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• The current permit allows for United Companies to mine and reclaim the pit at 2H:1 V slopes, so <br />the same slopes will be used throughout the durafion of the mining. The exception to this is from <br />5' above level to 10' below level, which will be configured to a 3H:1 V slope. <br />The expected annual average production from the site is expected to be approximately 300,000 <br />tons per yeaz. The material will be crushed, screened and some may be washed on site and sold <br />in two product categories: road base and asphalt. A break down of the product tonnages and <br />mined tonnages can be seen in Table D-1. The total disturbed azea is 63.1 acres. A breakdown <br />of the estimated azeas is included in Table D-2. <br />Table D-1: Average Annual Product Distribution <br />Product Tons Sold % Reject Rate (Naturals) Tons Mined <br />Roa Base 250,000 % 250,000 <br />Asphalt 50,000 40% 83,333 <br />Total 300,000 7% 333,333 <br />All mining will take place without any water removal, thus negating any dischazge or change to <br />the water table. Since water will not be dischazged from the site and will remain onsite, an <br />NPDES permit will not be needed. <br />There will be evaporative losses which aze associated with mining in the Colona Pit, a Substitute <br />Water Supply Plan will be filed and approved by the Division of Water Resources prior to <br />muting deeper than 2 feet above the local static water table. Calculations within the Substitute <br />Water Supply Plan indicate that United Companies will be required to augment the water in <br />some of the months for the evaporations. An estimation of the mining consumptive uses and <br />evaporative depletions upon completion of mining can be seen in Exhibit G. <br />• <br />Colona Pit March 07 D-5 <br />