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• • <br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONRORING DATA <br />STATION: SP1900 <br />Field Date <br />Parameters 06/24/9 07/17/9 OB/13/9 <br />Flow Rate (cis) 0.0000 0.0000 0.0000 <br />Water Level 7181u11 3/4 full 1/2 full <br />Tem rature (C <br />Conductivi umhos/cm <br />PH <br />Lab.... <br />Parameters <br />Alkalini as CaC03 m /I <br />Bicazbonate as CaC03 JI <br />Carbonate as CaC03 m / <br />Calcuim, dissolved m A <br />Chbride (mg/I) <br />ConductNi @ 25 C° (umhos(cm) <br />H <br />Hardiess as CaC03 mgA <br />M nesium, dissolved m /I <br />Sodium, dissolved m A <br />Sulfate (mgA) <br />TDS Ratio (grav./calc. <br />Solids, total dissolved m A <br />Solids, total suspended (mgA) <br />* Monitoring of Spring & Pond 19 was temporarily suspended effective 1994 (see TR-24). Spring & Pond 19 lies north of an area of the East mine inactive <br />since 1984 and outside the subsidence zone. Monitoring of Spring 8 Pond 19 will be renewed 1 year prior to further development of the East mine with <br />quarterly flow, water level, and field parameter measurements and an annual water quality sample. <br />