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it is the most significant monitoring site with respect to showing the cumulative effects <br />• of mining in this area. Review of the hydrograph of monthly flow measurements again shows <br />for this year lower than normal flows. <br />water et this site is a MgCa-504 type. Table 17 shows that the 1994 average TDS value of <br />2285 mg/l fall within the historic range. <br />Borings. <br />Springs #1, 2 and 3. These springs aLL exist close to the north permit boundary. Review <br />of Table 18 shows Spring #1 was not fLowi ng during its May, 1994 visit. During 1994, <br />Spring #2 exhibited a CaNg-504RC03 type water and a TDS value of 1214 mg/l. Due to their <br />location, it is unlikely that either spring is impacted by mining. The last time that <br />flow was noted at Spring #3 was in 1984. <br />Spring #5. This spring is located in the Cow Camp Creek drainage but, due to its <br />location, is unlikely to be disturbed by mining. Flow was too low (0.23 gpm) in Nay, 1994 <br />to warrant a lab sample; however, an electrical conductivity (EC) of 8170 umho/cm was <br />. measurable. This high EC value can be attributed to localized geochemical conditions and <br />not to mining impecis. <br />Spoil Springs #1 and 2. Both these spoils springs are located above the NPDES 004 pond. <br />Spoils Spring #1 is a large spring that flaws directly into the pond, and Spoils Spring #2 <br />is a small spring creek in reclaimed lend that flows adjacent to Spoils Spring #1. <br />Pater quality and hydrograph data for Spoils PSprinp~d#1 ,may be found in Appendix E. Review <br />of this hydrograph shows that, since 1988, only 1992 exhibited Lower flows. In 1994, this <br />spring displays a MgCa-504 type water (Table 18). TD,9:.yalues~.h ave.-;been>, incr.easing since <br />nth i_s spr~i ng began f Loii.i~ng .''This is due primarily to an ever ,increasing ~rechecge area of ~. <br />upgradient spoils material 'as mining progresses. <br />For Spoil spring-.#2 GaLong with ell other spoil springs), a statistical summary for all <br />data from 1990 on is provided along with this year's data in Appendix E. I~l;Xay, 1994 <br />its sample displayed EC of 4660 umho/cm, .the highest on record. , <br /> <br />15 <br />