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~~ ~ . <br />TABLE 34A <br />CYPRUS YAMPA VALLEY COAL CORP <br />SUMMARY OF WATER QUALITY DATA <br />STATION NUMBER: 1860310 --- SPRING L-1 <br />Average Std Maximm Minimlm <br />PHYSICAL PROPERTIES <br />Units Count Period <br />TEMPERATURE FIELD 10.039 2.9 16.000 2.000 DEGREES C 44 OS/86 - 08/96 <br />CONDUCTIVITY FIELD 3238.467 334.4 3900.000 2150.000 UMHOS/CM 45 OS/86 - 08/96 <br /> LAB 3106.813 395.4 3820.000 2420.000 UMHOS/CM 16 05/87 - 06/96 <br />PH FIELD 6.882 0.3 7.700 6.300 PH 45 05/86 - 08/96 <br />ALKALINITY TOTAL 518.133 107.8 694.000 194.000 MG/L 15 05/87 - 06/96 <br />HARDNESS TOTAL 2425.000 385.9 3487.000 1956.000 MG/L 16 05/86 - 06/96 <br />SOLIDS DISSOLVED 3166.235 320.8 3820.000 2724.000 MC/L 17 05/86 - 06/96 <br /> SUSPENDED 7.125 8.1 32.000 -2.000 MG/L 16 05/86 - 06/96 <br />CATIONS <br />CALCIUM DISSOLVED 523.765 72.8 724.000 429.000 NG/L 17 OS/86 - 06/96 <br />MAGNESIUM DISSOLVED 274.765 49.0 409.000 215.000 MG/L 17 05/86 - 06/96 <br />SODIUM DISSOLVED 42.088 5.2 50.000 31.000 MG/L 16 05/86 - 06/96 <br />POTASSIUM DISSOLVED 7.000 0.0 7.000 7.000 MG/L 1 05/86 - OS/86 <br />SAR NOT APPLICABLE 0.358 0.0 0.394 0.320 UNDEFINED 3 05/93 - 06/96 <br />ANIONS <br />BICARBONATE AS HCO3 640.365 127.3 847.000 237.000 MG/L 17 05/86 - 06/96 <br />CARBONATE AB CO3 -1.333 1.2 0.000 -2.000 MG/L 3 05/93 - 06/96 <br />HYDROxIDE AS OH -2.000 0.0 -2.000 -2.000 MG/L 2 05/95 - 06/96 <br />CHLORIDE NOT APPLICABLE 8.000 0.0 8.000 8.000 MG/L 1 05/86 - 05/86 <br />SULFATE NOT APPLICABLE 1854.353 154.0 2136.000 1609.000 MG/L 17 05/86 - 06/96 <br />Report Date: 11-MAR-97 Page: 1 of 3 <br />Report Neme: WOA020R <br />