Unimin Pond J Dam Reconstruction/Relocation Project
2 Documents in Project
Summary
SCH Number
2008072021
Lead Agency
Amador County
Document Title
Unimin Pond J Dam Reconstruction/Relocation Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
"X" - Special Use Permit / MRZ - Mineral Resource Zone
Document Description
Pond "J" project at the Unimin site in Ione. Pond J is located approximately one mile southwest of the mine's main processing plant. An existing dam, about 80 feet high and 1,000 feet in crest length is located at the site. The proposed dam would be located approximately 1,000 feet to the existing dam's southwest. Most of the area between the existing and proposed dam has been stripped and graded as part of the past mining and dam construction activities.
Proposed are two segments to the new dam: Section 1 would be located at Pond J's southwest side and will be approximately 800 feet long and 35 feet high; Section 2 would be located along Pond J's south and southeast sides and will be approximately 1,450 feet long and up to 30 feet high. Once the dam is completed, Pond J would be able to hold approximately 1,544 acre feet of water and cover a surface area of approximately 68.4 acres. This area would eventually be filled with mine tailings (e.g. sand). Approximately 110,000 cubic yards of fill material would be used for the dam and approximately 10,000 cubic yards would be associated with the excavation and backfill for the dam.
Contact Information
Name
Nathan Lishman
Agency Name
Amador County Planning Department
Contact Types
Lead/Public Agency
Phone
Location
Cities
Ione
Counties
Amador
Cross Streets
Highway 124 and Buena Vista Road
Zip
95640
Total Acres
202 +/-
Parcel #
005-190-021
State Highways
124, 104, 88
Railways
Southern Pacific
Airports
Private Airstrip
Township
6N
Range
9E
Base
MDB&M
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Major Industrial Projects, California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California State Lands Commission (SLC), Caltrans, Division of Aeronautics, Department of Water Resources, Resources Agency, Resources, Recycling and Recovery, California Department of Transportation, District 10 (DOT)
State Reviewing Agency Comments
California Department of Transportation, District 10 (DOT)
Development Types
Mining (Mineral Sand for glass), Other (Reconstruction of dam to further mineral extraction)
Local Actions
Grading Permit
Project Issues
Air Quality, Geology/Soils, Hydrology/Water Quality
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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.