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Selected Experience in Storm Drainage Projects



Storm Water Master Plan
Coos Bay, Oregon

The storm water system inventory and analysis provides data for planning, prioritizing, and designing storm water infrastructure for the City of Coos Bay. The existing system was field surface verified and assessed for condition and capacity. Topographic data was used to create maps delineating areas at risk of tidal flooding. The anticipated impact of EPA Phase II requirements for MS4 and future regulations was presented. Current and projected deficiencies for a 20-year planning period are identified.





Storm Water Master Plan
Bandon, Oregon

With an emphasis on planning, this document covers all aspects of the Bandon storm water system, from existing infrastructure and deficiencies through the planning and funding process for recommended projects. The $2.0 million in recommended projects are prioritized, with costs divided between developer and City responsibility and a recommended SDC cost for future construction.



Koos Bay Boulevard Storm Drain Improvements
Coos Bay, Oregon

Storm drain project involved over 400 lineal feet of 36" storm drain in highly congested traffic area involving Highway 101, Koos Bay Boulevard and Central Oregon & Pacific Railroad. Significant permitting was required from both DSL / Corp of Engineers and Central Oregon & Pacific Railroad. Ocean Boulevard. The project involved work within tidal waters for installation of a new 36" tide gate. Railroad crossing required trenchless technologies for installation of 42" casing that held the 36" storm drain pipe.



Georgia-Pacific Site Improvements
City of Coquille

Construction of a new access road from Highway 42 onto the site included channelization widening for a turn lane on Highway 42. Related storm drain improvements included placement of a 96-inch RCP culvert which utilized a partial bury of the culvert for a natural streambed consistent with current fish passage design. Permits were secured from Division of State Lands and the Corps of Engineers to allow placement in a wetlands area and mitigation plans were also developed to replace the impacted wetlands of the overall site improvement project. Temporary bypass pumping was required for the 96-inch culvert placement.