Stevens Creek Quarry Use Permit and Reclamation Plan Amendment

Stevens Creek Quarry Use Permit and Reclamation Plan Amendment

The use permit would authorize a revised mine plan and provide use permit coverage to include Parcel A, Parcel B, and the Licensed Area. The use permit would allow excavation deeper within Parcel B than is currently authorized by the approved Reclamation Plan and relocation of the concrete recycling activities to Parcel B from where they currently exist on Parcel A. Some existing Quarry buildings would remain, while others would be removed as part of the Project. No active quarrying, stockpiling, or processing of materials is proposed to occur in the Licensed Area. However, SCQ is requesting that the Licensed Area be included within the boundaries of the Reclamation Plan Amendment to allow further latitude in slope stability to the east of and in the northwest corner of Parcel B. The proposed reclamation plan amendment includes a revised slope design to correct the potential slope instability identified in the western pit slope, updated plans for stormwater flow, and builds on the existing, approved approach to reclaim the quarry pit to meet the final reclaimed site elevations by backfilling it via a combination of using overburden excavated on-site during mining activities and fill materials imported from offsite locations. Because it cannot now be known with sufficient certainty how much fill material will be available for import from offsite locations, the Project includes two options for the reclaimed slopes: Option A would be associated with 11.7 million cubic yards of fill; Option B would be associated with 20.5 million cubic yards of fill. No changes are proposed relative to operational parameters (e.g., production rates or truck trips) or to the processing facilities and equipment currently used for mining.

Cupertino

Santa Clara

Countywide

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 Resources Recycling and Recovery, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB)

California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB)

Mining (Use Permit for existing quarry)(Mineral aggregate)

Use Permit

Air Quality, Greenhouse Gas Emissions, Noise, Transportation, Wetland/Riparian