United States Gypsum Company (USG) Expansion/Modernization Project (DEIR)

7 Documents in Project


SCH Number
Lead Agency
Imperial County
Document Title
United States Gypsum Company (USG) Expansion/Modernization Project (DEIR)
Document Type
NOP - Notice of Preparation of a Draft EIR
Document Description
Generally the proposed project consists of construction of new buildings, a doubling in wallboard production by removing one operation production wallboard line and installing a new, state-of-the-art high speed line and increased mining of gypsum from 1.1 million tons per year (mty) to approximately 1.9 mty on land reserves owned and mined by USG. The Proposed Project also consists of expanding existing and planned quarry areas and creating a new overburden storage site. To accommodate the expanded operations water usage will increase. The project will also include modernizing the existing warehouses, storage structures, rail loading facility and upgrading electrical transmission lines, maintaining the 26-mile narrow gauge rail line which runs between the Plaster City plant and the quarry, replacing the 26-mile existing pipeline that runs between Ocotillo and the plant relocating a short portion of the interstate rail that runs through the Plaster City Plant. Accumulated off-specification materials are intended to be recycled.

Contact Information

Jurg Heuberger
Agency Name
Imperial County Planning and Building Department
Contact Types
Lead/Public Agency


El Centro
Cross Streets
Split Mountain Road
State Highways

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 Parks and Recreation, California Department of Transportation, District 11 (DOT), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB), California State Lands Commission (SLC), Department of Fish and Wildlife, Region 6, Resources Agency, California Native American Heritage Commission (NAHC)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC)
Development Types
Mining , Power:Electric Transmission Lines
Project Issues
Air Quality, Biological Resources, Hydrology/Water Quality, Transportation

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.

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