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<br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />STATION: S2100 <br />• <br />Field Date <br />Parameters .. .. 07/17/9 <br />Flow Rate (cis) 0.0001 <br />Water Level <br />Tem rature (Cy 19 <br />ConductNit (umhos/cm 550 <br />H 7.8 <br />Lab . . <br />Parameters <br />Alkalini as CaC03 (mgil <br />Bicarbonate as CaC03 mg/I <br />Carbonate as CaC03 mg/ <br />Calcuim, dissolved mgA <br />Chbride (mg/I) <br />Conductivi @ 25 C° umhos/cm) <br />H <br />Hardness as CaC03 m <br />Ma nesium, dissolved m /I <br />Sodium, dissolved m A <br />Sulfate (mgA) <br />TDS Ratio (gravJcalc.) <br />Solids, total dissotved mgA <br />Solids, total su ended (mgA) <br />• Monitoring of Spring 21 was temporariy suspended effective 1994 (see TR-24). Spring 21 lies outside of the area of potential mine impacts given mine <br />development to date. Monitoring of Spring 21 will be renewed 1 year prior to lurther development of the East mine with quarterly 11ow, water level, and <br />field parameter measurements and an annual water quality sample. <br />