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COLORADO <br /> Division of Reclamation, <br /> so Mining and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street,Room 215 <br /> Denver,Colorado 80203 <br /> July 25,2019 <br /> Mr. Stan Opperman <br /> Asphalt Paving Company <br /> 14802 W 44th Ave <br /> Golden,CO 80403 <br /> Re: Ralston Quarry,Permit No.M-1974-086,Technical Revision Approval, Revision No. TR-2 <br /> Mr. Opperman: <br /> On July 25, 2019 the Division of Reclamation, Mining and Safety approved the Technical Revision application <br /> submitted to the Division on June 26,2019,addressing the following: <br /> Revision to establish a determination of compliance with SEO requirements for mine pit as required by AM04. <br /> Please note the inflow/outflow accounting requirements, and the stormwater discharge requirements specified on the <br /> second page of the SEO seepage analysis letter attached. <br /> The terms of the Technical Revision TR02 approved by the Division are hereby incorporated into Permit No.M-1974- <br /> 086. All other conditions and requirements of Permit No. M-1974-086 remain in full force and effect. <br /> If you have any questions,please contact me. <br /> Sincerely, <br /> 67,A. <br /> Eric C. Scott <br /> Environmental Protection Specialist <br /> Enclosure— SEO Ralston Quarry Groundwater Seepage Evaluation dated July 24, 2019 <br /> e co <br /> O C09` <br /> 1313 Sherman Street, Room 215, Denver,CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br /> jJared Polls, Governor Dan Gibbs, Executive Director Virginia Brannon, Director <br />