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).

 
Session Overview
Session
Session 08A: Stormwater: Planning
Time:
Monday, 09/Sep/2019:
9:45am - 12:00pm

Session Chair: Leila Barker, Clean Water Services;
Location: E147-148

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Presentations
9:45am - 10:30am

One Water: A Bridge Between Water Supply Sources

Sachi Itagaki, Rachel Morgan

Kennedy Jenks, United States of America;

Recently, California has been focused on building bridges between water supply and non-traditional sources to create One Water supply portfolios. Stormwater is a new water resource for many water agencies that requires building bridges with local agencies. This presentation will highlight two examples in California with different approaches to capturing stormwater within an urban landscape to supplement recycled water and build a more reliable water portfolio.

The Scotts Valley Water District in Scotts Valley, Santa Cruz County is an agency reliant solely on groundwater for potable water supply. With increased urbanization in the 1990’s, the Santa Margarita groundwater basin became overdrafted. Kennedy Jenks prepared a potable reuse study for groundwater recharge to evaluate water supply and environmental benefits, then designed a parking lot retrofit to facilitate capture, treatment, and recharge of stormwater using biofiltration cells integrated into the landscape, pervious concrete pavement, and a detention/infiltration tank with a water level sensor.

The Las Virgenes Municipal Water District in Calabasas, Los Angeles County relies on imported surface water for potable water and treats and delivers recycled water for irrigation. Kennedy Jenks evaluated stormwater as a source to supplement available wastewater for a proposed advanced water purification facility (AWPF) to augment potable drinking water supply. A range of stormwater projects were screened to identify opportunities for stormwater capture and conveyance by the existing sewer system to the AWPF. Local projects proposed by other agencies to comply with total maximum daily loads (TMDLs) appear to be promising. If enlarged to maximize capture for reuse, these projects would serve multiple benefits by offsetting imported water, improving water quality, and contributing to TMDL goals.

In both projects, bridges had to be built between multiple local agencies and multiple water sources to contribute to achieving the goal of resilient One Water portfolios.



10:30am - 11:15am

Can District-Scale Green Infrastructure In Detroit, Michigan Improve Community Livability And Catalyze Redevelopment?

Dave Elkin1, Valerie Strassberg2

1Juncus Studio, Portland Oregon; 2The Nature Conservancy, Michigan Chapter, Detroit MI; ,

The Nature Conservancy, along with the City of Detroit and Eastern Market Corporation, led the Eastern Market Framework Plan project which established a vision to take the individual, disperse stormwater facilities typically required throughout a new 250-acre industrial development and aggregate them to create a working landscape that is greater than the sum of its parts.

The recently completed Eastern Market Framework Plan establishes a vision for the future development of a 250-acre site adjacent to the historic Eastern Market. This future “Food Innovation Zone” will be a high-tech center of food production, processing, and distribution and will integrate light industrial buildings within the fabric of an existing neighborhood.

At the heart of the Framework Plan is the vision of a network of centralized, hydraulically connected, neighborhood- scale, green stormwater facilities and greenways, which will convey and manage runoff from a significant portion of the new industrial development and surrounding neighborhood. The concept of a centralized management system is fundamentally to sustainably manage stormwater through green infrastructure solutions, but also to explore three key objectives:

  1. Reduce a common development barrier (stormwater management) to potentially catalyze future development
  2. Improve neighborhood connectivity throughout the district by aggregating green infrastructure facilities which may also be an economic catalyst for surrounding properties
  3. Provide opportunity for unique ownership, implementation and maintenance strategies to reduce overall costs

The Framework Plan has expertly woven the green infrastructure facilities into the existing fabric of the neighborhood and provide connectivity throughout the district by creating an innovative and inspired sense of place that will be an economic catalyst for surrounding properties.

This presentation will discuss the variety of possible implementation, ownership, and maintenance strategies for the innovative green infrastructure network established by The Nature Conservancy, assisted by Juncus Studio, within the Eastern Market Framework Plan.



11:15am - 12:00pm

Bridging the Gap Between Planning and Performance: Stormwater Management

Nicholas McMurtrey1, Sarah Ferguson1, Ryan Ward2

1Murraysmith, United States of America; 2Emery & Sons Construction Group; , ,

The environmentally conscious phenomenon, green streets, can challenge many tried-and-true design and construction methods – especially when a formal communication process typical of design-bid-build contracts become tested during construction. Many utilities are implementing green streets into their stormwater management requirements, compelled by National Environmental Policy changes.

Attend this presentation to learn how the City of Lake Oswego, the design team, and the contractor employed an “all hands on deck” approach to apply a new Stormwater Management Manual for the first time. The D Avenue Improvement project is a landmark venture for the City, and involves a residential street plagued with abnormally high volume and high-speed traffic, dilapidated pavement, and localized flooding – not to mention adjacent stormwater systems failing to compensate for D Avenue’s lack of a continuous conveyance systems. The design team was further challenged with the neighborhood’s unique character, forcing a delicate balance between stormwater, pedestrian, and pavement objectives using a curbless design. The solution: traffic calming through extensive landscaping, over 40 Low Impact Development stormwater management facilities, and a meandering alignment over 10 blocks.

Learn how this three-pronged team of owner, designer, and contractor were able to minimize schedule delays and rework. Unforeseen utility conflicts were resolved in a timely manner and with ease due to the dynamic duo of a flexible contractor and a responsive design team. Streamlined communication methods were essential to understand disciplinary goals relative to the more complex stormwater system.



 
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