Slayden served as the general contractor for the Salmon Creek Treatment Plant Secondary Treatment Process Improvements, Phase 5BPackage 2. The project was part of the broader Phase 5 Expansion program to increase biological treatment capacity from approximately 15 MGD to 17.5 MGD within the existing facility footprint and support long-term wastewater service needs for Clark County communities.
Construction included a new secondary clarifier, new aeration basin, RAS pump improvements, blower and air compressor upgrades, significant yard piping, electrical improvements, and demolition of the existing secondary clarifier after the new clarifier was complete and placed in service. The work was completed within an active treatment facility and included tight pipe gallery work, equipment setting, new pipe supports, and detailed shutdown and bypass planning.
Slayden earned First Place in the 2025 AGC Construction Safety Excellence Awards (CSEA) in the Utility Infrastructure Category — Under 500,000 Work Hours.
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Slayden Constructors and Jacobs Engineering recently completed a $78 million expansion of the Robert A. Duff Water Treatment Plant for the Medford Water Commission. The project boosts capacity from 45 to 65 million gallons per day and adds advanced filtration, a new reservoir, a modern pump station, and seismic‑resilient redundancies. This upgrade strengthens long‑term water reliability for Medford and the greater Rogue Valley, supporting regional growth and public health.
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Slayden’s Jeff Wall recently achieved a unique milestone. At the Pacific Northwest Clean Water Association (PNCWA) conference in Spokane, Washington, Jeff became the first contractor to be chosen under the PNCWA to join the Select Society of Sanitary Sludge Shovelers, also known as the 5S society. Members are selected based on “outstanding, meritorious service above and beyond the call of duty.” As recognition for this achievement, Jeff received a one-of-a-kind -5S gold shovel award.
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