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1,"X111131'1' "C" <br /> 6.4.7 Water Information: <br /> (1) Impact toground water: <br /> We do not anticipate significant impacts to groundwater. The immediately underlying <br /> material is eolian sands with decomposed bedrock in some places. There may be a <br /> connection to the underlying ground water system. However,this is a sand and gravel <br /> operation and does not expose or produce any toxic or acid producing materials. Fuel <br /> tanks and other toxic materials are all contained. Any spills will be cleaned and taken <br /> care of properly. If fuel or oil spills occur on site in reportable quantities,they will be <br /> cleaned up. Based on EPA guidance document,an SPCC plan is not required for this <br /> operation. <br /> (2)(a) If the operation is expected to directly affect surface or ground water <br /> systems,then locatewater structures facilities,etc.on Exhibit"C": <br /> No affects to ground or surface water have occurred with the existing 112 operation and <br /> none are expected for the amended 112 permit. <br /> (h) Identify all known aquifers: <br /> No aquifers are known. No borings or wells exist in the vicinity of the operation to <br /> provide information on any aquifers. <br /> (c) Provide a plan showing bow water from de-watering operations or from <br /> runoff from disturbed areas,stockpiles,and operating surfaceswill be managed to <br /> protect against pollution of surface and ground water,both during and after <br /> operations: <br /> There are no dewatering operations associated with this operation. Runoff from <br /> stockpiles will be controlled through seeding topsoil stockpiles. Straw bales or other <br /> suitable erosion control measure will be placed along the toe of topsoil stockpiles to <br /> control sediment until grass is established on the stockpile. (Erosion control materials <br /> may have to be removed during soil placement into stockpiles and when the stockpile is <br /> being seeded.) Once the pile is seeded and the grasses become established]no significant <br /> erosion should occur and straw bales and other erosion control materials will not be <br /> needed. <br /> The 1%grade of the pit floor and its sandy nature will retard any runoff. Essentially, <br /> runoff will flow gradually toward the existing ephemeral drainage way which runs <br /> through theoperation. <br /> i <br />