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,~ <br />Mark A. Heffner, Ecologist • ~eta[ion ecology <br />37 East Colorado Avenue and reclama[ion planning <br />Denver, CO 80210 Visual impac[ analysis <br />(303) 722-9067 (Voice and Fax) Documen[ary pho[ography <br />April 16, 1999 <br />Mr. Bob Deaver <br />Greeley Gas Company <br />120 South 6th <br />canon city, c0 s121z ~~CEIVED <br />RE: Agreement regarding mining in [he vicinity of your gas line. MAY Q 5 7999 <br />Dear Mr. Deaver: Jlv1 ~'cn OlMinere9 6 Geology <br />Thank you for your review and comments on Castle Concrete's proposed Holnam Gravel Pit <br />application, particulazly with respect to the potential effects on your gas line which crosses the <br />southern edge of the property. As discussed on April 13, 1999, Castle Concrete will strictly observe <br />the following precautions. This list provides the terms of an agreement between Castle Concrete and <br />Greeley Gas Company regarding the mining of gravel on this site. <br />1. Greeley Gas Company, prior to Castle Concrete initiating mining, shall mark the exact <br />location of the gas line along the entire length of the gas line that is adjacent to or within <br />approximately 200 feet of land that will be mined. <br />2. Castle Concrete shall define and mazk a line not less than 100 feet from the exact location of <br />the gas line. This line shall define the maximum extent of the top of the excavation slope or working <br />face adjacent to the gas line corridor. No removal of material shall occur between this 100 foot line and <br />the actual location of the gas line. <br />3. In the event erosion, slope collapse or other processes results in an encroachment of the <br />excavation into the 100 foot setback, Castle Concrete shall take immediate and reasonable action to <br />return the encroachment to at least the 100 foot setback line using methods appropriate to the <br />situation so as to avoid the possibility of exposing or damaging the gas line. <br />If this is acceptable to you please provide myself with a letter affirming your acceptance of these terms. <br />If you wish to discuss this further, please call. A copy of this letter and your affirmation must be <br />provided to the Division of Minerals and Geology. Once I have your letter that submittal can be <br />made. <br />Thank you for your consideration and help in resolving this issue. <br />Mark A. <br />cc: Rick <br />