he City of Lake Oswego required upgrades to its existing WTP to increase capacity from 16 MGD to 38 MGD. The Slayden team constructed the upgrades in three phases, demolishing existing structures after construction. There were zero unplanned shutdowns over the course of the construction.
This work included a 54-inch influent pipeline, raw water metering, chemical injection/rapid mixing facilities, ballasted flocculation (replacing existing sedimentation basins), intermediate ozone contact basin and ozone generation facilities, deep-bed granular activated carbon filtration facilities (replacing existing filters), 2.0 MG chlorine contact basin, and completed water storage clear well. Also included in the scope was a 48-inch finished water pipeline (replacing the existing clear well and finished water pump station pipeline), new residuals handling facilities, including wash water equalization basin and recycle pump station, solids thickening and mechanical dewatering facilities (replacing two of four existing solids lagoons), new chemical storage and feed facilities (replacing the existing chemical storage and feed facilities), new electrical building, and new administration building.
The project also included extensive site work including yard piping, new roadways, parking lots, stormwater detention and treatment facilities, primary and secondary electrical service, site lighting, fencing, and landscape features.
- Total Project Value: $67 million
- Delivery Methods: Design Bid Build
- Owner: City of Lake Oswego
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."