Tri-City Water Pollution Control Plant Phase 1

The Tri-City Phase 1 Expansion includes, but is not limited to, an intermediate pumping station, fine screening, aeration basin, blower building, membrane building, ultraviolet (UV) disinfection system, chemical system, galleries, and ancillary systems to expand the designated activated sludge treatment plant by 4.0 million gallons per day (MGD) average day flow/10.0 MGD peak hour flow with a MBR treatment system. This $80 Million CM/GC alternative delivery project includes approximately 16,000 CY of structural concrete, 95,000 CY of excavation for structures, and 40,000 CY of backfill. The mechanical package includes over 35 pumps ranging in size from 4” to 30,” over a mile of 4” and larger exposed process piping routed through galleries, over 200 valves ranging in size from 4” through 30,” and installation of a new submerged membrane system. This “green” project includes green roofs, permeable pavement, an underground storage system, and heat recovery systems.

Total Project Value: $79.8 million

Slayden Construction Role: Construction Manager/General Contractor

Owner: Water Environmental Services

Serious About Safety

For over 30 years, we’ve dedicated ourselves to job site safety, and our track record of success speaks for itself.

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Select Slayden Projects

Slayden is keeping busy! Check out our projects throughout the last 33 years.

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