The City of Hermiston advanced a critical $18 million plant improvement project to remove a persistent pollutant from its effluent and enhance overall water quality for the community. Slayden Constructors integrated a new 6 MGD membrane filtration system into the existing 2 MGD facility, significantly expanding treatment capacity and performance. Work included major upgrades to the headworks structure, featuring new screening equipment and a fine screen facility with two rotary drum screens.
Slayden also constructed new slide gates, MBR and aeration basins, a new pump station, and an auxiliary support building housing pumps, dichlorination blowers, chemical rooms, offices, and additional infrastructure. Comprehensive site work and staging rounded out the improvements, delivering a modern, reliable treatment system that supports the City’s long term environmental and community goals.
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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