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Omya California is submitting to the Forest and County, for permitting, an amended Plan of Operations and Reclamation Plan for an expansion of 28.8 acres for the Butterfield 3 Quarry and 22 acres for the Sentinel Quarry.
T.3 N., R.1 W., Sec.23
District: Big Bear Ranger District
Omya Sentinel & Butterfield Quarries Expansion - Federal Register Notice of Intent (2/28/2013) (PDF 205kb)
Omya Sentinel & Butterfield Quarries Expansion - Joint NOP/NOI (PDF 108kb)
Omya Sentinel & Butterfield Quarries Expansion - Amended Plan of Operations (PDF 5161kb)
Appendix 1A - Sentinel Quarry Expansion Decision Notice & FONSI (02/2002) (PDF 1449kb)
Appendix 1B - Sentinel Quarry Expansion Approved Reclamation Plan (PDF 553kb)
Appendix 2 - Sentinel Quarry Expansion Environmental Assessment (PDF 5647kb)
Appendix 3A - Sentinel Quarry Air Quality Permits 2012 (PDF 4033kb)
Appendix 3B - Patterns of Carbonate Dust Deposition (PDF 1458kb)
Appendix 4A - Groundwater Extraction and Well Permits (PDF 411kb)
Appendix 4B - Hydrology Report Proof of Groundwater Extraction (PDF 643kb)
Appendix 5 - Approved Revegetation Plan (PDF 3054kb)
Appendix 6A - Sentinel Quarry Expansion Informal ESA Section 7 Consultation & Concurrence (9/2000) (PDF 530kb)
Appendix 6B - Sentinel Quarry Expansion Biological Assessment (5/2000) (PDF 8814kb)
Appendix 6C1 - Sentinel Quarry Expansion Biological Survey (1997) (PDF 1648kb)
Appendix 6C2 - Butterfield 5 Overburned Expansion Biological Survey and Additional Correspondence (PDF 766kb)
Appendix 6D - Butterfield 3 Expansion Area Biological Survey (8/2009) (PDF 6512kb)
Appendix 6E - Spotted Owl Updates (PDF 1595kb)
Appendix 7 - Geology - Omya (1994) (PDF 1124kb)
Appendix 8 - Sentinel and Butterfield Mine Reclamation Slope Stability Report (2012) (PDF 18023kb)
Appendix 9A - Archeological and Cultural Resource Surveys (PDF 720kb)
Appendix 9B - Cultural Resources Inventory (1984) (PDF 1342kb)
Appendix 10 - Approved Storm Water Monitoring Program - Cover and Approval Only (PDF 85kb)
Appendix 11A - Carbonate Plant Mitigation Proposal (11/28/2011) (PDF 288kb)
Appendix 11B - Details of the Rattler Mining Claims Relinquishment (PDF 163kb)
Appendix 12 - Omya Reclamation Report 2011 (PDF 1363kb)
Appendix 13 - Spill Prevention and Control Plan (PDF 368kb)
Omya Sentinel & Butterfield Quarries Expansion - San Bernardino Sun Legal Notice (2/22/2013) (PDF 27kb)
Omya Sentinel & Butterfield Quarries Expansion - Big Bear Grizzly Legal Notice (PDF 127kb)
Omya Sentinel & Butterfield Quarries Expansion - Lucerne Leader Legal Notice (2/21/2013) (PDF 116kb)
Omya Sentinel & Butterfield Quarries Expansion - Final Initial Study (PDF 10935kb)
Butterfield Sentinel_Draft EIR-EIS_2018 (PDF 25030kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix A - Public Scoping Process (PDF 21766kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix B - Initial Study (PDF 11004kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix D - RESERVED (PDF 68kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix E - Air Quality & Greenhouse Gases (PDF 13663kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix F - Biological Resources (PDF 31209kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix G - Cultural Reports (PDF 2524kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix K - Storm Water Pollution Prevention Plan (PDF 8175kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix L - EIR-EIS Distribution List (PDF 297kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix C - Plan of Operation-Reclamation_Part 1 (PDF 77901kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix C - Plan of Operation-Reclamation_Part 2 (PDF 72736kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix H - Geology and Soils Report_Part 1 (PDF 18689kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix I - Hydrology & Water Quality (PDF 67478kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix J - Scenery Report (PDF 16076kb)
Butterfield Sentinel_Draft EIR-EIS_Appendix H - Geology and Soils Report_Part 2 (PDF 72574kb)
Omya_Joint Notice of Availability_July 2018 (PDF 100kb)
FederalRegister Notice of Availability (PDF 187kb)
San Bernardino Sun_Final Proof (Signed) (PDF 1199kb)
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