Sterling Street and Township Sanitary Sewer Improvements City of Sedro-Woolley, WA

Sanitary Sewer Design and Construction

Status:  Completed 2008

Cost:  $3.8 Million (PWTF and local funding)

Description:  Work performed by R&E on this project included initial conveyance analysis, preliminary plans, budget analysis, construction plans and specifications, project inspection, and contract administration.  This project included installation of 7,300 lineal feet of 30-inch and 36-inch sanitary sewer, 7,300 lineal feet of 6-inch re-use water line, road reconstruction, curbs, gutters, sidewalks and ADA pedestrian facilities.

Sanitary Sewer Pump Station No. 2, City of Lynden, WA

Sanitary Sewer Design and Construction

Status: Completed 2012

Construction Cost: $300,000 (estimate)

Team members involved: R&E, W&A

Description: This project involved the preliminary design for the replacement of Sanitary Sewer Pump Station No. 2.  Project elements included basin analysis, flow calculations, wet well and pump sizing, siting analysis and preliminary plan preparation.  Major elements of this design are now being incorporated into the City’s Kok Road Reconstruction, currently under design by R&E.

East Lynden Sewer Phase II, City of Lynden, WA

Sanitary Sewer Construction

Status: Completed 2006

Project Cost:  $1.7 Million

Description:  This $1.7 million project included installation gravity sewer from the waste water treatment plant headworks building towards Hannegan Road, as well as water sewer and roadway reconstruction of Front Street.  Key project features included peat soils removal and structural fill within the gravity sewer corridor.

Tromp Road Utilities Improvement Project City of Lynden, WA

Utility Construction

Status: Completed January 2008

Project Cost: $1.6 Million, Public Works Trust Funds Loan and local funds

Description: Development of PS&E and construction management for installation of approximately 4,500 LF of 30” to 48” storm drain line, 4,000 LF of 12” water main, and 1,400 LF of 8” sanitary sewer line, in Lynden, Washington.  The sanitary sewer mains presented challenging construction conditions as sections of this line were up to 20’ deep in areas with a high groundwater table.  Installation of the sanitary sewer mains required dewatering using well points. Other responsibilities included permitting and coordination with other utilities and City staff.

Southwest Sewer Interceptor Project, City of Ferndale, WA

Sanitary Sewer Design and Construction

Status: Completed February 2006

Construction Cost: This $1.6 million project was funded with City funds.

Description:  Development of PS&E and construction management for installation of approximately 7,000 linear feet of 27” and 18” sanitary sewer line, 24” storm drain line, and reconstruction of 3,000 linear feet of Imhoff Road.  The sanitary sewer mains presented challenging construction conditions as sections of these lines were up to 20’ deep in areas with a high groundwater table, water sensitive soils, and was constructed during the winter.  R&E provided specific groundwater hydraulics information (pump rates, groundwater table recovery calculations), dewatering specifications, and a groundwater dewatering pay item.  This eliminated potential claims by removing any dewatering ambiguities and providing a fair method of compensating the contractor for dewatering. Other R&E duties included permitting and coordination with other utilities, City staff, County, and the public.  This project was completed in 2006.

SR9 Sewer Extension, City of Sedro-Woolley, WA

Sanitary Sewer Design and Construction

Status:  Completed 2010

Construction Cost:  $150,000 (local funding)

Description:  The goal of this project was to extend sewer service to the North of Sedro-Woolley along State Route 9 providing sewer service to Fire station 2 and possibly all residents within the northern City limits.  The overall scope of work performed by R&E on this project included: conveyance analysis, preliminary plans, budget analysis, construction plans and specifications, project inspection, contract administration, and construction management.  Among three design alternatives provided to the City for consideration, this project included the installation of 1000 lineal feet of 8-inch sanitary sewer, wetland delineation, bore and jack 18” steel casing, and HMA road patch.

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