Willow Lake Process Support Facility

This project included a 28,000 sf office and laboratory building and a 17,000 sf maintenance building. The office and laboratory houses the facility staff as well as provides a state-of-the-art on-site testing facility for the plant to utilize in monitoring the plants outflow. The maintenance building allows the facility to store and maintain all equipment…

Read More

Bend 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…

Read More

Tri-City Wastewater Treatment Plant Improvement Project

Upgrades to Tri-City wastewater plant involved major changes to the solids handling process. The initial phase of construction involved the removal from service of a DAFT tank and in its place installing two Andritz 2.0 meter Gravity Belt Thickeners for solids thickening and an Andritz D7LL Centrifuge and associated conveyors for solids dewatering and load…

Read More

Coldwater Ridge Visitor’s Service Center

Construction began on the 26,800 square foot Visitor’s Service Center in the summer of 1992, high above Coldwater Lake at the base of Mt. St. Helens. The remote location, coupled with adverse weather conditions, made construction of the concrete and steel building an enormous undertaking. Slayden Construction mobilized and operated our own concrete batch plant,…

Read More

Willow Lake Perimeter Utility Corridor

This $9.4 million CM/GC project included the construction of a mile of perimeter duct bank and piping corridor. This project also involved many aspects of coordination; plant power was transferred to new plant switchgear and interior plant transformers with no interruption to plant functions, power was required to be provided to a new administration building…

Read More

Rock Creek Facility Expansion and Upgrades

This project involves the construction of four new filters, additional channels, gallery, modifications at the existing east tertiary facility, new direct filtration channel, modifications to digester 1, existing west backwash surge basins, and the existing west tertiary system. Project includes expansion and upgrades to plant electrical and instrumentation and controls, 23,000 CY of excavation, more…

Read More

City of Portland Ground Water Treatment Improvement Project

This $4.3 million project for the City of Portland, is located at the existing Portland groundwater pump station facility. The scope of work consists of site grading, ground improvements through the use of stone columns, construction of a new chemical building, remodeling the existing control building, yard piping, site work, fencing, electrical work, instrumentation, painting,…

Read More

Oregon State University Dixon Recreation Center

The expansion project added about 60,000 square feet of new space to the recreation center, including a three-court basketball gym, a three-lane indoor jogging track, an outdoor recreation center, an indoor climbing facility, weight lifting and cardiovascular workout rooms, and multi-purpose rooms and street-level ADA accessible lobby and entry. The expansion included renovation of about…

Read More

Seaside UV Disinfection

This design build project involved the installation of an owner provided Trojan 3000 UV system to bring the City into compliance with their discharge permit.  Construction included a new concrete channel and 30” process piping, upgrade from chlorine gas to sodium hypochlorite, electrical improvements and generator installation for backup power.  All work was completed without…

Read More

Wilsonville High School Expansion

The project included a two-story library/media center addition, a cafeteria addition, and a gymnasium addition with underground locker room and team facility.  The existing school was entirely remodeled while school was in session.  A new data infrastructure system was installed.  Associated civil site improvements included additional parking, and extending the east ball field areas to…

Read More