Skyline Mine, TLT Enterprises (UP #2023-010, RP #2023-001, EIR #2023-004)


SCH Number
Lead Agency
Lassen County
Document Title
Skyline Mine, TLT Enterprises (UP #2023-010, RP #2023-001, EIR #2023-004)
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Document Description
The County of Lassen will be the Lead Agency in processing applications for a Use Permit (UP) and Reclamation Plan (RP) and preparing an Environmental Impact Report (EIR) for a proposed surface mining operation. The proposed project at the Skyline Aggregates site would include mining, processing, and reclamation activities by Hat Creek Construction and Materials, Inc. on approximately 460 acres of a 640-acre parcel. A Draft EIR is being prepared by the applicant’s consultant and will be reviewed by Lassen County and, if necessary, a third-party consultant. This Notice of Preparation (NOP) has been prepared to solicit comments from interested agencies as to the scope and content of the environmental information that is germane to your agency's statutory responsibilities in connection with the proposed project.

Contact Information

Nancy McAllister
Agency Name
Lassen County
Job Title
Senior Planner
Contact Types
Lead/Public Agency


Total Acres
Parcel #
State Highways
Highway 139, Highway 36
Lassen Community College, Lassen High School, McKinley Elem
27, 34

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 Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Resources Recycling and Recovery, California Department of Transportation, District 2 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Natural Resources Agency, California Regional Water Quality Control Board, Lahontan South Lake Tahoe Region 6 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Native American Heritage Commission (NAHC), California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)
Development Types
Mining (Mining, Processing, and Reclamation )(Mineral Aggregate)
Local Actions
Use Permit, Reclamation Plan
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Energy, Fiscal Impacts, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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.

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