2012-12-24_REVISION - M1991146 - Laserfiche WebLink

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Division of Reclamation, Mining & Safety Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 SAKO Gravel Pit, Permit No. M 1991 - 146, Amendment No. 1 We request the following amendments to the permit. All other sections of the current permit remain unchanged. Section 6.3.2 / Exhibit B / Site Description: The permitted area would expand to the south by 1.280 acres for a total of 9.958 acres. A wash plant, water pump, and recirculation- settling pond would be located in the north end of the permitted area. Section 6.3.3 / Exhibit C / Mining Plan: Add gravel washing operations. Water rights for this operation were acquired on 23 October 2012 in the District Court, Water Division 4 under Case Number 12CW36. See Enclosure (5). The material to be washed is estimated to be 10,000 tons annually. Wash water would be initially taken from the Uncompahgre River into a 70,000 -ft (1.61 acre -foot) recirculation- settling pond. The pond dimensions will be approximately 100 ft by 100 ft by 10 ft deep with a 2:1 inside slope (average depth 7 ft). The owner /operator will need to form a protective berm between the river and pond to mitigate damage to the pond and any gravel crushing or washing equipment. The pond will be lined with a 24 -mil (0.61 mm) liner designed for long -term, non - hazardous use. See Enclosure (2) for the manufacturer's specifications. Water from the pond will then be used to wash gravel product with the effluent from the wash plan returning to the pond for reuse. No soaps or chemicals will be used to wash product. The pond would be recharged as necessary from the river. Calculations for monthly water usage are shown in Enclosure (3). Section 6.3.4 / Exhibit D / Reclamation Plan: The settling pond liner shall be removed and the pond graded so as to blend in with the rest of the pit area reclamation plan in the existing permit. Section 6.3.6 / Exhibit F / List of Other Permits and Licenses Required: The Ouray County Special Use Permit for the proposed operation has already been approved with conditions. See Enclosure (4).