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STATE OF COLORADO <br />DIVISION OE MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman SL, Room 215 (r Q j, O ItAI~ Q <br />Denver, Colorado 80203 D l v[ S I o N O F <br />Phone: (303) 866-3567 M I N s RA L S <br /> <br />FAX: (303) 832-8106 G E O L O G Y <br /> 0.EC LAMATION•MINING <br /> EAFETY•SC IENCE <br /> Rill Owens <br /> Governor <br />February 2, 2005 <br /> Russell George <br /> Executive Director <br /> Ronald W. Cottony <br />Mrs. Karen and Mr. Ralf Topper Division Director <br />9628 Fallen ROCk Rd. Natural Resource rrunee <br />Conifer, CO 80433 <br />RE: Your Letters dated October 22, 2003 and September 27, 2004; and <br />December 7, 2004 E-mail Comments <br />on the June 14, 2004 Proposed DIMP Sampling Protocols <br />Cooley Reservoir & Fulton Wildlife Area Pit, Permit No. M-1999-034, AM-01 <br />Dear Mrs. and Mr. Topper: <br />The Division of Minerals and Geology has received and reviewed the above-referenced letters <br />regarding sampling activities and the proposed Well and Lake Sampling Protocols submitted by Mr. <br />Molen on Aggregate Industries' behalf. Thank you for taking the time to provide your input. This letter <br />responds to your concerns and suggestions. <br />After receiving a copy of Tri-County Health Department's ("TCHD") "Standard Operating Procedures" <br />and "DIMP Sampling Procedure" from me on October 25, 2004, Mr. Molen revised the June 21, 2004 <br />proposed sampling protocols to incorporate applicable TCHD procedures. The Division reviewed the <br />latest proposed protocols dated December 14, 2004, in our letter to Aggregate Industries dated <br />January 21, 2005, which was copied to you. A review of that letter will reveal that the Division <br />addressed a number of your comments therein. Several items need to be worked out between you <br />and Aggregate Industries, including: <br />1. Possible installation of a sampling port to avoid pump surging, and related costs and timing <br />2. The routing and disposition of purged well water to minimize erosion and flooding <br />3. Adequate notification prior to the sampling event <br />4. Concerns regarding liability for damage to the well and pumping equipment <br />Please keep in mind that per the Board Order, Well No. 32883, will be sampled twice -once before <br />pit dewatering begins, and once after. There is no provision in the Order for long-term monitoring of <br />the well. However, Aggregate Industries must develop a plan, for approval by the Division, to monitor <br />the gravel pit pond water for DIMP monthly for one year, and then quarterly until authorized by the <br />Division to discontinue. <br />Addressing Issues Raised in your October 22. 2003 Letter <br />The characteristics of DIMP are addressed to the Division's satisfaction in the latest protocols. As we <br />have discussed, my conversations with Colorado Department of Public Health and Environment <br />personnel in the Water Quality Control Division and Hazardous Materials and Waste Management <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />