Main Stone Development Corporation Vesting Tentative Map


SCH Number
Lead Agency
Contra Costa County
Document Title
Main Stone Development Corporation Vesting Tentative Map
Document Type
MND - Mitigated Negative Declaration
Present Land Use
County General Plan land use designation is Delta Recreation and Resources (DR); COunty Zoning is A-2 and A-3 District.
Document Description
The proposed project would subdivide the site into four parcels and a remainder parcel as follows: Parcel A- 51.08 acres; Parcel B - 41.50 acres; Parcel C - 200.30 acres; Parcel D - 20.43 acres; and Remainder Parcel - 165.32 acres (127 acres of which are within an existing environmental easement)

Contact Information

Lashun Cross
Agency Name
Contra Costa County
Contact Types
Lead/Public Agency


Contra Costa
Cross Streets
Holland Tract Road and Tranquility Bay Road
Total Acres
Parcel #
23-010-001, 23-020-001 & 60-001
Rock Slough and Sand Mound Slough
Other Location Info
City/Nearest Community: Knightsen

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Conservation (DOC), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), Delta Protection Commission, Department of Water Resources, Resources Agency, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Development Types
Residential (Units 5, Acres 173), Other (Environmental Easement (127 acres))
Local Actions
Land Division (Subdivision, etc.)
Project Issues
Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Noise, Vegetation

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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