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i <br /> l <br /> Page 2 <br /> layout of the contaminated material stockpiles and the <br /> plants relative to the property lines. <br /> SITE HISTORY: In June of 1987, a 5,000 gallon gasoline tank <br /> and a 10, 000 gallon diesel tank were removed. In June of <br /> 1988, a 500 gallon waste oil tank was removed. <br /> In April and July 1991, excavation was performed to <br /> remove all potentially contaminated material and the spoil <br /> was stockpiled adjacent to the excavation. The excavation <br /> was subsequentially backfilled. The stockpile from the <br /> removal of the waste oil tank contains approximately 800 CY <br /> and the stockpile from the removal of the gasoline and <br /> diesel tanks contains approximately 1,200 CY. <br /> PROPOSED DISPOSAL: The Claude C. Wood Co. proposes that the <br /> contaminated material be processed by screening and crushing <br /> into aggregate baserock. Details of the plan are as <br /> follows: <br /> 1. The material will be transferred to the on site <br /> aggregate base plant approximately 1000 ft. by trucks or a <br /> front end loader. The two stockpiles will be combined to <br /> form one pile near the dozer trap feeder at the aggregate <br /> base plant. No other material will be combined with the <br /> contaminated material to be processed. The stockpile area <br /> at the dozer feed trap is hard and level gravel which will <br /> insure that all material will be picked up and processed <br /> thru the plant. <br /> 2 . The material, which consists of sand and rock, will <br /> be processed thru the aggregate base plant. (See Plate IV) <br /> This is a dry process with water only being used as a spray <br /> to control dust. The sand is separated from the rock at the <br /> 6x16 screen. The sand then travels via a conveyor out <br /> toward a stockpile. The rock is sent thru the crusher and <br /> over the 5x16 screen. The rock is crushed down to a maximum <br /> size of 3/411 . The 5x16 screen discharges material onto <br /> conveyors which transport material back onto the sand <br /> conveyor belt. The material is combined and discharged into <br /> the aggregate base stockpile. The aggregate base plant is a <br /> closed loop system, ie. all material going into the plant is <br /> discharged into the product stockpile. There is no waste. <br /> 3 . The baserock produced will be kept separate from <br /> the existing stockpile of aggregate base. The material will <br /> then be transferred into a separate stockpile near the <br /> uncontaminated material. The area where the potentially <br /> contaminated material had been discharged from the aggregate <br />