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<br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />STATION: 50805 <br />• <br />Field Date <br />Parameters 06/25/9 07/15/9 <br />Flow Rate (cis) 0.0014 0.0002 <br />Water Level <br />Tem rature (C'~ 12 13 <br />Conductivity (umhos/cm) 790 630 <br />H 8.2 8.3 <br />Lab. <br />Parameters <br />Alkalini as CaC03 mg/I <br />Bicarbonate as CaC03 (mg/I) <br />Carbonate as CaC03 mg/f) <br />Cafcuim, dissolved mg/1) <br />Chloride (mg(I) <br />Conductivity @ 25 C° umhos/cm <br />H <br />Hardness as CaC03 (m ~) <br />Magnesium, dissolved (mg/I) <br />Sodium, dissoved mgA) <br />Sulfate (mgA) <br />TDS Rata rav./calc. <br />Solids, total dissolved m <br />Solids, total suspended (mgA) <br />* Monitoring of Spring 8-5 was temporarily suspended effective 1994 (see TR-24). Spring 8-5 ties outside of the area of potential mine impacts given <br />mine development to date. Monitoring of Spring 8-5 will be renewed 1 year prior to funher development of the East mine with quarterly Ilow and field <br />parameter measurements and an annual water quality sample. <br />