FY 2024/2025 Gravity Sewer Improvements Project
Summary
SCH Number
2025010340
Lead Agency
Ross Valley Sanitary District
Document Title
FY 2024/2025 Gravity Sewer Improvements Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Residential Single Family
Document Description
The Ross Valley Sanitary District (RVSD) Fiscal Year 2024-2025 Gravity Sewer Improvements Project (#958) (Project) entails the construction and rehabilitation, within the existing alignment, of sanitary sewer mains, manholes, and related appurtenances within the town of Fairfax, unincorporated town of Kentfield, and town of San Anselmo, all of which are within the County of Marin. The primary objective of this Project is to relieve hydraulic and structural deficiencies and reduce groundwater infiltration associated with aging RVSD infrastructure.
The Project would rehabilitate approximately 14,042 linear feet (LF) of sanitary sewers and install 862 LF of new sanitary sewer with high-density polyethylene (HDPE) pipe ranging in size from 6 to 8 inches. Sewers would be replaced by open-cut removal and replacement (3,994 LF), pipe bursting (8,912 LF), and pipe reaming (1,136 LF) methods. Lower laterals and property-line cleanouts would also be replaced at all locations. Depths of the excavation would vary between 3 and 10 ft.
Work would also include the construction of 33 sanitary sewer manholes to replace existing manholes or construct new manholes. Manhole locations would require excavation and backfill of an area of approximately 8 × 8 ft, with varying depths projected to range from approximately 5 to 10 ft.
The rehabilitation of all sanitary sewer mains would occur within the existing alignment. Most pipelines either fall within public rights-of-way or designated easements running through private property. For work in backyard easements, portable equipment would be used to accommodate space restrictions and minimize impacts.
Contact Information
Name
Philip Benedetti
Agency Name
Ross Valley Sanitary District
Job Title
Senior Engineer
Contact Types
Lead/Public Agency / Project Applicant
Phone
Email
Name
Bridgette DeShields
Agency Name
Integral Consulting
Job Title
Principal
Contact Types
Consulting Firm
Phone
Location
Cities
Fairfax, San Anselmo
Counties
Marin
Regions
Citywide, Countywide
Other Location Info
Multiple locations, see NOC Attachment A for full list
Other Information
Cross streets for the City/nearest community:
Town of Fairfax (zip code: 94930): Sherman Avenue and Bolinas Road
Town of San Anselmo (zip code: 94960): Sir Francis Drake Boulevard between Suffield Avenue and Butterfield Road, Valley Road between West Court and Traxler Road, West Court, Skyline Road, Camino de Herera, Rutherford Avenue, Suffield Avenue, Hawthorne Avenue, and Bennit Avenue
Unincorporated town of Kentfield (zip code: 94904): Stadium Way, Sherwood Court, Lancaster Avenue, Berens Drive, Wolfe Canyon Road, Tamal Vista Lane, Kentdale Lane, and Wolfe Grade
Named creeks within two miles of the Project site include:
Corte Madera Creek, Deer Park Creek, Fairfax Creek, Larkspur Creek, Phoenix Creek, Ross Creek, San Anselmo Creek, San Rafael Creek, Sleepy Hollow Creek,
Tamalpais Creek
Schools within two miles of the Project site include:
A. E. Kent Middle School, ABC Academy Preschool, Anthony G. Bacich Elementary School, Archie Williams High School, Brookside Elementary School, Deer Park School, Hall Middle School, Heartwood Charter School, Hidden Valley Elementary School, Irene M. Hunt SchoolJames B. Davidson Middle School, Laurel Dell Elementary School, Manor Elementary School, Marin Academy, Marin Catholic High School, Mariposa Bilingual School, Montessori School of Central Marin, Old Firehouse School, Parkside Preschool and Daycare, Redwood High School, Ross School, Ross Valley Charter School, Ross Valley Elementary School, Ross Valley Nursery School, San Anselmo Montessori School, St. Anselm School, St. Patrick School, Sun Valley Elementary School, Tamiscal High School, Terra Linda High School, The Branson School, The Garden School, The Oak Hill School, The Ross Preschool, Wade Thomas Elementary School, White Hill Middle School
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality
Development Types
Other (Sewer rehab)
Local Actions
Sewer rehab
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Sewer Capacity, Tribal Cultural Resources, Vegetation, Wildfire
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
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