Tri-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…

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Juniper Ridge Hydroelectric Project

The Juniper Ridge Hydroelectric project is a $22 MM EPC (Engineer, Procure, Construct) project. The engineering and construction team includes Slayden, Sunrise Engineering, and Burke Electric. The project consists of 2.5 miles of 108″ steel penstock pipe placed within and beneath the existing irrigation canal system. The penstock entrance consists of a rock excavated forebay,…

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Gold Ray Dam Removal

The Gold Ray Dam Removal and River Restoration is a design-build project that included the removal of two dams, a powerhouse, and associated fish ladders. Removal of the Gold Ray Dams represents one of the largest dam removals ever undertaken in the United States. The concrete dam is 38 feet tall by 360 feet long…

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Willow 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…

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Scott Water Treatment Plant Expansion

Slayden was selected, through the RFP process, as the CM/GC on this $27 MM water treatment plant upgrade and expansion for McMinnville Water & Light.  This fast track CM/GC project involved pre-construction services beginning at 80% design.  Slayden provided constructability reviews and value engineering estimates to help bring the project within the budget set by…

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John Day Fish Ladder & Flow Deflector Projects

The work on this project consisted of the fabrication-installation of a bulkhead/stoplogs system, dewatering of the spill bay, concrete demolition, concrete anchor installation, placement of new 35 foot tall spillway flow deflector with high velocity concrete finish (2,400 CY), heavy hoisting and a diving operation to facilitate increased fish passage through the existing hydroelectric facilities.…

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Mt. Tabor / Washington Park Interim Security and Deferred Maintenance Project

This CM/GC project for the City of Portland enhanced security and implemented water delivery improvements on the turn-of-the-century historical reservoirs. Work included extensive attention to environmental surroundings, preservation of historically designated work components, 2000+ feet of new sewer mains that included diversion of flow with new manholes and inlet installation, 5000+ feet of 24”-54” steel…

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OR 38: Elk Creek to Hardscrabble Creek

This $47 MM design build multi-discipline highway project consisted of the design and replacement of five bridges over environmentally sensitive waterways in multiple work zones along OR 38. The project also included upgrades to the OR 38/OR 138 intersection. The project stretched over a 14-mile section of OR 38 between the cities of Drain and…

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US 101: Spencer Creek Bridge

This contract was for the replacement of the Spencer Creek Bridge located near Newport, Oregon, for Oregon Department of Transportation. The project was adjacent to Beverly Beach State Park and is part of a National Scenic Byway. Beverly Beach State Park is one of the most popular state parks in Oregon with more than 250,000…

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Truckee Agriculture Inspection Station Relocation

At an elevation of 5,000 ft. above sea level in the Sierras, this $18 million heavy civil project for Caltrans/DGS consisted of constructing eight lanes of concrete paving on mainline, a new car inspection station, as well as, a new truck inspection station on I-80 near the environmentally sensitive Truckee River.  Crews worked through the…

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