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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman St. Room 215 <br />Denver, CO 80203 <br />November 27, 2018 <br />R. Chauncey Luttrell <br />Grey Rock Aggregate Company, LLC <br />PO Box 342 <br />Montrose, CO 81401 <br />Re: Grey Rock Aggregate Company, Moonscape Pit M-1997-027, Technical Revision No. 2 (TR -02) Responses <br />Received <br />Dear Mr. Luttrell: <br />On June 15, 2018, the Division issued an Adequacy Review to Grey Rock Aggregate Company, LLC, and <br />requested documents. On October 30, 2018, the Division received responses and documents from Greg <br />Lewicki and Associates, regarding the Adequacy Review. <br />1. A letter from Delta County granting permission to use glass in Road Base on any road in Delta <br />County. Response is Not Adequate <br />2. Will the road base be for Chip Seal, Asphalt orjust gravel Road Base? Please clarify the application <br />in detail of the material. Response is Adequate <br />3. Will the breakdown of glass fragments create unnecessary dust that could be detrimental to human <br />health and safety? Response is Adequate <br />If you cannot address issue number 1 by November 30, 2018 please request an extension to the decision <br />due date to ensure adequate time for the Division to review materials. An extended decision due date of <br />November 30, 2018 has been set. <br />The Division will continue to review your Technical Revision and will contact you if additional information <br />is needed. <br />If you need additional information please contact me at the Division of Reclamation, Mining and Safety, 101 <br />S. 3rd Street, Suite 301, Grand Junction, CO 81501, by telephone 970.242.5025 or by email at <br />stephanie.mitchell@state.co.us. <br />1313 Sherman St. Room 215 Denver, CO 80203 P (303) 866-3567 F <br />John W. Hickenlooper, Governor I Robert W. Randall, Executive Director I Virginia Brannon, Director <br />