This work is for improvements to the entrance (downstream end) of the north shore fish ladder. The improvements are to address existing fish passage delays. Work elements include water management, dive work, partial demolition and rebuilding of the fish ladder entrance for a variable width weir, and new stoplogs and stoplog guide slots, steel fabrication,…

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This project consisted of a 5-phase expansion of an occupied minimum and medium-security Oregon State prison.  We were required to work without interrupting the daily inmate routines or the facility staff.  All workers were required to pass a background check and check in and out of the project through gates that are manned by a…

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This 84,000 SF facility will provide the OSU Athletic Department with an indoor practice field for football, soccer and baseball during inclement weather, and it will house pre-game functions accommodating gatherings of 3,500  to 5,000 people.  The 50 x 100 yd field consists of state-of-the art field turf on a natural earth sub grade with…

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Slayden was selected for this $9 MM plant expansion project 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…

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This small slow sand filter plant was built to provide finished potable water for the City of Falls City.  Construction of the plant included clearing and grubbing a two acre site, installation of RW and FW piping to and from the plant, three new filters, media and pipe distribution, a covered chlorine contact basin and…

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The Outfall 27/Sellwood CSO project consists of the construction of a Combined Sewer Overflow (CSO) Control Facility, the main components included deep excavations and shoring for a new wet well and diversion structure, two 250 HP submersible pumps, a new CMU control building with a green roof that housed electrical equipment and controls, odor treatment…

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This project consisted of construction of a new 15 MGD wastewater influent headworks, aeration basin, two secondary clarifiers, hypochlorite disinfection, septage receiving, emergency power generator, sludge tank, solids building containing a sludge pump station, centrifuge sludge dewatering, and biosolids lime pasteurization system, operation building, and maintenance building to provide 30/30 effluent at maximum month average…

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This dam removal project on the Rogue River near Gold Hill, Oregon, utilized large five cy bulk bags that were designed by Slayden to facilitate utilizing native river alluvium materials as a cofferdam. Silt curtains were used on the downstream side of the existing dam to facilitate containment of turbidity and to serve as an…

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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…

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The original Fall Creek Hatchery was to be turned into a fish research facility. The new construction began with a raw water intake structure and a fish ladder as well as a 200 ft. simulated stream. The project included construction of a 3000 sf research center with a full laboratory, interpretive center, and living space…

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