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<br />Please remove the reference to the Persigo wastewater treatment facility from page 8, <br />paragraph 5. <br />EXHIBIT G -Water Information <br />20. Response acceptable. <br />EXHIBIT J -Vegetation Information <br />21.Response acceptable. <br />EXHIBIT L -Reclamation Costs <br />22.The Division will calculate a reclamation cost estimate within the next few days and forward it <br />to you for review. The estimate will include dewatering costs for the pit. <br />EXHIBIT O -Proof of Notice to Soil Conservation District <br />23.Your response still indicates that the notice was delivered to the Mesa County Soil <br />Conservation Service. Please verify that this notice was actually received by the Mesa Soil <br />Conservation District. <br />EXHIBIT S -Permanent Man-made Structures <br />24.The Damage waiver agreement with Grand Valley Power was not signed by Martin Azcarraga. <br />Please re-submit a signed agreement. <br />The engineering demonstration is not adequate to demonstrate that the specified permanent <br />man-made structures will not be damaged by the mining operation. The engineering <br />demonstration must specify the maximum distance that a failure can occur at this site under <br />saturated conditions. Include a buffer zone around all structures, for which a damage waiver <br />agreement has not been submitted, that is adequate to ensure these structures will not be <br />damaged by the mining operation, should the potential maximum failure occur. <br />The Division is concerned about saline discharges to the Colorado River. However, the Colorado <br />Department of Public Health and Environment has jurisdiction over this matter. Please be sure <br />that the operation can feasibly discharge the groundwater exposed in the pit without exceeding <br />the discharge permit standards. <br />If you need additional information, please contact me at the Division of Minerals and Geology, <br />Durango Field Office, 701 Camino Del Rio, Room 125, Durango, Colorado 81301, telephone no. <br />970-247-5062. <br />Sincerely, <br />.~~~~/~ <br />Steve S. Shuey <br />Environmental Protection Specialist <br />