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Annual Ferology Report <br />Twentymile Coal Company <br />Report run on: February 23 <br />200712:17 PA <br /> , Page 1 <br />Project. 2000 Foidel Creek Mine Station: 06BR7 006-BRDH7 Classification: WELL <br />Category Parameter Analysis Type Average Std Dev Max Min Count Units Begin End <br />ANIONS BICARBONATE AS HC03 39120 29.93 430.80 367.20 5 MG/L 12/87 04/98 <br /> CARBONATE AS C03 24.28 6.34 32.00 17.00 5 MG/L 12/87 04/98 <br /> HYDROXIDE AS OH -2.00 0.00 -2.00 -2.00 4 MG/L 05/95 04/98 <br /> SULFATE NOT APPLICABLE 75.80 22.76 100.00 50.00 5 MG/L 12/87 04/98 <br />CATIONS CALCIUM DISSOLVED 1.58 2.20 3.70 -2.00 5 MG/L 12/87 04/98 <br /> MAGNESIUM DISSOLVED -0.22 1.24 1.00 -2.00 5 MG/L 12/87 04/98 <br /> SAR NOT APPLICABLE 29.70 19.49 50.22 -0.03 5 UNDEFINED 12/87 04/98 <br /> SODIUM DISSOLVED 200.60 12.40 214.00 186.00 5 MG/L 12/87 04/98 <br />MEASURED PROPERTIES WATER LEVEL FIELD 6842.22 3.85 6851.78 6840.00 19 FEET (MSL) 03/83 09/89 <br />NUTRIENTS NITROGEN AMMIA-FREE 0.06 0.00 0.06 0.06 1 MG/L 12/87 12/87 <br /> AMMIUM-TOTAL 0.65 0.00 0.65 0.65 1 MG/L 12/87 12/87 <br /> NITRATE 0.02 0.05 0.10 -0.02 5 MG/L 12/87 04/98 <br /> NITRITE -0.01 0.00 -0.01 -0.01 4 MG/L 05/95 04/98 <br /> N03+NO2 0.02 0.05 0.10 -0.02 5 MG/L 12/87 04/98 <br /> PHOSPHATE ORTHO-DISS 0.05 0.02 0.08 0.02 5 MG/L 12/87 04/98 <br />PHYSICAL PROPERTIES ALKALINITY TOTAL 363.60 32.10 400.00 331.00 5 MG/L 12/87 04/98 <br /> CONDUCTIVITY FIELD 803.62 105.12 1021.00 610.00 29 UMHOS/CM 01/87 04/03 <br /> LAB 798.60 50.96 855.00 722.00 5 UMHOS/CM 12/87 04/98 <br /> HARDNESS AS CAC03 5.40 5.18 13.00 -1.00 5 MG/L 12/87 04/98 <br /> PH FIELD 8.96 0.38 9.70 7.70 29 PH 01/87 04/03 <br /> LAB 8.60 0.00 8.60 8.60 1 PH 04/98 04/98 <br /> SOLIDS TOTAL-DISS 488.00 38.34 540.00 440.00 5 MG/L 12/87 04/98 <br /> TEMPERATURE FIELD 12.16 3.79 19.00 4.00 29 DEGREES C 01/87 04/03 <br />PRIMARY CADMIUM DISSOLVED -0.38 0.27 0.10 -0.50 5 UG/L 12/87 04/98 <br /> LEAD DISSOLVED -44.00 90.99 40.00 -200.00 5 UG/L 12/87 04/98 <br /> MERCURY DISSOLVED -0.20 0.00 -0.20 -0.20 5 UG/L 12/87 04/98 <br /> SELENIUM DISSOLVED -1.00 0.00 -1.00 -1.00 5 UG/L 12/87 04/98 <br />SECONDARY IRON DISSOLVED 22.00 71.90 90.00 -100.00 5 UG/L 12/87 04/98 <br /> MANGANESE DISSOLVED -10.20 24.95 19.00 -50.00 5 UG/L 12/87 04/98 <br />TRACE METALS MOLYBDENUM DISSOLVED -36.00 39.75 -10 <br />00 -100 <br />00 5 UG/L <br /> . . 12/87 04/98 <br />7A