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Annual Aology Report <br />Twentymile Coal Company <br />Report run on: February 23, 200712:12 PA Page 1 <br />Project: 2000 Foidel Creek Mine Station: 068274C 006-82-74C Classification: WELL <br />Category Parameter Analysis Type Average Std Dev Max Min Count Units Begin End <br />ANIONS BICARBONATE AS HC03 168.90 161.31 530.00 7.00 35 MG/L 05/87 05/06 <br />CARBONATE AS C03 8.98 38.21 190.00 -2.00 25 MG/L 05/87 04/05 <br />HYDROXIDE AS OH -2.00 0.00 -2.00 -2.00 10 MG/L 05/95 09/99 <br />SULFATE NOT APPLICABLE 1751.64 673.60 2552.00 43.00 36 MG/L 05/87 05/06 <br />CATIONS CALCIUM DISSOLVED 243.74 143.31 447.00 1.00 36 MG/L 05/87 05/06 <br />MAGNESIUM DISSOLVED 190.13 102.74 318.00 0.32 36 MG/L 05/87 05/06 <br />SAR NOT APPLICABLE 4.10 3.85 19.00 1.54 25 UNDEFINED 05/87 09/99 <br />SODIUM DISSOLVED 283.58 97.55 566.00 92.00 36 MG/L 05/87 05/06 <br />MEASURED PROPERTIES FLOW RATE FIELD 0 CFS 05/97 05/97 <br />WATER LEVEL FIELD 6841.44 25.31 6920.71 6809.66 15 FEET (MSL) 01/83 09/91 <br />WATER LEVEL READING FIELD 0 FEET 05/97 05/97 <br />NUTRIENTS NITROGEN AMMIA-FREE 0.01 0.00 0.01 0.01 1 MG/L 12/87 12/87 <br />AMMIUM-TOTAL 2.19 0.00 2.19 2.19 1 MG/L 12/87 12/87 <br />NITRATE 0.00 0.03 0.13 -0.03 35 MG/L 05/87 04/05 <br />NITRITE -0.01 0.01 0.02 -0.02 20 MG/L 05/95 04/05 <br />N03+NO2 0.00 0.04 0.14 -0.02 36 MG/L 05/87 05/06 <br />PHOSPHATE ORTHO-DISS 0.02 0.13 0.79 -0.02 35 MG/L 05/87 04/05 <br />PHYSICAL PROPERTIES ALKALINITY TOTAL 149.50 133.95 370.00 6.00 26 MG/L 05/87 05/06 <br />CONDUCTIVITY FIELD 2959.91 639.16 3940.00 947.00 32 UMHOS/CM 05/87 04/03 <br />LAB 3048.08 644.27 3900.00 1150.00 36 UMHOS/CM 05/87 05/06 <br />HARDNESS AS CAC03 1446.90 729.52 2371.00 6.60 25 MG/L 05/87 09/99 <br />PH FIELD 7.93 0.71 9.33 6.77 33 PH 05/87 04/04 <br />LAB 7.72 0.93 9.20 5.90 16 PH 05/97 05/06 <br />SOLIDS TOTAL-DISS 2779.50 857.42 3900.00 618.00 36 MG/L 05/87 05/06 <br />TEMPERATURE FIELD 11.33 2.25 16.00 8.00 32 DEGREES C 05/87 04/03 <br />PRIMARY CADMIUM DISSOLVED -0.85 1.50 0.50 -5.00 34 UG/L 05/87 04/05 <br />LEAD DISSOLVED -28.57 52.98 100.00 -200.00 35 UG/L 05/87 04/05 <br />MERCURY DISSOLVED -0.15 0.08 0.10 -0.20 35 UG/L 05/87 04/05 <br />SELENIUM DISSOLVED 7627.49 45131.43 ***'***** -10.00 35 UG/L 05/87 04/05 <br />SECONDARY IRON DISSOLVED 2524.26 7375.61 31200.00 -100.00 35 UG/L 05/87 04/05 <br />TOTAL RECOV 2940.00 0.00 2940.00 2940.00 1 UG/L 10/93 10/93 <br />MANGANESE DISSOLVED 486.47 356.39 1390.00 -10.00 36 UG/L 05/87 05/06 <br />TRACE METALS BORON DISSOLVED 416.67 281.48 680.00 120.00 3 UG/L 04/04 05/06 <br />MOLYBDENUM DISSOLVED -32.57 25.36 20.00 -100.00 35 UG/L 05/87 04/05 <br />';?A