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pumps can be employed, as needed, to evacuate the accumulated runoff water in <br />Sediment Pond 2 back to the Dugout Pond, within a maximum time frame of 72 <br />hours, thus meeting a reasonable evacuation time period for Sediment Pond 2 <br />dewatering. In this manner, CEC can maintain a continued lowered pond level in <br />Sediment Pond 2 during prolonged periods of excess rainfall and runoff at the site <br />(similar to what was experienced during the Spring of 1995). CEC did have <br />occasion to follow this plan during a rainfall event in late April and early May <br />1999. The system functioned as designed. <br />Except for surface water accumulation from "recent" rainfall events, the practice of <br />encouraging standing water to "pond" in the former mining pits (now confined to <br />the ash disposal B-Pit) has been eliminated. Deep eolian sand deposits (some as <br />much as thirty feet thick) exist across the remainder of the mine site. The sand's <br />high infiltration characteristic contributes to a significant loss of surface moisture, <br />due to the "deep percolation" of rainfall during most storm events. The result is <br />that normally only minimal runoff is experienced. As additional portions of the <br />Permit site are reclaimed, (topsanded and seeded) less and less runoff has been <br />observed. <br /> <br />u <br />AHR-2004 -83- <br />