Willow Lake WPCP Headworks and Primary Treatment Improvements

Slayden was selected as the CM/GC on this $92 MM Headworks and Pumping Plant Project for the City of Salem. This fast track project included construction of new headworks, influent and primary pump station, bar screen facility, two electrical buildings, two new primary clarifiers, effluent analyzer building, and an effluent diversion structure. Specific work components included installation of a 120’ x 220’, 50’ deep excavation, Z sheet shoring system with a double row of tie backs. Also included were ten dewateringwell points with rates in excess of ten to fifteen million gallons per day (mgd). This water was pumped to a large settling basin before being discharged to the Willamette River.

Other work components included excavation of over 100,000 cy of soils and placement of over 20,700 cy of complex concrete at numerous structures, and the supply and install of a $13 MM mechanical piping and equipment package that included thirteen flygt submersible pumps (seven of these pumps were 20” discharge with 133 HP motors). This project also included three 65’ tall barscreens, two conveyors, two washer compactors, two primary clarifiers, 35 slide gates, 30 total pumps ranging in size from 2” to 20”, approximately 40 dezuric valves many of which were electrically actuated, and mechanical piping ranging from 4” through 12”. Also, 300’ of new large diameter (96”) influent piping 30’ below grade and over a mile and a half of numerous other inner connecting plant piping runs (4” up through 60”). Slayden also managed the complex electrical, instrument, and control packages along with the startup of the facilities. Close coordination with the existing plant operation made this a successful project that was completed on time and with no interruptions to service.

Total Project Value: $92.3 million

Slayden Construction Role: CM/GC

Owner: City of Salem

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Select Slayden Projects

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Management Skills that Help Reduce Costs

"We have been impressed with their management skills, starting with preconstruction where they performed value engineering that reduced costs, lead procurement with detailed bid packages that brought our project qualified subcontractors and manufacturers and produced a schedule that would get our project completed on time. Slayden has continued this into the construction phase by managing the work to stay on schedule."

Randy Rosane, P.E., Project Manager with Water Environmental Services

Positive and Goal-Driven

"Slayden’s positive approach and eagerness to achieve the project goals was a tremendous benefit and a driving force to the project and its success. Slayden achieved all minority, woman, and emerging small business subcontracting goals and also met the 20% Workforce Training and Hiring Program’s apprenticeship requirements. They also held their subcontractors to these same goals and requirements."

Michelle Lostra, P.E., City of Portland, Water Bureau

Strong Communication and Community Outreach

"I feel confident in recommending Slayden for their approach to neighborhood outreach and desire to work with our community outreach and communications team to help keep neighbors informed, resolve issues and mitigate issues."

Katy Fulton, Lake Oswego – Tigard Water Partnership

Efficient and Safe

"I enjoyed their management style, which was efficient while paying attention to cost. This was done without sacrificing safety. I would welcome the chance to work with them in the future."

Daniel G Shepard, Manager, Grants Pass Irrigation District

Positive Relationship Builders

"Slayden has met all conditions of approval and does a great job of keeping the neighborhood informed. Slayden works diligently to accommodate the neighboring citizens. In several cases, Slayden has gone above and beyond the conditions of approval in an effort to solve citizen’s issues. This has led to the development of relationships between the project team and the neighborhood, which have contributed to the project in a positive manner."

Thomas Lebo, Construction Manager, Brown and Caldwell

Respectful, Courteous, and Safe

"Slayden Construction is true to their word, without a doubt I would hire them for future projects. All of the employees that worked at the plant were respectful, courteous, and preformed the duties at hand in a safe manner. I can’t say enough good things about Slayden, as you can see in this evaluation. Surround yourself with good people and it makes you look good. And it doesn’t get any better than Slayden Construction."

William Schmittle, City of Hermiston

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