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• Volumes of material are shown in Table D-1. The mining areas and stockpiles are shown on <br />Maps C-2 & C-3. <br />Table D-1 Mining Area Material Table <br />Mining Area Acreage Topsoil (C.Y.) Overburden (C.Y.) Gravel (tons) <br />Phase 1 12.6 20,328 101,640 777,208 <br />Phase 2 10.0 16,133 80,667 616,832 <br />Tota 1 22.6 36,461 182,307 1,394,040 <br />Note that the areas above only include mining areas, not areas along the perimeter. The <br />anticipated total disturbed area for the operation consists of approximately 27.675 acres. <br />Material will be stored on site for use by the county for projects. The north access road will be <br />used as the mining access through out the life of the mine. The south access road will be installed <br />after the mining of Phase 1 is completed and will be used exclusively for traffic related to the <br />industrial yard. Trucks used to haul mined material off site will only use the north access road. <br />Mining will be to a depth of 28' to stay above the water table. The gravel is expected to follow <br />the surface topography. <br />2. Mining Timetable <br />The following table (Table D-2) is a best estimate of the sequence of operations for the life of <br />the mine. It is based on mining and using an initial amount of 100,000 tons per year for the first <br />portion of the pit life and 20,000 tons per year for the second portion. <br />• <br />LaSalle Pit, April 09 D-3