SFPUC Peninsula Watershed Geotechnical Investigation Project

SFPUC Peninsula Watershed Geotechnical Investigation Project

The San Francisco Public Utilities Commission (SFPUC) proposes to conduct geotechnical investigations at several sites within the SFPUC Peninsula watershed land in unincorporated San Mateo County. These investigations would increase the SFPUC's understanding of local site conditions crucial to successful implementation of the proposed Habitat Reserve Program (HRP) and the Crystal Springs San Andreas Transmission Upgrade Project (CSSA Project) in the SFPUC Peninsula watershed by identifying the geologic, hydrologic, and seismic conditions project areas. The proposed geotechnical investigations for the HRP consists of the installation of ~17 piezometers (water pressure meters) in boreholes as well as trenches, 2 soil test pits, 28 hand augured soil testing sites, and 20 surface soil sampling sites. The proposed geotechnical studies in support of the CSSA Project would consist of up to 5 trenches to locate the San Andreas Fault and determine its slip rate. No permanent facilities would be developed as part of the proposed project. All proposed activities would take place within the boundaries of SFPUC-owned watershed land. The hRP geotechnical investigations would occur over an ~3 week long period, with work at individual sites taking one day or less. The fault trenches that would be conducted in support of the CSSA Project would require ~3 weeks for excavation and mapping. The geotechnical investigations are expected to occur between January 2010 and September 2010.

Belmont, Hillsborough, San Bruno, San Mateo

San Mateo

California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency

Other (geotechnical investigations)

agency approval

Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Recreation, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildlife