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CYPRUS YAMPA~LLEY COAL CORPORATION: MINE NO. 1, 2, AND ECKMAN PARK • • <br />1999 ANNUAL HYDROLOGIC REPORT <br />SUMMARY OF WATER QUALITY DATA <br />summery of water quality data-Il.brw <br /> Arerage Std. Maximum Minimum DnILS Count Begin End <br />1 PHYSICAL PROPERTIES TEMPERATURE FIELD 10.471 2.7 13.900 4.000 DEGREES C 17 12/91 08/99 <br />2 CONDUCTIVITY FIELD 3372.353 385.1 3960.000 2570.000 UMHOS/CM 17 12/91 08/99 <br />3 LAB 3254.286 555.2 3690.000 2160.000 UMHOS/CM 7 04/96 06/99 <br />4 PH FIELD 6.736 0.2 7 X50 6.290 PH 17 12/91 08/99 <br />5 LAB 6.880 0.4 7.600 6.600 PH 5 05/97 08/99 <br />6 ALKALINITY TOTAL 717.857 15 4 738.000 697.000 MG/L 7 03/96 08/99 <br />7 HARDNESS AS CACO3 2498.571 231.8 2800.000 2080.000 MG/L 7 04/96 08/99 <br />8 SOLIDS TOTAL-DISS 3458.571 276.6 3790.000 3090.000 A1G/L 7 03/96 06/99 <br />9 OIL&GREASE VISIBLE NOT APPLICABLE 2.000 0.0 2.000 2.000 UNDEFINED 2 12/91 02/92 <br />10 CATIONS CALCIUM DISSOLVED 496.000 41.6 543.000 434.000 MG/L 7 04/96 08/99 <br />ll MAGNESIUM DISSOLVED 306.000 33.5 353.000 242.000 MG/L 7 Od/96 08/99 <br />12 SODIUM DISSOLVED 36314 11.3 42.3W 10.900 MG/L 7 04/96 08/99 <br />13 SAR NOT APPLICABLE 0.354 0.0 0.400 0.330 UNDEFINED 7 04/96 08/99 <br />14 ANIONS BICARBONATE AS HCO3 875.714 18.5 900.000 851.000 MG/L 7 04/96 08/99 <br />15 CARBONATE AS CO3 2.000 0.0 -2.000 -2.000 MG/L 7 Od/96 08/99 <br />16 HYDROaIDE AS OH -2.000 0.0 -2.000 -2.000 MG/L 7 04/96 08/99 <br />17 SULFATE NOT APPLICABLE 1942.857 171.8 2140.000 1730.000 MG/L 7 04/96 08/99 <br />IS PRIMARY CADMIUM DISSOLVED -0.714 I.I 0.500 -3.000 UG/L 7 04/96 08/99 <br />l9 LEAD DISSOLVED -54.286 25.1 -40.000 -100.000 UG/L 7 04/96 08/99 <br />20 MERCURY DISSOLVED -0.071 03 0700 -0.200 UG/L 7 04/96 08/99 <br />2l SELENIUM DISSOLVED -0.714 0.8 1.000 -1.000 UG/L 7- 04/96 08/99 <br />22 SECONDARY IRON DISSOLVED 117.143 119.5 280.000 -50.000 UG/L 7 04/96 08/99 <br />23 MANGANESE DISSOLVED 2104.286 515.5 2700.000 1070.000 UG/L 7 04/96 08/99 <br />24 TRACE METALS MOLYBDENUM DISSOLVED -17.133 7.6 -10.000 30.000 UG/L 7 04/96 08/99 <br />25 NUTRIENTS NITROGEN AMMIA-FREE 0.033 0.0 -0.010 -0.050 MG/L 7 04/96 08/99 <br />26 AMMIUM-TOTAL 0.186 0.2 0.580 -0.010 MG/L 7 04/96 08/99 <br />27 NITRATE 0.430 0.9 2.480 -0.020 MG/L 7 04/96 08/99 <br />28 NITRITE 0.000 0.0 0.030 -0.010 MG/L 7 03/96 08/99 <br />29 NO3+NO2 0.437 0.9 2.510 -0.020 MG/L 7 04/96 08/99 <br />30 PHOSPHATE ORTHO-DISS -0.000 0.0 0.013 -0.005 MGR- 7 04/96 08/99 <br />TABLE ISA SITE: 026SP2 (026-SP-2, SPOIL) <br />