Laserfiche WebLink
• • <br /> ' <br /> EXHIBIT D (Cont <br />d) <br /> <br /> Overburden varies from about 2 feet to approximately 16 feet <br />i from west to east across the property. Average thickness is a <br /> meaningless figure because lateral varia tions are sudden and very <br />' <br /> severe. <br />' The soils consist of clayey silt with sand and rock. They <br /> are so poor in nutrients that vegetation is severely restricted <br />' (see Exhibit I /J) <br />Thick ness of these soils varies from zero to <br /> . <br /> approximately six inches, averaging approximately four inches. <br />' <br /> After the overburden is removed, mining is started from each <br />' of the four clay zones. The material is removed by dozer. It is <br /> then loaded onto a truck by a front-end loader. Other equipment <br />' used in the pit and stockpile areas includes, but is not limited to, <br /> a scraper, a Koleman screen, a grizzly and seater pumps. <br /> <br /> After the various clays are brought out of t he pit, they are <br />' screened to remove material that is too large. The clays are then <br />stored in segregated piles. when the off-site brick plant calls for <br />' various amounts of each clay, it can be loaded out quickly. <br />Since mining progresses down the dip of the clay beds and <br />' north and south along the strike (see map Exhibit D-1 and Sketches 1 <br />' and 2), the floor of the pit is always clay (a relatively impermeable <br />material). As a result, rainwater and rain runoff water will not <br />' drain out of the pit and must be pumped to another location inside <br />the pit so that it may evaporate. No aquifer is penetrated by this <br />' operation. The operator does not expect any disturbance to tl~e <br />' prevailing hydrologic balance of the affected land. There is no <br />water used in the mining or processing operations. <br />9 <br />