Bollinger Canyon Road Culvert Repair Project

4 Documents in Project


SCH Number
Lead Agency
Moraga, City of (City of Moraga)
Document Title
Bollinger Canyon Road Culvert Repair Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Residentia/Residential and Industrial /Community Facilities

Document Description
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.

Contact Information
Edric Kwan
Town of Moraga
329 Rheem Blvd
Moraga, CA 94556

Phone : (925) 888-7025


37°50'37.13"N 122°6'21.32"W
Contra Costa
Cross Streets
Bollinger Canyon Rd and Joseph Dr
Total Acres
Parcel #
Town ROW
Las Trampas Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (storm drain culvert repair)
Local Action
Other Action Other Action: infrastructure
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Job Generation Minerals Noise Population/Housing Balance Public Services Recreation/Parks Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Land Use Cumulative Effects
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Department of Transportation, District 4 California Native American Heritage Commission California Regional Water Quality Control Board, San Francisco Bay Region 2 California State Lands Commission Department of Water Resources Office of Emergency Services, California Resources Agency

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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