Martin Slough Interceptor
City of Eureka, Humboldt County
Project Abstract
The Martin Slough Interceptor consists of the design and construction of a wastewater interceptor system that will improve the water quality of the Martin Slough Watershed and Humboldt Bay by reducing incidents of Sanitary Sewer Overflows (SSOs). This phase involves constructing approximately 1-1/2 miles of wastewater interceptor pipeline from the City of Eureka’s ‘O’ Street lift station to the City’s Golf Course lift station. The new interceptor pipeline will capture and convey wastewater SSOs occurring at the ‘O’ Street lift station to the City’s Golf Course lift station.
Project Goals
- The main project goal is to reduce the incidents of Sanitary Sewer Overflows (SSO’s) into the environment.
- Another goal is to reduce or eliminate odors in various parts of the wastewater collection and transport system by creating a direct and efficient path of travel to the wastewater treatment facility. Odor reduction will be accomplished by drastically shortening the transport time.
- Another goal is to reduce maintenance costs on the collection and transport system by creating a more direct and efficient path of travel to the wastewater treatment facility. By drastically shortening the transport time the generation of hydrogen sulfide gas will be diminished, thus reducing corrosion to the sewers, manholes, and sewer lift stations.
- Another goal is to improve the wastewater collection and transport system reliability and safety by eliminating 16 aging sewer lift stations, each one having a potential for failure, and by freeing up capacity in portions of the existing wastewater system and remaining pump stations by diverting flows away from the older clay pipe system and into the new Martin Slough system. Additional capacity equates to an increased factor of safety for preventing SSO’s into the environment.
- Another goal is to improve pumping efficiency by replacing 16 lift stations with a single, efficient, state-of-the-art pump station. This will reduce air pollution by dramatically reducing energy usage (power generation causes air pollution) and operation and maintenance costs. The Martin Slough Interceptor Benefit Cost Analysis, dated February 20, 2003, estimates an annual savings of approximately $158,000 will be realized after construction of the Martin Slough Interceptor project.
- Another goal is to accommodate the planned development of the unincorporated area of Humboldt County southeasterly of Eureka within the Martin Slough Drainage Basin, by accepting wastewater flows for the ultimate development condition of that area, in conformance with the currently approved County General Plan.
Budget
IRWMP Proposition 50: $2,572,905
Funding Match: $4,859,286
Total Project Cost: $7,432,191
Other Project Information:
On-line Project Management Tool
Feasibility Study