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i ' • • <br />' of mining is proposed for extraction operations at the site. Conceptually, <br />as the overburden is removed from a given area it will be placed directly <br />in the area which has been previously mined. After the overburden is removed <br />from an area, the gravel will be removed from that area until the water table <br />is encountered. At that time, either well points will be installed, or a <br />de-watering trench will be excavated around as mpch of that area as is <br />required to de-water that particular area. Essentially, the water table <br />' will be lowered by pumping only in the area(s) which is being mined and <br />' backfilled. A detailed discussion of the methods of disposal of that water <br />are described in a following section. <br />As the water table is lowered in an individual mining area, the gravel <br />which was formerly below the water table wi].1 be removed down to bedrock <br />or until the quality of the gravel deteriorates below acceptable standards, <br />1 whichever event occurs first. While the water table is still artificially <br />lowered in that individual mining area, the overburden from the next mining <br />' area will be placed in the de-watered area so that it can be properly placed <br />' and the moisture content controlled during placement. This method is <br />1 highly preferred to attempting to place the same material in a wet or pond <br />' area. De-watering will continue until the overburden has been filled to a <br />grade three feet above the normal water table, including an adequate thick- <br />' ness of top soil. <br />' The gravel materials mined at the site are intended for use as base courses <br />beneath pavements and as aggregate in asphaltic pavement and concrete and <br />' as fill material. Initially, the major portion of the aggregate mined from <br />the site will be used in the Geiserts' construction business,. Only enough <br />1 <br /> aggregate must be stockpiled to supply Geiserts' own construction projects <br /> and some smaller contract sales and therefore, smaller stockpiles can be <br />1 <br />