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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. These measurements will be used to establish what the seasonal groundwater <br /> levels were prior to the mining exposing groundwater, and as a benchmark for <br /> maintaining the groundwater levels in subsequent years. Groundwater depths will <br /> continue to be measured and recorded at monthly intervals in each piezometer and <br /> compared to the benchmark levels. The triggers that would require the perimeter drain <br /> to be installed are as follows: <br /> A three foot difference in the depth to groundwater from the benchmark seasonal <br /> groundwater levels in two or more piezometers for two consecutive months. <br /> Broken Arrow Investments, LLC proposes that the groundwater elevations be monitored <br /> through onsite wells before, during, and after the mining and reclamation is complete so <br /> that impacts to the groundwater table, from this mining operation, can be identified and <br /> addressed. It is the intent of Broken Arrow Investments, LLC to operate responsibly and <br /> to mitigate damages to wells that are directly attributable to the mining and reclamation <br /> of this site. For more specific information please refer to the well owner agreements and <br /> narrative included in Exhibit G. <br /> Reclamation —Approximate Time Table <br /> The proposed rate of production for the mine is 300,000 to 600,000 tons per year. The <br /> total time frame to mine every phase is approximately 12 to 24 years which allows for <br /> Derr Pit Project <br /> J&T Consulting, Inc. DRMS 112 Permit <br />