Residentia/Residential and Industrial /Community Facilities
The Town of Moraga proposes to repair and reconstruct two culverts located in the Las Trampas Creek watershed along Bollinger Canyon Rd, between Joseph Dr and St. Mary's Rd. The purpose is to maintain existing storm drain conveyance and to stabilize an area adjacent to a storm drain outfall that has severely eroded. A section of Pipe 1 in poor condition would be replaced to maintain conveyance of storm water flows through the culvert. At Pipe 2, the outfall and adjacent slope will be armored with rock riprap and slope protection to stabilize the eroded area near the outfall. The stabilization solution for Pipe 2 requires fill of approximately 15 to 20 cy to stabilize the slope and culvert outfall. Not all of this fill would extend below the Ordinary High Water Mark (OHWM); the project footprint below the OHWM is approximately 175 sf. The project will also require the removal of approximately 8 trees.
California Department of Fish and Wildlife, Bay Delta Region 3California Department of Parks and RecreationCalifornia Department of Transportation, District 4California Native American Heritage CommissionCalifornia Regional Water Quality Control Board, San Francisco Bay Region 2California State Lands CommissionDepartment of Water ResourcesOffice of Emergency Services, CaliforniaResources Agency
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