The new headworks facility enhances the existing treatment processes and the capacity of the City of Washougal Wastewater Treatment Plant. The new headworks facility was constructed on 12,000 CY of fill within the existing surge lagoon and includes a dual channel headworks screening and grit facility featuring a new 6.5 MGD mechanical screen and 12.0 MGD spiral grit chamber. The bypass channel was designed to accommodate a future parallel mechanical screen for a total capacity of 12.0 MGD. Site improvements included associated piping, 500 feet of new water main and a building enclosure for the new facility.
Washougal Headworks Facility
Washougal Wastewater Treatment Plant Storage Building
New CMU block building at the City’s Wastewater Treatment Plant.
Oregon City Main Street
Conversion back into a two-way Main Street.
Washougal ‘W’ Street Water Main
A creek crossing through an environmentally sensitive area completed the Washougal ‘W’ St Water Line.
Beaverton South Central ‘C’ Utility Improvements
Improvements to the aging utilities in this residential neighborhood focused on sewer rehabilitation and rerouting.
4th & Highland Intersection Improvements
Improvements to this La Center intersection addressed safety and stormwater needs.
Oregon City Intersection Improvements
Improvements to two Oregon City intersections along Molalla Avenue.
Oregon City McLoughlin Promenade
Restoration work along the 0.4 mile-long McLoughlin Promenade addressed needed repairs to the historic concrete and stone work.
Washougal Headworks Facility
The new headworks facility increases performance of the City of Washougal Wastewater Treatment Plant.
Stevenson Rock Creek Flood Control
Our work assessed the vulnerability of the City’s wastewater treatment plant with regard to increasing floods from Rock Creek.
Reynolds Pump Station Effluent Pipe Upgrade
We worked with the Consolidated Diking Improvement District No. 1 to perform emergency repairs on a large concrete discharge pipe.
Kalama First Street Improvements
Pedestrian improvements to downtown Kalama improved the district’s appeal and livability.
Washougal SR 14 Pedestrian Tunnel
The Pedestrian Tunnel under SR 14 links the City of Washougal’s newly reconstructed downtown with the historic Columbia River waterfront.
Cook Street Pump Station
The Cook Street project included the design and construction of a new pump station, building, and site and landscaping improvements.