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PROPOSED EXISTING SURFACE MINING OPERATION <br /> r <br /> 12. Proposed start date of operation: commence Phase II approx- <br /> i imately January 1, 1995 (currently mining in Phase I) <br />' Estimated life of operation: 20-25 years <br /> Duration of first phase: each of phases I through V, <br /> is approximately 5 years <br /> 13. operation will be: continuous <br /> 14. Operation will be: 500, 000 - 1, 000,000 tons per year <br /> 15. Total <br /> anticipated production: <br /> P <br /> Mineral commodities to be removed: 25 million tons of <br /> sand and gravel <br /> Waste retained on-site: 15`s <br /> Waste disposed off-site: none <br /> Maximum anticipated depth: 40 ' maximum <br /> average depth 25 feet <br /> 16. Mining Method: Open sand and gravel pit. Sand and gravel <br /> are removed from the pit and taken to the processing plant <br /> via conveyor belt. Exhibit 3 shows the excavation boundary <br /> of the quarry. Exhibit 4 shows locations for cross-sections <br /> shown in Exhibit 5. <br /> 17. If processing of mined materials is to be conducted at or <br /> adjacent to the site, describe briefly the nature of the <br /> r processing and explain disposal method of tailings or 'waste <br /> from processing: <br /> At the processing plant, the gravel travels .over a washing <br /> screen. The sand is washed and separated from the rock at <br /> this point. The sand and water slurry flows over a gold <br /> r refel which will settle out the gold flakes on a carpet. The <br /> water will be separated from the sand and recycled back to <br /> the settling ponds. The sand will be stockpiled. <br /> r The rock flows through a large rotating drum which will scrub <br /> the dirt off of the rocks. The rocks flow over a screen <br /> which will separate all sizes larger than 1z inches in dia- <br /> 5 meter. They will be conveyed to a pair of cone crushers <br />� which will reduce the size of the rock. The crushed rock is <br /> conveyed to vibrating screens which separate the rock accord- <br /> ing to its diameter. The rock will then be conveyed to a <br /> series of stockpiles according to size as a finished product <br /> for asphalt or road base. The rocks that are smaller than 1k <br /> inches in diameter will be conveyed to another vibrating <br /> screen which will rewash and separate the rocks into variable <br /> sizes. They will then be conveyed into a series of stock- <br /> piles of finished product. The finished products are put <br /> into trucks by a wheel loader and sold according to weight. <br /> r KRC Aggregate, Inc. <br /> 4 - April 1, 1994 <br />