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Temporary Stockpile Seed Application Rate % in mix <br /> (#PLS/acre) <br /> Slender wheatgrass 2.8#PLS/ac 25 <br /> Smooth bromegrass 3.9#PLS/ac 30 <br /> Pubescent wheatgrass 4.2 #PLS/ac 30 <br /> Sand dropseed 0.03#PLS/ac 5 <br /> Crested wheatgrass 0.6#PLS/ac 10 <br /> Totals 11.53 #PLS/ac 100 <br /> *Application rate is for drilling the seed. If seed is to be broadcast, the application <br /> rate will be doubled. <br /> The seed mix for final reclamation as described above does not require fertilizer as <br /> recommended by the local NRCS office in Greeley, Colorado <br /> Water— General Requirement <br /> To minimize the effect on the prevailing hydrologic balance, the operator shall: <br /> a. Comply with all applicable Colorado water laws. <br /> b. Comply with all applicable Federal and State water quality laws and regulations. <br /> c. Comply with all Federal and State requirements for dredge and fill. <br /> d. Re-grade and backfill all sediment and siltation structures after mining is <br /> completed. <br /> Groundwater— Specific Requirements <br /> The operation will not affect groundwater quality on or off the site. The operation will <br /> comply with State groundwater quality standards. Due to the absence of sources of <br /> potential pollutants, groundwater quality monitoring is not required in this operation. <br /> The mining and reclamation will affect the groundwater table surrounding the mine site. <br /> Proposed mitigation efforts to minimize these impacts are a recharge pond along the <br /> southeast corner of the property to maintain groundwater levels during the mining, and <br /> a perimeter drain if needed to convey groundwater around the lined reservoir after the <br /> slurry wall is installed. <br /> The depth to groundwater has been measured on a monthly basis in piezometers <br /> located on the interior and exterior of the proposed slurry wall alignment since October <br /> 2006. Groundwater depths will continue to be measured and recorded at monthly <br /> intervals in each piezometer to establish what the seasonal groundwater levels are. <br /> These measurements will be used as a benchmark for maintaining the groundwater <br /> levels in subsequent years. The triggers that would require the perimeter drain to be <br /> installed are as follows: <br /> Derr Pit Project <br /> J&T Consulting, Inc. DRMS 112 Permit <br />