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CHIMNEI' ROCK COAL <br />HYDROLOGIC INVESTIGATIONS <br />Physical and Chemical Parameters (Mg/L) <br />7/28/81 - Month 10 <br />Station Hardness (CaC03) TDS TSS Carbonate Chloride Fluoride <br />S-1 X X Y. X ,. X <br />S-2 513 747 12.8 .6 25 1.18 <br />W-1 X X X X }: X <br />W-2 68.4 467 22.8 2.4 25 .60 <br />W-3 Lost to Mine Expa nsion <br />W-5 581.4 496 344 <.5 25 1.2 <br />W-7 624.15 834 1 <.5 37.5 1.17 <br />W-8 461.7 704 1 <.5 37.5 1.18 <br /> Nitrogen <br />Station NE13 N03 N02 Su lfate Sulfide HC03 HP04 <br />S-1 X X X X X X X <br />S-2 .96 c.01 ~ .O1 255 < 0.01 243 <.1 <br />W-1 X X X X X X X <br />W-2 1.08 <.Ol x.01 7 .O1 395 .8 <br />W-3 Lost to Mine Expa nsion <br />W-5 4.2 0.31 G.2 250 0.01 360 <.1 <br />W-7 .96 .32 ~.2 255 ~ 0.01 245 <.1 <br />W-8. .72 .21 [.2 250 < 0.01 260 .4 <br />X = Dry <br />