2024-03-28_REVISION - M2015030 (2)

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Chavers Mining Resource DRMS Permit No.M-2015-030 Amendment No.2(AM-02) March 2024 Page 11 sufficient to cover out-of-priority depletions throughout the mining and reclamation process. Additional details regarding hydrology & water quality are provided in the Groundwater Monitoring and Mitigation Plan (Attachment 2). (2)No earthen dams will need to be constructed. (3) All surface areas, including spoil piles, will be stabilized to effectively control erosion using appropriate erosion control measures. 3.1.7 Groundwater—Specific Requirements: (1) The Site is located within Classified Area: City of Fort Lupton Wellfield, Weld County (WQCC Regulation No. 42). Water quality standards applicable to the Site are presented in the Groundwater Monitoring and Mitigation Plan (Attachment 2). (2)Not Applicable - The Site is located within a classified area. (3)Not Applicable - The Site is located within classified area. (4) Procedures for establishing compliance with standards promulgated by the WQCC are presented in the Groundwater Monitoring and Mitigation Plan (Attachment 2). (5) Details of the groundwater quality monitoring program for the Site are presented in the Groundwater Monitoring and Mitigation Plan(Attachment 2). (6) Monitoring wells MW-4, MW-5, and MW-6 will serve as the Point of Compliance wells for the Site. Details of the groundwater quality monitoring program for the Site are presented in the Groundwater Monitoring and Mitigation Plan(Attachment 2). (7) Details of the groundwater quality monitoring program for the Site are presented in the Groundwater Monitoring and Mitigation Plan(Attachment 2). (8)By implementing the groundwater quality monitoring program for the Site presented in the Groundwater Monitoring and Mitigation Plan (Attachment 2), ASCI will be able to demonstrate existing and reasonably potential future uses of groundwater are protected. (9) As detailed in the Groundwater Monitoring and Mitigation Plan (Attachment 2), ASCI will provide a written report within five(5) working days when there is evidence of groundwater discharges exceeding applicable groundwater standards or permit conditions imposed to protect groundwater quality. 3.1.8 Wildlife: No threatened or endangered species are present at the Site. (1) Wildlife habitat types currently present include pastureland and the South Platte River riparian corridor. The riparian corridor is outside the mining and backfill areas. (2)Neither habitat creation nor habitat management is part of the reclamation. The land will be returned to rangeland use.