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Table 7 -Comparison of EC values at monitoring wells downstream from AV Fs: <br />Recent observed values vs. material damage suspect values <br /> Surface water electroconductivity Alluvial water electroconduclivity <br /> (micromhos/cm) (micromhos/cm) <br />Alluvial valley Material Observed Material Observed <br />Ooor damage maximum, 1998 - damage maximum, 1998- <br /> suspect 2001 suspect 2000 <br /> level level <br /> No data. Surface <br /> water quality <br />Upper Middle 1500 980 3000 indicates no <br />Creek material damage to <br /> alluvial water. <br />Foidel <br />Creek/Middle 1500 2610 (no more than 3000 1920 <br />Creek pre-mining) <br />confluence <br /> No data. Surface <br /> water quality <br />Trout Creek 1500 660 3000 indicates no <br /> material damage [o <br /> alluvial water. <br />Division's finding that CYCC has protected hydrologic balance. Based on the foregoing <br />observations regarding hydrologic impacts, the Division finds that CYCC has minimized disturbance <br />of the hydrologic balance in the mine plan and adjacent areas and prevented material damage outside <br />the permit area. <br />Division's finding that CYCC has not caused hydrologic changes that adversely affect the post- <br />mining land use in the permit area. Based on the foregoing observations regarding hydrologic <br />impacts, the Division finds that CYCC has not caused hydrologic changes that adversely affect the <br />approved post-mining land use in the permit area. <br />Division's finding that CYCC has protected AVFs. Based on the foregoing observations <br />regarding AVFs, the Division finds that CYCC has preserved the essential hydrologic functions of <br />AFVs not within the permit area. The essential hydrologic functions have been preserved by <br />maintaining the geologic, hydrologic, and biologic characteristics that support those functions. <br />Mine 1 and the Eckman Park Mine Page 13 January 3, 2002 <br />Phase III Bond Release <br />