Spokane County Septic Tank Elimination

Spokane County, Washington

Century West has provided design services for multiple Spokane County STEP and Interceptor projects over the last 20 years. Typically these projects consisted of design of gravity sewer to service existing residents that were currently on septic tanks. The projects included sewer mains, services, and roadway reconstruction over the project area. Our services included preparation of plans, specifications, cost estimates, and cultural resources survey. As part of the design, we utilized computer modeling software (HYDRA) to determine the ultimate sewer flows for pipe sizing and slope determination. We coordinated side sewer locations with property owners through mailers and a public meeting. We also provided bidding services which included responding to bidders’ questions and issuing addenda. Century West has provided these services on the following sewer basin projects:

  • Pine River (2009)
  • White Birch (2008-2009)
  • Sutters Phase 3 (2008)
  • Upriver Terrace (2007)
  • Vera Terrace (2007)
  • Weatherwood (2003)
  • Owens (2003)
  • Mission (2001)
  • Walnut (2001)
  • Easton Phase 2 (2000)
  • Valley Vista (1999)
  • North Spokane Interceptor
  • North Valley Interceptor