Wastewater
Spokane River Side Park Water Reclamation Facility
Slayden and MWH Constructors worked with the City of Spokane to achieve major upgrades to their Riverside Park Water Reclamation Facility. The upgrade included a Next Level of Treatment (NLT) – a new membrane filtration system that significantly improved the quality of effluent released into the Spokane River. The primary reason for the NLT was…
Read MoreWashougal Wastewater Treatment Plant
The City of Washougal in southwest WA chose Slayden to double the treatment capacity of its existing WWTP from 2.24 MGD to 4.48 MGD. The expansion included a second influent pump station, a second oxidation ditch, a flow distribution structure, a second ultraviolet disinfection system and a new structure to house the expanded ultraviolet system,…
Read MoreHermiston Recycled Water Plant Improvements
The City of Hermiston prioritized this $18M DBB project that removed a persistent pollutant in its effluent and improved the water quality for residents. It integrated a new 6 MGD membrane filtration system into an existing 2 MGD. It also included upgrades to the existing headworks structure including new screens and a new fine screen…
Read MoreMedford RWRF Cogen
The Regional Water Reclamation Facility was originally constructed in 1969 and provides sewage treatment for Medford, Central Point, Phoenix, Talent, Jacksonville, Eagle Point, and White City. The RWRF was phased construction of improvements to expand the RWRF to comply with discharge standards and provide increased capacity for regional growth. Current capacity is 20 MGD dry…
Read MoreMedford RAS System Improvements
This project served the City of Medford by more than doubling their capacity to handle the secondary waste water process. The job consisted of demolition and re-installation of mechanisms on (5) 90’ clarifiers, installation of (5) new Vertical Turbine Pumps including excavation and installation of 30’ pump cans to house the Vertical Turbine Pumps. Slayden…
Read MoreStayton Wastewater Treatment Plant
This project was an expansion to the Treatment Plant for the City of Stayton. The project included construction of a new selector cell, filter structure, sludge drying and storage building, sludge storage tank, UV building over existing open channels and a shop. Specific new equipment included a sludge dryer, three-belt belt filter press, odor control…
Read MoreTri-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…
Read MoreWillow Lake WPCP Headworks and Primary Treatment Improvements
Slayden was selected as the CM/GC on this $92 MM Headworks and Pumping Plant Project for the City of Salem. This fast track project included construction of new headworks, influent and primary pump station, bar screen facility, two electrical buildings, two new primary clarifiers, effluent analyzer building, and an effluent diversion structure. Specific work components…
Read MoreTahoe Truckee Water Reclamation Plant
Due to the population growth, large tourist industry, and ongoing environmental concerns, the City of Truckee required a major $53 million upgrade to their existing wastewater treatment plant. This project included excavation of 75,000 CY for multiple structures in a tight existing plant, excavation of over 45,000 CY for more than four miles of pipelines…
Read MoreBend Water Reclamation Facility Headworks Replacement Project
This project included construction of a new two story precast panel building, the housing of three influent trains, and is set up for one more train to meet upcoming future demand. Each train consists of a band screen placed in a specialty fabricated stainless steel tank handling all the primary influent via large modulating pinch…
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