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TABLE 15A <br />CYPRUS YAMPA VALLEY COAL CORP <br />SUMMARY OF HATER QUALITY DATA <br />STATION NUMBER: 265P2 --- 026-SP-2 <br />Average Std Meximun Minimm <br />PXYSICAL PROPERTIES <br />Units Count Period <br />TEMPERATURE FIELD 10.566 2.5 17.000 5.000 DEGREES C 58 O1/85 - 08/96 <br />CONDUCTIVITY FIELD 2834.915 575.6 3960.000 1720.000 UMXOS/CM 59 01/85 - 08/96 <br /> LAB 3178.421 302.4 3690.000 2680.000 UMHOS/CM 19 05/87 - 04/96 <br />PH FIELD 6.903 0.5 9.800 6.400 PH 57 02/85 - 08/96 <br />ALKALINITY TOTAL 647.450 58.7 750.000 550.000 MG/L 20 07/86 - 04/96 <br />HARDNESS TOTAL 2159.500 460.6 3046.000 7095.000 MG/L 28 07/85 - 04/96 <br />SOLIDS DISSOLVED 2922.500 434.3 3790.000 7950.000 MG/L 30 01/85 - 04/96 <br /> SUSPENDED 8.000 0.0 8.000 8.000 MG/L 7 77/94 - 77/94 <br />CATIONS <br />CALCIUM DISSOLVED 482.939 136.9 730.000 46.000 MG/L 33 01/85 - 04/96 <br />MAGNESIUM DISSOLVED 231.606 63.2 361.000 80.000 MG/L 33 01/85 - 04/96 <br />SODIUM DISSOLVED 48.279 32.7 174.000 23.000 MC/L 33 01/85 - 04/96 <br />SAR NOT APPLICABLE 0.397 0.1 0.530 0.281 UNDEFINED 8 06/92 - 04/96 <br />ANIONS <br />BICARBONATE AS HC03 629.952 234.1 900.000 239.000 MG/L 33 Ot/85 - 04/96 <br />CARBONATE AS C03 -0.889 1.1 0.000 -2.000 NG/L 9 09/91 - 04/96 <br />HYDROXIDE AS OH -1.600 0.9 0.000 -2.000 MG/L 5 06/93 - 04/96 <br />CHLORIDE NOT APPLICABLE 74.385 4.3 20.000 5.000 MG/L 13 01/85 - 01/87 <br />SULFATE NOi APPLICABLE 7458.758 534.5 2243.000 330.000 MG/L 33 01/85 - 04/96 <br /> <br />Report Dete: 21-MAR-97 Page: 1 of 3 <br />Report Name: NDA020R <br />