow upstream of the reactor. The impact of water quality parameters, such as pH, alkalinity, TOC, nitrite, and bromide, on the generation and scavenging of hydroxyl radicals, and hence the efficiency of the UV AOP process will be described with reference to three water types, namely a surface water treated by conventional filtration, a groundwater, and an effluent from reverse osmosis. The example will show how water quality impacts UV dose and oxidant requirements for contaminant reduction, and how those requirements can be optimized with a given water quality to reduce UV AOP capital and O&M costs. The presentation will describe and compare three options for process monitoring and control, namely approaches based on power consumption (EEO), approaches based on theoretical UV dose calculations, and approaches based on full-scale UV validation, that are currently used by UV vendors. The presentation will conclude by describing new advances in UV dose monitoring and control that will reduce UV AOP costs, making the process more attractive for drinking water utilities.

Brief Biography and/or Qualifications
Harold is Carollo's Chief Technologist for UV disinfection and AOP. He was a primary author for the USEPA's UV Disinfection Guidance Manual, founded the Portland UV Validation Test Facility, and was the principal investigator for ten UV projects for the Water Research Foundation. He is currently working on UV AOP projects for T&O control and potable reuse.

11:15am - 12:00pm
ID: 300 / Session 13 part 2: 2
Main Technical Program
Topics: Innovation
Keywords: UV, LCA, Case study, DBPs, Viruses

Taking Credit: Case Study of a UV System to Expand Applications of Virus Inactivation

Tyler Kane

University New Hampshire, United States of America;

Public water systems must provide 4-log inactivation of adenovirus to comply with EPA’s LT2ESWTR and GWR while also complying with the Stage-2 D/DBPR. A UV dose of 186 mJ/cm2 meets this requirement, but increases energy use, capital and operation costs, and causes technical challenges for validating UV performance. The result: many water systems resort to solely using chemical disinfectants, increasing their risk of DBP formation. This dose required is based off the action spectrum of adenovirus. Surrogate microbes like MS2 are used in place of adenovirus in UV reactor validation because they are harmless and have a similar action spectrum. Yet recent research shows that adenovirus is more sensitive to low wavelengths (LWs) in the 200nm – 240nm range than MS2, suggesting adenovirus inactivation can be accomplished more efficiently than its surrogate suggested. Those LWs, however, must be accurately monitored to take credit for their inactivation of adenovirus.

The Bethlehem, NH water treatment plant was chosen to host a pilot study. The plant has been outfitted with a Trojan UVSwift 4L12 reactor, equipped with innovative LW sensors. The system PLC monitors flow, UVT, sensor responses, and power level. This data is used to analyze system trends and determine the ability of LW sensors to record LWs reliably. LW sensor performance was studied with 5 statistical analyses that measured the precision and accuracy of the sensors. The analyses determined that the LW sensors have good precision. Models used to estimate LW sensor accuracy suggested there may be secondary response peaks, but further research is recommended to determine they respond to UVI at the correct wavelength region. A LCA was conducted to examine on the implications of taking credit for LWs. This includes a comparison of DBP formation, public health risks, and energy use tradeoffs between a UV scenario and a chlorination scenario.

Brief Biography and/or Qualifications
Tyler is a recent graduate of the University of New Hampshire’s MS program in civil/environmental engineering. His research was advised by Dr. James Malley, whom Tyler worked for throughout his undergraduate career. Tyler has led student projects, helped create student organizations, completed coursework on advanced water treatment topics, and earned a minor in Political Science.
 
10:30am - 12:00pmSession 14 part 2: Stormwater
Session Chair: Kristi Steiner, Clean Water Services;
Boise Centre West 120B 
 
10:30am - 11:15am
ID: 305 / Session 14 part 2: 1
Main Technical Program
Topics: Stormwater, Collections Systems and Conveyance
Keywords: triple bottom line, Level of Service, green infrastructure, stormwater

Getting to Recommendations from the San Jose Citywide Storm Sewer Master Plan

Anne Symonds1, Michael Mak2

1AECOM, United States of America; 2Silvestrum Climate Associates;

AECOM and the City of San Jose have been busy finishing model development, calibration and system performance valuation on the Citywide Storm Sewer Master Plan for San Jose. Areas with modeled flooding were identified as deficiencies and potential CIP projects identified.

Three scenarios which addressed all system deficiencies were developed:

• Scenario 1 was comprised of conveyance or grey projects

• Scenario 2 included green infrastructure plus grey projects

• Scenario 2 included storage and some grey projects

The scenarios were evaluated using a triple bottom line approach. Sensitivity analyses were used to evaluate other potential system changes such as increased rainfall due to climate change and the impact of relaxation of system design criteria.

The total project costs to bring the entire system up to the Level of Service (LOS) of no surface flooding in a 10-year 24-hour storm was well above the City’s potential appetite for capital spending so a project prioritization methodology was developed.

The recommended high priority projects reflect the problem areas identified by the City’s Department of Transportation staff, as well as areas with significant modeled flooding in the 3-year 24-hour storm. The high priority projects will be further assessed to confirm their order of priority and project elements.

The impact of green infrastructure and potential storage elements will be considered during further planning for individual projects. The recommended high priority projects will reduce significantly the storm system problem areas and modeled flooding but also reflect a significant capital investment for the City. These projects, spread out over a 20 year implementation, will increase annual capital budget by about five times. The City will address adoption of the CIP and funding as further planning work is completed.

Brief Biography and/or Qualifications
Ms. Symonds has 40 years of progressive civil engineering experience, including both project and contract management of studies, preliminary and final design, plans and specifications, cost estimating, and construction administration. She has been a project manager for projects with fees ranging from $5,000 to as large as $12 million, and in management roles in multi-million dollar programs for combined sewer overflow storage, wastewater treatment plants, pump stations, and other public facilities. Anne has designed new and rehabilitated pump stations, both submersible and wet pit/dry pit type, ranging up to capacities of 300 mgd. Her sanitary and wastewater expertise ranges from evaluations of existing system capacity to design of preliminary, primary, and secondary treatment facilities, including biosolids treatment and handling. Anne's civil engineering experience also includes utility relocation, storm drain system design, and grading and paving design.

11:15am - 12:00pm
ID: 303 / Session 14 part 2: 2
Main Technical Program
Topics: Stormwater, Resource Management
Keywords: Climate Change, Hydromodification, HSPF

Hydromodification Impacts of Climate Change

Stephen Blanton

AECOM, United States of America;

Continuous simulation has become a more common stormwater modeling tool as the focus of surface water assessment has evolved from the design storm and resulting peak flow toward developing a better understanding of the range of flows that impact stream conveyance, riparian habitat and water availability.

Climate change impacts on the hydrology of a watershed have become an important question for everyone who is concerned with stream flows, aquatic species, and water availability. Having a modeling approach to assess potential impacts from the many various scenarios reported better allows decision makers an opportunity to review a range of possible future impacts to infrastructure and natural channels.

HSPF has been in an important hydrologic model over the years as it provides the ability to perform long term continuous simulations with customizable input and output parameters. The Climate Assessment Tools within the EPA BASINS suite of models provides the user to create climate change scenarios based on changes to meteorological data files. Using calibrated HSPF models multiple climate change scenario were modeled. The resulting time series flow data was used to assess the potential impacts on stream health related to floodplain inundation, streambank erosion, and conveyance capacity.

This presentation is intended to provide an over view of the modeling approach and the potential uses for regulators concerned with how existing infrastructure and natural systems may be impacted by changes in the volume and timing of precipitation.

Brief Biography and/or Qualifications
Mr. Blanton has been conducting H&H studies in the PNW for over 20 years focusing on the hydrologic impacts of land use changes on natural systems and stream health.
 
10:30am - 12:00pmSession 15 part 2: Solids
Session Chair: Caitlin Hubbard, Lake Stevens Sewer District;
Boise Centre East 430 
 
10:30am - 11:15am
ID: 124 / Session 15 part 2: 1
Main Technical Program
Topics: Solids
Keywords: polymer, activation, dewatering, improvement, savings

Impact of Upgraded Polymer Activation on Sludge Dewatering: Case Studies

Yong Kim1, Brian Hawley2

1UGSI Solutions, Inc; 2Fairfield-Suisun Sewer District;

A well-designed polymer system is the key for achieving the optimum performance in dewatering process. Design failure in activation stage of polymer mixing may not only result in higher cost but compromise the program to more serious failure. This paper illustrates how to maximize the polymer value with various experimental data and case studies at water and wastewater treatment plants.

The quality of dilution water has a serious impact on the quality of polymer solution. Among various parameters of dilution water that affect polymer activation, it is most critical to understand the effect of residual chlorine with the increasing trend of utilizing treated effluent from wastewater plant for polymer mixing,

Benefits of two-stage mixing in polymer activation are shown with laboratory data and a trial at Neshaminy Water Treatment Plant in Philadelphia area. The facility operates two belt filter presses with two emulsion polymer systems in dewatering carbon-alum sludge. An upgraded polymer system was installed and run side-by-side with the existing unit for three month test in 2016. It demonstrated a reduction of polymer usage in excess of 35% while yielding to the same processing volume and 4% drier cake solids.

Non-uniform mixing energy distribution in dry polymer mixing tank is detrimental to polymer solution because a considerable amount of polymer chains are broken during extended mixing time. Mixing intensity distribution is related to the ratio of impeller to tank diameter - an impeller with longer diameter generates more uniform mixing intensity. Dry polymer system developed based on this principle was installed at the Fairfield-Suisun Sewer District in northern California. The plant realized 42% polymer savings after one year operation of new dry polymer system and the increase of sludge throughput by 18% in 2016.

It was also observed that the aging time of dry polymer solution can be significantly reduced or even eliminated by applying very-high energy mixing up to G-value of 15,000 per sec during the initial wetting stage. It can contribute to the enhancement of process design by cutting down the batching cycle of dry polymer mixing by two hour or more.

Brief Biography and/or Qualifications
Dr. Yong Kim is Technical Director at UGSI Solutions, Inc. in Vineland, NJ. His technical interest includes fluid mixing in turbulence, solid-liquid separation, water and wastewater disinfection. He was previously employed by USFilter and Siemens Water Technologies. As a PhD Chemical Engineer, he has authored a book entitled “Coagulants and Flocculants: Theory and Practice” and published over 30 technical papers. Six US patents have been issued to his credit.

11:15am - 12:00pm
ID: 154 / Session 15 part 2: 2
Main Technical Program
Topics: Solids
Keywords: biogas-upgrading, media, H2S, siloxanes

Biogas Upgrading - Efficiency through New Technologies

Adam Klaas

Unison Solutions, Inc., United States of America;

Biogas is no longer consider waste, but a powerful tool in our nations drive to become more sustainable and shift away from higher energy prices we have seen in the past. To make each systems economics better, old technologies are being improved and providing more cost effective solutions.

We will discuss a case study of a new H2S removal media which has extended the media life considerably at several wastewater treatment plants and brought down the cost per pound of Sulfur removed when compared to traditional H2S removal methods. We will also discuss another case study which is using a new H2S Removal Powder in the digester to lower O&M Costs. Case studies utilizing media for the removal of volatile organic compounds and siloxanes will also be discussed.

As WWTP’s become more efficient and paybacks for CHP projects are becoming extended, the biogas industry has seen an increased interest in Biogas to Vehicle Fuel and Biogas to Pipeline Injection projects. Several new technologies are available for small scale and large scale pipeline projects. New to the US market is a chemical adsorption biogas upgrading process, captures over 99.9% of the available biomethane in raw biogas, maximizing renewable gas yields and revenues with a very low operational cost. The pipeline quality renewable natural gas can be compressed for vehicle fuel, grid injection, or liquefied for renewable LNG.

Whether it’s a small scale direct use system or injection into the existing natural gas pipeline, renewable identification numbers (RIN’s) and new renewable fuel standard regulations, make these projects more cost efficient than ever. We’ll discuss these programs as well as case studies of current facilities that have been operating for several years.

Brief Biography and/or Qualifications
Adam Klaas as a B.S. degree in Mechanical Engineering from the University of Wisconsin-Platteville. He has worked in the biogas conditioning and upgrading industry for over 12 years designing systems and testing new technologies. Adam’s knowledge of biogas conditioning technology is unsurpassed in this industry and he truly enjoys helping sites make the most from their biogas.
 
10:30am - 12:00pmSession 16 part 2: Secondary Treatment
Session Chair: Heather Stephens, Stantec;
Boise Centre West 110A/110B 
 
10:30am - 11:15am
ID: 166 / Session 16 part 2: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Oxidation ditches, denitrification, process control

Same Ditch, New Twist: Retrofitting Oxidation Ditches to Achieve Simultaneous Nitrification and Denitrification

Andy Smith

West Yost Associates, United States of America;

The target audience for the session will be owners, operators and/or engineering consultants tasked with operating, evaluating and/or improving POTWs with oxidation ditches and stringent nitrogen limits in existing or anticipated NPDES permits. The emphasis of the session will be that simultaneous nitrification and denitrification (SND) can be a cost-effective alternative to more infrastructure-intensive methods of achieving denitrification. The session will include approximately five modules: 1) basic principles of nitrification and denitrification; 2) principles of SND in oxidation ditches; 3) instruments and process control strategies for SND systems; 4) case studies for two POTWs with oxidation ditches recently modified to provide reliable SND [Galt, CA and Jackson, CA]; and 5) lessons learned. The hoped-for conclusion by session attendees will be that many oxidation ditch systems can be modified to reliably provide SND at a fraction of the cost required to construct a separate anoxic basin or modify existing ditches to mimic conventional aeration basin systems. Audience engagement will be encouraged by soliciting questions, feedback, anecdotal considerations, etc. at various points during the session.

Brief Biography and/or Qualifications
Andy Smith is registered civil engineer in California and Nevada, and has over 13 years of experience in the planning, design and construction of water and wastewater treatment facilities throughout Northern California.

11:15am - 12:00pm
ID: 120 / Session 16 part 2: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Nitrate removal, groundwater, biological treatment, biocatalyst

Operating Data and Lessons Learned from Sunny Slope Water Company’s Microvi Nitrate Removal System

Ali Dorri2, Kirsten Sims1

1WesTech Engineering, United States of America; 2Microvi Biotechnologies, United States of America;

Elevated and increasing nitrate levels in groundwater are of significant concern to water utilities across the US that depend on groundwater as a source of drinking water. Physical chemical methods, such as ion exchange and reverse osmosis, can reduce nitrate levels in the treated water but these technologies are expensive to operate in part due to the need to dispose of a concentrated waste stream. Conventional biological systems remove nitrate by biologically converting it to nitrogen gas, however conventional biological systems have long start-up times, are susceptible to process upsets and produce sludge streams that require management.

Sunny Slope Water Company has installed a 300 gpm biological treatment system for removal of nitrate developed by Microvi Biotechnologies. The nitrate removal system uses a single species of a specifically selected, naturally occurring organism to convert nitrate to nitrogen gas. The organisms are irreversible retained in polymeric composite structures, referred to as biocatalysts, which are designed to create an ideal microenvironment for the organism. This creates a high density of very efficient denitrifying organisms within the reactor, resulting in fast start-up time, high rates of reaction and process resilience to conditions that would upset conventional biological processes. Further, the organisms are in a metabolically active, non-growing state which means they produce no excess biomass and hence there is no waste biological sludge stream to be managed.

The system was installed later in 2016 and a permit was issued by California Division of Drinking Water in May 2017. While initial performance of the system met all permit conditions, there were a few engineering challenges that had to be overcome to optimize the performance of the system. These included the carbon source used to drive the denitrification process, the addition of nutrient and conditioning of the bioreactor effluent to optimize filter performance.

Since these optimization measures have been implemented performance of the system has been excellent, with consistently low levels of effluent nitrate and consistently low and stable transmembrane pressure in the UF system. This presentation will describe the lessons learned and present performance data from the system.

Brief Biography and/or Qualifications
Ali has over 12 years of experience in water and wastewater and joined Microvi to commercialize and scale several of Microvi’s technologies. He overlooks Microvi’s water and wastewater technologies and projects in North America. He has been actively conducting workshops and presenting nitrate treatment solutions both in California and internationally. Ali is the Director of Business Development and product manager for Microvi’s Denitrovi product line.
 
12:00pm - 1:10pmLunch—Tuesday Business Luncheon

Complete Packages or Tuesday Lunheon ticket required

Boise Centre East 400 
1:15pm - 2:15pmStormwater Committee Meeting
Boise Centre West 140 
1:15pm - 2:45pmSession 17 part 1: Resiliency
Session Chair: Rick Shanley, Clean Water Services;
Boise Centre West 120A 
 
1:15pm - 2:00pm
ID: 283 / Session 17 part 1: 1
Main Technical Program
Topics: Resiliency
Keywords: climate change, precipitation, modeling, combined sewer overflow

Climate Changed Precipitation for use in Collection System Modeling

Tyler Jantzen1, John Phillips2, Brent Robinson3, Kristen Matsumura4

1Jacobs; 2King County Wastewater Treatment Division; 3Seattle Public Utilities; 4Herrera;

One of the most formidable challenges facing the clean water industry over the next 50 years is climate change. Climate change will impact all facets of our industry. Planning today for future climate conditions is essential – especially when considering large and expensive infrastructure designed to operate well into the future. However, limited understanding of likely future climate makes planning difficult, especially when considering impacts of changing precipitation patterns.

This presentation describes and compares two methods developed for and used by King County and Seattle Public Utilities to create future climate precipitation time series scenarios for use in combined sewer overflow (CSO) modeling. Both methods were designed specifically to produce long term (38-year) high temporal resolution (5-minute) time series required for CSO modeling. Both methods utilize a variable scaling technique, where scaling factors were applied to observed precipitation. The scaling factor magnitude was dependent on the magnitude of observed precipitation to account for a common conclusion of climate change science that intense events will increase more than less intense events. More intense observed precipitation was scaled by a larger scaling factor.

Key differences between the two methods include the input climate model: one used a single high resolution regional climate model, while the other used an ensemble of many coarser resolution downscaled global climate models. Another key difference is the treatment of future climate uncertainty: one method produced a single set of future climate results, while the other produced a range of possible future climate results.

Both methods produce future time series suitable for CSO modeling, and were applied at numerous precipitation gauges. The product of these efforts were future climate 5-minute time series that could be used by hydrologic and hydraulic models to evaluate the impact that climate change may have on sizing of future facilities.

Brief Biography and/or Qualifications
Mr. Jantzen is a water resources engineer with Jacobs’ Buildings, Infrastructure and Advanced Facilities line of business in Bellevue, Washington. He has more than 10 years of experience leading climate adaptation and resilience projects for water and transportation clients across the United States and internationally. His work reaches across numerous water resources related topics, including: hydrologic and hydraulic modeling, flood risk mapping and management, stream restoration, dam-break analysis, stormwater planning, roadway drainage design, and combined sewer system analysis. He received a Bachelors in Civil Engineering from Gonzaga University, and a Masters in Water Resources Engineering from the University of Texas at Austin.

2:00pm - 2:45pm
ID: 129 / Session 17 part 1: 2
Main Technical Program
Topics: Resiliency
Keywords: CSO, Climate Change, Modeling, Uncertainty

Right Sizing Combined Sewer Systems for Climate Change

Brent Robinson

Seattle Public Utilities;

Making a decision in the face of uncertainty is one of the most important responsibilities of utility management because it balances the competing interests of meeting performance objectives, minimizing utility rates, and maximizing infrastructure value. Achieving Washington State’s combined sewer overflow (CSO) performance standard is a formidable task given the uncertainty associated with both annual weather patterns and the long term climate change signal. In the past decade, these sources of planning uncertainty have proven to be strong drivers of CSO facility size and costs. SPU’s existing decision process for CSO facility sizing necessitated an update to better navigate those uncertainties. SPU updated both its approach to modeling the effects of climate change and its decision framework for choosing facility sizes for planning and design to better ensure compliance with the CSO standard for future CSO facilities. This presentation will provide an overview of SPU’s climate change and uncertainty simulation approaches as well as the newly developed sizing decision framework as applied on two CSO basins that are currently in their planning phases. The presentation will discuss the factors that influence a decision on facility sizing such as interagency coordination, community involvement, siting constraints, system functionality and other opportunities as they intersect with the temporal aspects of climate change and system uncertainty. The end result of this body of work is a vision for CSO compliance that allows SPU to best optimize infrastructure now and long term while balancing the competing interests of risk and cost minimization.

Brief Biography and/or Qualifications
Brent Robinson is a licensed Professional Engineer and serves as a Line of Business representative within the Planning and Program Management division at Seattle Public Utilities (SPU) where he leads Options Analyses phases of SPU's CSO projects. Prior to coming to SPU, Brent was a hydrologic and hydraulic modeling consultant and focused on SPU's CSO basins through the development of SPU's Long Term Control Plan (LTCP). Now at SPU, Brent helps to implement the LTCP and navigate the host of uncertainties inherent to large capital planning efforts. In his free time, Brent enjoys swimming in Lake Washington when CSOs are inactive.
 
1:15pm - 2:45pmSession 18 part 1: Collections Systems
Session Chair: Yang Zhang, City of Portland;
Boise Centre East 410A 
 
1:15pm - 2:00pm
ID: 117 / Session 18 part 1: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Inflow and Infiltration, Asset renewal, CIPP lining, wet weather, cost effectiveness

CIPP Lining of Sanitary Sewers for I/I Reduction and Asset Renewal

Ken Miller1, Bob Jacobsen2

1Lakehaven Water and Sewer District; 2Brown and Caldwell, United States of America; ,

The Lakehaven Water and Sewer District (LWSD) has been experiencing issues with significant flow increases during wet weather, causing basement backups and overflows, and approaching the treatment plant’s capacity. To pinpoint the source of the wet weather flows to the separated sanitary sewer system, LWSD began a 2-year flow monitoring program, followed by detailed hydraulic modeling. This work concluded that the sewer basin flowing to Pump Station 5 had the most severe inflow and infiltration (I/I).

Following closed-circuit television (CCTV) inspection and refined flow monitoring of the Pump Station 5 basin (single-family homes), the team concluded that the major source of wet weather flow was infiltration, not inflow. The CCTV inspection indicated that most infiltration was on private property at leaking joints from the 1960s-vintage concrete pipes.

LWSD decided to complete cured-in-place-pipe (CIPP) lining of the sanitary sewers to reduce wet weather flows and to help begin efforts to renew sewer assets. A 21-acre pilot project area (86 houses) was developed to determine the cost and effectiveness of CIPP lining LWSD-owned mainlines and privately held laterals (from the main to the house, at no cost to owners). A public outreach campaign obtained voluntary approval for 84 of the 86 houses.

CIPP lining efforts started in late October 2017 and ended in February 2018. Ultraviolet-cured lining was used to rehabilitate the mainline pipes. Traditional steam-cured and ambient-cured lining was used for the lateral lining. Where laterals connected to the mainlines, T-liners were used to provide a full seal. Cleanouts where installed with the VAC-A-TEE method on all laterals to facilitate lateral lining. The project was completed on schedule and on budget (approximately $1.3 million). Flow monitoring and modeling is continuing and will be evaluated after the next wet weather season. Pending its effectiveness, LWSD will expand this program to jointly reduce wet weather flows and to renew the sewer assets.

Brief Biography and/or Qualifications
Ken Miller: Ken is the Engineering manager at Lakehaven Water and Sewer District. He has over 30 years of experience in utility design and construction. He received his undergraduate degree from Saint Martin’s University and his master’s degree from the University of Washington in civil engineering.

Bob Jacobsen: Bob is a principal engineer with Brown and Caldwell. He has 17 years of experience in underground utilities with emphasis on condition and I/I assessment of sanitary sewers. He received his undergraduate degree from Virginia Tech and his master’s degree from Johns Hopkins University.

2:00pm - 2:45pm
ID: 207 / Session 18 part 1: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: pump station, pressure transient, collection system, maintenance

What is Transient Surge and Why Do I Care? A Story of Analysis, Mitigation, and Maintenance

Adam Crafts1, Shad Roundy1, Vanessa Johnson2

1Murraysmith, United States of America; 2Clark Regional Wastewater District; , ,

Pressure transients occur every day in pressure pipelines under normal operating conditions. This phenomenon can be difficult to predict and often goes unnoticed without causing visible damage or system failure. Because of this, the risk of damage from pressure transients can be underestimated and misunderstood. However, there have been several documented cases where pressures transients have been identified as the primary cause of pipe collapse and sewage spills. Mitigating pressure transient in pipelines can be expensive and requires a commitment to maintaining special valves or tanks. It can be difficult to know when transient mitigation is needed, what is an acceptable level of risk, what options are available, and how to ensure the system will operate as intended.

This presentation will provide an overview on the physics behind pressure transients, system characteristics that are red flags, methods and examples of surge analysis, mitigation options, design considerations such as placement and materials selection, and maintenance implications for inspecting and cleaning valves. Two case studies from recent pump station projects will be presented where the design effort analyzed the system for pressure transients, mitigation options were evaluated, and which alternatives were ultimately selected and constructed, and how the system owner ensures the systems are working.

Brief Biography and/or Qualifications
Adam Crafts is a senior engineer and project manager for murraysmith.
Shad Roundy is a senior engineer and hydraulic engineering manager for murraysmith.
Vanessa Johnson is a senior project manager for Clark Regional Wastewater District.
 
1:15pm - 2:45pmSession 19 part 1: Planning
Session Chair: Matthew Gregg, Brown and Caldwell;
Boise Centre East 410B 
 
1:15pm - 2:00pm
ID: 304 / Session 19 part 1: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: Planning, Strategy, Prioritization, Flooding, Stormwater

Stretching Capital Dollars through Prioritization and Synergies in San Francisco

Vi Lam1, Dan Donahue1, Mira Chokshi2

1AECOM, United States of America; 2San Francisco Public Utilities Commission;

Municipalities and agencies must manage competing capital needs within budgets. The ability to prioritize improvements as well as identify and track opportunities to address multiple needs allows capital funding to be stretched, and ultimately, provide a higher return for each capital dollar spent. The San Francisco Public Utilities Commission (SFPUC) completed development of a prioritization approach and synergies-identification framework in the Collection System Capital Improvement Strategy Plan, which documents how evaluations are used to prioritize system-wide project needs in light of the criticality of the need and ratepayer affordability.

SFPUC owns and operates a combined sewer system to collect, transport and treat wastewater. The SFPUC’s Sewer System Improvement Program (SSIP) is a program to modernize the aging, earthquake-vulnerable wastewater facilities. Under the SSIP, 40% of the $6.9 billion program budget has been proposed to plan, identify, and build collection system upgrades through 2032. These upgrades will improve collection system condition and reliability, improve stormwater management to reduce flooding, protect assets against sea level rise, increase flexibility for wet weather operations, and protect water quality. As a case study, this paper will focus on prioritizing projects with the goal of improving stormwater management to reduce flooding.

The SSIP has a level of service (LOS) goal of controlling and managing flows from a storm of a three-hour duration that delivers 1.3 inches of rain. The LOS drives the SFPUC to manage flooding from an LOS storm in areas that are considered to have high and very high property risk.

The SFPUC was able to identify the top performing flood resilience projects and integrate green infrastructure projects as part of the flood management strategy. By implementing a framework to identify and track synergies between planned sewer enlargements for flood resilience with planned sewer rehab and replacement for collection system reliability, the SFPUC is able to maximize their investments and achieve endorsement of the plan by the Commission.

Brief Biography and/or Qualifications
Vi is a professionally licensed Engineer and Project Manager, and has been wearing both hats as a Program Management Consultant on San Francisco Public Utilities Commission's $7 Billion Sewer System Improvement Program for the past 5 years. She has been a part of AECOM for nearly a decade, planning and designing in all fields related to wastewater such as capital planning, process engineering and asset management. Vi holds a Bachelor of Applied Science in Chemical Engineering, minoring in Environmental Engineering, from the University of Toronto.

2:00pm - 2:45pm
ID: 225 / Session 19 part 1: 2
Main Technical Program
Topics: Planning
Keywords: Growth, Planning, Projections, Modeling, Improvement

Planning for the Next Generation: Flow Projections for the Downtown Tacoma Growth

Aurelie Nabonnand1, Rod Rossi2, Ed Wicklein1, Teresa Dressler2, Karen Bartlett2, Craig Francis2

1Carollo Engineers, Inc; 2City of Tacoma; ,

For the past few decades, the Pacific Northwest has experienced rapid and sustained population growth. To accommodate this growth, cities in the area have built new housing developments, such as high-rise condominiums.

Planning for these new developments has posed a challenge for many communities. For the City of Tacoma (City), that challenge is due to the rapid rise in wastewater sanitary flow these new high-rise developments are partly responsible for. Micro hotels, large mixed-use towers, and breweries are only a few of the projects currently proposed for this core area.

In the next 15 years, significant vertical developments will increase the residential population by five times and employee growth by three times. According to preliminary predictions, average dry weather sewer flows could increase from 1.3 mgd to 10 times that amount at build-out.

Like many downtown areas, the City’s existing sewer infrastructure consists of a complex network of small pipes between 4 to 30 inches in diameter, with most between 8 and 10 inches. However, understanding the sensitivity of the magnitude, timing and location of hydraulic impact from a myriad of future development scenarios on the existing sanitary infrastructure becomes significantly more complex to identify and prioritize system improvements.

To help identify and prioritize improvements, Carollo developed and calibrated an all-pipe detailed model. Projected flows were then routed through the hydraulic model during a design storm to predict future capacity requirements for significant future growth.

This presentation discusses the City's process for projecting flows and understanding the impacts of vertical commercial redevelopment on the collection system’s capacity. This process is as follows:

• Develop baseline current sanitary flows and wet weather flows through extensive flow monitoring.

• Blend traditional planning metrics and empirical historical data to develop planning flows.

• Predict capacity limitations for a series of development scenarios.

• Present the methodology to identify and prioritize system improvements.

Brief Biography and/or Qualifications
Aurelie Nabonnand is a staff engineer at Carollo Engineers, Inc for the past five years. She received her MS. in Water, Wastewater, and Environmental Engineering from ENGEES Engineering School in France. Her focus is hydraulic modeling and master planning for wastewater, water, and stormwater projects. She has developed new hydraulic models using City’ system-wide GIS data as well as implemented several extensive model updates. Ms Nabonnand is also experienced with the calibration and validation of hydraulic models, and the implementation of Capital Improvement Projects. She has worked on more than thirty modeling projects in Washington, Oregon, Oklahoma, and California. Recent projects include developing the updated wastewater hydraulic model for the City of Tacoma, WA, and building and calibrating the new wastewater hydraulic model for the Cities of Medford, OR and West Linn, OR.
 
1:15pm - 2:45pmSession 20 part 1: Aeration
Session Chair: David Kopchynski, Parametrix;
Boise Centre East 410C 
 
1:15pm - 2:00pm
ID: 280 / Session 20 part 1: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: aeration basin, process optimization

Aeration Basin Optimization At King County's Brightwater Treatment Plant

Henryk Melcer1, Carol Nelson2, Adam Klein1, Andy Strehler2, Rebecca Gauff2

1Brown and Caldwell, United States of America; 2King County, United States of America;

The aeration basins in the membrane bioreactor at King County’s Brightwater Treatment Facility have experienced some operational difficulties that are being addressed by the ongoing process optimization investigation. A detailed wastewater characterization has been carried out, the data from which were used to calibrate the BioWin biological process simulator. A detailed assessment of the blower operation, aeration control system and air delivery system has been conducted in concert with oxygen transfer testing using off-gas measurement technology. The calibrated model is being used to evaluate alternative operational strategies in the activated sludge system to determine the optimum way of eliminating the need to supplement primary effluent with alkalinity. These include increasing the proportion of aeration volume assigned to denitrification, adding side stream nitrogen removal process technology, and using the operational mode of simultaneous nitrification-denitrification. It was reasoned that side stream treatment would remove approximately 25 percent of influent ammonia, which would reduce oxygen and alkalinity for nitrification by an equivalent amount, thereby reducing the demand for denitrification. The assessment of the blower operation and aeration control system revealed an uneven distribution of air to the three aeration basins and along each basin. It suggested that adding automated control valves to the air drop legs would improve air distribution and save a significant amount of energy. While the installation of sprays in the aeration basin has been reasonably effective in controlling foam, alternative ways of minimizing the generation of foam in the aeration basin are also under way. Results from these parallel investigations will be presented.

Brief Biography and/or Qualifications
Henryk Melcer is Brown and Caldwell's senior process engineer for the northwest business unit. He has conducted process analysis of biological treatment processes for the 25 years he has served with Brown and Caldwell. He has worked extensively with membrane bioreactors, aeration systems and biological nutrient removal processes.

2:00pm - 2:45pm
ID: 222 / Session 20 part 1: 2
Main Technical Program
Topics: Aeration
Keywords: Anammox, Aeration, Blowers

Retrofitting Main Stream Anammox – Challenges for Aeration Blowers

John Koch

HDR, United States of America;

A key to the Anammox process is the instantaneous interruption of the air supply and then the immediate resumption of the air to the reactor basins. Most blowers cannot tolerate this 5 to 10 minute instantaneous ON/OFF sequence. Almost all larger (>10 MGD) activated sludge secondary treatment plants constructed during the 1970’s and 1980’s use multiple stage centrifugal blowers. These blowers were typically designed for peak air requirements for the 20 year planning period. Many if not all of these treatment plants had aeration systems that were over designed at startup and some of them still are over designed for today’s loads.

One facility, has four 1250 HP, 16,600 scfm 13.3 psi machines that can only be realistically throttled to 12,000 scfm. Converting to main stream Anammox where the average air demand is 6,300 scfm and then switching between reactors in the air on/off cycle presents the following issues:

• Original blower design point rise to surge was 1.3 psi exacerbating the pressure spike when switching instantaneously between reactors.

• Original blowers have a surge point air flow that is twice the Anammox process average demand.

• Using the original aeration blowers has resulted in wasting over 8,000 scfm.

• Original “startup” blow-off valves are now modulated to maintain an air pressure set point to Anammox of 12.5 psi.

Preliminary engineering report evaluation has determined that several smaller high speed turbo blowers that have the capability to start 30+ times per hour will:

• Reduce energy consumption

• Satisfy the pressure surges inherent to switching air ON and OFF to the aeration basins

• Increase system reliability

• Reduce maintenance

• Provide a stable Anammox process.

While the Anammox process has reduced air demand requirements, maintaining the multi-stage blowers has been problematic due to their age and operating near their surge point.

Brief Biography and/or Qualifications
John has over 50 years of varied experience in planning, design, construction, commissioning and trouble shooting of water and wastewater facilities in the United Stated. He is a Senior Project Manager and Vice President for HDR for over half his career and is a Board Certified Environmental Engineer by the American Academy of Environmental Engineers and Scientists.
 
1:15pm - 2:45pmSession 21 part 1: Capital and Delivery
Session Chair: Dan Laffitte, Carolllo Engineers;
Boise Centre West 120B 
 
1:15pm - 2:00pm
ID: 292 / Session 21 part 1: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: design-build, wastewater retrofit

Fast Progressive Design Build Delivery in Southern Oregon

Michelle Green1, Gary Brelinski2

1Jacobs, United States of America; 2City of Grants Pass, Oregon; ,

The Progressive Design Build rehabilitation of the City of Grants Pass, OR presented significant schedule and budget challenges that demanded a unified team. The team will discuss the particulars of how an integrated and cohesive approach was utilized to meet an aggressive project schedule, manage a challenging bidding and market environment, and maximize project value.

The Phase 2 Upgrade of the Grants Pass Water Restoration Plant (WRP) provides a critical investment to improve treatment reliability and resiliency of the facility. Key to project success are completion of new treatment systems prior to the 2018 wet season, demonstrated value for investment, and trouble-free project execution.

The City of Grants Pass selected CH2M as their design-builder and NTP was issued in mid December 2016. Presenters will discuss specific approaches the team utilized to facilitate teamwork and decisiveness during the Phase 1 effort - critical to development of bidding documents for the $23.5M project in just 5 months.

The project budget was challenged due to a large list of facility needs coupled with a challenging bidding market. Presenters will provide an overview of the Progressive Design-Build delivery model as well as discuss what tools were utilized to manage the project budget and share lessons learned. This will include a specific discussion on how to deliver a successful retrofit project in the context of an alternative delivery model, as well as feature some of the innovative aspects of the technical solutions.

Brief Biography and/or Qualifications
Michelle Green is a Senior Project Manager with 25 years of experience. Gary Brelinski is the Plant Superintendent of the Grants Pass Water Reclamation Plant.

2:00pm - 2:45pm
ID: 281 / Session 21 part 1: 2
Main Technical Program
Topics: Capital and Delivery
Keywords: Innovation, Wastewater Treatment, Affordability, Asset Management, SCADA

The “3R” Approach to Affordable Upgrades at the Sweet Home, Oregon WWTP

Greg Springman1, Preston Van Meter2, Austin Rambin2, Jason Flowers2

1City of Sweet Home, Oregon; 2Murraysmith, Inc.; , , ,

A decade ago, when faced with the prospect of an aging and leaking collection system, the City of Sweet Home (City) deployed collection system rehabilitation technologies to reduce peak WWTP flows nearly 50% from 22 MGD to 12 MGD. Following on the heels of this successful program, the City is continuing to embrace a rehabilitation ethic as the focus shifts to WWTP upgrades to provide reliable treatment capacity to treat peak flows while providing for community growth.

In partnership with Murraysmith, the City has embraced a 3R approach of Reusing, Re-purposing and Rehabilitating existing assets to cut the cost of WWTP upgrades in half, while continuing to focus on rehabilitation of the City’s collection system to further reduce peak wastewater flows.

The estimated $20M-$25M WWTP improvements will include rehabilitation and capacity expansion of the existing Influent Pump Station; a new headworks with grit removal or primary filtration; new primary clarifiers if primary filtration is not used in the headworks; aeration basin upgrades to increase capacity through plug flow modifications with nutrient removal in the summer and contact stabilization in the winter; rehabilitation of three existing secondary clarifiers and one new clarifier; new RAS/WAS Building; re-purposing the existing aerobic digester into an anaerobic digester; re-purposing the existing CCB for installation of UV disinfection; new sludge storage basin; new dewatering facility; and other site improvements.

The presentation will provide an overview of the City’s collection system rehabilitation efforts maintain peak flows over time while providing for community growth, planned WWTP upgrades with a focus on improving plant operation and maintenance, plant automation upgrades and new plantwide SCADA system incorporating tablet computers and financing strategies for small communities to maintain reasonable rates when faced with a major facility expansion project.

Brief Biography and/or Qualifications
Greg Springman is the Public Works Director for the City of Sweet Home who has over 30 years of experience as a manager for public utilities in Southern California and Oregon.

Preston Van Meter is a Principal Engineer in the Portland office of Murraysmith who specializes in planning, design and construction of wastewater treatment and reuse projects.

Austin Rambin is a Senior Engineer in the Portland office of Murraysmith who has 16 years of experience in the planning, design and construction of water and wastewater facilities.

Jason Flowers, PE, PhD is Lead Wastewater Technologist for Murraysmith who specializes in biological process design and nutrient removal for wastewater treatment facilities.
 
1:15pm - 2:45pmSession 22 part 1: Resource Management
Session Chair: Ana Arango Rodriguez, Jacobs;
Boise Centre East 430 
 
1:15pm - 2:00pm
ID: 121 / Session 22 part 1: 1
Main Technical Program
Topics: Resource Management
Keywords: resource recovery, modelling

Visioning Place-based Wastewater Resource Recovery: the Twin Falls WRRF

Casey Bryant

University of Idaho, United States of America;

In 2012, WEF adopted a new name for wastewater treatment plants (WWTPs) – Water Resource Recovery Facilities (WRRFs) – with a vision to change the industry from an emphasis on treatment to one that maximizes recovery of valuable resources present in the wastewater. For example, resources that can be recovered or produced from wastewater include biogas, which can be utilized via combined heat and power (CHP) systems to generate electricity; fertilizer-grade nitrogen and phosphorus via struvite crystallization; reclaimed water for non-potable and potentially potable uses; fertilizer-grade biosolids; and potentially bioplastics. Many reports and peer-reviewed publications have mused about the concept of resource recovery, and specific processes have been evaluated that could be employed to produce specific products. However, little-to-no attention has been given to the analysis and evaluation of real, place-based WRRF scenarios. Real WRRF examples and scenarios that present and analyze environmental and economic impacts/benefits are needed. This study does exactly that, re-envisioning the City of Twin Falls, Idaho WWTP as a WRRF. Twin Falls has several proximate industrial waste streams that could be beneficially leveraged for enhanced resource recovery - from such industries as Chobani, Glanbia, and Lamb Weston, as well as dairy operations, among others. Instead of pre-treating these waste streams, bypassing the resource recovery opportunity, this study integrates these resource streams into a re-envisioned Twin Falls WRRF.

To facilitate development of WRRF scenarios, in this study we employed the SUMO© model (Dynamita Process Modeling) to evaluate and assess resource recovery alternatives leveraging proximate waste streams. A base model of the existing Twin Falls WWTP was developed and calibrated, utilizing facility operational data. Environmental life cycle assessment was performed using the EPA TRACI model to assess the sustainability of each alternative. The overall goal was to determine which combination of resource recovery technologies and proximate waste streams would be optimal for the Twin Falls WRRF. This presentation will discuss the results from this study.

Brief Biography and/or Qualifications
Casey is a graduate student at the University of Idaho working on his master’s under Dr. Erik Coats. He is expected to graduate in Spring 2019.

2:00pm - 2:45pm
ID: 122 / Session 22 part 1: 2
Main Technical Program
Topics: Resource Management
Keywords: resource, recovery, circular, economy, algae

Resource Recovery and How Algae Makes the Circular Economy Work - A Case Study

Garrett Pallo, Jordan Lind, Brian Richichi

Clearas Water Recovery;

Problem Statement: While the food-waste-to-energy process is filled with promise, there are significant waste products produced that offset many of the benefits.

Approach: The role of algae in the global circular economy of food waste to energy is rapidly growing and expanding. Each year, more than 1.3 billion tons of food is wasted or landfilled each year. This is equal to approximately 1/3 of all food produced. In the United States, we are only recovering approximately 3% of the total food that is wasted to landfills.

Anaerobic digestion is making a resurgence because of the tremendous potential to produce high-quality and valuable biogas from food and other waste materials. However, while the anaerobic digester technology is effective at producing gas, it has the downside of producing a significant amount of waste products including high-strength nutrient liquid waste, solid waste (cake), and carbon dioxide.

Algae-based wastewater treatment technologies, such as developed by Clearas Water Recovery, has become an “enabling” technology to the emerging and significant circular economy arising from the food-waste-to-energy market. Technologies, such as Advanced Biological Nutrient Recovery (ABNR), recovers the waste products from the anaerobic digester process and creates a valuable algal biomass coproduct. This coproduct is desirable and valuable to several industries including soil amendments, food and feed products, bioplastics, biofuels, and specialty chemical markets.

Results/Conclusions: This presentation will focus on a specific case study near Salt Lake City Utah where this circular economy is being made a reality. The combination of food-waste-to-energy, wastewater treatment, advanced biological nutrient recovery (algae), water recovery and reuse, and carbon dioxide recovery and sequestration are all at work at a single facility. The South Davis Sanitary District is proving that any wastewater agency can take advantage of these technologies and recovery resources in a cost effective manner.

Brief Biography and/or Qualifications
As a member of the initial core team, Brian’s involvement with CLEARAS began in 2009 where he supervised daily operation of a 50,000 GPD Advanced Biological Nutrient Recovery (ABNR™) facility.

Brian is now part of the commercial development team at CLEARAS and is currently focused on delivering wastewater treatment solutions across the United States. He manages regional representative relationships, customer outreach, and technology education initiatives for regulators and engineers. Brian also provides technical analysis and design support for ABNR installations, optimizing CLEARAS' technoeconomic model to meet the needs of facility operators and their engineering partners.

Brian received his B.S. in Business Administration with a Minor in Economics from Arizona State University. In his spare time, he enjoys mountain biking, fly fishing, deer and elk hunting, and playing golf.
 
1:15pm - 2:45pmSession 23 part 1: Untapped Experts: Construction Managers
Session Chair: Shawn Wilson, City of Boise;
Session Chair: Corey Pence, City of Boise;

As the industry evolves, construction management professionals are playing an increasing role in as a key partner in a project’s success.  This series of topics will demonstrate how important it is to leverage this expertise in our industry.

Learning Objectives: This series of topics is intended to show why partnering is important, how we are navigating today’s most important challenges, and what the future might look like in construction.  Data and technology are challenging our traditional relationships with the Owner-A/E-Contractor triangle and embracing the skillsets of each can work to strategically target risks and invite the future to lead to better outcomes for projects.

Who Should Attend: This series would be most beneficial to owners, engineering project managers, and construction professionals or folks that are responsible for managing risk and can influence change management and lead the industry into the future.

Boise Centre East 420B 
 
1:15pm - 2:15pm
ID: 309 / Session 23 part 1: 1
Main Technical Program
Topics: Planning, Capital and Delivery
Keywords: construction

Construction Management 1: The Results Are In! Collaboration Is a Key Risk Mitigation Tool.

Shawn Wilson1, Corey Pence1, Rob Bousfield1, Tyler Resnick2

1City of Boise; 2McAlvain Companies, Inc.; , , ,

Data has confirmed that contract mechanisms that are more collaborative provide a risk mitigation tool and reduce claims and disputes. The intent of this topic is to discuss experiences with collaborative contract mechanisms and to gain insight on why the panel thinks collaboration may or may not help avoid construction risks.

Moderated Panel Session: Each panel speaker will get 8-10 minutes to present on the topic, followed by a moderated 10 to 15-minute question and answer session with the audience. Total time 40 minutes per topic. The panel includes an owner, construction manager, and engineer. The speakers are professionals with extensive experience in a variety of contract mechanisms that work in the water and wastewater industry.

Brief Biography and/or Qualifications
Panel

Moderator: Corey Pence
Corey Pence is a risk manager with a significant focus on contracts and construction. Corey oversees the production and execution of all substantial contracts within a City with a focus on sharing risks appropriately between parties
.
Owner: Rob Bousfield
Rob has been in the role of owner project manager for much of his 30-year career. Projects have ranged from small tenant improvements to fire stations, libraries, and multi-million wastewater treatment plant expansions. He has extensive experience with private and public construction using varying contract mechanisms including design-bid-build, construction manager, and construction manager at-risk approaches.

Construction Manager: Tyler Resnick
As a Construction Manager and General Contractor, Tyler Resnick has successfully completed numerous Water and Infrastructure projects. He has experience as an early preconstruction collaborator and construction manager on interesting water, urban and infrastructure projects in the Treasure Valley such as the Dixie Drain Phosphorus Removal Facility, Grove Plaza Renovation, and the Lander Street Water Renewal Facility Improvements Program. Throughout his career, he has had an emphasis on planning, handling and treating of water and wastewater infrastructure that drives his passion for responsible development. His focus on good planning and sustainable solutions has been reinforced through sitting on the City of Boise Green Building Code Review Board and the City of Boise Building Code Advisory Board.

Engineer: Sean Wilson
Shawn Wilson is a professional engineer with over 20 years of experience working in the private sector and the public sector leading strategic planning, and implementing the design and construction of complex infrastructure projects. Shawn has experience working with industrial clients under design-build models, and significant public sector clients working under design-build, construction manager at risk, and design bid build contract mechanisms. His variety of contract mechanisms and broad experience in different sectors gives him a unique prospective on construction management.

2:15pm - 3:15pm
ID: 310 / Session 23 part 1: 2
Main Technical Program
Topics: Planning, Capital and Delivery
Keywords: construction

Construction Management 2: Why Did the Project Bids Come in So High? Navigating Limited Market Resources.

Shawn Wilson1, Corey Pence1, Rob Bousfield1, Tyler Resnick2

1City of Boise; 2McAlvain Companies, Inc.; , , ,

The one downside of the booming economy, limited resources! Materials and labor are at a premium and it is reflected in the cost of construction. This discussion will be focused on understanding different methods of navigating the challenges we are facing in the construction market and how construction managers play a key role for successful projects.

Moderated Panel Session: Each panel speaker will get 8-10 minutes to present on the topic, followed by a moderated 10 to 15-minute question and answer session with the audience. Total time 40 minutes per topic. The panel includes an owner, construction manager, and engineer. The speakers are professionals with extensive experience in a variety of contract mechanisms that work in the water and wastewater industry.

Brief Biography and/or Qualifications
Panel

Moderator: Corey Pence
Corey Pence is a risk manager with a significant focus on contracts and construction. Corey oversees the production and execution of all substantial contracts within a City with a focus on sharing risks appropriately between parties
.
Owner: Rob Bousfield
Rob has been in the role of owner project manager for much of his 30-year career. Projects have ranged from small tenant improvements to fire stations, libraries, and multi-million wastewater treatment plant expansions. He has extensive experience with private and public construction using varying contract mechanisms including design-bid-build, construction manager, and construction manager at-risk approaches.

Construction Manager: Tyler Resnick
As a Construction Manager and General Contractor, Tyler Resnick has successfully completed numerous Water and Infrastructure projects. He has experience as an early preconstruction collaborator and construction manager on interesting water, urban and infrastructure projects in the Treasure Valley such as the Dixie Drain Phosphorus Removal Facility, Grove Plaza Renovation, and the Lander Street Water Renewal Facility Improvements Program. Throughout his career, he has had an emphasis on planning, handling and treating of water and wastewater infrastructure that drives his passion for responsible development. His focus on good planning and sustainable solutions has been reinforced through sitting on the City of Boise Green Building Code Review Board and the City of Boise Building Code Advisory Board.

Engineer: Sean Wilson
Shawn Wilson is a professional engineer with over 20 years of experience working in the private sector and the public sector leading strategic planning, and implementing the design and construction of complex infrastructure projects. Shawn has experience working with industrial clients under design-build models, and significant public sector clients working under design-build, construction manager at risk, and design bid build contract mechanisms. His variety of contract mechanisms and broad experience in different sectors gives him a unique prospective on construction management.
 
1:15pm - 2:45pmSession 24 part 1: Secondary Treatment
Session Chair: Rick Butler, King County;
Boise Centre West 110A/110B 
 
1:15pm - 2:00pm
ID: 169 / Session 24 part 1: 1
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: PONDUS TCHP, viscosity, enhanced biogas production, dewaterability

Case study of a thermochemical hydrolysis installation in Kenosha Water Resource Recovery Facility

Zhongtian Li, Jerod Swanson

Centrisys/CNP, United States of America; ,

Phosphorus removal and recovery from sludge stream in water resource recovery facility (WRRFs) bring multiple benefits including phosphorus recovery, digester and pipes protection, and improvement of sludge dewaterability. This study reports an innovative integrated system for achieving enhanced phosphorus recovery and sludge dewaterability optimization through the combination of brushtie and struvite precipitation. Two processes, namely patented CalPrexTM process and AirPrex® process, are integrated in sludge treatment process. The integrated system achieves higher than 90% reduction of phosphate conc. in dewatering return flow, improves cake solids by 2.7 – 4 percentage points, and most importantly, enhances total phosphorus recovery ratio to the range of 40% - 65%.

The integrated system contains an acid phase digester, a CalPrexTM reactor, an anaerobic digester, an AirPrex reactor, and two dewatering centrifuges. Primary sludge and waste activated sludge (WAS) are treated by acid phase digester with 1.5 - 2.5 days of hydraulic retention time. 60% to 95% of phosphors release is achieved during the acid phase digestion. Acid phase digested sludge is dewatered through a centrifuge. The centrate is then treated by CalPrexTM for brushite (CaHPO4•2H2O) crystallization and precipitation. The phosphorus reduced sludge cake is recombined with a portion of the CalPrex effluent before piping to anaerobic digester. The anaerobically digested sludge is treated through AirPrex®, in which the residual phosphate is crystalized and precipitated as struvite. AirPrex® treated digested sludge is dewatered through a dewatering centrifuge.

The integrated system brings the following benefits for WRRFs. First, the significant reduction of total phosphorus by 40% to 65% in dewatered biosolids is beneficial for biosolids land applications where phosphorus is the limiting factor. Second, the brushite (CaHPO4•2H2O) crystallization is independent of ammonia, which reduces the system complexity by avoiding the return of ammonia from anaerobically digested streams. Third, the kinetics of brushite crystallization is 4-5 times faster than struvite, which dramatically reduces the reactor volume. Forth, the dewaterability of anaerobically digested sludge is optimized by AirPrex® reactor with 2.7 – 4 percentage points increase of cake solids. The integrated system effectively enhances the total phosphorus recovery and optimizes the sludge dewaterability.

Brief Biography and/or Qualifications
Jerod has more than fifteen (20) years of engineering and technical sales experience in the water and wastewater industry, as well as other related industries. Jerod joined Centrisys in 2014 as a Regional Sales Manager. Some of his previous roles include Industrial Regional Sales Manager and Commercial Leader at Parkson Corporation, and International Sales Manager at Aeration Industries. Jerod also served as a Navy Nuclear Engineering Officer for five (5) years prior to entering the private sector. He has a Bachelor’s degree in Mechanical Engineering and an MBA, both from the University of Minnesota.

Li joined Centrisys/CNP in 2016.2 and is the lead developer of pilot test and project commissioning procedures for phosphorous recovery and thermo-chemical hydrolysis process initiatives in North America. Li has nine year of research and working experience in wastewater, water and sludge treatment. He received an M.S. from the University of Nebraska-Lincoln and a Ph.D. from the UCLA in Civil Engineering.

2:00pm - 2:45pm
ID: 268 / Session 24 part 1: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: HPO secondary process, flood recovery, process modeling

From Plant Shutdown to Full Capacity - High Purity Oxygen (HPO) Activated Sludge Process Proved Its Resilience in Flood Recovery

Li Lei1, Robert Waddle2, Eugene Sugita2, Bob Bucher2, David Kelly1

1Jacobs, United States of America; 2King County, WA;

The West Point Treatment Plant (WPTP),WA, is a HPO secondary treatment plant rated to treat 215 mgd maximum monthly flows and 440 mgd peak flows. Following a power failure and subsequent effluent pumping and control system failures during a storm in 2017, the subterranean pipe and equipment galleries were flooded and the entire plant eventually shutdown. The plant managed to quickly return to half of its hydraulic capacity and limited treatment with screening, partial primary treatment, and effluent disinfection. However, the grit removal system, primary sludge pumps, and digester boilers were severely damaged, disabling the solids stabilization process. To minimize waste activated sludge (WAS) production and protect the secondary process from degraded primary sedimentation performance and lack of grit removal, flows to the secondary process were essentially ceased for a couple of months, resulting in significant loss of biomass, biological activity, and settleability. This presentation focuses on the planning and implementation of the secondary process recovery, which successfully enabled the plant to achieve permit compliance in approximately 6 weeks.

The secondary treatment recovery was carefully planned, assisted with process modeling. Recovery strategies evaluated included, 1) limiting the HPO process recovery to the WAS capacity available in the digestion process versus decoupling the HPO process recovery and the digestion system recovery for an expedited plant restart, 2) reviving the residual secondary bulky sludge (SVI value up to 832 mL/g) versus wasting poorly settling sludge and develop floc-forming sludge, aided with seed sludge from a neighboring plant, and 3) F: M ratio control versus SRT control in flow and load increments.

Key observations, process controls, and monitor parameters will be highlighted for the six recovery phases differing in goals, operating set points, and plant operations. Causes and corrective measures for significant nocardia foaming and biomass loss experienced during the recovery will be discussed, along with collaborations for the recovery of grit removal basins, primary sedimentation tanks, and anaerobic digesters.

The HPO process recovery was robust and resilient due to detailed planning of plant operating conditions, adoption of proper control and monitoring strategies, and timely response to process upsets and operation nuisances.

Brief Biography and/or Qualifications
Dr. Lei has been working in the environmental engineering and research field for over 20 years. She received her Ph. D. degree in Environmental Engineering from the University of Cincinnati and has been with CH2M now Jacobs for the past 11 years. She is a process engineer supporting projects primarily in the Northwest region, with a focus in wastewater treatment process study, modeling, design, startup, and optimization.
 
1:15pm - 4:00pmTour: DIXIE DRAIN PHOSPHOROUS REMOVAL FACILITY
Session Chair: Royce Davis, City of Boise;
Tours Departure E Entrance of Boise Centre on Front Street. 
 
ID: 314 / [Single Presentation of ID 314]: 1
Facility Tours
Topics: EBNR, nitrogen and phosphorus management

Tour: DIXIE DRAIN PHOSPHOROUS REMOVAL FACILITY

Royce Davis

City of Boise, United States of America;

Departs Boise Centre at 13:15 | Returns at 16:00 | Approx. Total Time: 3hrs 45mins | Estimated Transit Time: 45 mins each way - The Dixie Drain Phosphorus Removal Facility is a precedent-setting and innovative project that will greatly enhance water quality of the Boise and Snake Rivers by removing up to 140 pounds of phosphorus per day from water flowing downstream. - A critical component of the health of the Boise River is its nutrient makeup. One of those nutrients is phosphorus, which at normal levels is a key part of the river’s water quality. However, high amounts of phosphorus can produce algae blooms that have negative impacts on overall water quality, fish and other aquatic animals. - Upcoming regulations will require a 98% reduction in the amount of phosphorus leaving the City of Boise’s treatment facilities into the lower Boise River. Boise is currently making improvements at its facilities to remove about 93% of phosphorus through its treatment plants, which protect the upper stretch of the river. The remaining five percent of phosphorus to be removed would require very expensive modifications to existing city facilities and miss an opportunity to remove great amounts of phosphorus otherwise untouched. - Instead, the City of Boise and its partners devised a ground-breaking approach that would result in even better overall water quality for the Boise and Snake Rivers. - A new phosphorus removal facility was built at Dixie Drain (near the confluence of the Boise and Snake rivers) with the goals of: - Improving water quality by removing up to ten tons of phosphorus per year from treated water flowing downstream Proactively meeting upcoming water quality regulations Ensuring the greatest environmental return on investment - Through the treatment efforts both upstream at the existing treatment plants and downstream at Dixie Drain, the overall environmental benefit to the river system is greatly improved. - Outcomes include: - Environmental Return on Investment – For the same cost as upgrading facilities at the existing treatment plants, the Dixie Drain project removes much more phosphorus from the Boise and Snake Rivers. Essentially, for every pound that is not removed at a treatment facility in Boise, a pound and a half is removed downstream at Dixie Drain. - Phosphorus Otherwise Untouched – Dixie Drain captures ground and surface water flows coming from agriculture operations. These discharges are unregulated and are estimated to contribute up to 40% of the total phosphorus flowing from the Boise and Snake rivers. If it were not for the Dixie Drain project, this significant phosphorus discharge would otherwise remain untouched. - Common Sense Location – Approximately 80% of the water treated at Boise’s treatment plants is diverted downstream for irrigation. With the Dixie Drain project, the phosphorus is removed at a location where there are no further diversions for irrigation and additional loading of phosphorus. - Added Benefit – In addition to phosphorus being removed from the rivers, sediment levels are also greatly reduced, improving not only river aesthetics, but improving habitat for fish and aquatic life. - Lasting, Innovative, & Vibrant – Lasting environments and vibrant communities will take continued collaboration and innovation. Eight years in the making, Dixie Drain serves as an important milestone and example of what dedication, hard work and partnership can accomplish.
 
2:40pm - 3:00pmBreak on Exhibit Floor Tuesday Afternoon

All registrants welcome!

Grand Ballroom - Exhibit Hall - Boise Center West 
3:00pm - 4:30pmSession 17 part 2: Resiliency
Session Chair: Rick Shanley, Clean Water Services;
Boise Centre West 120A 
 
3:00pm - 3:45pm
ID: 190 / Session 17 part 2: 1
Main Technical Program
Topics: Resiliency
Keywords: Resiliency, Perparedness, CIP, Risk, Wastewater

Preparing for the Big One - Improving Regional Utility Resilience through Risk Management Analysis and Planning: A Case Study of King County, Washington’s Regional Wastewater Treatment System

Teresa Platin1, Kenny O'Neill2, Andrew Henson3, Michael McMahon1, Sonia-Lynn Abenojar4, Matt Wigle1, Erik Bishop2

1HDR; 2Reid Middleton; 3Aqualyze, Inc.; 4King County, Washington Wastewater Treatment Division; , , ,

With communities depending on wastewater collection, conveyance and treatment, a major earthquake or other natural catastrophe affecting a region’s wastewater system could cripple an area’s near and long-term recovery. It is critical for utilities to prepare by understanding system vulnerabilities, event probabilities and consequences of failure. This understanding provides a basis to develop and prioritize capital improvement project and programmatic mitigations to better withstand a significant event and to improve preparedness and recovery programs.

King County, Washington’s Wastewater Treatment Division (WTD) and the HDR Team initiated the Recommendations to Enhance the Resiliency and Recovery of King County’s Regional Wastewater Treatment Facilities Project. WTD protects water quality and public health by providing high quality treatment to wastewater collected from 34 local sewer agencies serving over 1.5 million people.

Using GIS modeling and map overlays of three major earthquake scenarios, tsunami, landslide, flooding, and extreme weather events, the Team performed a desktop analysis identifying facility and pipeline vulnerabilities. Following workshops to validate findings and determine system criticality and consequence of failure ratings, the Team performed a risk assessment to identify sites requiring field screening focused on seismic hazards. The Team assessed sites for structural, mechanical, electrical, and piping vulnerabilities using industry standard assessment techniques for the structural evaluations, but filling a gap in available tools by developing a new series of checklists for the latter systems. With risk assessment results identifying the areas of highest concern, WTD and the HDR Team developed conceptual capital and programmatic solutions and costs to minimize risks. The mitigation recommendations were prioritized according to WTD’s funding and risk-management parameters and considered equity and social justice standards using an innovative approach developed by WTD and the Team. The project also created a system-wide Preparedness and Recovery report making recommendations for strategic improvements to WTD’s short- and long-term recovery programs.

The regional benefits expected from implementation of these resiliency strategies prior to a natural disaster include: minimization of injury or loss of life among WTD staff; minimization of public health risks; and reduction in the expected cost and time for system-wide recovery.

Brief Biography and/or Qualifications
Teresa Platin, PE, MSCE is a Senior Project Manager leading the Utility Management Services Northwest Business Group for HDR. She has over 25 years of professional experience and began risk-based assessment work after the events of 9/11 motivated her to become certified in vulnerability assessments for drinking water facilities. Her resiliency and asset management work covers a broad range of technical disciplines to provide assessments and mitigation recommendations and to help utilities prioritize and shape their capital and programmatic investments.

Kenny O’Neill, PE is a structural project engineer at Reid Middleton. His experience includes design of new structures, seismic evaluations and seismic retrofit of existing structures, renovations, and seismic resiliency studies. His experience includes work on public and private infrastructure including high-importance facilities such as hospitals, schools, emergency response facilities, electrical control facilities, drinking water systems and storage, and wastewater systems. He had the opportunity to participate in earthquake reconnaissance efforts after the 2017 M7.2 Central Mexico Earthquake last year and is involved in various seismic safety, advocacy and evaluation improvement efforts.

Andrew Henson, PE is a Senior Project Manager at Aqualyze, Inc. He has over 12 years of civil engineering experience ranging from wastewater and storm water planning, hydraulic and hydrologic modeling, options analysis, climate change impacts, and risk-based assessments. Drew’s more recent work has focused on drainage, sewer, and combined sewer infrastructure projects in dense urban environments working with various public agencies.

Mike McMahon is a meteorologist with over 30 years of experience as a scientist and project manager. The concentration of his work has been focused on understanding and communicating the interactions of the
Land-Water-Atmosphere nexus. His projects and research include climate change quantification, impact analysis and adaptation, flood warning, monitoring and response, drought management, post-storm event analyses, EIR/EIS documentation, and GIS mapping for climate adaptation
strategies. He has specific expertise in the communication of risk as it pertains to the social, environmental, and economic aspects of our ecosystems. He has an active role in the climate science community as part of the Western States Water Council, Western Governors Association
and the Florida Climate Institute.

3:45pm - 4:30pm
ID: 233 / Session 17 part 2: 2
Main Technical Program
Topics: Resiliency
Keywords: Earthquake resilience

Shake, Rattle, and … Plan

Jeff McCormick1, Anne Conklin1, Brian Matson1, Nate Cullen2, Rick Shanley2, Peter Shauer2, Kent Yu3, Wolfe Lang4

1Carollo Engineers, United States of America; 2Clean Water Services; 3SEFT Consulting; 4Shannon & Wilson, Inc.;

Public utilities throughout the Pacific Northwest are becoming increasingly aware of the threats posed by a Cascadia Subduction Zone (CSZ) earthquake. Scientific evidence confirms that historical CSZ events reach magnitudes of 8.5 to 9.0 with ground shaking lasting for three minutes. Based on the historical frequency of earthquakes in the region, we could experience a CSZ event at any time. When such an event occurs, the public will look to local governmental agencies to recover and restore critical lifelines, including wastewater conveyance and treatment, to sustain our daily life and our local economy.

Clean Water Services' has begun the process of achieving a long-term seismic resilience at its Rock Creek Advanced Wastewater Treatment Facility. Following the Oregon Resilience Plan, specific Level of Service (LOS) goals and performance criteria were developed for plant operation at various recovery times after a M9.0 CSZ earthquake. The evaluation identified geotechnical hazards at the site including ground shaking, liquefaction, and lateral spreading. The results of the geotechnical hazard analysis allowed the District to estimate performance for existing on-site structures, pipelines and ductbanks and subsequently the ability of the plant to meet level of service goals within the planning period. Armed with this information, the District has been able to revise and reprioritize planned capital improvements to gain necessary capacity and build-in resilience over time.

This presentation will focus on the development of Level of Service (LOS) goals and the results of the geotechnical and structural analyses, and present how the capital improvements plan developed prior to the resilience planning has been adapted to meet resilience goals.

Brief Biography and/or Qualifications
Jeff McCormick has over 20 years of experience in wastewater treatment facility planning and design and has been with Carollo Engineers in their Portland office for the past 10 years.
 
3:00pm - 4:30pmSession 18 part 2: Collections Systems
Session Chair: Yang Zhang, City of Portland;
Boise Centre East 410A 
 
3:00pm - 3:45pm
ID: 126 / Session 18 part 2: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Conveyance, Innovative Pilot Manhole Program, Odor Contrl

Lean a little bit closer: Twin Falls Grandview Sewer

Mark Cummings1, Dennis Galinato1, Craig Anderson1, Josh Baird2, Troy Vitek2

1Murraysmith, United States of America; 2City of Twin Falls, Idaho; , ,

Murraysmith was contracted by the City of Twin Falls to evaluate and solve odor and corrosion issues associated with the large diameter Grandview Sewer Trunkline. All collections systems naturally create and contain odorous compounds. But, the Grandview Trunk is particularly odorous and has severe concrete structure (manhole) and pipe degradation.

The first step of the project was developing a liquid and air phase sampling program to understand both the odor compound generation areas and primary release mechanisms. This included vapor phase monitoring, liquid phase sampling, collecting odor complaint data, and interviewing City staff. The results were then summarized in a memorandum. The City plans to continue the project through the summer with system evaluation, treatment system piloting, life cycle cost assessment calculations, selected system design and construction.

Murraysmith also designed a replacement sewer along the trunkline approximately 1,300 LF long with new 48-inch diameter gravity sewer pipe and three corrosion resistant manholes: Lined concrete manhole, bacterial inhibited manhole, and polymer concrete manhole. The corrosion resistant manholes were utilized as a pilot project to aid the City in determining which system is preferred for manhole replacement in areas of the City with existing corrosion or high corrosion potential. In the future the City will make decisions for replacement manholes that will best serve the City. The condition of the pilot manholes will be tracked and documented through the year and included in the presentation.

This presentation will:

1. Define mechanisms of sewer collection system odor generation and corrosion.

2. Identify odor detection and monitoring techniques.

3. Explain odor monitoring data analysis.

4. Summarize important analysis and results of the study.

5. Collection system odor treatment overview and process selection.

6. Outline corrosion resistant sewer technologies.

7. Provide project conclusions, recommendations and results.

8. Outline the project next steps.

Brief Biography and/or Qualifications
Mark Cummings - Mark Cummings, P.E., has a Bachelor of Science in Biological and Agricultural Engineering and Master of Science in Environmental Engineering, both from the University of Idaho. Mark has worked for Murraysmith since 2009 and has served in a variety of planning, design, and construction roles on water and wastewater projects for municipal clients.

Dennis Galinato - Dennis Galinato, P.E., a Principal Engineer at Murraysmith, has a BSCE from the University of Idaho with over 20 years of experience as an engineering consultant. Dennis has an extensive background in stormwater, wastewater and drinking water planning and design projects for municipal clients.

Craig Anderson, P.E., Craig Anderson, P.E., a Principal Engineer at Murraysmith, has a BSCE from the University of Idaho and a Master of Engineering, also from the Unity of Idaho. He has over 25 years of experience providing wastewater treatment services to clients across the Pacific Northwest.

3:45pm - 4:30pm
ID: 139 / Session 18 part 2: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Trenchless, Microtunnel, Pipe Ram, Change Order

From Pipe Ram to Microtunnel - How Owner and Contractor Worked Together

Erik Waligorski1, Ron Speer2, Ken Van Den Bergh2

1Carollo Engineers; 2Soos Creek Water & Sewer District;

The City of Covington, Washington has seen continual growth over the past decade. To support the growth, Soos Creek Water and Sewer District embarked on the design and construction of a complex regional sewer project. The overall $20 million project included the installation of 6,200 feet of 18-inch diameter gravity sewer using conventional open-cut as well as trenchless construction methods and the construction of a new regional sewer lift station.

Delivering this project required substantial effort that involved designing and constructing eight trenchless crossings, each 122 to 288 feet long under state highways, environmentally sensitive areas, streams, and hillsides. This presentation will summarize:

• Selection of the trenchless technology

• Initial design for the pipe ramming technology

• Construction challenges encountered and partnering solutions when it was determined that pipe ramming could not meet the line and grade requirements for the gravity sewer

• Change order language developed for conversion of the trenchless technology to microtunneling in a manner that protects both the Owner and the Contractor

• Completion of the project using the microtunneling technology

Brief Biography and/or Qualifications
Mr. Waligorski has 20 years of engineering experience in the planning, design, and construction of infrastructure projects with a special emphasis in the rehabilitation and replacement of pipelines using trenchless technologies. He is a licensed engineer in Washington, Oregon and Idaho and is a past-chair of the Pacific Northwest Chapter of the North American Society for Trenchless Technology (NASTT)
 
3:00pm - 4:30pmSession 19 part 2: Planning
Session Chair: Matthew Gregg, Brown and Caldwell;
Boise Centre East 410B 
 
3:00pm - 3:45pm
ID: 164 / Session 19 part 2: 1
Main Technical Program
Topics: Planning
Keywords: wastewater, business case evaluation, optimization

Downsizing to Grow: Optimizing Wastewater Operations for the Next 50 Years

Casey Gish1, Rick Kelly1, Ken Miller2

1Brown and Caldwell, United States of America; 2Lakehaven Water and Sewer District;

Faced with aging infrastructure and a growing population, Western Washington’s Lakehaven Water and Sewer District explored a planning path less followed; streamlining capital spending and improvements through a reduction and transformation of capital assets. A study was conducted to determine the feasibility of closing one of the District’s two wastewater treatment plants (WWTPs) and treating all flows at the one remaining facility. A basis of design was first established with the goal of converting the Redondo WWTP to a pump station and upgrading the Lakota WWTP to receive combined influent flows. Then, using the District’s current planned expansion as a basis for comparison, further expansion requirements for the Lakota WWTP to treat the additional flows and loads from the Redondo WWTP using IFAS treatment were developed. Costs associated with these upgrade alternatives were evaluated using a business case evaluation to determine whether centralization of wastewater treatment provides the greatest long-term value to the District and their customers. Geography and existing plant conditions played a critical role in the outcome of this study. A high head wastewater lift station for flow conveyance and the desire to maintain headworks operation at the Redondo WWTP proved to be big hurdles to overcome. This presentation highlights the methodology and results of the Lakehaven Water and Sewer District considering treatment consolidation for optimized wastewater operations.

Brief Biography and/or Qualifications
Casey Gish (Brown and Caldwell) is an environmental engineer focused on hydraulic modeling, comprehensive planning, and wastewater treatment design. He holds an MSE in environmental engineering with a focus on water and wastewater treatment from the University of Washington. Casey is an active member of the PNCWA Student and Young Professionals Committee and co-leads BC Seattle’s Water for People fundraising efforts.

3:45pm - 4:30pm
ID: 201 / Session 19 part 2: 2
Main Technical Program
Topics: Utility Management
Keywords: Utillity Management, Water Research Foundation, Leaders Innovation Forum for Technology, LIFT, Business Reference Model;

What the Heck is UAIM? A New Way to Take a Comprehensive Look at Your Utility!

Mark Poling

Clean Water Services, United States of America;

UAIM, the Utility Analysis and Improvement Methodology, is a comprehensive set of tools to improve your utility. A Water Research Foundation LIFT for Utility Management Project that has utility participants from all over the US as well as Europe and Australia. This comprehensive approach includes the development of a business reference model, information technology systems, and people processes - a nine box model of People, Process, and Technology at the Operational, Tactical, and Strategic Level. The presentation will include an overview of the methodology and several case studies of utilities both large and small who have successfully employed elements of the approach. Learn how you can become part of the consortium of utilities improving their business practices in meaningful and comprehensive ways.

Brief Biography and/or Qualifications
Mark is the Business Operations Director for Clean Water Services and has more than 30 years of experience working for utilities; serving in a management role for more than 20. Mark is a Past President of the Pacific Northwest Clean Water Association and currently serves on the Water Environment Federation Board of Trustees. A certified Group 4 operator he also holds a M.S. in Environmental Engineering from the University of Washington.
 
3:00pm - 4:30pmSession 20 part 2: Aeration
Session Chair: David Kopchynski, Parametrix;
Boise Centre East 410C 
 
3:00pm - 3:45pm
ID: 252 / Session 20 part 2: 1
Main Technical Program
Topics: Aeration
Keywords: aeration, efficiency, lagoon, BOD, ammonia

How Fine Bubble Aeration can Improve Lagoon BOD and Nutrient Effluent

Tom Daugherty

Triplepoint Environmental, United States of America;

This paper will profile real world case studies to evaluate the performance of fine bubble aeration as a rehabilitation alternative for lagoon systems. Fine bubble size will be defined including an examination of the oxidative power of oxygen. Analysis will be provided with a view of lowering maintenance, reducing solids, and improving treatment. It is common knowledge that lagoon systems often degrade with time. These aging systems are short circuiting and falling into disrepair, a crisis most often felt by smaller, rural municipalities. Given the limitations of conventional lagoon aeration technologies, the potential upgrading of these municipalities is hindered by financial difficulties, the desire to limit treatment downtime, and a general lack of technology options. The purpose of this presentation is to evaluate sub-surface fine bubble aeration as a lagoon rehabilitation tactic. Data will be presented from multiple case studies including leveraging fine bubble aeration to optimize for nitrification. Methods will be presented on how to maintain nitrification in cold weather.

Lagoon systems requiring rehabilitation are often limited to the installation of one of two process non-interruptive technologies: suspended fine bubble diffused aeration and surface aeration. Improvements in fine-bubble technology have led many plants to switch from coarse bubble diffusers, which yield greater surface area per volume of air. Numerous clean-water laboratory tests have demonstrated the improved oxygen-transfer efficiency of the fine bubble (USEPA, 1989). Surface Aerators have undergone few technological changes in the past decade, and occupy a stalwart presence in the lagoon aeration market. While this technology represents a suitable option for lagoons, its frequent maintenance requirements and high energy consumption drive municipalities to seek out treatment alternatives.

Ammonia is a compound of nitrogen and hydrogen that comes from a number of different sources in municipal wastewater. When discharged into the environment, ammonia causes environmental degradation including directly harming fish and amphibians. Due to the impacts of ammonia and other nutrient pollution, new discharge permits are requiring lagoon systems to meet low ammonia effluent levels. Leveraging fine bubble aeration to promote nitrification will be discussed.

Brief Biography and/or Qualifications
Tom Daugherty is Triplepoint Environmental’s Western Regional Manager and is a licensed WWTP operator in WA state. Recently, he served as National Sales Manager for s::can Measuring Systems offering online instrumentation. He also spent seven years as President of Blue Water Technologies, an environmental products company targeting both municipal and industrial water treatment markets. He is an adjunct professor in the Business Department at Gonzaga University. Tom holds an MBA with a focus in Sustainability from Marylhurst University in Portland, OR

3:45pm - 4:30pm
ID: 159 / Session 20 part 2: 2
Main Technical Program
Topics: Aeration
Keywords: Blowers, Screw, Turbo, Lobe, Integrally Geared

Choosing The Right Blower Technology For Your Waste Water Treatment Plant

Zachary Azra

Atlas Copco, United States of America;

For several decades, lobe and multistage blowers had been the tried and true blower technologies for wastewater treatment plants, and until recently there had been no major developments in this portion of the wastewater treatment process. However, over the past 15 years the demand for increased energy efficiency has led to major advances in the available equipment to provide aeration. While the energy savings of these machines is enticing, all blower technologies have their strengths depending on the application and available capital for projects.

The screw blower has offered a revolution in the positive displacement blower technology because of one major advantage – a screw blower has natural compression within the blower element. A traditional lobe blower moves air from the intake of the element to the discharge without actually compressing the air. This means that all the compression that occurs to overcome the system backpressure comes from the system’s piping. A non-symmetrical screw design provides some amount of compression depending on rotor designs, reducing the required energy to provide the necessary pressure.

Integrally geared centrifugal blowers provided a similar leap forward in centrifugal technology. While multi-stage blowers are simple and offer great flexibility by varying a machines impeller mix, these machines are limited in speed due to the critical speed of the rotor assemblies. Integrally geared machines use a single-stage impeller design geared so that the driven shaft and impeller operate at much higher speeds than multistage blowers. The higher speeds offer improved compression efficiency, while high-precision gears limit the additional losses of that gear train.

Finally, direct driven turbo blower technology was truly a revolution in blower efficiency. This technology is broken into two groups by the bearing design that is utilized – air bearings and magnetic levitation bearings. Allowing for operating speeds much higher than even integrally geared machines – increasing the compression efficiency further.

This presentation will focus on all the available blower technologies and their place within waste water treatment processes. Many factors go into selecting the correct blower technology. We will look at these factors and how they affect the choosing the correct technology for wastewater treatment applications.

Brief Biography and/or Qualifications
Zachary Azra is the U.S. Western and Southern Municipal Regional Sales Manager for Atlas Copco Compressors. After graduating from Texas A&M University with an engineering degree in Industrial Distribution, Zach joined Houston Service Industries (HSI) as the Municipal Project Manager for Western U.S./Canada. After Atlas Copco acquired HSI, Zach took a special role as Service Project manager to quantify sites with key blower issues, establish and coordinate a retrofit campaign, and provide technical support to technicians in the field. Zach then grew into a key role as CTS Quality Service Engineer to help analyze the root cause of blower issues and work with engineering to implement solutions.
 
3:00pm - 4:30pmSession 21 part 2: Capital and Delivery
Session Chair: Dan Laffitte, Carolllo Engineers;
Boise Centre West 120B 
 
3:00pm - 3:45pm
ID: 243 / Session 21 part 2: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: Membrane Filtration, Pilot Project, Open Platform, Procurement, Innovation

An Alternative Approach to Piloting and Procurement of Membrane Filtration

John Beacham, Monica Ott

City of Post Falls;

The City of Post Falls, faces a compliance schedule requiring installation of tertiary treatment to meet a stringent permit limit for total phosphorus, among other parameters. The City pursued an alternative piloting and procurement path to maximize flexibility for the City and competition between suppliers.

Much of the membrane filtration pilot testing to date has focused on the end goal of selecting the “single most qualified” vendor. As competition between vendors has increased, the margin between qualified vendors has decreased to where several vendors could likely provide equally successful solutions.

The City elected to use the Pilot Project as a qualifying process prior to participation in the procurement phase rather than to select one vendor and complete negotiations under a sole-source agreement. To do this, the City conducted testing on three membranes from three different vendors to verify that they could each satisfy the requirements under various operational conditions.

A traditional pilot project involves vendor supplied and operated pilot equipment. To maximize flexibility, the City utilized an open-platform pilot unit which enabled side-by-side operational testing of three membrane modules by the City’s project team.

City staff performed nearly all of the construction work, maintained the system during the project, and performed sampling and lab analysis. This informed staff at all levels of issues for consideration during design and full scale construction.

This project successfully demonstrated that all three vendors met the performance criteria necessary to participate in the full scale procurement process to be completed in 2018. The City now holds the ability to obtain competitive proposals from three qualified vendors to obtain the best value for the project.

Brief Biography and/or Qualifications
John Beacham is the Utilities Manager for the City of Post Falls where his responsibilities include oversight of the water, wastewater, and stormwater systems. He has a bachelor’s degree in Civil Engineering from the University of Idaho and a Grade IV Idaho Wastewater Treatment License. John has worked as an operator, a consultant and in regulatory compliance. Outside of work, John would prefer to be found hiking, climbing, or kayaking but is more likely working on house remodeling projects.
Monica Ott is the Environmental Specialist for the City of Post Falls Utilities Division. She coordinates new procedures, develops comments on regulations and permitting items and serves as technical expert to staff. Monica has a Master of Science degree in Soil and Land Resources from the University of Idaho where she worked with the Forest Service on soil reclamation methods, including biosolids.

3:45pm - 4:30pm
ID: 179 / Session 21 part 2: 2
Main Technical Program
Topics: Capital and Delivery
Keywords: capacity, optimization, chemically enhanced primary treatment, trickling filter, bioaugmentation

Spending Less To Get More Capacity - Enhancing Previous WWTP Optimization Improvements

Craig B Anderson1, Mark Cummings1, Todd Marden2

1Murraysmith, United States of America; 2City of Pasco, WA;

The City of Pasco is one of the fastest growing cities in the State of Washington. Over the last several years, the City’s wastewater treatment system has experienced increased and fluctuating loads that created operational challenges and capacity concerns at the treatment plant (WWTP). In early 2017, the City worked with Murraysmith on the expedited design and construction of three projects intended to optimize the stability and capacity of existing primary and secondary treatment systems. The projects consisted of: 1) Chemically Enhanced Primary Treatment (CEPT) with ferric chloride to increase removal rates; 2) Addition of forced air ventilation to the rock media trickling filter to allow for higher loading; and 3) Bioaugmentation of the activated sludge process with trickling filter solids to stabilize SVI.

The CEPT and trickling filter ventilation projects were both started in the summer/fall of 2017 and were immediately successful in improving primary clarifier performance and increasing the capacity and stability of the secondary treatment process. In 2018 both aeration basin bioaugmentation and work to further refineme the CEPT and trickling filter operation were undertaken. After the 2018 enhancements, the City was able to reduce their CEPT chemical costs by over 50%, further increase BOD and TSS removal in the primary clarifiers, improve primary solids concentration by up to 40%, and cut their traditionally high SVI values in half.

This presentation will:

1. Give an overview of the optimization projects installed in 2017

2. Describe the enhancements made in 2018

3. Detail and discuss the resulting unit process improvements (cost and performance)

4. Detail and discuss improvements in overall WWTP stability and capacity

Brief Biography and/or Qualifications
Craig Anderson, P.E., a Principal Engineer at Murraysmith, has a BSCE from the University of Idaho and a Master of Engineering, also from the University of Idaho. He has over 25 years of experience providing wastewater treatment related services to clients across the Pacific Northwest.

Mark Cummings, P.E., has a Bachelor of Science in Biological and Agricultural Engineering and Master of Science in Environmental Engineering, both from the University of Idaho. Mark has worked for Murraysmith since 2009 and has served in a variety of planning, design, and construction roles on water and wastewater projects for municipal clients.

Todd Marden, is a Certified Class III operator in the state of Washington and is the City of Pasco’s Chief Wastewater Operator. Todd has over 19 years of experience in treatment plant operations and lean muscle gains.
 
3:00pm - 4:30pmSession 22 part 2: Resource Management
Session Chair: Ana Arango Rodriguez, Jacobs;
Boise Centre East 430 
 
3:00pm - 3:45pm
ID: 165 / Session 22 part 2: 1
Main Technical Program
Topics: Resource Management
Keywords: Cluster analysis, Uncertainty analysis, Tradeoff analysis, Risk management, watershed habitat

Cluster Analysis to Communicate Uncertainties in River Management Models

Ayman Alafifi1,2

1Brown and Caldwell, United States of America; 2Utah State University;

Identifying few, easy-to-interpret management scenarios from a typically large number of possible futures can significantly assist in highlighting risks and guiding management actions. River habitat models are useful to recommend management actions to improve habitat conditions for priority species. However, these models have multiple hydrologic, ecological, and management inputs and parameters that are uncertain. Prior work to quantify uncertainty in habitat models found that large uncertain ranges propagate and produce an overwhelmingly large number of management alternatives that are challenging to communicate to decision makers. This paper applies semi-supervised cluster analysis to reduce a large number of plausible alternatives and identify a few management scenarios that consider multiple sources of uncertainties. This approach was applied to a large watershed-scale nonlinear optimization model for the Lower Bear River, Utah, to recommend water and money allocation to improve valuable habitat quality and area for selected river, floodplain, and wetland species. The approach included management preferences to subset uncertain parameters into two groups. One improves habitat quality under three uncertain input parameters and the other improves quality under seven uncertain ecological parameters. Results identified four possible management scenarios to operate reservoirs and enhance habitat quality based on modeled uncertainties. The main factors guiding management decisions were the budget to plant riparian trees in addition to habitat quality as defined by indicator species and their water requirements. These key parameters defined possible future scenarios. Examining variability within each cluster helped highlight tradeoffs and identify more desirable alternatives than cluster centroids. Overall, this approach helps identify a few management actions to improve overall habitat quality, guides resource allocation, quantifies tradeoffs, and highlights promising management alternatives.

Brief Biography and/or Qualifications
Ayman Alafifi specializes in water resources, environment, and GIS engineering. He is proficient in working with diverse project teams to develop system models, watershed management plans, and flood risk assessments. Through the course of his academic and professional careers, Ayman has developed hydraulic and hydrologic models and GIS-based decision support tools to guide restoration efforts of the Bear River watershed in Utah. He is also adept at statistical analysis, coding, and uncertainty analysis in watershed models.

3:45pm - 4:30pm
ID: 123 / Session 22 part 2: 2
Main Technical Program
Topics: Resource Management
Keywords: ASR Valve, Deep Well Injection

3R Valve ASR (Aquifer Storage and Recovery) and the NSF 61 certification

Kent Madison1, Matthew Johnson2

13R Valve, LLC; 2Wapiti Consulting, LLC; ,

Prior to the release of the 3R Valve in March 2018, attempts to maintain aquifer recovery, recharge, and regulation while remaining compliant with minimum potable water treatment and distribution standards set forth by NSF 61 were unsuccessful. Current regulations require all components used in potable water applications to be tested and certified to meet NSF 61 standards. With the 3R Valve, filtered treated water can be recovered into potable water drinking wells while maintaining NSF 61 standards. To meet the NSF 61 standard, each valve component in contact with water was submitted to the NSF organization for compliance testing. The components were placed in a water bath, and submerged in multiple fixed water volumes under varying pH. After a period of time, the fluid was tested for a range of contaminates or toxins like lead, nickel, and other hard metals. The toxicology results from NSF 61 concluded that the assembly has a slightly high percentage of nickel content under acidic conditions (water pH below 6). To be NSF 61 certified, the valve will have a minimum daily flow rate disclaimer. The operator shall move 900 gal/day (minimum) to meet the NSF 61 requirements. Steps are being performed to identify which component is responsible for the nickel contamination. The identified item will be manufactured with a different metal and retested in an attempt to remove the minimum flow restriction. With a fully NSF 61-compliant 3R Valve, private owners and municipalities will be able to recover, recharge, and regulate aquifers while meeting potable water drinking standards. The 3R Valve is currently the only known solution for this application that meets NSF 61 standards.

Brief Biography and/or Qualifications
Kent Madison is the inventor of the 3R Valve. Kent has installed his valves for numerous clients throughout the USA and a few over seas. Kent owns Madison Farms in Echo, Oregon. Kent perfected his ASR valve by installations on his farm. Kent has been heavily involved with Oregon legislation pertaining to the usage of ground water and the process of re-injection.
Matthew Johnson is a professional engineer hired by 3R Valve to perform all the engineering and project management for all 3R valve installations. Matt graduated from University of Idaho with a BS in Electrical Engineering. Matt has been involved with municipal water and wastewater designs and construction management for 8 years with an engineering firm specializing in municipal and industrial applications. Matt is the owner of Wapiti Consulting. Wapiti Consulting is the engineering firm and OEM manufacture of the Industrial Control Panel for the 3R Valve system.
 
3:00pm - 4:30pmSession 23 part 2: Untapped Experts: Construction Managers
Session Chair: Shawn Wilson, City of Boise;
Session Chair: Corey Pence, City of Boise;

As the industry evolves, construction management professionals are playing an increasing role in as a key partner in a project’s success.  This series of topics will demonstrate how important it is to leverage this expertise in our industry.

Learning Objectives: This series of topics is intended to show why partnering is important, how we are navigating today’s most important challenges, and what the future might look like in construction.  Data and technology are challenging our traditional relationships with the Owner-A/E-Contractor triangle and embracing the skillsets of each can work to strategically target risks and invite the future to lead to better outcomes for projects.

Who Should Attend: This series would be most beneficial to owners, engineering project managers, and construction professionals or folks that are responsible for managing risk and can influence change management and lead the industry into the future.

Boise Centre East 420B 
 
3:00pm - 4:00pm
ID: 311 / Session 23 part 2: 1
Main Technical Program
Topics: Planning, Capital and Delivery
Keywords: construction

Construction Management 3: : Drones and 3-D Concrete Printers? The Future is Here.

Shawn Wilson1, Corey Pence1, Rob Bousfield1, Tyler Resnick2

1City of Boise; 2McAlvain Companies, Inc.;

In the past thirty years the industry has moved FROM learning CAD design TO BIM modeling, using drones to add infinite dimensions to your survey, virtual tours through your existing or new facilities, and 3-D concrete printing of structures. This session will be a discussion on how new technology will advance construction practices and what new technology is on the horizon with the potential to drastically change the industry?

Moderated Panel Session: Each panel speaker will get 8-10 minutes to present on the topic, followed by a moderated 10 to 15-minute question and answer session with the audience. Total time 40 minutes per topic. The panel includes an owner, construction manager, and engineer. The speakers are professionals with extensive experience in a variety of contract mechanisms that work in the water and wastewater industry.

Brief Biography and/or Qualifications
Panel

Moderator: Corey Pence
Corey Pence is a risk manager with a significant focus on contracts and construction. Corey oversees the production and execution of all substantial contracts within a City with a focus on sharing risks appropriately between parties
.
Owner: Rob Bousfield
Rob has been in the role of owner project manager for much of his 30-year career. Projects have ranged from small tenant improvements to fire stations, libraries, and multi-million wastewater treatment plant expansions. He has extensive experience with private and public construction using varying contract mechanisms including design-bid-build, construction manager, and construction manager at-risk approaches.

Construction Manager: Tyler Resnick
As a Construction Manager and General Contractor, Tyler Resnick has successfully completed numerous Water and Infrastructure projects. He has experience as an early preconstruction collaborator and construction manager on interesting water, urban and infrastructure projects in the Treasure Valley such as the Dixie Drain Phosphorus Removal Facility, Grove Plaza Renovation, and the Lander Street Water Renewal Facility Improvements Program. Throughout his career, he has had an emphasis on planning, handling and treating of water and wastewater infrastructure that drives his passion for responsible development. His focus on good planning and sustainable solutions has been reinforced through sitting on the City of Boise Green Building Code Review Board and the City of Boise Building Code Advisory Board.

Engineer: Sean Wilson
Shawn Wilson is a professional engineer with over 20 years of experience working in the private sector and the public sector leading strategic planning, and implementing the design and construction of complex infrastructure projects. Shawn has experience working with industrial clients under design-build models, and significant public sector clients working under design-build, construction manager at risk, and design bid build contract mechanisms. His variety of contract mechanisms and broad experience in different sectors gives him a unique prospective on construction management.

4:00pm - 5:00pm
ID: 312 / Session 23 part 2: 2
Main Technical Program
Topics: Planning
Keywords: construction

Construction Management 4: The Evolution of Risk Management, Shifting From a Crystal Ball to Data.

Shawn Wilson1, Corey Pence1, Rob Bousfield1, Tyler Resnick2

1City of Boise; 2McAlvain Companies, Inc.;

A recent reported that the average dispute in the United States is $34 million. In many cases, the simple act of reviewing for the key causes of disputes (quick timeline, poor quality contract documents, etc.) can help avoid challenges. Over the next 50 years, how will analytics or data science (artificial intelligence) augment the expertise of owners, engineers, and construction managers to predict the probability of disputes or negative outcomes on projects?

Moderated Panel Session: Each panel speaker will get 8-10 minutes to present on the topic, followed by a moderated 10 to 15-minute question and answer session with the audience. Total time 40 minutes per topic. The panel includes an owner, construction manager, and engineer. The speakers are professionals with extensive experience in a variety of contract mechanisms that work in the water and wastewater industry.

Brief Biography and/or Qualifications
Panel

Moderator: Corey Pence
Corey Pence is a risk manager with a significant focus on contracts and construction. Corey oversees the production and execution of all substantial contracts within a City with a focus on sharing risks appropriately between parties
.
Owner: Rob Bousfield
Rob has been in the role of owner project manager for much of his 30-year career. Projects have ranged from small tenant improvements to fire stations, libraries, and multi-million wastewater treatment plant expansions. He has extensive experience with private and public construction using varying contract mechanisms including design-bid-build, construction manager, and construction manager at-risk approaches.

Construction Manager: Tyler Resnick
As a Construction Manager and General Contractor, Tyler Resnick has successfully completed numerous Water and Infrastructure projects. He has experience as an early preconstruction collaborator and construction manager on interesting water, urban and infrastructure projects in the Treasure Valley such as the Dixie Drain Phosphorus Removal Facility, Grove Plaza Renovation, and the Lander Street Water Renewal Facility Improvements Program. Throughout his career, he has had an emphasis on planning, handling and treating of water and wastewater infrastructure that drives his passion for responsible development. His focus on good planning and sustainable solutions has been reinforced through sitting on the City of Boise Green Building Code Review Board and the City of Boise Building Code Advisory Board.

Engineer: Sean Wilson
Shawn Wilson is a professional engineer with over 20 years of experience working in the private sector and the public sector leading strategic planning, and implementing the design and construction of complex infrastructure projects. Shawn has experience working with industrial clients under design-build models, and significant public sector clients working under design-build, construction manager at risk, and design bid build contract mechanisms. His variety of contract mechanisms and broad experience in different sectors gives him a unique prospective on construction management.
 
3:00pm - 4:30pmSession 24 part 2: Secondary Treatment
Session Chair: Rick Butler, King County;
Boise Centre West 110A/110B 
 
3:00pm - 3:45pm
ID: 296 / Session 24 part 2: 1
Main Technical Program
Topics: Innovation
Keywords: intensification, biofilter, primary treatment, footprint, wet weather flow

New biofilter process achieves 64% footprint reduction at Korean megacity WRRF

Jon Liberzon, David Rhu

Tomorrow Water (BKT), United States of America;

Considering that most urban WRRFs are built on legacy parcels, finding available land for new process equipment can be a major struggle. At the same time, these plants must contend with tightening nutrient limits and stormwater treatment targets. To this end, plants must intensify their treatment train to process more wastewater, to a higher quality, in a smaller footprint. This study reports data from a unique plant intensification project undertaken at the largest WRRF in the megacity of Seoul.

In late 2017, Tomorrow Water (BKT) commissioned a new 250,000m3/d (66 MGD) treatment train at the Joongrang WRRF in Seoul, South Korea. The traditional primary settling, MLE activated sludge, and secondary clarifier process was replaced with a novel treatment train based on the company’s BBF biofilter. In the new design, screened and degritted municipal sewage is passed through three sequential upflow biofilter stages. The first biofilter is optimized for suspended solids removal. The second biofilter performs biological denitrification using carbon diverted from the first stage, followed by aerobic oxidation. The third biofilter performs aerobic nitrification, and recycles nitrates back to the second stage. The new BKT installation also includes a separate wet weather flow biofilter train to manage dilute stormwater influx.

The new treatment train has operated at full capacity since September 2017. Over 6 months, hydraulic residence time (from primary through tertiary treatment) averaged 3.5 hours, a 70% reduction from the previous average of 11 hours. Treatment footprint was reduced by 64% to 0.04 m2/m3 treated·day. Primary treatment alone achieved a 50% reduction in suspended solids, at an HRT of 10.6 min and footprint of 1069 m2, representing an 80% footprint reduction. Effluent suspended solids, BOD5, total nitrogen and total phosphorus concentrations averaged 3.6 mg/l, 2.7 mg/l, 15.4 mg/l and 0.12 mg/l, respectively, which meets or exceeds treatment targets. These data demonstrate a unique opportunity for process intensification at large urban WRRFs worldwide.

Brief Biography and/or Qualifications
Jon Liberzon is VP of business development at Tomorrow Water (BKT), an environmental services firm with over 20 years of experience leading the Korean water treatment market. BKT has developed 140 original patents and constructed Asia’s largest wastewater treatment facility.
Prior to joining BKT, Jon consulted for a range of industrial and multinational clients. He has done work for AB InBev, the World Bank, DFAT, and the world's first commercial dairy to directly reuse livestock wastewater. From 2012-2017, he was director of water technologies at Algal Scientific, where he commercialized the world's first Hypertrophic treatment system for two major US malting plants. He also served as technology development manager at Aquanos, a wastewater treatment startup focused on reducing energy requirements for treatment of domestic wastewater. Jon also has experience working on water conveyance systems and agricultural development projects in least developed countries (LDCs), including Haiti and Vanuatu.

Jon received a Master of Science degree in Agricultural Engineering at Technion – Israel Institute of Technology and a Bachelor of Science degree from the Program in the Environment at the University of Michigan. He has served as an advisor to the Buckminster Fuller Challenge at BFI and as a member of the Engineers Without Borders Detroit professional chapter and was president of the EWB chapter at the Technion.

3:45pm - 4:30pm
ID: 289 / Session 24 part 2: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Phosphorus, EBPR, Tertiary Filtration, Pocatello

Successful Phosphorus Removal Upgrades on Fast-Tracked Schedule, Pocatello, Idaho

Brad Bjerke1, Levi Adams2

1HDR, United States of America; 2Pocatello Idaho, Water Pollution Control Plant; ,

The City of Pocatello’s 2012 NPDES permit defined an aggressive roadmap for its Water Pollution Control Plant to comply with new Portneuf River TMDL based total phosphorus (TP) limits within a five year window. This case study reviews the successful five year path from 2013 to 2017 in achieving phosphorus compliance and the results. Effluent performance has surpassed expectations with total phosphorus concentrations below 0.2 mg/L.

NDPES Fast-Track Compliance Schedule

The permit required the following:

1. “The Plan” by December 31, 2013

2. “The Design” by December 31, 2014

3. “Contract Award” by December 31, 2015

4. “Construction Complete” by December 31, 2016

5. “Full Compliance” by December 31, 2017

Roadmap to Compliance

“THE PLAN” – Improve the biological phosphorus removal process and add effluent filtration to meet permitted effluent TP load (equivalent of 0.25 mg/L TP at average design flow).

“THE DESIGN” – Add swing zones and recycle streams to the activated sludge process, add dual media granular filters, add chemical feed system, replace chlorine with UV disinfection.

“CONTRACT AWARD” – Two bids were received in April 2015, the contract was awarded for approximately $19 million.

“CONSTRUCTION COMPLETE” – Construction was completed in April 2017. Contractor change orders were approximately 2.5 percent of construction cost.

“FULL COMPLIANCE” – Operational fine tuning was performed from May to December 2017 and the facility met its goal of full compliance for TP in 2018.

The Results

The presentation will provide a full review of the plant design and performance following startup. Details will be presented on the impact of changes to the Enhanced Biological Phosphorus Removal (EBPR) process from modifications to aeration basins and operations. The chemical dosages used and the application points will be discussed along with the phosphorus removal efficiency through the tertiary filter system.

Brief Biography and/or Qualifications
Brad Bjerke, P.E. Education: MS Civil Engineering (SDSU). 33 years experience in design, construction and operation of wastewater treatment facilities. Class IV Wastewater Treatment Operator.

Levi Adams, Operations Supervisor for Pocatello Water Pollution Control Plant. Education: Idaho State University. 18 years experience in wastewater treatment operations, Class IV Wastewater Treatment Operator.
 
3:45pm - 4:45pmStudents and Young Professionals Committee Meeting
Boise Centre West 140 
4:00pm - 5:00pmMember Services Committee Meeting
Boise Centre West 110C 
4:30pm - 7:00pmExhibitors Closing Reception

All registrants welcome!

Serving a special batch of Wasted Ale IPA brewed by Mother Earh Brewing (Nampa ID).

A special batch of beer using recycled water created in cooperation with PNCWA, using recycled water!

Grand Ballroom - Exhibit Hall - Boise Center West 
7:00pm - 9:00pmDinner—Tuesday Night Awards Banquet
Session Chair: Adam McClymont, Jacobs;
Session Chair: Mark Walter, Waterdude Solutions, LLC;

Complete Packages or with Banquet Ticket

Boise Centre East 400 
Date: Wednesday, 24/Oct/2018
7:00amRegistration Desk is Open

7:00 AM - 1: 00 PM

 
7:00amSpeaker Ready Room is Open

7:00 AM - 11: 00 AM

Boise Centre West 110C North 
7:00am - 8:30amBreakfast—Wednesday Breakfast

Complete Packages only

Boise Centre East 400 
8:00am - 9:30amTour: HYATT HIDDEN LAKES RESERVE & BOISE WATERSHED
Session Chair: Royce Davis, City of Boise;
Tours Departure E Entrance of Boise Centre on Front Street. 
 
ID: 315 / [Single Presentation of ID 315]: 1
Facility Tours
Topics: Stormwater, Outreach/Communications

Tour: HYATT HIDDEN LAKES RESERVE & BOISE WATERSHED

Royce Davis

City of Boise, United States of America;

Departs Boise Centre at 08:00 | Returns at 09:30 |Approx. Total Time: 1hrs 30mins | Estimated Transit Time: 15 mins each way - Hyatt Hidden Lakes Reserve is a 44-acre haven for birds, animals, and people located on the edge of Boise's West Bench featuring trailheads, pathways, and overlook areas. - Former Boise City Council President, Maryanne Jordan, and officials from the Ada County Highway District (ACHD) were joined by members of the Hyatt family for a ribbon cutting ceremony Sept 18, 2012. A generous donation of the 22-acre wetland by the Hyatt family made it possible for the city to purchase another 22 acres in the late 1990s with the goal of preserving open space and providing key habitat for wildlife in West Boise. An adjacent 10-acre parcel was also acquired completing the 54-acre site. - In December 2008, the city of Boise's Public Works Department received a $1.3 million EPA grant to create an innovative stormwater treatment pilot project at the site. Since then, Public Works staff members have been gathering water quality data and developing a plan for treating urban stormwater runoff and re-using the treated stormwater in the existing wetland and wildlife sanctuary. - The project demonstrates appropriate methods for decentralized stormwater treatment using sand filtration technology in addition to construction of vehicle parking with porous materials that mimic natural hydrologic conditions. ______________ - The Boise WaterShed is located at the West Boise Water Renewal Facility, the Boise WaterShed introduces you to water protection and conservation through hands-on exhibits and the largest concentration of public art in the state of Idaho! - The Boise WaterShed is a partnership between the Boise Public Works Department and the non-profit organization, Boise WaterShed Exhibits, Inc. - River Campus - The 2-acre outdoor River Campus simulates a journey through our watershed from the headwaters to the Snake River using public art and a simulated Boise River water feature in a park-like setting. Children can crawl through a sewer pipe and make nature art in the nature play pockets within the interactive trail. - Education CenterThe LEED-Certified education center contains more than 15 hands-on exhibits, a library and a theater. Exhibit highlights include a photo booth to capture yourself hovering over a 3D geothermal aquifer and an augmented reality sandbox! - Events & Activities The Boise WaterShed offers free, year-round activities and events for all ages. Visitors can explore the education center and adjacent river campus during normal business hours. Groups of 10 or more people must make a reservation at least two weeks in advance for free lessons and tours. Lessons are conducted on-site, at the nearby Boise River and ponds, or Hyatt Wetlands
 
8:00am - 10:15amSession 25 part 1: Resiliency/Preparedness
Session Chair: Jeffrey A. Lundt, King County Wastewater Treatment Division;
Boise Centre East 420B 
 
ID: 113 / Session 25 part 1: 1
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Emergency Preparedness, WARN, Cyber Secutity, Physical Security, EAP

Emergency Preparedness Part I

Jeffrey A. Lundt1, Bill Carr2

1King County Wastewater Treatment Division, United States of America; 2Suez; ,

The goal of this full day, pre-conference workshop is to provide a basic understanding of emergency preparedness, and the response of water and wastewater utilities in the event of emergencies and disasters. Assessing risks, planning and preparedness will lead to utilities that function better in emergencies, work more efficiently to restore service to customers and are better able to maintain water and environmental quality.

An outline of the segments of the workshop follows:

Section 0 – Introduction

Section 1 - Water Utility Emergencies - Discussion of the variety of emergencies that can affect water and wastewater utilities

Section 2 - Emergency Case Studies -Review of two or three emergencies that serve as examples of what can go wrong and how the utility responded

Section 3 - Emergency Action Plan - Discussion of an Emergency Action Plan (EAP) and how to develop one

Section 4 - Risk & Resilience - Introduce to the concepts of risk and resilience, how to quantify and how to compare

Section 5 - Incident Command System (ICS) - Introduction to the Federal Emergency Management Agency Incident Command System elements and process

Section 6 - Public Outreach During Emergencies - To provide an understanding of how to work with the public during an emergency to keep them informed, safe and reduce misinformation and panic

Section 7 – Business & Operational Continuity - Provide an overview of what needs to be considered in maintaining a water or wastewater utility during the immediate aftermath and recovery

Section 8 - Water/Wastewater Agency Response Network (WARNs) – Introducing the WARN organization and purpose

Section 9 – Tabletop & Field Exercises, Other Training – Discussion of how to organize and run emergency preparedness planning and practice tools including who to involve, public notice and participations, logistics how to evaluate outcomes

Section 10 – Personal Preparedness - Discussion of the planning and preparation that utility employees and their families should undertake

Section 11 – Facility Security - To outline ways to review security of facilities and highlight some typical security measures

Section 12 – Cyber Security - Develop a list of realistic vulnerabilities for your system and to identify possible mitigation measures

Brief Biography and/or Qualifications
Jeff Lundt is a Principal Wastewater Engineer with King County Wastewater Treatment Division. He is responsible for planning and design of a variety of WWTP processes. He is a professional engineer in 5 states and has been designing and overseeing construction of public works projects for nearly 42 years. He received the 2018 Government Engineer of the year Award from the Puget Sound Engineering Council in February. In addition to his work at WTD, Jeff is responsible for preparing training curricula that is used by the Pacific Northwest Section AWWA.

ID: 336 / Session 25 part 1: 2
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Emergency Preparedness, WARN, Cyber Secutity, Physical Security, EAP

Emergency Preparedness Part II

Jeffrey A. Lundt1, Bill Carr2

1King County Wastewater Treatment Division, United States of America; 2Suez; ,

The goal of this full day, pre-conference workshop is to provide a basic understanding of emergency preparedness, and the response of water and wastewater utilities in the event of emergencies and disasters. Assessing risks, planning and preparedness will lead to utilities that function better in emergencies, work more efficiently to restore service to customers and are better able to maintain water and environmental quality.

An outline of the segments of the workshop follows:

Section 0 – Introduction

Section 1 - Water Utility Emergencies - Discussion of the variety of emergencies that can affect water and wastewater utilities

Section 2 - Emergency Case Studies -Review of two or three emergencies that serve as examples of what can go wrong and how the utility responded

Section 3 - Emergency Action Plan - Discussion of an Emergency Action Plan (EAP) and how to develop one

Section 4 - Risk & Resilience - Introduce to the concepts of risk and resilience, how to quantify and how to compare

Section 5 - Incident Command System (ICS) - Introduction to the Federal Emergency Management Agency Incident Command System elements and process

Section 6 - Public Outreach During Emergencies - To provide an understanding of how to work with the public during an emergency to keep them informed, safe and reduce misinformation and panic

Section 7 – Business & Operational Continuity - Provide an overview of what needs to be considered in maintaining a water or wastewater utility during the immediate aftermath and recovery

Section 8 - Water/Wastewater Agency Response Network (WARNs) – Introducing the WARN organization and purpose

Section 9 – Tabletop & Field Exercises, Other Training – Discussion of how to organize and run emergency preparedness planning and practice tools including who to involve, public notice and participations, logistics how to evaluate outcomes

Section 10 – Personal Preparedness - Discussion of the planning and preparation that utility employees and their families should undertake

Section 11 – Facility Security - To outline ways to review security of facilities and highlight some typical security measures

Section 12 – Cyber Security - Develop a list of realistic vulnerabilities for your system and to identify possible mitigation measures

Brief Biography and/or Qualifications
Jeff Lundt is a Principal Wastewater Engineer with King County Wastewater Treatment Division. He is responsible for planning and design of a variety of WWTP processes. He is a professional engineer in 5 states and has been designing and overseeing construction of public works projects for nearly 42 years. He received the 2018 Government Engineer of the year Award from the Puget Sound Engineering Council in February. In addition to his work at WTD, Jeff is responsible for preparing training curricula that is used by the Pacific Northwest Section AWWA.

ID: 337 / Session 25 part 1: 3
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Emergency Preparedness, WARN, Cyber Secutity, Physical Security, EAP

Emergency Preparedness Part III

Jeffrey A. Lundt1, Bill Carr2

1King County Wastewater Treatment Division, United States of America; 2Suez; ,

The goal of this full day, pre-conference workshop is to provide a basic understanding of emergency preparedness, and the response of water and wastewater utilities in the event of emergencies and disasters. Assessing risks, planning and preparedness will lead to utilities that function better in emergencies, work more efficiently to restore service to customers and are better able to maintain water and environmental quality.

An outline of the segments of the workshop follows:

Section 0 – Introduction

Section 1 - Water Utility Emergencies - Discussion of the variety of emergencies that can affect water and wastewater utilities

Section 2 - Emergency Case Studies -Review of two or three emergencies that serve as examples of what can go wrong and how the utility responded

Section 3 - Emergency Action Plan - Discussion of an Emergency Action Plan (EAP) and how to develop one

Section 4 - Risk & Resilience - Introduce to the concepts of risk and resilience, how to quantify and how to compare

Section 5 - Incident Command System (ICS) - Introduction to the Federal Emergency Management Agency Incident Command System elements and process

Section 6 - Public Outreach During Emergencies - To provide an understanding of how to work with the public during an emergency to keep them informed, safe and reduce misinformation and panic

Section 7 – Business & Operational Continuity - Provide an overview of what needs to be considered in maintaining a water or wastewater utility during the immediate aftermath and recovery

Section 8 - Water/Wastewater Agency Response Network (WARNs) – Introducing the WARN organization and purpose

Section 9 – Tabletop & Field Exercises, Other Training – Discussion of how to organize and run emergency preparedness planning and practice tools including who to involve, public notice and participations, logistics how to evaluate outcomes

Section 10 – Personal Preparedness - Discussion of the planning and preparation that utility employees and their families should undertake

Section 11 – Facility Security - To outline ways to review security of facilities and highlight some typical security measures

Section 12 – Cyber Security - Develop a list of realistic vulnerabilities for your system and to identify possible mitigation measures

Brief Biography and/or Qualifications
Jeff Lundt is a Principal Wastewater Engineer with King County Wastewater Treatment Division. He is responsible for planning and design of a variety of WWTP processes. He is a professional engineer in 5 states and has been designing and overseeing construction of public works projects for nearly 42 years. He received the 2018 Government Engineer of the year Award from the Puget Sound Engineering Council in February. In addition to his work at WTD, Jeff is responsible for preparing training curricula that is used by the Pacific Northwest Section AWWA.
 
8:00am - 10:15amSession 26 part 1: Collections Systems
Session Chair: Jeremy Coles, City of Rexbrg;
Boise Centre East 410A 
 
8:00am - 8:45am
ID: 265 / Session 26 part 1: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: I&I abatement, stormwater, trenchless technology, pipe ramming

The Stormy Side of Sanitary I&I Abatement – Godfrey Park

Brendan O'Sullivan1, Sue Nelson2

1Murraysmith; 2City of St Helens, OR; Brendan.O'Sullivan@murraysmith.us,

The City of St. Helens, Oregon, located on the bank of the Columbia River, recently completed a multi-year Inflow and Infiltration (I&I) Abatement Program to reduce sanitary sewer overflows during wet weather events and reduce treatment plant costs. The program took a holistic approach to addressing I&I reduction and rehabilitated or installed approximately 65,000 lineal feet of sanitary sewer mainline pipe, 50 manholes, over 800 sanitary sewer service lateral connections, and installed approximately 10,000 lineal feet of storm sewer pipe to handle the increase in stormwater flows and mitigate known constrictions within the storm sewer system.

The final phase of the program, the Godfrey Park Storm Sewer Replacement project, included the replacement of two undersized and structurally deficient storm sewer, storm water conveyance improvements, and a new outfall on the Columbia River. Running beneath a 45-foot tall roadway embankment, an inhabited RV park, and at the bottom of two ravines, the alignment of the existing sewers were extremely difficult to access and required numerous permits to facilitate construction. Design considerations for the proposed sewer included geotechnical conditions, geographic location, topography and site access, design storm, evaluation and selection of installation techniques (both conventional and trenchless), stakeholder/public impacts, and risk assessment. Trenchless installation techniques considered for pipeline installation included, but were not limited to, microtunneling, auger-boring, and pipe ramming. Challenges during construction included in water work constraints, abnormal wet weather, and differing site conditions related to the geotechnical conditions. This presentation will discuss the various elements of the project that lead to the successful installation of the new 66-inch diameter storm sewer; preliminary design, funding sources, permitting, construction challenges, risk sharing, and risk mitigation strategies the City implemented.

Brief Biography and/or Qualifications
Brendan O'Sullivan:
Brendan received his BS in Civil Engineering from the University of Portland and has been working at Murraysmith for over 13 years. He has served in a variety of design, management, and construction administration roles on major public improvement projects that include large diameter transmission pipelines, water distribution pipelines, sanitary sewers, storm sewers, water storage facilities, and utility undergrounding. Brendan has a passion for infrastructure engineering and trenchless technologies and is the current Chair of the Pacific Northwest Chapter of the North American Society of Trenchless Technology.

Sue Nelson:
Sue Nelson, the Public Works Engineering Director for the City of St. Helens, Oregon, oversees all engineering and wastewater staff, programs, and budget. After twelve years in banking, she transitioned into the field of engineering which would allow her to make a more positive impact in her community. Obtaining her civil engineering degree from Portland State University, she spent four years as an engineering consultant before joining the City of St. Helens in 2001.

8:45am - 9:30am
ID: 248 / Session 26 part 1: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Lakeline, Condition, Risk, Improvements

What, the Sewer is in the Lake? Condition Assessment and Risk Mitigation for the Renton’s Sewer Lakeline

David Christensen1, Daniel Reisinger2, David Scott3

1City of Renton; 2Carollo; 3Tetra Tech; , ,

The City of Renton, WA provides service to 55 homes adjacent to Lake Washington with a mile long Lakeline System, which is buried offshore in Lake Washington. Maintaining service in this 45-year-old pipe with limited access is critical to avoid overflows from the Lakeline have a high likelihood of environmental impacts, insurance claims, and news headlines.

The current pipe’s structural and operation and maintenance (O&M) condition, a critical aspect of assessing risk, was unknown and difficult to determine. Multiple techniques were integrated to provide a multi-faceted view of the pipeline, including CCTV, Ultrasonic Thickness testing, operation testing, hydraulic modeling, and site evaluation. The structural and O&M condition were used to determine the remaining useful life of the Lakeline System.

Structural improvement and O&M activities that reduce risk of overflows were identified based on condition, operation, and historical failures. This engaged both specialists and the expertise of City wastewater operators, who were instrumental in identifying, prioritizing, and implementing both structural and O&M improvements. These results recommended siting manholes for additional access, expanded cleaning, and public outreach/education. The City is installing two new submerged manholes and cleaning the Lakeline in the summer/fall of 2018.

This presentation will focus on:

(1) How multiple techniques were applied to determine the condition of the Lakeline and the findings were integrated;

(2) Mitigating risk through structural improvements and O&M activities;

(3) The benefits and challenges of addressing infrastructure with limited access;

(4) The lessons learned from study activities.

Brief Biography and/or Qualifications
David Christensen is the Wastewater Utility Engineering Manager for the City of Renton, WA. Dave has over 33 years of experience in public works, the past 27 years for Renton.

Daniel Reisinger, P.E. is a Lead Water Resources engineer with Carollo. Dan has 12 years experience assisting utilities in master planning, hydraulic and water quality modeling, and asset management.

David Scott, P.E., is a project manager with Tetra Tech. Dave has over 20 years of experience in the planning, design and construction of public works in the US and internationally.

9:30am - 10:15am
ID: 158 / Session 26 part 1: 3
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Gravity Sewer, Wetland, Wildlife Resuge, Groundwater Control, Trenchless Crossing

New Gravity Trunk Sewer through Wetland and Peat Bog

Wolfe Lang1, Brad Crement2

1McMillen Jacobs Associates, United States of America; 2Clean Water Services; ,

The Onion Flat Trunk, constructed in 1982, was parallel to Rock Creek through a peat bog and serves the eastern portion of Sherwood Oregon. It is currently in part of the Tualatin River Wildlife Refuge owned by the USFW with plans to restore the peat bog back to its natural state.

The original construction encountered significant problems with groundwater and maintaining the flat slope of 0.30%. After construction approximately 1,500 feet of the sewer settled 6 to 18 inches due to the long-term consolidation/degradation of the peat. This hindered the hydraulic capacity and created a vapor lock trapping harmful gasses which resulted in accelerated concrete degradation.

An extensive alternatives analysis was conducted to determine the preferred means to mitigate the structural and maintenance issues associated with the existing sewer line. The solution was to replace 5,500-foot of 18-inch concrete pipe with a new 27-inch pvc pipe. This solution was reached because rehabilitation would not help the reduced hydraulic capacity or ease maintenance concerns being experienced by the settlement. Extensive geotechnical, permitting, hydraulic studies, and negotiations with the Wildlife Refuge were conducted to select the right alignment and depth to avoid peat soil, minimize environmental impacts, and reduce the construction challenges (such as, deep excavation and dewatering needs).

During construction, groundwater was found to be within a couple feet of the surface. Combined with sand lenses this resulted in flowing sand conditions with unstable trench sidewalls. Extensive wellpoints dewatering system was installed every 5-10 feet along the trench and bore pits.

Another significant project challenge was the crossing of Hwy 99 West. The existing trunk was located on the bank of Rock Creek, which was spanned by two bridges. The preferred solution was to relocate the trunk away from Rock Creek and auger-bore under the highway embankment with a 42-inch oversized casing and steering head to facilitate the very flat grade carrier pipe installation.

The project was completed within budget and only 2 weeks behind schedule, despite the major challenges encountered during trenchless construction, significant dewatering required, and an early fall.

Brief Biography and/or Qualifications
Mr. Crement is a Senior Engineer with Clean Water Services in their conveyance department managing the replacement and construction of new gravity trunk sewers. He has more than 15 years of experience.

Mr. Lang is a Senior Associate with McMillen Jacobs Associate. He has more than 20 years of experience in geotechnical engineering consultation and design services. He has extensive experience in the planning and design of geotechnical aspects for pipeline and trenchless projects throughout the Pacific Northwest.
 
8:00am - 10:15amSession 27 part 1: Regulatory
Session Chair: Heather Rankin, City of Boise;
Boise Centre East 410B 
 
8:00am - 8:45am
ID: 134 / Session 27 part 1: 1
Main Technical Program
Topics: Regulatory Challenges
Keywords: temperature compliance reuse modeling planning

Developing and Comparing Approaches for Complying with Future Temperature Criteria

Scott Mansell, Bob Baumgartner, Raj Kapur

Clean Water Services, United States of America;

Many municipal wastewater utilities and industries in the Pacific Northwest must meet stringent temperature requirements in order to avoid excessive impacts to salmonids and other aquatic life. As population growth in the region and the effects of climate change cause energy inputs to streams and rivers to increase, complying with temperature regulations and protecting salmonid habitat is likely to become increasingly difficult. While there are many strategies which could potentially be used to decrease and/or offset the thermal load from effluent discharges, the thermal benefits associated with most of these is difficult to quantify, and the effectiveness usually varies seasonally. This makes it difficult to determine which strategies or combinations of strategies will be most effective for an individual utility or industry. Here we present the benefits of different combinations of potential strategies for achieving thermal compliance based on a detailed analysis of the Tualatin River Watershed under buildout (~2050) conditions and assuming current Oregon numeric temperature criteria will apply June through October in the future. Analysis of numerous data along with a CE-QUAL-W2 model of projected buildout conditions were used to estimate and compare the thermal benefits of expanded flow augmentation by reservoir releases using both bottom withdrawal and selective withdrawal, effluent reuse, industrial source control, natural treatment systems with timed storage, riparian shade projects, and cooling towers for each month. The thermal benefits provided by each combination of strategies was compared to the excess thermal load from the treatment plants to determine which would be likely to achieve compliance. The effect of the four treatment plants on the temperature profile of the river was also examined for each scenario. The analysis showed that no single strategy will be sufficient to fully comply with numeric temperature criteria, and that different combinations of strategies will likely be necessary in summer months as compared to fall months. Complying with numeric temperature criteria in the future will be a significant challenge for many utilities and industries and will require careful consideration of various alternatives to avoid costly actions that provide little to no benefit during the most crucial periods.

Brief Biography and/or Qualifications
Scott is a Water Resource Analyst with Clean Water Services, the sewer and stormwater utility for the Tualatin River Watershed in Oregon. He has been with Clean Water Services since September of 2017. Scott started as a hydrologist for a consulting firm in 2005 before earning a PhD in Environmental Engineering from UC Berkeley in 2012. Prior to coming to Clean Water Services, he worked for 5 years for Geosyntec Consultants in Santa Barbara, CA and Portland OR. Scott’s areas of expertise including water quality, hydrology and hydraulics, stormwater, modeling, and permit compliance. He holds current PE licenses in Oregon and California.

8:45am - 9:30am
ID: 276 / Session 27 part 1: 2
Main Technical Program
Topics: Regulatory Challenges
Keywords: 316(a), temperature, alternative, innovative, thermal

A Clean Water Act Approved Strategy for Temperature Compliance: Development of a Clean Water Act 316(a) Thermal Variance Demonstration Project

Kate Harris1, Thomas Dupuis2, Chad Wiseman2

1City of Boise, Idaho; 2HDR; ,

Temperature effluent limits are challenging to meet and several alternative compliance strategies have been litigated. Section 316(a) of the Clean Water Act provides that the EPA (and delegated state agencies) may authorize alternate thermal conditions in NPDES permits where the effluent limitation is more stringent than necessary to assure the protection and propagation of a balanced, indigenous community (BIC) of shellfish, fish, and wildlife in and on the receiving waterbody. The applicant seeking the thermal variance has the burden of making the necessary demonstration that a variance is justified. The applicant typically must conduct scientific investigations to demonstrate, either through predictive or empirical means, that a BIC is currently, and will be, maintained and protected. The City of Boise has applied for a 316(a) thermal variance and completed a demonstration project. The project consisted of a Type I demonstration based on field studies conducted to prove the “absence of prior appreciable harm” to the BIC from the City’s facilities. Three lines of evidence were used in the Type I demonstration to determine whether there are impacted aquatic communities downstream of the existing WRF discharges: comparison of RIS presence; comparison of fish and benthic macroinvertebrate community conditions; and comparison of temperature specific community metrics. Alternate thermal effluent limits (ATELs) were developed based on facility statistics and accounting for climate change. StreamTemp and thermal plume modeling (using CORMIX) were utilized for a predictive Type II demonstration that compares thermal attributes of the BIC with near and far field modeling predictions to assure that proposed ATELs will provide adequate protection and propagation of the BIC. Idaho included language in IPDES Program Development for 316(a) applicants. 316(a) is a strategy that is cleanly within the four corners of the Clean Water Act and could be a path forward for other Pacific Northwest dischargers.

Brief Biography and/or Qualifications
Kate Harris is the Water Quality Programs Manager within the Environmental Division at the City of Boise. Kate manages surface water, pretreatment and stormwater sections. She currently serves as a board member for the Lower Boise Watershed Council and is the co-chair of the Southwest Idaho Basin Advisory Group. She received her undergraduate degree from Loyola University of Chicago and her M.S. in biology (emphasis in aquatic ecology) from Central Michigan University.
Tom Dupuis has 40 years of Clean Water Act technical and regulatory experience, including NPDES permitting, TMDLs, water quality modeling and assessment, and stormwater management. He has bachelor’s and master’s degrees from Marquette University and has worked for research, state agency and consulting organizations.

9:30am - 10:15am
ID: 143 / Session 27 part 1: 3
Main Technical Program
Topics: Regulatory Challenges
Keywords: disinfection byproducts, chloramination

Developing an operating strategy to meet a stringent DBP limit

Adrienne Menniti, Peter Schauer, Rajeev Kapur, Bob Baumgartner

Clean Water Services, United States of America;

Clean Water Services (CWS) operates four treatment facilities. The largest two facilities, Durham and Rock Creek, use chlorine for disinfection. The NPDES permit requires effluent characterization for organic compounds including two disinfection byproducts (DBPS): chlorodibromomethane (CDBM) and bromodichloromethane (BDCM). Initial testing has shown the presence of these two compounds in the Durham and Rock Creek effluent, which could result in a stringent effluent limit of 0.5 ug/L. Therefore, the long-term goal is to develop an operating strategy that minimizes the formation of BDCM and CDBM and precludes the need for effluent limits for these DBPs.

Chloramine disinfection is an option for mitigating DBP formation. However, CWS also has a stringent ammonia limit during the dry summer months. Bench-scale testing conducted in summer 2017 explored the feasibility of using combined chlorine disinfection at the Durham and Rock Creek facilities while still meeting a stringent ammonia discharge limit.

Bench-scale testing showed a chlorine to ammonia nitrogen ratio of 4:1 or lower is needed to successfully keep BDCM and CDCM below the proposed discharge limit. For typical chlorine doses, this generates a needed ammonia concentration of around 1 mg/L N for the Durham facility and 0.75 mg/L for the Rock Creek facility. For the Durham facility, the chloramination ammonia concentration is slightly (0.3-1 mg/L N) lower than the ammonia limit during the driest summer months. Therefore, a tertiary ammonia dosing system is being constructed and a full-scale test of chloramination for DBP reduction will move forward for summer 2018. For the Rock Creek facility, the ammonia needed for chloramination exceeds the expected ammonia limit so alternative disinfection strategies are being explored.

The presentation will summarize the results of the bench-scale and full-scale testing of chloramination to determine how successfully both discharge limits (ammonia and DBP) can be achieved at the Durham facility.

Brief Biography and/or Qualifications
Adrienne Menniti, PhD, PE is a Senior Process Technologist at Clean Water Services. Adrienne received her bachelor’s degree in Civil and Environmental Engineering from the University of Cincinnati and her master’s and doctoral degrees from the University of Illinois at Urbana-Champaign. Dr. Menniti has ten years of experience in planning, design, optimization and troubleshooting of wastewater treatment processes.
 
8:00am - 10:15amSession 28 part 1: Process Optimization
Session Chair: Mark Cummings, Murraysmith;
Boise Centre East 410C 
 
8:00am - 8:45am
ID: 116 / Session 28 part 1: 1
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Process Control, Activated Sludge

Changing of the Guard: Taking Control of Process Control at the Lakota WWTP

Jon Kercher

Lakehaven Water and Sewer District, United States of America;

The Lakota Wastewater Treatment Plant is a 10 MGD conventional activated sludge facility serving 90,000 customers in South King County, Washington. Built in 1989, the plant has seen a few minor upgrades over its life but relied heavily on a knowledgeable and committed staff to maintain compliance for the last thirty years.

The Lakota Wastewater Treatment Plant has a long history of challenges associated with the activated sludge process that were well documented and encompassed every aspect of secondary treatment, process control and performance. The plant experienced regular bulking events for varied reasons. Chemical addition to the process to help solids settling in final clarifiers grew more frequent as long-time staff left or retired and the facility was handed over to new personnel. This attrition resulted in nearly complete turnover of the plant’s management and operations staff. With ongoing process challenges and a majority of the equipment at the plant nearing the end of its useful life, this immense loss of institutional knowledge threatened costs, consistency and even an impeccable compliance record.

This presentation will discuss how open minds and a new culture led to necessary and beneficial changes in:

• Data Acquisition Methods and Sources

• Sampling Locations and Protocols

• Process Control Evaluation

• Decision Making

The presentation will also highlight how these changes led to improved and more consistent performance and a more knowledgeable and engaged staff. The changing of the guard and a new look at process control methodology led to the highest and most consistent water quality the plant has ever produced.

Brief Biography and/or Qualifications
Jon Kercher started his career in wastewater with the Lakehaven Water and Sewer District 10 years ago in field services and is now a Senior Operator at the Lakota Wastewater Treatment Plant.

8:45am - 9:30am
ID: 218 / Session 28 part 1: 2
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Empolyee Engagement Empowerment Reducing Operating Costs

Shaving Operating Costs & Empowering Staff: Answering Why & What Ifs?

Wayne Gresh1, Gary Brelinski2

1Carollo Engineers, Inc.; 2City of Grants Pass, OR; ,

The City of Grants Pass continually seeks to empower employees to have an engaged and efficient workforce and pursues operational improvements and operating cost reductions at their Water Restoration Plant. The City has seized upon the opportunity to ask “why” and “what if” questions to make operational improvements, reduces costs, and empower staff in the process of continual improvement. The plant staff are encouraged not to follow “that’s the way we’ve always done it”. They are given the freedom to come up with ideas that can be tried and tested for savings, efficiencies, or even spend more if it improves morale and safety.

By answering “why” and “what if” questions plant staff identified over 18 measures that reduced annual operating cost by over $100,000. This included reducing UV disinfection energy cost by 66% ($46,000 in fiscal year 2017), a 55% reduction in outside laboratory service costs, and significant savings in hydrogen sulfide treatment in the collection system. Additionally, plant staff were allowed to implement miscellaneous time saving measures that resulted in an annual savings of over $7,000. Recently the City provided credit cards to all staff to empower them to reduce cost and time associated with purchase orders on small item purchases.

The City has also taken advantage of grants from the Energy Trust of Oregon to reduce the costs for new UV disinfection equipment by $207,000 and new aeration system blowers by $126,000. And the City is using Progressive Design-Build delivery to implement a $23 M upgrade to the plant to achieve efficiency in design, construction, and commissioning.

This presentation highlights how answering “why” and “what if” questions and empowering staff has led to significant operational improvements and annual operating cost reductions.

Brief Biography and/or Qualifications
Gary Brelinski, Jr., City of Grants Pass, OR WRP Superintendent
Gary became superintendent of the Water Restoration Plant in 2014. He holds a Grade IV operator certification.

Wayne Gresh, P.E., Project Manager, Carollo Engineers, Inc.
Wayne has over 35 years of wastewater facility planning, design, and construction experience. For the past five years he has helped the City of Grants Pass reduce operating costs at the Water Restoration Plant.

9:30am - 10:15am
ID: 267 / Session 28 part 1: 3
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Operator Innovation, Energy Efficiency, Cold-weather Nitrification

Challenges of Addressing Capacity Limitations and Nutrient Removal in Rural Communities

William Leaf

Jacobs/CH2M, United States of America;

Small communities around Alaska are facing challenges recently encountered by many utilities in the Pacific Northwest. Updating aging equipment and facilities combined with nutrient removal requirements and associated capacity limitations present significant issues for rural communities. These communities greatly benefit from cost-effective, energy-efficient systems, but have challenges in securing funding for the required projects. Communities around rural Alaska have not recently experienced high levels of growth, and future projections do warrant major investment in the existing infrastructure to accommodate additional capacity. These facilities typically rely on the expertise and innovation of the operations staff to continue maintaining these, meeting the required treatment goals.

The Kenai, AK Wastewater Treatment Plant (WWTP) is used as a case study for the challenges facing rural communities. The WWTP was originally constructed in the early 1980s, consisting of a complete-mix activated sludge system with an overall capacity of 1.3-mgd on an average day maximum month (ADMM) condition. The facility was not originally designed to provide nitrification, and historically was only operated to remove biochemical oxygen demand (BOD) and total suspended solids (TSS). The new effluent permit requires a level of ammonia-nitrogen removal in the system, leading to a new operational approach at the facility. The operations staff where able to change their approach to reliably meet their effluent ammonia-nitrogen limit through 2017, potentially helping the City save a significant amount of capital investment. A discussion on how the deferment of this capital investment is advantageous to the City will be presented. The deferment, in part, allows for an energy-efficient project to be completed in the near-term for additional savings to the City. The evaluation of the system details the associated “nitrification” capacity in the WWTP given the updated operational approach, and how this relates to the original design capacity of the system together with the associated growth implications.

Brief Biography and/or Qualifications
William Leaf is a Principal Technologist with CH2M HILL, specializing in wastewater treatment projects (planning, design, and plant optimization). He has worked in the industry for 23 years and is based in Boise, Idaho.
 
8:00am - 10:15amSession 29 part 1: Capital and Delivery
Session Chair: Dick Talley, Stantec;
Boise Centre West 120B 
 
8:00am - 8:45am
ID: 146 / Session 29 part 1: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: Loan, WIFIA, Financing, Application, EPA

Benefits of Financing with a WIFIA Loan

Karen Fligger, Kevin McDonald

US EPA, United States of America; ,

The Water Infrastructure Finance and Innovation Act (WIFIA) loan program is EPA’s newest financing opportunity for water and wastewater infrastructure projects. In the spring 2018, the WIFIA program closed its first loan with King County Washington for $134.5 million. Using the King County loan as an example, the presenters from the WIFIA program will key aspects of the loan program.

First, the presenters would provide basic program information, including eligibility, key financial terms, and federal loan requirements. Then, they will walk through the potential financial benefits of WIFIA financing. Using the King County loan as an example, they will explain how borrowers take advantage of the low interest rates and flexible financial terms that the WIFIA program can offer. Finally, the presenters will walk through the application process for future funding rounds. This will include information on how projects are selected to apply for a WIFIA loan and tips for completing a successful letter of interest.

Congress established the Water Infrastructure Finance and Innovation Act (WIFIA) program at EPA in 2014 and appropriated funding for loans in 2017. The WIFIA program's mission is to accelerate investment in our nation's water and wastewater infrastructure by providing long-term, low-cost supplemental credit assistance under customized terms to creditworthy water and wastewater projects of national and regional significance.

Brief Biography and/or Qualifications
Karen Fligger is a senior project manager for the WIFIA (Water Infrastructure Finance and Innovation Act) Program in EPA’s Office of Wastewater Management. Over her 12-year career at EPA, she has worked on the Clean Watersheds Needs Survey, the WaterSense program, and other infrastructure related projects.

Kevin McDonald joined EPA as an underwriter for the WIFIA program in EPA's Office of Wastewater Management in 2017. Prior to joining EPA, he worked for a similar Federal Credit program at the Department of Transportation called TIFIA.

8:45am - 9:30am
ID: 261 / Session 29 part 1: 2
Main Technical Program
Topics: Capital and Delivery
Keywords: business case evaluation, capital improvement

Continuous Improvement in Capital Improvement

Michael Comeskey1, Lorena Croucher2

1City of Boise Public Works; 2Brown and Caldwell; ,

As part of the City of Boise’s facility planning project, the City’s Public Works Department is updating their business processes for prioritizing capital investments. Over the next seven years, the Water Renewal Fund is projected to spend $130 million in capital to address new regulations, capacity, and aging infrastructure. These and other future investments will require a more robust process to best prioritize actions, sustain assets, manage risks, and effectively communicate actions to stakeholders.

The City developed and adopted a capital planning process focused on efficiently and systematically correlating decisions to broader utility goals to create a repeatable and defensible decision-making process. The City began this process by establishing measures and metrics for nine utility-wide level of service goals, ranging from staff development to regulatory compliance, that were then used to develop approximately 100 standardized risks and benefits. These risks and benefits are then integrated into a business case evaluation (BCE) that evaluates the total cost of asset ownership for project alternatives. This process has been consolidated into a user-friendly tool that can be used by staff across the utility and allows for a repeatable project evaluation process.

Boise began to use the results of the business cases to inform the prioritization of its capital improvement plan. Projects are ranked based using a risk-based metric that normalizes the risk reduction (or benefit gain) per dollar of capital and operating investment. Projects are selected for funding based on this metric. This provides a consistent methodology to compare seemingly dissimilar projects across the utility.

The City’s revised capital planning approach optimizes the capital improvement plan to meet its internal and external needs. This presentation will focus on the creation, adoption, and implementation of the City’s new business processes and lessons learned.

Brief Biography and/or Qualifications
Michael Comeskey is the Capital Improvement Program Manager for the City of Boise Public Works Department. He is leading the capital improvement, facilities planning, and strategic asset management programs for the City’s Water Renewal Services utility. His experience includes utility management, asset management, business operations, and leading innovation in utilities.

Lorena Croucher is a civil engineer at the Brown and Caldwell (BC) Boise office. She works closely with the City of Boise’s Public Works Department through the facilities planning process, providing programmatic support by developing documentation of updated business processes for the City’s Water Renewal Services utility. In addition, her experience includes wastewater treatment system process/mechanical design and water quality modeling.

9:30am - 10:15am
ID: 209 / Session 29 part 1: 3
Main Technical Program
Topics: Capital and Delivery
Keywords: BioMag, eliminate primaries and digesters

Less is More - Where Design Meets Operations & Management to Increase Capacity

Ray Busch1, Bhargavi Ambadkar2, Jeff McCormick2, Steve Flett3, Andy McCaskill4

1City of Klamath Falls; 2Carollo Engineers; 3Stantec/Slayden; 4HDR Engineering; ,

The City of Klamath Falls owns and operates the Spring Street Sewer Treatment Plant (STP) under administrative extension of their 1997 National Pollutant Discharge Permit (NPDES) permit. A plant upgrade to meet potential permit requirements was identified in the Facilities Plan effort completed in 2009 and updated in 2017. The upgrades identified included: expanded headworks facilities, improved primary treatment, improved activated sludge process to address redundancy and future effluent standards, addition of tertiary processes to address regulatory requirements to remove phosphorus, and improved solids stabilization and management. The estimated cost for the overall project were updated for the recommended upgrades and additional costs were added to to address structural and geotechnical issues identified in recent investigations. The resulting preliminary project cost estimate was approximately $46 million (Base Case Alternative). The City’s upper threshold without increasing rates to the citizens was $35 million.

A complete review of the recommendations of the Base Case Alternative was completed to reduce cost while providing reliable, redundant facility for operations. This review included:

• Facility cost saving measures which identified Base Case design modifications,

• Process alternatives that investigated a range of tried-and-trusted process alternatives to new innovative ideas, and

• Effluent management options to identify alternatives that can eliminate construction of nitrification and phosphorus removal facilities at the treatment plant.

Based on the options identified, a ballasted activated sludge process (BioMag®) will be constructed along with new dewatering facilities. BioMag® allows for a higher biomass concentration than a conventional suspended growth culture by physically improving settling velocities with a weighted ballast material. The implementation of BioMag® limits the expansion of the secondary facilities while eliminating the need for new primary clarifiers or digesters. This option allows the City to provide reliable, robust treatment with sufficient process and equipment redundancy for the Operators, and meet City’s Management goals and objectives by staying within the original project budget.

Brief Biography and/or Qualifications
Jeff McCormick has 25 years of experience in the planning, design, and construction of a variety of primary, secondary, tertiary, and solids treatment facilities. He also has experience in the evaluation of the application of emerging technologies for maximizing flows on constrained sites. Jeff has worked with numerous agencies throughout Oregon, Washington, and California and has successfully managed municipal wastewater projects with a completed construction value of more than $100 million.

Bhargavi Ambadkar has 14 years of experience in serving as a project manager/engineer for various municipal wastewater treatment facility planning and design, pump station design projects in Oregon.
 
8:00am - 10:15amSession 30 part 1: Resource Management
Session Chair: Andrew Matsumoto, Civil West Engineering Services;
Boise Centre East 430 
 
8:00am - 8:45am
ID: 297 / Session 30 part 1: 1
Main Technical Program
Topics: Resource Management
Keywords: Reuse Pipeline, Compliance, Nutrients, Private Partnership, Public Education

Sewer District Implements Private/Public Reuse System

David Watkins1, Colt Shelton1, Brett Converse1, Dale Caza2

1J-U-B Engineers, Inc.; 2Payette Lakes Recreational Water and Sewer District; ,

The Payette Lakes Recreational Water and Sewer District (PLRWSD) is implementing a collaborative private/public solution for their effluent disposal via reuse. The system includes 1,140 acres of reuse sites (within 2,000 acres of privately owned ag land) split into 22 hydraulic management units, seven miles of reuse pipe, and turnout structures that allow reuse or irrigation water onto the reuse sites. This presentation will go over the history of how this solution was developed, the key points of a private/public partnership, and the technical details of a large reuse system. The transition out of a long term compliance agreement and into a reuse permit has been a long journey and is a cautionary tale for facilities looking at voluntarily, or involuntarily, giving up waste load allocations. There are important features with a private partnership that are critical for a positive working relationship and overall long term success. Private ranchers and farmers value the water and nutrients but they are not worth too much inconvenience. Overall, this type of solution required substantial effort in technically analyzing alternatives, years of political discussions, public involvement, relationship building, and financial commitment. In the end, this solution will provide the District Patrons with a cost effective long-term solution and improves upon the existing system with regards to compliance, operation, and future expansion.

Brief Biography and/or Qualifications
David Watkins, P.E., is a professional engineer in the Moscow, ID office of J-U-B Engineers, Inc. He has worked in the field of water, wastewater, and sewer for over eight years and has been the PLRWSD District Engineer for the last five years.

Brett Converse, P.E., Ph.D., is a professional engineer in the Sandpoint, ID office of J-U-B Engineers, Inc. He has worked closely with the PLRWSD as a technical advisor and compliance expert for the last ten years.

8:45am - 9:30am
ID: 240 / Session 30 part 1: 2
Main Technical Program
Topics: Resource Management
Keywords: Recycled Water, Ammonia Treatment, NPDES Limits, Land Application, Winter Storage

Treated Wastewater - An Asset In Ashton, Idaho

Marvin Fielding

Keller Associates, United States of America;

The City of Ashton, Idaho recently received a new NPDES permit with ammonia limits that were not attainable with the City’s existing wastewater lagoons. The City discharges to the Henrys Fork during the winter and uses treated wastewater for irrigation during the summer. The City commissioned a wastewater facility planning study to evaluate treatment and disposal alternatives. Enhanced treatment alternatives included aerated lagoons or fixed-film media to facilitate nitrification of the ammonia. Another alternative was to store treated wastewater during the winter and use it for irrigation during the summer.

The decision by the City of Ashton boiled down to looking at the problem from a regulatory perspective. Under mounting pressure from environmental stakeholders, NPDES requirements for nutrient removal are becoming increasingly strict, and in this regulatory environment, treated wastewater is viewed by municipalities as an expensive liability. However, when treated wastewater can be used for irrigation, nutrients that are problematic under NPDES requirements can now be put to beneficial use.

The City of Ashton elected to construct a winter storage lagoon and land apply rather than spend additional resources on treatment. Wastewater reuse can be an attractive alternative for communities faced with strict nutrient removal requirements. Treatment prior to reuse can be straight-forward and achievable for most wastewater systems. Treated wastewater can also be used to irrigate crops that can be harvested and sold to help offset other operating costs.

Brief Biography and/or Qualifications
Marvin Fielding, P.E., Project Manager for Keller Associates, Inc.

Marvin has 17 years of experience in water resources engineering. He has managed the planning, design, and construction of municipal infrastructure projects valued at up to $11 Million. He enjoys helping communities find cost-effective solutions to their wastewater and drinking water needs. He graduated from Utah State University with a Bachelor’s degree in Civil Engineering and is a licensed professional engineer in Idaho, Wyoming, and Utah.

9:30am - 10:15am
ID: 219 / Session 30 part 1: 3
Main Technical Program
Topics: Resource Management
Keywords: aquifer recharge, effluent management

A Tale of Two Wells: A Review of Operational Data From Sedona's First Two Direct Aquifer Injection Wells

Brad Jeppson, Roxanne Holland

Carollo Engineers, United States of America;

The City of Sedona, Arizona Wastewater Department, like many utilities, has made significant investments to improve the beneficial and sustainable use of Class A+ tertiary effluent from its 2.0 mgd Wastewater Reclamation Plant (WWRP). Historically, the City has employed a number of on-site effluent management strategies, including percolation basins, spray-irrigation, and wetlands. Any of these strategies alone poses significant challenges in consistently providing adequate effluent management capacity, especially during colder winter months. Therefore, the City conducted an evaluation to identify effluent management strategies that could consistently provide for effluent management capacity year-round. This evaluation resulted in a recommendation to implement a network of direct aquifer injection wells.

In 2015/2016, the first two injection wells were drilled and tested. Injection tests lasting several weeks indicated the wells could achieve sustainable injection capacities of approximately 250 gpm each.

The wells were then equipped in 2017. Well 2 was equipped with a vertical turbine deep well pump, and the other with injection tubes (no pump due to a misaligned well casing).

One significant challenge with maintaining injection capacities is clogging, whether it is induced biologically, by sediments, or entrained air. Various methods were used to mitigate clogging, including the use of sodium hypochlorite, filtration, regular backflushing, and an innovative strategy referred to as "reverse siphon".

The first several months of operational data indicates average recharge rates of 240 gpm (Well 2). Typical cycles between back-flushing Well 2 are approximately 15 days. Well 1 is used infrequently and has not yet been back-flushed, since it would require the removal of the injection tubes.

This paper will review the lessons-learned, performance data, and discuss operational strategies to optimize recharge performance.

Brief Biography and/or Qualifications
Mr. Jeppson is an Associate Vice President and Project Manager with Carollo Engineers in Boise Idaho. He has 18 years of experience developing solutions for a a wide range of wastewater treatment, resource management, and water reuse challenges.
 
8:00am - 10:15amSession 31 part 1: Data Collection and Use
Session Chair: Mia Sabanovic, City of Portland/Bureau of Environmental Services;
Boise Centre West 120A 
 
8:00am - 8:45am
ID: 115 / Session 31 part 1: 1
Main Technical Program
Topics: Regulatory Challenges, Wastewater Treatment Processes, Facility Operations and Maintenance
Keywords: Analysis, Testing, Data, Optimization

Water Quality Testing: Online Analyzers vs. Traditional Methods for TOC, COD and More

Sean Thomson, Katerina Messologitis

Stantec, United States of America; ,

Real-time data and monitoring is becoming ever more valuable in the water and wastewater industry where treatment performance optimization and regulatory compliance go hand in hand. Traditional water quality analysis methods such as onsite testing, HACH® kits, and offsite laboratory sampling are being challenged with state-of-the-art online equipment such as the Liquid Analytical Resource (LAR®) and Endress-Hauser ISEmax® probes. These are automated equipment designed to provide live data, reduce staffing needs for on-site testing and the time delays associated with certified laboratories. They provide fast results for COD, ammonia, nitrate, total nitrogen, TOC, total carbon and more. Additionally, these and other online analyzers can provide process control and even predictive analytics, possibly warning plant staff of potential issues hours before the problem occurs, thus saving time and reducing maintenance. This presentation compares the pros and cons of traditional versus new technology, precision of results, costs, testing duration, staffing, training/maintenance of equipment, and hazardous waste disposal. This presentation serves as a preliminary, third party guide to help industry and municipalities further develop their chemical analysis and monitoring needs.

Brief Biography and/or Qualifications
Sean Thomson has worked for Stantec for two years and has been primarily involved in the design and onsite operation of an industrial wastewater treatment pilot project where he had first hand experience with water quality analysis, maintenance, experiments, planning and reporting. He has also assisted with several local proposals and general civil design projects. Previously, he worked for a short time in the remediation engineering sector.

Sean holds a Masters degree in Civil and Environmental Engineering from California Polytechnic State University, San Luis Obispo where he presented his thesis on the fixed film anaerobic digestion of flush barn dairy waste and designed and piloted a digester in the field for one year.

Katerina Messologitis has worked at Stantec for one year primarily with a team of process engineers who operated a proof of concept pilot plant testing the efficacy of an industrial wastewater treatment and reclaim facility. From this work, Katerina has developed a well-rounded understanding of online analyzers and instruments. She conducted daily water quality tests using bench-top methods to analyze the process performance and validate online analyzer measurements.

Katerina has a Masters degree in Civil Engineering from the University of New Hampshire. She conducted a pilot study on the feasibility of using electrodialysis for the recovery and reuse of concentrated brines from advanced water treatment.

8:45am - 9:30am
ID: 272 / Session 31 part 1: 2
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Nutrient Removal, Chemical Treatment, Pilot Studies, Operational Cost Savings

Saving Dollars at Dixie: Chemical Optimization at Boise’s Dixie Drain Phosphorus Removal Facility

Don Bloomquist, Brooke Favillo

Brown and Caldwell, United States of America; ,

The Dixie Drain Phosphorus Removal Facility (DPRF) is a treatment facility with the goal of reducing non-point source phosphorus. The facility diverts water from the Dixie Slough, treats it for solids and phosphorus, and discharges the treated water back into the Dixie Slough upstream of the Boise River. During startup, the City of Boise (City) undertook a Chemical Optimization program focused on minimizing chemical treatment costs and optimizing the treatment process. Six coagulants were tested to determine:

• The overall phosphorus removal capability of the Facility.

• The dose at which each coagulant removed 70% of the total phosphorus entering the facility; and use this data to allow the City to develop a Request for Proposal for chemical suppliers.

• The effects other water quality parameters have on phosphorus removal efficiency and to determine which of these can be manipulated or monitored to create a more efficient facility. Outside of phosphorus and temperature measurements, this study included collecting data for: flow rate, total suspended solids, pH, conductivity, alkalinity, aluminum concentration, chloride concentration, and total organic carbon.

With coagulant dosing around 5 mg/L and flowrates through DPRF around 65 mgd, small reductions in chemical usage can result in big savings to the City’s bottom line. This presentation will focus on the data analysis to determine coagulant effectiveness and optimization as well as the solids production and handling. Additionally, the presentation will examine DPRF’s performance of the facility during its first full year of operation (2017).

All chemicals tested exceeded the 70% phosphorus removal target at different dosages, resulting in different projected chemical volumes necessary to meet the City’s phosphorus removal goals. The results helped the City develop an RFP specific to each chemical’s observed performance, producing competitive bids.

Brief Biography and/or Qualifications
Don Bloomquist is a water/wastewater engineer with 8 years of experience working out of Brown and Caldwell's Boise office. Don served as a project engineer and assistant project manager from the preliminary engineering of Dixie Drain through project construction and startup.

Brooke Favillo is a water/wastewater engineer with 2 years of experience working out of Brown and Caldwell's Boise office. Brooke has experience with wastewater process design and modeling and performed the data analysis for Dixie Drain's Chemical Optimization program.

9:30am - 10:15am
ID: 150 / Session 31 part 1: 3
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Turbidity meters, Membrane Integrity, Indirect Potable Reuse, Direct Potable Reuse, MBRs

Using Low Level Turbidity Meters for Monitoring Continuous Membrane Integrity in MBRs

Dave Commons1, Frazier Speaks2, Adrian Edwards3, Steve Myers4

1Hach, United States of America; 2City of North Las Vegas, NV; 3City of Henderson, NV; 4Hach, United States of America;

Turbidity meters have been used for years to determine membrane integrity in MBR facilities. There has been a concern about how accurately and how quickly these turbidity readings reflected failures of membrane integrity. It has become critical to find relatively cheap, effective, accurate, and rapidly responding processes that demonstrated continuous membrane integrity especially as we approach more facilities that want to use their recycled wastewater for indirect and direct potable reuse (IPR, DPR).

Side by side plant comparison between traditional turbidity meters and new more accurate and rapidly responding meters have been conducted at sites in California, Texas, Washington, and Nevada to determine the accuracy, efficiency, and rapid response of turbidity meters in MBR process operations. The efficiency of MBRs to remove bacteria, pathogens, and viruses were also evaluated.

The results of this study will demonstrate how the new low level turbidity meters can be used as an accurate representative of membrane integrity which could be used to give continuous assurance of MBR membrane integrity in both IPR and DPR situations.

Brief Biography and/or Qualifications
Dave N. Commons. Over 30 yrs wastewater operations experience. 15 yrs MBR experience. AA, BA, MDiv, MRE degrees with 55 semester hrs in water and wastewater technology. Nevada Grade IV, California Grade V and Georgia Grade I Wastewater certifications (all highest). Member Select Society of Sanitary Sludge Shovelers, WEF Quarter Century Operators, recipient of William D. Hatfield Award.
 
9:00am - 11:00amPNCWA Past Presidents Breakfast

By Invitation only

Boise Centre East 420A 
9:30am - 10:30amWater For People Committee Meeting
Boise Centre West 140 
10:30am - 12:00pmSession 25 part 2: Resiliency/Preparedness
Session Chair: Jeffrey A. Lundt, King County Wastewater Treatment Division;
Boise Centre East 420B 
 
ID: 338 / Session 25 part 2: 1
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Emergency Preparedness, WARN, Cyber Secutity, Physical Security, EAP

Emergency Preparedness Part IV

Jeffrey A. Lundt1, Bill Carr2

1King County Wastewater Treatment Division, United States of America; 2Suez; ,

The goal of this full day, pre-conference workshop is to provide a basic understanding of emergency preparedness, and the response of water and wastewater utilities in the event of emergencies and disasters. Assessing risks, planning and preparedness will lead to utilities that function better in emergencies, work more efficiently to restore service to customers and are better able to maintain water and environmental quality.

An outline of the segments of the workshop follows:

Section 0 – Introduction

Section 1 - Water Utility Emergencies - Discussion of the variety of emergencies that can affect water and wastewater utilities

Section 2 - Emergency Case Studies -Review of two or three emergencies that serve as examples of what can go wrong and how the utility responded

Section 3 - Emergency Action Plan - Discussion of an Emergency Action Plan (EAP) and how to develop one

Section 4 - Risk & Resilience - Introduce to the concepts of risk and resilience, how to quantify and how to compare

Section 5 - Incident Command System (ICS) - Introduction to the Federal Emergency Management Agency Incident Command System elements and process

Section 6 - Public Outreach During Emergencies - To provide an understanding of how to work with the public during an emergency to keep them informed, safe and reduce misinformation and panic

Section 7 – Business & Operational Continuity - Provide an overview of what needs to be considered in maintaining a water or wastewater utility during the immediate aftermath and recovery

Section 8 - Water/Wastewater Agency Response Network (WARNs) – Introducing the WARN organization and purpose

Section 9 – Tabletop & Field Exercises, Other Training – Discussion of how to organize and run emergency preparedness planning and practice tools including who to involve, public notice and participations, logistics how to evaluate outcomes

Section 10 – Personal Preparedness - Discussion of the planning and preparation that utility employees and their families should undertake

Section 11 – Facility Security - To outline ways to review security of facilities and highlight some typical security measures

Section 12 – Cyber Security - Develop a list of realistic vulnerabilities for your system and to identify possible mitigation measures

Brief Biography and/or Qualifications
Jeff Lundt is a Principal Wastewater Engineer with King County Wastewater Treatment Division. He is responsible for planning and design of a variety of WWTP processes. He is a professional engineer in 5 states and has been designing and overseeing construction of public works projects for nearly 42 years. He received the 2018 Government Engineer of the year Award from the Puget Sound Engineering Council in February. In addition to his work at WTD, Jeff is responsible for preparing training curricula that is used by the Pacific Northwest Section AWWA.

ID: 339 / Session 25 part 2: 2
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Emergency Preparedness, WARN, Cyber Secutity, Physical Security, EAP

Emergency Preparedness Part V

Jeffrey A. Lundt1, Bill Carr2

1King County Wastewater Treatment Division, United States of America; 2Suez; ,

The goal of this full day, pre-conference workshop is to provide a basic understanding of emergency preparedness, and the response of water and wastewater utilities in the event of emergencies and disasters. Assessing risks, planning and preparedness will lead to utilities that function better in emergencies, work more efficiently to restore service to customers and are better able to maintain water and environmental quality.

An outline of the segments of the workshop follows:

Section 0 – Introduction

Section 1 - Water Utility Emergencies - Discussion of the variety of emergencies that can affect water and wastewater utilities

Section 2 - Emergency Case Studies -Review of two or three emergencies that serve as examples of what can go wrong and how the utility responded

Section 3 - Emergency Action Plan - Discussion of an Emergency Action Plan (EAP) and how to develop one

Section 4 - Risk & Resilience - Introduce to the concepts of risk and resilience, how to quantify and how to compare

Section 5 - Incident Command System (ICS) - Introduction to the Federal Emergency Management Agency Incident Command System elements and process

Section 6 - Public Outreach During Emergencies - To provide an understanding of how to work with the public during an emergency to keep them informed, safe and reduce misinformation and panic

Section 7 – Business & Operational Continuity - Provide an overview of what needs to be considered in maintaining a water or wastewater utility during the immediate aftermath and recovery

Section 8 - Water/Wastewater Agency Response Network (WARNs) – Introducing the WARN organization and purpose

Section 9 – Tabletop & Field Exercises, Other Training – Discussion of how to organize and run emergency preparedness planning and practice tools including who to involve, public notice and participations, logistics how to evaluate outcomes

Section 10 – Personal Preparedness - Discussion of the planning and preparation that utility employees and their families should undertake

Section 11 – Facility Security - To outline ways to review security of facilities and highlight some typical security measures

Section 12 – Cyber Security - Develop a list of realistic vulnerabilities for your system and to identify possible mitigation measures

Brief Biography and/or Qualifications
Jeff Lundt is a Principal Wastewater Engineer with King County Wastewater Treatment Division. He is responsible for planning and design of a variety of WWTP processes. He is a professional engineer in 5 states and has been designing and overseeing construction of public works projects for nearly 42 years. He received the 2018 Government Engineer of the year Award from the Puget Sound Engineering Council in February. In addition to his work at WTD, Jeff is responsible for preparing training curricula that is used by the Pacific Northwest Section AWWA.
 
10:30am - 12:00pmSession 26 part 2: Collections Systems
Session Chair: Jeremy Coles, City of Rexbrg;
Boise Centre East 410A 
 
10:30am - 11:15am
ID: 125 / Session 26 part 2: 1
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: CIPP, trenchless, rehabilitation, pipeline, UV

UV-Light Cured CIPP Lining for Pipeline Rehabilitation

Jeff Maier, Chris Larson

C&L Water Solutions, Inc., United States of America;

A technical overview of the cured in place pipe (CIPP) lining process, the most common method for trenchless rehabilitation of sewer pipelines, is presented. In particular, advantages of using ultra-violet light cured, glass reinforced CIPP lining (UV-CIPP) for wastewater applications where infiltration and wet pipe conditions are present will be discussed. Higher strength materials, pre-inspection capabilities, thinner lining design, verifiable cure and no styrene release are all features of UV-CIPP that provide the customer with a high quality lining product. Design and specification considerations, installation procedures, quality assurance/ quality control measures, and inspection will be covered. Case studies in the Salt Lake City area where UV-CIPP is being utilized as the preferred lining solution will be presented, and will include discussion of the North Davis Sewer District’s CIPP Lining Program, one of the largest UV-CIPP lining programs in North America to date.

Brief Biography and/or Qualifications
Jeff Maier, P.E. is the Director of Engineering at C&L Water Solutions, a leading trenchless contracting firm serving the Rocky Mountain and Pacific Northwest regions. He is responsible for providing in-house engineering assistance and technical expertise for water and wastewater infrastructure condition assessment, trenchless rehabilitation and new construction applications. He is a Colorado and Utah registered professional engineer, a graduate of the University of Michigan, and has over 18 years of project management and engineering design experience. Jeff is recognized as an expert in the fields of advanced condition assessment and trenchless rehabilitation of pipelines, manholes, and wastewater structures, and currently serves on the NASTT national board of directors.

11:15am - 12:00pm
ID: 234 / Session 26 part 2: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Collections, Rehabilitation, CIPP, Prequalification, Large Diameter

Bend's Plant Interceptor – Extending the Life of the City’s Primary Means of Conveyance

Robert Lee1, Jason Suhr2

1Murraysmith, Portland, Oregon; 2City of Bend, Bend, Oregon; ,

As one of the fastest growing cities in the Northwest, the City of Bend (City) serves over 90,000 customers and is committed to effective management of its wastewater collection system to deliver highly reliable conveyance service. In 2013, the City completed the inspection of the Plant Interceptor (PI), the sole means of wastewater conveyance for the City to the Water Reclamation Facility (WRF). The inspection of the 20,000 LF of 36-inch and 42-inch reinforced concrete sewer pipe revealed that in the 8 years since the prior inspection, the PI had experienced significantly more deterioration with some areas in critical structural condition.

In 2017, the City moved forward with the design of a trenchless rehabilitation effort to extend the life of the PI at less than half the cost of replacement. Cured-in-place pipe (CIPP) was ultimately selected as the rehabilitation method of choice. The project was designed and advertised allowing the use of traditional thermal-cured CIPP as well as ultraviolet light-cured CIPP. A quantitative prequalification process was utilized to streamline the bidding process and ensure qualified bidders were attracted to the project. The bypassing of flows for such a critical pipeline was complicated and specifically designed such that the construction contractors knew the expectations prior to bidding the work. The design effort also involved numerous stakeholder interactions, including private property owners, public lands, and federal agencies. Construction efforts will be largely in the summer of 2018.

Building on the 2013 PNCWA presentation on the PI condition assessment work, this presentation will discuss the constraints and challenges during design, the outreach and permitting efforts, the rehabilitation technologies evaluated, the selection of both thermal and UV CIPP, the prequalification process that was developed and utilized to attract and ensure qualified bidders, and the lessons learned during construction. Attendees will learn about the nuances of CIPP (design and construction), how this technology can be implemented with great success to address our infrastructure challenges, and strategies to generate the most interest in a limited bidding community in the Pacific Northwest.

Brief Biography and/or Qualifications
Robert Lee is a Principal Engineer with Murraysmith in Portland, Oregon. He is a graduate of Cornell University with both a Bachelor's and a Master's in Environmental Engineering. He is a licensed Professional Engineer with over 20 years of experience focused largely on municipal collections and conveyance systems.
 
10:30am - 12:00pmSession 27 part 2: Regulatory
Session Chair: Heather Rankin, City of Boise;
Boise Centre East 410B 
 
10:30am - 11:15am
ID: 278 / Session 27 part 2: 1
Main Technical Program
Topics: Regulatory Challenges
Keywords: permits, nutrients, regulations, nitrogen, phosphorus

Easing the Transition: Innovative Regulatory Frameworks, Compliance Strategies, and Treatment Technologies for Nutrient Removal

Dave Clark, Bryce Figdore

HDR; ,

New or increasing nutrient removal requirements pose challenges on water resource recovery facilities. Historical utility engagement in the regulatory process tended to be passive, often resulting in unnecessarily stringent discharge limits and reactionary facility management decisions. More recently, increased utility engagement in the regulatory process has eased nutrient removal transitions in such circumstances. Greater knowledge transfer and consideration of the risks and benefits of technology adoption, technology performance statistics, and nutrient speciation and bioavailability have led to more flexible permit structures. Such permits recognize inherent process performance variability, provide more time to adapt and test promising new technologies and plant optimization strategies, and credit nutrient removal achieved prior to compliance deadlines.

A number of new approaches to nutrient discharge permitting provide compliance flexibilities for wastewater utilities, while at the same time protecting receiving water quality and providing the opportunity to explore and implement new treatment technologies. Some of these new approaches break the traditional mold of NPDES permitting that is largely based on control of toxics. Now a new variety of creative approaches to nutrient permitting are available for reference for both regulatory agencies and wastewater utilities. These permitting frameworks illustrate the range of flexibilities available within the confines of the Clean Water Act and existing regulations.

Recent experience and widespread application of advanced nutrient removal technologies has furthered the understanding of how low we can go and how to optimize existing facilities. At the same time, new technologies are available to enhance and intensify the treatment process. This is occurring at a time when new regulatory approaches provide an opportunity to apply these new tools.

This presentation will focus on the interface of innovative regulatory structures, compliance strategies, and treatment technologies for nutrient removal. Considerations pertaining to nutrient removal technology performance statistics and effluent nutrient speciation on will be reviewed. Case studies and examples from Colorado and the San Francisco Bay area will be presented. Well-established nutrient removal solutions will be compared to solutions using emerging technologies and adaptive management made possible by utility engagement and the “next generation” of permits.

Brief Biography and/or Qualifications
David L. Clark is Senior Vice President and serves as HDR Engineering, Inc.’s Market Sector Director for Wastewater. He has more than 37 years of consulting experience and currently leads strategic efforts in understanding wastewater regulatory issues as they affect wastewater utilities. Mr. Clark is the regulatory liaison for the Water Research Foundation (WRF) nutrient research program and the lead author on regulatory issues. He recently published a report on Nutrient Discharge Permitting Frameworks for WRF addressing wastewater utility issues with surface water discharges. Mr. Clark conducted a review of advanced treatment technology and cost implications resulting from Washington human health criteria rulemaking for toxics addressing polychlorinated biphenyls (PCBs), mercury, arsenic, and polycyclic aromatic hydrocarbons in work for the Association of Washington Business, Association of Washington Cities, and Washington State Association of Counties.

Bryce Figdore is a wastewater process engineer with HDR based in Bellevue, WA. He has a Bachelor’s degree from The Pennsylvania State University, a Master’s degree from Villanova University, and a PhD from the University of Washington where his work focused on granular activated sludge. Bryce is enthusiastic about applying his expertise in biological nutrient removal to deliver innovative and robust solutions to protect water quality and astutely manage water resources. Occasionally he can be found exploring the great Pacific Northwest, most likely while fly fishing or hiking with his family.

11:15am - 12:00pm
ID: 160 / Session 27 part 2: 2
Main Technical Program
Topics: Regulatory Challenges
Keywords: Puget Sound, Nutrients, NPDES, Nitrogen, Permits

Puget Sound Nutrient Source Reduction Project: What Is It and How Will It Affect My Permit?

Eleanor Key

WA State Department of Ecology, United States of America;

Puget Sound can naturally have low dissolved oxygen in many locations during the year, but Ecology has found that the sum of localized anthropogenic sources are creating additional dissolved oxygen deficits causing exceedances of the State’s water quality standards. Low DO concentrations and other effects of eutrophication from increasing nitrogen loading negatively impact aquatic life. Ecology, in conjunction with the Pacific Northwest National Laboratory, is working with an advanced computer model to evaluate the impact of nitrogen and carbon from both point and nonpoint sources. Results of this model will inform the Puget Sound Action Agenda and help the Water Quality Program develop potential solutions for reducing nutrients and improving the Sound’s resiliency to resist negative effects of climate change which amplify DO problems during drought conditions. Over the course of the next few years, we will be engaging tribes, stakeholders and the general public to collaboratively develop and implement a plan for achieving marine water quality standards while preserving growth in the region.

Completion of bounding model scenarios to frame the DO problem will be run through 2018. Starting in 2019, Ecology will evaluate suites of load reduction scenarios. The approach will target both point and non-point sources of dissolved inorganic nitrogen in addition to carbon. Through modeling nutrient reduction scenarios, Ecology, informed by a comprehensive public advisory process, will be able to make a decision on the most appropriate nutrient reduction strategy for point and non-point sources. This presentation will provide an overview of the nutrient reduction approach including major project milestones, bounding scenarios and Salish Sea model results, proposed optimization scenarios and different options for regulating point source contributions to the Sound.

Brief Biography and/or Qualifications
Eleanor is a Senior Engineer in Ecology’s Water Quality Program in Olympia, WA. In this position, Eleanor serves as a technical permitting and policy lead where she works with permitting staff from all of Ecology’s regions to implement new regulations and develop solutions to complex permitting problems. Prior to joining Ecology’s headquarters in fall of 2016, Eleanor was most recently a staff engineer in the Eastern Regional Office. In Spokane, Ellie wrote and managed NPDES permits for approximately 20 municipal facilities of various sizes. Ellie hold a B.S. in Environmental Engineering from the Colorado School of Mines and a M.S. in Environmental Engineering from Washington State University.
 
10:30am - 12:00pmSession 28 part 2: Process Optimization
Session Chair: Mark Cummings, Murraysmith;
Boise Centre East 410C 
 
10:30am - 11:15am
ID: 274 / Session 28 part 2: 1
Main Technical Program
Topics: Process Modeling
Keywords: Wet Weather Treatment, Process Evaluation

How Willow Lake WPCF Expanded Their Wet Weather Capacity For One Cent A Gallon

Alan Straub1, Stephanie Eisner2, Jue Zhao2

1Carollo Engineers, Inc; 2City of Salem; ,

The Wet Weather Optimization Project at the City of Salem Willow Lake Water Pollution Control Facility (WLWCF) increased the plant’s secondary hydraulic and capacity by over 50% without the need to invest millions of dollars to construct new basins per the original facility plan. The increased capacity is achieved by modifying the existing process control approach, implementing minor in-house infrastructure improvement and reeducating operational staff.

The South Secondary System at WLWPCF provides the highest level of liquid stream treatment at the plant. Increasing the capacity of this system, reduces the probability of violating effluent discharge permit limits during wet weather events and produces the highest quality effluent for the receiving water body.

To assess and test capacity limitations within the South Secondary System and develop improvement alternatives the optimization effort included the following: Educating staff on the Project motivation and expected results to develop inclusiveness in the solutions; evaluating the limitations on existing equipment and conveyance to identify and detail potential capital improvements enhanced data gathering to identify causes and impacts of undesirable operational scenarios; and full-scale testing and implementation of the operational system to assess the reliability and stability of operational ranges.

This effort revised RAS return rate protocols, and wasting strategy, aeration basin and influent stream management changes and most importantly secondary clarifier blanket optimization. Historically the secondary system had been managed on pounds of biosolids, however this was modified to first SRT control then MLSS control during wet weather events.

Infrastructure optimization included removal of hydraulic insertions in the secondaries increased VFD frequency to allow higher RAS flows, inlet baffle installation in mixed liquor distribution box and instrumentation upgrades.

The presentation will outline the evaluation, full scale testing and key system upgrades to achieve the treatment capacity increase.

Brief Biography and/or Qualifications
Alan Straub, PE, is a Project Manager for Carollo Engineers Inc. He has over 15 years in the planning design and start-up of wastewater treatment facilities throughout the Pacific Northwest.

Jue Zhao, PhD, PE, is the Wastewater Treatment Division manager with City of Salem. Jue received her PhD degree at University of Florida in Environmental Engineering concentrating on water/wastewater treatment. She designed over 20 wastewater treatment facilities including 5-stage modified Bardenpho, MBR, step feed, IFAS at an international engineering firm, AECOM. She also served as operation and project manager for City of Grand Island treatment plant, responsible for plant’s operation and CIP. She is currently taking full responsibility for City of Salem Wastewater Treatment Division, which provides the service to a population of 229,000 people with a hydraulic treatment capacity of 205 mgd.

11:15am - 12:00pm
ID: 151 / Session 28 part 2: 2
Main Technical Program
Topics: Process Modeling
Keywords: Ammonia Based Aeration Control, Nitrification modelling, Energy Conservation, Model based control

Modelling Ammonia Based Aeration Control in Real Time with Online Instrumentation

Dave Commons, Melody White, Bob Dabkowski, Kevin Menning, Steve Myers

Hach, United States of America;

Traditional forms of modelling and their commercially available systems have been tremendous tools for engineers and planners to plan large scale projects such as new plant designs or expansions. Extending the benefits of these models, plant staff are adopting “real time modelling” as a means to determine the potential benefits of upgrading and optimizing processes such as nitrification using online instrumentation.

A real time model for nitrification control, or ammonia based aeration control (ABAC) has become popular with water resource recovery facilities due to the potential paybacks associated with energy savings and enhanced process control. To properly model these processes in real time the following inputs must be collected in real time:

• Influent, return activated sludge (RAS), and if present internal recirculation (IRQ) flows

• Aeration influent and effluent ammonium concentrations

• Mixed liquor suspended solids (MLSS) or SRT data if available

• Temperature of the mixed liquor

• Average dissolved oxygen (DO) concentration of the aerobic volume

Once all of the data is entered into the system and the real time information is input from the field sensors, the real time modelling system is able to output the following information:

• The required DO concentration in the aerobic volume to nitrify the given load

• The actual percentage of the mixed liquor which are nitrifiers

• The estimated SRT of the aerobic system

• The ammonia load to the aerobic system

• The maximum possible nitrification rate of the aerobic system

• The suggested nitrification rate as limited by the DO concentration

The purpose of this paper is to provide a case study of the real time modelling system at the City of San Diego's North City Water Reclamation Plant (WRP). Discussed will be the design of the study, the installation and commissioning of the field sensors, the configuration of the model, and results from April 1‐15, 2016.

Brief Biography and/or Qualifications
Steve Myers. Over 15 yrs experience in wastewater design, optimization, and product development. Graduated University of Utah. Registered professional engineer. Technical specialist with Hach. Wastewater enthusiast.
 
10:30am - 12:00pmSession 29 part 2: Capital and Delivery
Session Chair: Dick Talley, Stantec;
Boise Centre West 120B 
 
10:30am - 11:15am
ID: 177 / Session 29 part 2: 1
Main Technical Program
Topics: Capital and Delivery
Keywords: business case evaluation process, capital project planning

Lessons learned from a successful Business Case Evaluation process for major capital investments

Jeff Kanyuch1, Frank Dick2

1Jacobs, United States of America; 2City of Vancouver, Washington, United States of America; ,

The existing Supervisory Control and Data Acquisition (SCADA) system for the City of Vancouver Washington’s two Wastewater Treatment Plants needed a major upgrade to accommodate asset management, facility operations, decision making, record keeping, and reporting.

The City, along with its contract operations partner Jacobs, used a Business Case Evaluation (BCE) process to develop a clear strategy for the SCADA system upgrade. The BCE method introduced a strategic approach that is transparent, defensible and supports long-range planning. The process clearly identified problems and business objectives for critical process equipment before starting on project solutions. Furthermore, BCE proved to be a robust process for strategic decision-making that can be applied throughout the organization.

The BCE process considered life cycle costs and benefits of both financial and non‐monetary factors. Financial comparison of project alternatives was based on the net present value (NPV) of capital cost, operations and maintenance costs, energy cost savings and risk projected over the life of a new SCADA system. Non‐monetary project impacts included monitoring and process control, mobility, alarm management, data management, security and operability. A value‐cost model was used to combine the non‐monetary and NPV of each alternative and provide a completely integrated comparison. The BCE process provided objective data to select the alternative that provided best value as a balance of capital cost, ongoing O&M costs, non-monetary benefits and risk management. The City’s SCADA upgrade project is currently in the design phase.

This session will outline the key components of the BCE process, and will provide lessons learned to arrive at overall best value decisions for major capital investments.

Brief Biography and/or Qualifications
Frank Dick
Frank oversees sewer and wastewater engineering functions for the City of Vancouver, Washington. He plays a key role in capital projects, wastewater system planning, coordination with Jacobs, the City’s contract operator for wastewater, and the City’s pretreatment program. In the role for 11 years now, Frank has developed energy management programs for Vancouver’s wastewater and water utilities, and has taken a lead on dealing with issues of non-dispersible materials. He is active in local and regional Northwest wastewater organizations.

Prior to his current position, Frank spent 17 years at semiconductor and electronics manufacturing facilities in consultant and staff positions for facilities engineering and environmental compliance.

Frank earned is BS in Chemical Engineering from Washington State University.


Jeff Kanyuch
With more than 27 years of experience, Jeff currently serves as a project manager for the City of Vancouver’s design-build delivery of a large control system upgrade at two wastewater treatment plants and six associated remote stations. In this role, Jeff has been responsible for control system implementations, from concept development to commissioning, including design, construction supervision, software development, field testing, and system commissioning. His background includes control system work for WWTPs, pump stations, sewer lift stations, and industrial facilities, as well as estimating costs for instrumentation and control system implementation projects.

Jeff earned his BS in Electrical Engineering from the University of Dayton and his MBA, Business Administration, at Oregon State University.

11:15am - 12:00pm
ID: 259 / Session 29 part 2: 2
Main Technical Program
Topics: Capital and Delivery
Keywords: nutrient removal, alternatives analysis, plant modeling

Expanding to the Back Forty – Upgrading the Meridian WRRF to Meet Future Permit Limits

Zach Dobroth1, Rick Kelly1, Clint Dolsby2, Adam Jennings2, Travis Kissire2

1Brown and Caldwell, Boise, Idaho; 2City of Meridian, Idaho; ,

It’s a simple equation: stringent new nutrient limits + rapidly growing service area + open space on site = let’s build! Of course, the math is never quite that simple. The City of Meridian, Idaho, dealt with such a calculation for its advanced BNR wastewater reuse and recovery facility (WRRF). The City recently received very low ammonia and phosphorus limits in its new discharge permit. Meanwhile, it continues to see a population boom that has made it Idaho’s second largest city in a flash. This growth requires a WRRF capacity expansion to 15 mgd (maximum month flow), up from 9.1 mgd (maximum month flow). With space available adjacent to its existing plant, the City set out to determine the best route for near- and long-term expansion.

A detailed alternatives analysis was developed using computer models of the plant to analyze three main process alternatives and nine “add-on” options that could shrink the footprint of the primary process. The mainstream processes examined were: 5-stage Bardenpho, simultaneous nitrification/denitrification, and 4-stage Bardenpho with discharge to groundwater infiltration ponds. A 20-year lifecycle cost analysis was performed to determine the optimal treatment process. Once selected, the design team had to consider how best to interconnect the existing and new sections of the WRRF into one functional plant. This presentation will discuss the process and cost analyses, summarize design decisions, and provide an update on the construction of the new WRRF facilities, which will be complete in mid-2019.

Brief Biography and/or Qualifications
Zach Dobroth, P.E. (Idaho), is a wastewater engineer in Brown and Caldwell’s Boise office. Zach has experience designing municipal wastewater treatment facilities and with process modeling of advanced biological nutrient removal systems.

Clint Dolsby, P.E. (Idaho), is an Assistant City Engineer for Meridian. He is the City's project manager for the liquid stream capacity expansion project at the Meridian WRRF.
 
10:30am - 12:00pmSession 30 part 2: Resource Management
Session Chair: Andrew Matsumoto, Civil West Engineering Services;
Boise Centre East 430 
 
10:30am - 11:15am
ID: 210 / Session 30 part 2: 1
Main Technical Program
Topics: Resource Management
Keywords: Nitrate, Sewer, Methemoglobinemia, SVRP Aquifer

Reviewing the Efficacy of Sewer Installation in Spokane County, Washington Following Fifty Years of Water Quality Monitoring

Ben Brattebo

Spokane County Environmental Services, United States of America;

Degradation of aquifer water quality is a fundamental concern to the health and welfare of consumers who rely on groundwater as a supply of drinking water. Nitrogen as nitrate (NO3) is one of several contaminants that permeate into aquifer groundwater from on-site wastewater disposal (such as septic systems) and other sources commonly associated with urban growth. At unnaturally high concentrations, NO3 can contribute to serious health effects including the condition methemoglobinemia. Methemoglobinemia is primarily of concern for infant growth and development, but is also associated with negative health effects in children and adults. Nitrate contamination of groundwater may also indicate other potential groundwater pollution from urban development. Spokane County, WA observed increasing concentrations of groundwater contaminants, including NO3, correlated with an increase in the number of septic systems overlaying the Spokane Valley Rathdrum Prairie Aquifer as early as 1969. In response to these findings, the County initiated a long-term water quality monitoring program and subsequently, a 30+ year program to connect homes within densely developed areas of the County to a centralized sewer collection system and associated wastewater treatment facility. Here, we reviewed the last fifty years of monitoring data to determine the efficacy of sewer installation in an area of Spokane County where aquifer sampling occurred before and after sewer installation. Results from nonparametric trend analysis demonstrate that 86 percent of aquifer monitoring wells experienced either a decrease or stabilization of NO3 concentration following sewer installation. Moreover, the remaining 14 percent of monitored wells are not statistically increasing in NO3 over time and are therefore not likely dominated by septic system influence. We conclude that the transition from septic-dominated to sewer-dominated wastewater management practices was warranted in densely developed areas of Spokane County and may be a solution for other counties that depend on a high standard of aquifer water quality for their drinking water.

Brief Biography and/or Qualifications
Ben Brattebo is a Water Reclamation Engineer for Spokane County Environmental Services. Ben has worked at Spokane County for eleven years, managing projects related to surface and groundwater quality and wastewater collection, treatment, and reclamation. Ben is a licensed Profession Engineer in Washington state. Prior to working for the County, Ben served as a US Air Force civil engineer officer.

11:15am - 12:00pm
ID: 291 / Session 30 part 2: 2
Main Technical Program
Topics: EBNR, nitrogen and phosphorus management
Keywords: Reuse, MBR, nitrogen, membrane, TMDL

Batch MBR Allows Town to Reuse Wastewater, Meet Low Nitrogen Limit, and Increase Flow

Dave Holland1, Chris Weiss2, Tim Allen3

1Aqua-Aerobic Systems, United States of America; 2H2M architects + engineers; 3Town of Riverhead, NY;

By reusing some of their wastewater, the Town of Riverhead, NY saw an opportunity to draw nearly 100 million gallons per year less from their potable-water aquifer and protect the adjacent ecological estuary. Though the Town’s 1.4 MGD Wastewater Treatment Plant was regularly meeting its total nitrogen (TN) discharge limit to the Peconic Estuary, a study done by the USEPA recommended reducing nitrogen loading to strengthen and maintain the estuary. In 2007, the New York State DEC agreed and began the process of modifying the facility’s discharge permit to a lower effluent nitrogen total mass daily loading (TMDL). In addition, part of the plant effluent could be reused for irrigation on the adjacent golf course.

The existing plant was converted to a sequencing batch reactor (SBR) system in 2009 and permitted for a nitrogen TMDL of 170 lbs, but the new NPDES permit was for 1.6 MGD and a nitrogen TMDL of only 40 lbs. In addition, loadings to the plant were much higher than the existing system was designed for. The system volume was not large enough to handle the extra flow and loading, but the plant didn’t have the space to add any basins.

The Town considered several options, and decided to convert the SBR system to a unique batch-type MBR system. The batch configuration was selected because extra partitions were not required and “short-circuiting” of influent solids or nutrients directly to the effluent wasn’t possible.

The upgrade to the SBR system, which began in late 2015, was done in two phases so that the plant could continue treating its 1.1 MGD average flow. The system is now reducing the TN from an average of 455 lbs/day to only 32.7 lbs/day. In addition, system operation is very stable, with trans-membrane pressures (TMPs) of only 0.4 - 0.8 psid.

Brief Biography and/or Qualifications
Dave has 38 years of experience designing, piloting, commissioning, and troubleshooting water and wastewater treatment systems, currently focusing on biological processes and membrane systems. He performs technical presentations for engineering firms, conferences and Aqua-Aerobic seminars. He holds an A.A.S. degree in Technical Writing from Rock Valley College in Rockford, IL
 
10:30am - 12:00pmSession 31 part 2: Data Collection and Use
Session Chair: Mia Sabanovic, City of Portland/Bureau of Environmental Services;
Boise Centre West 120A 
 
10:30am - 11:15am
ID: 147 / Session 31 part 2: 1
Main Technical Program
Topics: Facility Operations and Maintenance
Keywords: Online Analyzers, BNR, Water and wastewater treatment, Chloramination

Online Analyzers for Process Monitoring and Control

David Roskowic

ASA Analytics, Inc, United States of America;

Online Analyzers provide an analytical tool for operation's professionals providing data for specific nutrients used to optimize process performance, energy and chemical usage.

Information will be presented for Ortho-Phosphate and other BNR nutrient treatment as well as water Analytes, i.e. Chloramination, Fe, Mn and NO3.

Brief Biography and/or Qualifications
Chemical Engineer in water and wastewater. Broad process operation in wastewater BNR and water treatment.

11:15am - 12:00pm
ID: 306 / Session 31 part 2: 2
Main Technical Program
Topics: Collections Systems and Conveyance
Keywords: Pilot Testing, Odor Control, Wastewater Treatment Plant

Pilot Testing Odor Control Chemicals - Dosages, H2S, and WWTP Impacts

Jordan Fahmie

AECOM, United States of America;

This presentation will summarize the findings of a full scale pilot test of odor control chemical injection in the collection system of the Honouliuli Wastewater Basin. Ferric Chloride was fed to the Waipahu Force Main, and Calcium Nitrate was fed to the Ewa Beach Force Main. Various dosages of the chemicals were added, while hydrogen sulfide (H2S) concentrations were monitored downstream. H2S was also monitored at the Honouliuli Wastewater Treatment Plant (WWTP), located approximately 3 miles from each of the force main discharges.

A Preliminary Engineering Report suggested that pilot testing would be useful to verify chemical dosage requirements and could be used to establish design criteria for further evaluating permanent chemical storage and feed systems at selected wastewater pump stations (WWPSs). While chemical addition is widely used for odor control, effective dosages vary based on unique wastewater composition and environmental conditions, which warrants the need for pilot testing prior to full-scale implementation.

The presentation will include specific testing data, conclusions, and photographs taken during the pilot testing effort, as well as lessons learned.

Brief Biography and/or Qualifications
Jordan Fahmie is a professional engineer with 8 years of experience on water and wastewater projects in Hawaii. His work with AECOM has been focused on wastewater treatment, sludge management, and odor control in the planning, design, and construction phase. Jordan graduated from the University of Hawaii with a Bachelor’s in Civil Engineering.
 
12:30pm - 2:00pmConference Committee Debrief
Boise Centre East 420A 

 
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