Santa Margarita Quarry Expansion Project / Conditional Use Permit and Reclamation Plan Amendment

4 Documents in Project


SCH Number
Lead Agency
San Luis Obispo County
Document Title
Santa Margarita Quarry Expansion Project / Conditional Use Permit and Reclamation Plan Amendment
Document Type
EIR - Draft EIR
Present Land Use
Hard Rock Mining & Processing/EX1-Extracitve Resource Area/Rural Lands and Agriculture
Document Description
The Applicant proposes to expand the existing boundaries of the quarry by an estimated 33 acres, thereby enlarging the "footprint" of the quarry from 160.1 acres to 193.1 acres. The proposed expansion would yield approximately 21.5 million tons of aggregate reserves. These reserves, in combination with existing entitled reserves, would result in the quarry producing 33.2 million tons of aggregate products over a 59-year period. Proposed reclamation activities would be initiated in those areas of the quarry that have been depleted of resources in a manner concurrent to ongoing mining operations. All proposed reclamation activities would be fully completed within 5 year of resource depletion (e.g., five years after mining activities have stopped). Lands within the quarry would be reclaimed to open space uses, including seasonal water storage, riparian habitat, oak woodland habitat, and chaparral vegetation. Based upon the above, the proposed project is defined as all mining operations associated with the proposed 33-acre expansion area and reclamation of the entire quarry site, as expanded. The full 193.1-acre site is referred to as either the Proposed Project area, or Proposed RPA area. No changes to the quarry's existing annual production volumes or intensity are proposed beyond what is currently permitted.

Contact Information

Xzandrea Fowler
Agency Name
San Luis Obispo County
Contact Types
Lead/Public Agency


San Luis Obispo
Cross Streets
El Camino Real
Total Acres
Parcel #
070-091-037,070-121-021,070-131-003, 070-131-018, 070-131-022,070-141-006,070-141-054, 070-154-0
State Highways
Hwy 58
Atascadero USD
Salinas River
Other Location Info
Santa Margarita

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 5 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency, Resources, Recycling and Recovery
Development Types
Industrial (Acres 193.1, Employees 15), Mining (Granite & Aggre)
Local Actions
Use Permit, Rec. Plan
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Solid Waste, Transportation, Vegetation, Wildfire, Wildlife

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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