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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 21 S <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />July 5, 2002 ~ <br /> <br />JUL ~ ~~ ?~"?~ <br />Mr. Richard Johnson <br />United Companies of Mesa County~o1" .. <br />P. O. Box 3609 <br />Grand junction, Colorado 81502 <br />r/ <br />RE: Preston Pit Extension, Permit No. M-1980-022, Technical Revision No. <br />Review <br />Dear Mr. Johnson: <br />DIVISION O F <br />MINERALS <br />GEOLOGY <br />0.EC LAMATION <br />MINING•SAFETY <br />am ovens <br />Governor <br />Greg E. Walther <br />Executive Director <br />Ronald W. Cattany <br />Acting Divizion Director <br />1 Second Adequacy <br />Thank you for your application for Technical Revision No. 1, submitted in response to problems noted <br />in DMG's report for the March 29, 2002 inspection of this site. This revision cannot be approved until <br />the following adequacy issues have been adequately addressed. Please respond to these issues as <br />soon as possible, but no later than July 9, 2002 so the decision due date of July 10, 2002 can be met. <br />If your adequate response, or a written request for extension of the decision date is not received by July <br />9, 2002, this application may be denied. <br />ADEQUACY ISSUES <br />1. Response acceptable. <br />2. The map originally submitted with the TR-01 application and the revised map submitted with the <br />preliminary adequacy review response show several sections of the island slopes with grades <br />steeper than 3H:1 V. This is why DMG questioned that these slope grades are steeper than 3H:1 V. <br />It is understood that the contours on the County GIS based map may not be accurate, and in these <br />cases, the data should be field verified and corrected on the map. Given that the portions of the <br />island slopes shown to be steeper than 3H:1 V are short in length and are shown at grades not <br />steeper than 2.5H:1 V, DMG will not require additional slope reduction on the island. Costs for <br />mobilizing a boat to allow for material transportation to the island, and costs for hand seeding, hand <br />mulching and hand raking of the top of island (above the slopes) will be included in the reclamation <br />cost estimate. <br />3. Please specify what the total depth of fill is (above and below water level. <br />4. Response acceptable. <br />5. DMG will add 250 feet to the 1325 feet of shoreline specified by United Companies as needing <br />reduced to 3H:1 V. This 250 feet accounts far the section of shoreline at the north end of the west <br />pit slope which the map contours indicate is steeper than 3H:1V. Field verification that this slope <br />section is at a grade of 3H:1 V or less will remove this cost from the reclamation cost estimate. <br />6. Demolition and disposal of the offices will be included in the reclamation cost estimate <br />