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remained predominately neutral. <br />The second possible impact on receiving waters is surface run-off from the reclamation areas. <br />The Revised Universal Soil Loss Equation calculations for Phase 2 bond release of these areas <br />(submittal SL-11) shows that erosion from these areas is less than pre-mine, and thus will not <br />increase the presence of sediment in surface water run-off. <br />Pond 007 handles all of the surface water runoff from the release areas. All records of <br />discharge from Pond 007 show that the pH has been maintained to be primarily neutral and all <br />discharges have been in compliance with the NPDES discharge permit. Additionally, surface <br />water sampling points SW-N108 and SW-N109 show the surface water quality upstream and <br />downstream respectively. This surface water data shows that the mine area has not affected the <br />receiving waters of Calamity Draw negatively. The surface water quality of the last two years <br />is attached in Appendix E. <br />The overall impacts to the receiving waters is either no change or improvement. <br />• <br />0 SL-12 DRAFT 20AUG10.wPd 43