MLRR Grassy Mountain - Consolidated Permit Application Documents

Appendices

Appendix A: Patented/Unpatented Mining Claims

Appendix B: Baseline Data Reports

• B1. Air Quality Resources Baseline Report 
  
• B2. Aquatic Resources Baseline Report 
  
• B3. Areas of Critical Environmental Concern Research Natural Areas Baseline Report 
  
• B4. A Cultural Resource Inventory of 830 Acres for the Grassy Mountain Mine Project – withheld from public review 
• B5. Environmental Justice Baseline Report 
• B6. Baseline Geochemical Characterization Report 
• B7. Geology and Soils Baseline Report 
• B8. Grazing Management Baseline Report 
• B9. Groundwater Baseline Reports 
• B10. Land Use Baseline Report 
• B11. Noise Baseline Report 
• B12. Oregon Natural Heritage Resources Baseline Report 
• B13. Outstanding Natural Areas Baseline Report 
• B14. Recreation Baseline Report 
  
• B15. Socioeconomics Baseline Report 
  
• B16. Surface Water Baseline Report 
  
• B17. Terrestrial Vegetation Baseline Report 
  
• B18a. Transportation Baseline Report 
  
• B18b. Transportation Baseline Traffic 
  
• B18c. Transportation Baseline Trip Generation 
  
• B19. Visual Resources Baseline Report 
  
• B20. Wetland Delineation Report 
  
• B21. Wild, Scenic, or Recreational Rivers Baseline Report 
  
• B22. Wildlife Resources Baseline Report 
• B23. Work Plans, Environmental Baseline Study
  

Appendix C: Design Reports

• C1. Road Design Report 
  
• C2. Portal Design Report 
  
• C3. Mill Design Report 
  
• C4. Tailings Design Report 
  
• C5. Well Field Design Report 
  
• C6. Calico – Grassy Mountain 34.5kV Line 
  
• C7. Wastewater Facilities Preliminary Engineering Report 
  

Appendix D: Management Plans

• D1. Reclamation Plan 
  
• D2. Tailings Chemical Monitoring Plan 
  
• D3. Waste Management Plan 
  
• D4. Stormwater Pollution Control Plan 
  
• D5. Quality Assurance Plan 
  
• D6. Emergency Response Plan 
  
• D7. Toxic and Hazardous Substances Transportation and Storage Plan 
  
• D8. Cyanide Management Plan 
  
• D9. Petroleum-Contaminated Soil Management Plan 
  
• D10. Interim Management Plan 
  
• D11. Inventory of Project Monitoring Plans 
  
• D12. Monitoring Proposal for Groundwater and Facilities 
  
• D13. Safety Training Plan 
  
• D14. Wildlife Protection Plan 
  
• D15. Wildlife Mitigation Plan 
  
• D16. Inadvertent Discovery Plan 
  
• D17. Noxious Weed Monitoring and Control Plan 
  
• D18. Spring and Seep Monitoring and Mitigation Plan 
• D19. Noise Monitoring Plan
  

Appendix E: Permit Applications (OAR 632-037-0077)

• E1. Grassy Mountain Mine Standard Air Contaminant Discharge Permit
  
• E2. Malheur County Land Use Compatibility Statement (LUCS) 
• E3. Abbreviated Operating Permit Application – Grassy Mountain Basalt Borrow Quarry 
• E4. Abbreviated Operating Permit Application – Grassy Mountain Closure Cover Borrow Areas Quarry 
  
• E5. ODEQ Storm Water Permit Application 
• E6. Grassy Mountain Tailings Dam, Approval of the TSF Revision 0 Plans and Specification 
• E7. Permit Application for the Water Pollution Control Facility-Onsite facility (septic tank permit) 
• E8. Conditional Approval Water System ID #4195624 
• E9. OWRD Water Rights Amendment
  

Appendix F: Grassy Mountain Cemented Rock Fill Characterization Report 

Appendix G: Grassy Mountain Gold and Silver Project, Numerical Hydrogeologic Assessment 

Appendix H: Ecological Risk Assessment for Proposed Tailings Storage Facility 

Appendix I: Certificate of Liability Insurance 

Appendix J: Alternatives Assessment Report 

Supplemental Files

10/9/2023 Consolidated Permit Application (Superseded)

12/21/2021 Consolidated Permit Application (Superseded)