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• Mined Land Reclama n Division ' Department of Natu~ Resources • Mr. Peter V. O'Connor June 11, 1985 Page 2 flowing in a draw. There also is a drainage draw at the southern edge of the existing quarry extending to the west. SJe will not be extending the quarry to the south so as to disturb this drainage. Mining will occur to a d~th of approximately 60 feet. Mining will occur on an approximate face of 1200 feet moving in the northerly direction in a series of benches. The overburden will be brought to the bottom of the quarry to create the benches, upon which we will crush, size and stockpile the high calcium limestone. Each bench would be approximately 160 feet wide. The Soil Conservation Service developed soils and vegetation data. The area is dominated by rock outcrops. [Je will salvage topsoil wherever it occurs at the southwest corner of the quarry area. The topsoil stockpiled with slopes 3H: 1V will be seeded so as to maintain quality if the pile remains more than one (1) growing season. Topsoil storage is noted 'Area A' on Exhibi[ C. A berm can be constructed along the easterly and southerly edge of the quarry so as to eliminate any rapid runoff of water from the quarry. Runoff will percolate through the berms so as to eliminate sediment load into nearby streams. The access road to the quarry site is an existing road that is also used by property owners to the north and west of our mining claim. There is an existing culvert under this roadway that is presently carrying the flow of caater. We will upgrade this roadway to 24 feet wide for a distance of approximately 2000 feet into the quarry. A larger and longer culvert will replace the existing culvert. Our anticipated blasting schedule would be possibly once a week. We would be using a non-electric blasting system employing Tovex and Anfo. We would anticipate blasting approximate 20-foot benches with a pattern about 7 feet X 9 feet, using 3 inch holes. A typical drilling pattern could be as shown below: Row 4 Row 3 Row 2 Row 1 Row 1 75 MS Caps Row 2 100 MS Caps Row 3 125 MS Caps Row 4 150 MS Caps [Je use the DuPont Al as ter's Handbook to determine maximum weight of explosives per delay that can be used. DuPont recommends a delay period of 8 milliseconds or more.