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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />April 19, 2010 <br />Ben Langenfeld <br />Greg Lewicki and Associates <br />11541 Warrington Court <br />Parker, Colorado 80138 <br /> <br />WWO, <br />APR `L 6 2M <br />piv w o1 ,?_. ms on, <br />COLORADO <br />DIVISION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />James B. Martin <br />Executive Director <br />Re: Chambers Pit, M-1979-205, Technical Revision, TR-04, Request for Clarifications and Corrections. <br />Dear Mr. Langenfeld, <br />The Division of Reclamation, Mining, and Safety (DRMS) received United/ Old Castle's request for a Technical <br />Revision (TR) for the above referenced permit on April 6, 2010. The requested revisions are for changes to mine <br />phasing, reclamation plans and removal of acreage from proposed disturbance. <br />DRMS staff has reviewed the TR and requests clarification on the following: <br />1) Please clarify that the TR is removing not only the acreage in the old Mining Area 3 from disturbance, but <br />also the associated conveyor belt system approved with the original amendment. <br />2) Please submit a daily and weekly site clean-up plan for when the portable asphalt plant is on site. The <br />plan should clearly state that the area will be cleaned of all asphalt based product over spill and reject <br />material daily. The collected materials must be stored in a clearly delineated area until recycled or <br />removed from the site. The storage site cannot have the potential to be exposed to storm or ground <br />water. No asphalt materials shall be allowed to be used as backfill material unless it is at least 6 months <br />old and placed above any potential saturation zone of groundwater when it reaches equilibrium after <br />reclamation. <br />3) Please clarify where the entrances to the pits will be on Map C-2. <br />Please have the requested clarifications and corrections submitted by May 3, 2010 in order for staff to review prior <br />to a decision by May 6, 2010. <br />If you need additional information please contact me at the Division of Reclamation, Mining and Safety, Grand <br />Junction Field Office, 101 S. 3rd St., Suite 301, Grand Junction, Colorado 81501, or by telephone no. 970.241.1117. <br />Sincerely, <br />G. Russell Means <br />Environmental Protection Specialist 11 <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines