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• • <br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONffORING DATA <br />STATION: S1013 <br />Field: Date <br />Parameters 08/14/9 09/11/9 10/23/9 <br />Flow Rate (cfs) 0.0007 0.0006 0.0005 <br />Water Level <br />Tem rature C°) 13 13 13 <br />Conductivi (umhos/cm 720 640 670 <br />H 8.4 8.4 8.5 <br />Lab.... <br />Parameters <br />Alkalini as CaCO3 m it 406 <br />Bicarbonate as CaCO3 mg/I) 386 <br />Carbonate as CaCO3 (mg/ 20 <br />Calcuim, dissolved mgA) 59 <br />Chbride (mg/I) 12 <br />ConductNi @ 25 C° umhos/cm) 951 <br />H 8.3 <br />Hardness as CaCO3 m A 258 <br />M nesium, dissolved mg/I) 27 <br />Sodium, dissolved m A 95 <br />Sulfate (mg/I) 123 <br />TDS Ratio (gravJcalc. 1.01 <br />Solids, total dissolved mgA 574 <br />Solids, total su nded mgA 22 <br />SAR in Water 2.60 <br />• Required monitoring frequency for Spring 10-13 became effective August 1993 (see PR-03). Required monitoring Irequency for Spring 10-13 eflectN6 <br />1994 (see TR-24) is quarterly for flows and field parameters; annual water quality sample. <br />