Atria Lafayette – Repair of Existing Roadway Retaining Wall, County File #CDDP20-03005

Summary

SCH Number
2021020227
Lead Agency
Contra Costa County
Document Title
Atria Lafayette – Repair of Existing Roadway Retaining Wall, County File #CDDP20-03005
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Assisted Living Facility with block-type retaining walls supporting the main driveway above ravine corridor

Document Description
The applicant seeks approval to modify Development Plan County File #DP88-3007 to allow life safety repairs of the existing, primary driveway structure for the Atria Park Lafayette assisted living facility (constructed in year 2003), including installation of new soldier pile retaining walls with concrete cribbing and tie rods (maximum height 30 feet) along either side of the existing 250-linear-foot driveway, approximately 2,100 cubic yards of cut/fill grading, enlargement of the existing box culvert beneath the driveway to a maximum height of 19 feet and length of 64 feet, replacement of the existing roadway surface. The applicant also requests approval of a tree permit to remove up to 29 code-protected trees and work within the driplines of up to 21 trees for the required construction activities. Approximately 13,000 square feet of the approximately 27,275 square-foot project area is located within the restricted development area, therefore, the project also seeks approval of the County to perform work within the restricted development area.

Contact Information
Syd Sotoodeh
Contra Costa County, Department of Conservation and Development
Lead/Public Agency
30 Muir Road
Martinez, CA 94553

Phone : (925) 674-7815
syd.sotoodeh@dcd.cccounty.us

Location

Coordinates
37°55'28.272"N 122°5'43.008"W
Cities
Lafayette Pleasant Hill
Counties
Contra Costa
Regions
Countywide Northern California San Francisco Bay Area Unincorporated
Cross Streets
Pleasant Hill Road and Taylor Boulevard
Zip
94549
Total Acres
6.4
Parcel #
169-090-002
State Highways
24; 680
Schools
Larkey School, Contra Costa Christian Schools, Mary Jane’s Pre-S
Waterways
Murderers Creek, Reliez Creek, Happy Valley Creek, Grayson Creek, East Branch of Grayson Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Health/Safety Repairs of Driveway/Bridge)
Local Action
Use Permit
Project Issues
Aesthetics Air Quality Biological Resources Cultural Resources Geology/Soils Hydrology/Water Quality Noise Wetland/Riparian
Reviewing Agencies
California Air Resources Board (ARB) California Department of Conservation (DOC) 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 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 Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB) Delta Protection Commission Delta Stewardship Council Office of Historic Preservation San Francisco Bay Conservation and Development Commission (BCDC) State Water Resources Control Board, Division of Drinking Water

Attachments

Environmental Document
2) DP20-3005 OPR Summary Form   PDF 268 K 3) DP20-3005 Notice of Public Review_Letter   PDF 3025 K 4) DP20-3005_Initial Study   PDF 18061 K
NOC
1) DP20-3005 NOC and Env Doc Transmittal   PDF 173 K

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