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Exhibit 42, Figures S8A and 58B. Plots of laboraton dissolved iron measurements for the Two ")-rout Creek <br />Sandstone wells are presented in Figures 58C and 58D and plots of field pH measurements are presented in Figures <br />58E and 58F. These plots of field conductivity, dissolved iron and pH measurements for the Two Trout Creek <br />Sandstone Wells do not indicate any [rend which could be indicative of water qualiq~ impacts related to mining. <br />Dissolved iron concentrations show considerable variation, which may be due to sampling and sample preparation. <br />lron and pH values are similar a[ the two wells. Conductivity levels in [he Okie Plazawell are somewhat higher than <br />the levels in 9 Mine well as would be expected since the Okie Plaza well is deeper and further from the outcrop. <br />The declines in the piezomettic levels in the Middle Sandstone observed in Figures 12 through 17, in Section 2.O1-7, <br />Hydrology ]nfoimation, are apparently related to dewatering and subsidence associated with Mines 5 and 6. The <br />• <br /> <br />~~33 <br />•,,, •1 ~ ~~, ,l <br />Midterm Response 2.05-40.1 ..-, ....~ .. - -- 7/30/01 <br />