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<br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />STATION: S0709 <br /> <br />Field .. Date <br />Parameters os/25/9 07/15/9 <br />Flow Rate (cfs) 0.0001 0.0000 <br />Water Level <br />Tem rature C 11 <br />Conductivit (umhos/cm) 820 <br />pH 7.7 <br />Lab <br />Parameters <br />Alkalinity as CaCO3 mg(I <br />Bicarbonate as CaCO3 mg/I <br />Carbonate as CaCO3 (mglf) <br />Calcuim, dissolved mgA) <br />Chbride (mg/q <br />Conductivity @ 25 C° umhos/cm) <br />H <br />Hardness as CaCO3 m A <br />Magnesium, dissolved mg/I) <br />Sodium, dissolved m <br />Sulfate (mgA) <br />TDS Ratio ( rav,lcalc. <br />Solids, total dissoved mgA <br />Solids, total sus nded mgA) <br />• Monitoring of Spring 7-9 was permanently suspended effective 1994 (see TR-24). Spring 7-9 was found to lie outside the area of potential mining <br />Impacts. Spring 7-9 historically exhibits insignificant flows which do not warrant continued monitoring. <br />