County File #TP12-0026 - Clayton Valley Estates Access Road

2 Documents in Project


SCH Number
Lead Agency
Contra Costa County
Document Title
County File #TP12-0026 - Clayton Valley Estates Access Road
Document Type
MND - Mitigated Negative Declaration
Present Land Use
LU: Vacant Z: General Agriculture GP: Single-Family Res., Very Low Density

Document Description
The applicant seeks approval of a tree permit to allow the removal of twelve trees and work within the dripline of three additional trees to allow for the construction of a 2,500 linear foot section of 20-foot wide access road. The project also consists of the following elements: - Construction of two bioswales (approx. 0.18 acres total) for stormwater treatment and drainage - Construction of new drainage improvements along the new portion of roadway. - Earthwork involving approximately 9,015 cubic yards of existing soil.

Contact Information
Sean Tully
Contra Costa County Dept. of Cons. and Dev.
30 Muir Road
Martinez, CA 94553

Phone : (925) 674-7800


37°55'37"N 121°54'40"W
Contra Costa
Cross Streets
Marsh Creek Road and Diablo Parkway
Total Acres
Parcel #
075-200-021, -027

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (New Access Road)
Local Action
Other Action Other Action: Tree Permit
Project Issues
Aesthetic/Visual Biological Resources Geologic/Seismic Other Other Issues: Cultural Resources
Reviewing Agencies
Air Resources Board Cal Fire California Department of Parks and Recreation Caltrans, District 4 Department of Conservation Department of Fish and Wildlife, Region 3 Department of Water Resources Native American Heritage Commission Office of Emergency Services, California Regional Water Quality Control Board, Region 2 Resources Agency State Water Resources Control Board, Divison of Financial Assistance
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