Chevron Monitoring Wells on Hollister Avenue

Chevron Monitoring Wells on Hollister Avenue

The project consists of the installation of two groundwater monitoring wells in wetlands south of Hollister Avenue on Santa Barbara Airport property in the appealable jurisdiction of the Coastal Zone. Installation of these wells is required by the Santa Barbara County Fire Department as part of the site assessment for MTBE contamination associated with a former Chevron gas station that was located at 6470 Hollister Avenue. Five monitoring wells were previously installed outside the wetland area as part of the site assessment. Based on the data collected from existing wells, the County Fire Department has requested installation of 2 additional wells south and east of the existing wells to further delineate the down-gradient extent of MTBE in groundwater. The 6 inch wide wells would be manually drilled to a depth of ~10 ft. Soil samples would be collected from the boring material and the wells would be completed with 2 inch diamter Schedule 40 PVC casings that would extend above ground and be encased in a well monument set into a small concrete pad so that the wells can be located year-round. The proposed wells would be fully removed after one year of quarterly monitoring or as directed by the County Fire Department. The area occupied by the wells would then be filled in and replanted with native wetland vegetation. The proposed project also includes the restoration of 4 sf of habitat to mitigate the temporary loss of wetland habitat associated with the installation of the 2 wells.

Santa Barbara

Santa Barbara

Air Resources Board, Airport/Energy Projects, California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 5 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance

Other (groundwater sampling and ecological restoration)

Coastal Permit

Aesthetics, Air Quality, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Population/Housing, Public Services, Recreation, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildlife