News | August 7, 2017

Ross Valley Sanitary District Awards $9.7M Sewer Rehabilitation Construction Contract

District’s most recent Asset Management Program project will replace 8.4 miles of sewer lines

The Ross Valley Sanitary District (RVSD) has awarded a construction contract to Ranger Pipelines, Inc. in the amount of $9,769,729 for its FY 2016-17 Gravity Sewer Rehabilitation Project. The project will replace or rehabilitate 8.4 miles of gravity sewer lines using a mix of construction methods including open-cut removal and replacement, pipe bursting, cured in placed pipe (CIPP) and horizontal directional drilling.

As Board President Doug Kelly explained, “This construction project, when complete, will help reduce the risk of sanitary sewer overflows and support RVSD’s public service mission of safe, reliable wastewater utility service to our community.”

The project is the most recent to move to construction under RVSD’s Infrastructure Assets Management Plan (IAMP). With over 200 miles of aging wastewater lines in its system, RVSD developed the IAMP to consistently target and prioritize those areas of the system with the highest risk of sanitary sewer overflows due to structural degradation of the pipelines. RVSD currently has over $30M in construction projects in progress under the IAMP and has replaced or rehabilitated approximately 35 miles of wastewater pipelines in the first four years of the IAMP.

The FY 2016-17 Gravity Sewer Rehabilitation Project also helps meet the requirements of a 2013 Cease and Desist Order issued by the State of California’s Regional Water Quality Control Board in response to RVSD’s past record of sanitary sewer overflows. The IAMP was developed in coordination with the RWQCB incorporating risk-based infrastructure asset management methods into the State’s enforcement order.

Construction is expected to take approximately 12 months. Work will take place in the towns of Larkspur, San Anselmo and Fairfax at various sites including Scenic Road, Foothill Road, Allyn Avenue, Redwood Road, Floribel Avenue, Frustruck Avenue, Woodside Drive, Manzanita Road, Hillside Drive, Creek Road, Alameda Road and Sir Francis Drake Boulevard.

Engineering design services for this project were provided by Harris and Associates of Concord, California. Construction Management services are being provided by Vali Cooper and Associates of Emeryville, California.

About Ross Valley Sanitary District:
Established in 1899, Ross Valley Sanitary District is dedicated to protecting public health and preserving the environment. The District provides customers with high quality wastewater utility service through a system that has no avoidable sanitary sewer overflows, at the lowest sustainable cost. RVSD’s service area includes: Fairfax, San Anselmo, Ross, Larkspur, Bon Air, Sleepy Hollow, Kentfield, Kent Woodlands, Oak Manor, Greenbrae and Murray Park. RVSD operates and maintains 200 miles of collection sewer lines and 19 pumping stations which collect, pump and transport wastewater to Central Marin Sanitation Agency for treatment. For more information, visit

SOURCE: The Ross Valley Sanitary District (RVSD)