Slayden is delivering critical improvements to the Spring Street Sewage Treatment Plant in Klamath Falls, Oregon, to enhance treatment capacity, operational reliability, and long-term facility performance. The project includes construction of a new aeration basin and modifications to existing wastewater treatment infrastructure, including upgrades to an existing aeration basin and installation of new aeration blowers within the existing blower building.
Additional work includes converting two existing anaerobic digesters into sludge storage tanks, installing new dewatering feed pumps, and implementing hydraulic improvements throughout the facility to optimize system performance. As part of the modernization effort, aging infrastructure, including existing primary clarifiers, the influent pump station, and headworks facilities, will be demolished and replaced or reconfigured to support current treatment objectives.
Because the treatment plant will remain operational throughout construction, Slayden is coordinating closely with plant staff to maintain continuous wastewater treatment operations, ensure safe access for personnel, and minimize disruptions to critical facility functions. The project will provide modernized treatment processes and infrastructure that support reliable service for the Klamath Falls community well into the future.
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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