Combined Sewer Overflow (CSO) Reduction Project

City of Snohomish
Washington

About

BHC provided engineering services including planning, XPSWMM model analysis, design, permitting, and construction oversight for this multi-phased project. The project included the complex design of a separated wastewater and stormwater collection system and the Stormwater and Sewer Pump Station that now receives separated flows from a 248-acre basin and routes flow to either the WWTP or a Stormwater Pond.

Features:

  • XPSWMM model analysis
  • Pump station designed to welcome public access and connect to community trail system
  • Rain garden, biofiltration swale, and conveyance design
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