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Bear No. 3 Mine C- 1981 -033 <br />Water Quality Standards for the North Fork of the Gunnison River, Segment 2 <br />Analyte <br />Formula <br />Value <br />Chloride <br />250 mg /I <br />Sulfate <br />250 m /I <br />Arsenic <br />50 u /I <br />Cadmium <br />_ <br />=(1. 10167- (LN(B23) *0. 04184)) *EXP(0.7852 *(LN(B23) - 2.715)) <br />_ <br />3.5 u9/1 <br />Chromium <br />50 u /I <br />Cop <br />_ <br />= EXP(0.854 (LN( 1.7428) <br />7.6 ug /I <br />Iron <br />6000 u /I <br />Lead <br />_ <br />=(1. 46203- (LN(B23) *0. 145712)) *EXP( *LN - 4.705 <br />2.0 u /� — <br />_ <br />Man ganese <br />= EXP(0.3331 *(LN(B23) +5.8743 <br />31 ug /I <br />- <br />Nickel = EXP( 0.846 *LN( B23) +0.0554 _ _ <br />Selenium �— <br />44 ug/l <br />— <br />4.6 u /I <br />_ <br />Silver := EXP(1.72 *LN(B23)- 10.51) <br />0.05 u A <br />_ <br />Uranium _ <br />= EXP(1.10 *L N(B2 3) +2 _ _ <br />L — 1.20 mg/l <br />Zinc <br />= EXP(0_8473 *LN +0. 8699) _— <br />100 ug /I <br />_— <br />pH — -- <br />- - <br />6.5 -9.0 <br />Hardness Used' 82 — <br />m_g /I <br />— _ -- <br />No tes: All Standards from WQCC Regulation No. 3 <br />_ <br />Calculated Value (NS) — <br />Published Value <br />INPDES Permit Value <br />_ <br />jrs Page 1 4/19/2005 <br />