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© COLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street,Room 215 <br /> Denver,Colorado 80203 <br /> October 3,2019 <br /> Mr.Nick Martin <br /> Aggregate Industries-WCR, Inc. <br /> 1687 Cole Blvd. Ste. 300 <br /> Golden,CO 80401 <br /> Re: Morrison Quarry,Permit M1973-021,Technical Revision Approval,Revision TR06 <br /> Mr. Martin: <br /> On October 3, 2019 the Division of Reclamation, Mining and Safety approved the Technical Revision application <br /> submitted to the Division on September 26,2019,addressing the following: <br /> Installation of three groundwater monitoring wells near South Quarry to a well bottom depth of 6400 feet EL. <br /> DRMS will require the submittal of final locations, well drilling logs, and construction diagrams upon completion of <br /> the wells. <br /> As stated in the adequacy response for the TR,the wells will be required to be deepened or replaced prior to the floor <br /> of the quarry being excavated to a depth below 6450 feet EL. <br /> The terms of the Technical Revision TR06 approved by the Division are hereby incorporated into Permit M1973-021. <br /> All other conditions and requirements of Permit M1973-021 remain in full force and effect. <br /> If you have any questions,please contact me. <br /> Sincerely, <br /> Eric C. Scott <br /> Environmental Protection Specialist <br /> Cc: Jeremy Deuto via email <br /> ti.pF c�!p.P <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us I 'o <br /> �r <br /> Jared Polis, Governor I Dan Gibbs, Executive Director ( Virginia Brannon, Director *, <br /> « 1876 <br />