Ione Quarry Expansion Project 2021 (Amended Use Permit and Reclamation Plan)


SCH Number
Lead Agency
Amador County
Document Title
Ione Quarry Expansion Project 2021 (Amended Use Permit and Reclamation Plan)
Document Type
CON - Early Consultation
Present Land Use
Mine/Quarry; Mine ID 91-03-0011 Specialty Granules (Ione) LLC (SGI) operates Ione Quarry, an approximately 330-acre hard rock mining operation within an unincorporated area of AmadorCounty (County), approximately three miles west of the city of Ione. SGI has been continuously mining for hardrock at the Ione Quarry (project site) since the site was permitted for mining, processing, and offsite shipment in 1989.
Document Description
The applicant, Specialty Granules (Ione), LLC (SGI) proposes to expand the existing footprint and depth of Ione Quarry to access additional rock reserves. This expansion requires an amended Conditional Use Permit (CUP) and an amended Reclamation Plan that allows for the expanded proposed mining area and additional stockpiling area(s) for the additional cap rock (the proposed project ). The project does not propose an increase in the current rates of production at the quarry or changes to other operations. After the expansion, the quarry's total surface disturbance would have increased from approximately 56 acres to approximately 136 acres and the depth would b approximately 280 ft. below mean sea level [MSL], compared to 325 MSL under the existing conditions. The stockpile area's total surface disturbance would be approximately 86 acres and have a maximum elevation of 560 MSL.

Contact Information

Chuck Beatty
Agency Name
Amador County
Contact Types
Lead/Public Agency


Cross Streets
1900 State Highway 104 Ione, Cross St Michigan Bar Rd
Parcel #
005-080-016, 005-080-020
State Highways
SR 104
Other Location Info
Approximately 3 miles west of the City of Ione, in Unincorporated Amador County, California.

Notice of Completion

Review Period Start
Review Period End
Development Types
Mining (Mineral Meta-andesite)
Local Actions
Use Permit
Project Issues
Preliminary Review- Scoping Session
Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (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 Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), Central Valley Flood Protection Board, Department of Toxic Substances Control, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Drinking Water


Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

Download CSV Download All Attachments New Search Print