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• • <br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />STATION: S7010 <br />Fleld Date <br />Parameters 08/14/9 09/11/9 10/15/9 <br />Flow Rate (cfs) 0.0010 0.0001 0.0005 <br />Water Level <br />Tem rature C 13 12 12 <br />Conductivity umhos/cm 215 160 190 <br />H 7.8 7,8 7.6 <br />Lab <br />Parameters <br />Alkalini as CaC03 m /I 108 <br />Bicarbonate as CaC03 mg/I) 108 <br />Carbonate as CaC03 mg/ 0 <br />Calcuim, dissolved (mgA) 22 <br />Chbride (mg/I) 1 <br />Conductrvity @ 25 C° umhos/cm) 222 <br />H 7.2 <br />Hardness as CaC03 mgA 92 <br />Magnesium, dissolved mg/I) 9 <br />Sodium, dissolved mgA 5 <br />Sulfate (mgA) 14 <br />TDS Ratb gravJcalc. 1.03 <br />Solids, total dissolved mgA 120 <br />Solids, total su nded m A) 2 <br />SAR in Water 0.23 <br />` Required monitoring frequency for Spring 10-10 became effective August 1993 (see PR-03). Required monitoring Irequency for Spring 10-10 elfectNe <br />1994 (see TR-24) Is quarterly for flows and field parameters; annual water quality sample. <br />