Session 01C: Alternate Delivery/Leadership/Wastewater - Livestream
3:00pm - 3:45pm
Transforming Design-Bid-Build to Improve Collaboration and Teamwork
Keller Associates, Inc., United States of America; ,
The design-bid-build procurement process can limit the chance for collaboration between the owner, engineer, and contractor. This drawback has been a driving force toward non-traditional delivery methods such as design-build, construction manager-at-risk, and progressive design-build. However, there are tools to improve collaboration, which can make the design-bid-build process remain the best option. Some of these tools include prequalifying contractors and providing a detailed construction constraint specification. The construction constraints section of bidding documents offers engineers a unique way to communicate challenging project aspects to contractors. When well thought out and detailed, construction constraints can help contractors understand anticipated shutdowns, required bypass pumping provisions, and limitations in the existing equipment’s operational capabilities.
Utilizing these and other tools to improve collaboration can also lead to an aggressive competitive bidding process. Recently, the City of Lewiston awarded a contract for the construction of wastewater treatment plant upgrades. The majority of their existing processes were being upgraded and expanded, which created an immensely complex project. Using collaborative tools, the contractors understood the project and had greater confidence in their costs, such that all bids were within ~5% on this $34M project. This presentation will introduce and discuss collaborative methods for improving the design-bid-build procurement process.
3:45pm - 4:30pm
Panel Discussion: Leadership Perspectives from the Future Workforce
1HDR, United States of America; 2Carollo; 3City of Meridian, Idaho; 4Jacobs Engineering Group; 5CivilWest Engineering Group; 6HDR; 7University of Idaho; , , , , , ,
A diverse panel of active, local leaders with vast combined experience in water issues will share insight and their vision of the future workforce. In 2019, the Diversity and Leadership Track focused on leadership success and challenges associated with a diverse workforce from the point of view of those in the later stage of their career. In 2021, we will pose similar questions to a panel who are in the first half of their career looking forward. The panel will answer questions on their vision for future leadership based on tomorrow’s workforce, diversity and technology.
A panel of 5 will be developed with Conference Committee and Leadership Committee. Anticipate it will include diverse gender and age leaders at both private and public agencies from Washington, Oregon and Idaho.
4:30pm - 5:15pm
Screen Capture Efficiency Sampling & Testing Protocol for Waste Water Treatment Plant Screens at Start-up
Ovivo USA, LLC, United States of America;
For approximately two decades, consulting engineers have asked screen manufacturers to provide third party, independent test results documenting the capture ratios of their screen’s debris removal efficiency. Have these results truly been reproducible at your wastewater plant?
Decades of third-party capture testing of screens in the UK have been a good thing. However, the screenings capture data proved only the “Capability” of that particular screen tested and under those specific UK flow conditions. Expecting identical capture results from the same manufacture’s screen at wastewater facilities with differing hydraulics, variable wastewater velocities, TSS & FOG loading characteristics, let alone up-front grinders is neither practical thinking or proven in the field to be true for 40%-45% of the current installation history in the US. Why? It is the very subject of this paper & conference presentation. There are definite wastewater similarities from site to site; however, there are also many dissimilarities that require screening equipment modifications to achieve the true screenings capture capability of any manufacturer’s screen. This presentation will discuss an inexpensive upstream and downstream on-site sampling method & procedure, as well as a protocol and accepted test methodology that can be performed at any municipal wastewater treatment facility or local third party laboratory to measure solids capture efficiency of any newly installed screen(s) at startup, including older screen installations that have fallen short of owner expectations.
This presentation will reveal standardized sampling hardware, process & procedure, as well as simple bench-top test method for determining the screenings capture of any headworks or membrane protection screen. A single day sampling method & protocol will be described in detail that will provide a screen’s site-specific debris capture efficiency. This standardized sampling and testing protocol can be performed by screen manufacturers, plant operators, and/or third party laboratory technicians.When incorporated into a consulting engineer’s screen specifications it will require all bidding manufacturers to meet a desired screen capture efficiency (±X%) in the bid spec. The awarded manufacturer will be responsible for meeting the specified screenings capture.