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s • <br />Mining Plan <br />page 2 <br />The first year production of limestone from this quarry is estimated to be 20.000 tons. As the mine <br />progresses to the east, newly disturbed topsoil and shale will be used to regrade and cover the slopes of the <br />past segment. In this way the exposed area can be kept under 5 acres, and preferably less than 2 acres <br />including the stockpiles. <br />The McKenna Limestone Quam, as described in the legal description Cor the mine site is a total of 8.7 <br />acres. There is .5 acres of previously disturbed area and approximately 1. I acres of new road surface to be <br />constructed. The total area of the mine and roads is slightly less than 10 acres. This qualifies this site for <br />a 1 IO limited operation permit. <br />Stock piles sizes will be kept to a minimum by hauling product o6'-site as it is produced and by <br />segmentally reclaiming as the quam progresses. The initial topsoil stock pile will be approximately 30 <br />feet wide by 200 feet long by 7 feet high, containing approximately 1500 cubic yards. Stockpiles sizes for <br />the sorted limestone will be van' depending upon the field conditions. The goal is to remove the material <br />from the site as i[ is produced. <br />There are no plans to have water for industrial use at this site. Drinking water will be transported to site <br />in individual containers. Sanitary facilities will be portable toilets. During operations, there nary be t-4 <br />workers at this site. <br />In order to comply with the Colorado Water laws and regulations, a Temporary Substitute Ground water <br />Supply Plan is required if water is used for industrial uses such as washing or dust control. There is no <br />requirement at this time since water use is not part of the plan. <br />Control of surface water at this site will be done using natural grades and features to advantage. A berm <br />will be left between quarry and Arroyo. This will eH'ectively separate the quarry area from the seasonal <br />flooding of the arroyo bottom. Stormwater and sediment from onsi[e will be contained within the berm. <br />The fine material collected can be used for agricultural purposes. The rnnswction of a new access road is <br />proposed to eliminate the existing road up the arroyo. This will minimize the disturbed area subject to <br />intermittent stormwater runoff. Where the road crosses the arroyo, the surface will be kept level with the <br />existing grade. This will allmv the water to flow across the arroyo freely at this location. <br />[n active areas of the quarry shall be left in a natural state until ready for use. Active area shall be kept to <br />[he minimum. This will minimize the erosion potential. The topsoil and overburden berms should be <br />tracked walked and seeded for vegetative stabilization. <br />While the Summitville Superfund site is the main destination for the limestone at this quarry during the <br />first season, there are several other potential uses. The limestone can be used for rip rap for erosion <br />control. Shale and waste rock can be used for fill. Fine Limestone can be used as an agricultural <br />supplement [o raise the pH in the soil. There may be additional uses and or potential markets not <br />currently anticipated. <br />