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~ ~ a <br />CYPRUS ORCHARD VALLEY COAL CORPORATION <br />1993 ANNUAL HYDROLOGY REPORT <br />HYDROLOGY MONITORING DATA <br />STATION: S3100 <br />Field Date <br />Parameters 01/29/9 03/02/9 04/30/93 OS/27/9 06/27/9 07/10/9 OB/13/9 09/11/9 10/06 10/ 10/30 <br />Flow Rate (cts) 0.0053 0.0036 0.0276 0.0267 0.0134 0,0100 0.0105 0.0105 0.0120 0.0109 0.0100 <br />Water Level <br />Tem rature C 6 9 8 9 11 12 11 10 <br />ConducCni umhos/cnt 450 320 470 430 410 530 420 540 <br />H 7.9 8.4 7.4 7.5 7.4 7.5 7.5 7.6 <br />Lab <<.;:' <br />Parameters <br />Alkalin' as CaC03 m I 316 198 336 <br />Bicarbonate as CaC03 m /I 316 198 336 <br />Carbonate as CaC03 m 0 0 0 <br />Calcuim, dissolved m /1 79 39 72 <br />Chbride (mg/I) 13 5 13 <br />Conductni p 25 C° umhos/cm 904 393 872 <br />H 7.3 7.4 7.8 <br />Hardness as CaC03 m 296 147 2T4 <br />M nesium, dissolved m I 24 12 23 <br />Sodium, dissolved m 83 47 81 <br />Sulfate (mgp) 165 66 138 <br />TDS Ratio ravJcalc. 0.85 0.93 <br />Solids, total dissolved m A 498 246 492 <br />SAR in Water 2.12 1.71 <br />• Required monitoring Irequency for Spring 31 effective 1994 (see TR-24) is mouthy for flows and field parameters; quarterly water quality samples. <br />