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r 6i? b <br /> Annua?(drolo gy Report <br /> <br /> Twentyr?ile Coal Company <br />Report run on: March 29 <br />2007 8:14 Ati <br /> , Page 1 <br />Project: 2003 Will iams Fork Mine Station: T4 TR-4 Classification: WELL <br />Category Parameter Analysis Type Average Std Dev Max Min Count Units Begin End <br />ANIONS BICARBONATE AS HCO3 228.75 113.60 584.00 34.16 27 MG/L 03/81 06/00 <br /> CARBONATE AS CAC03 10.00 16.97 22.00 -2.00 2 MG/L 06/96 06/98 <br /> AS CO3 20.00 44.88 168.00 -2.00 13 MG/L 09/82 06/00 <br /> CHLORIDE NOT APPLICABLE 2.44 2.98 15.00 -1.00 27 MG/L 03/81 06/00 <br /> HYDROXIDE AS CAC03 -2.00 0.00 -2.00 -2.00 2 MG/L 06/96 06/98 <br /> AS OH -1.00 1.15 0.00 -2.00 4 MG/L 06/92 06/99 <br /> SULFATE NOT APPLICABLE 26.52 34.59 140.00 -10.00 27 MG/L 03/81 06/00 <br />CATIONS CALCIUM DISSOLVED 8.61 22.18 100.00 2.00 19 MG/L 07/83 06/00 <br /> TOTAL RECOV 48.63 10.72 58.00 28.00 8 MG/L 03/81 12/82 <br /> MAGNESIUM DISSOLVED 18.48 12.26 51.30 1.00 19 MG/L 07/83 06/00 <br /> TOTAL RECOV 26.55 3.38 32.00 20.00 8 MG/L 03/81 12/82 <br /> POTASSIUM DISSOLVED 42.40 0.00 42.40 42.40 1 MG/L 07/83 07/83 <br /> TOTAL RECOV 2.14 0.27 2.50 1.70 8 MG/L 03/81 12/82 <br /> SAR NOT APPLICABLE 2.12 2.41 12.68 0.33 23 UNDEFINED 03/81 06/96 <br /> SODIUM DISSOLVED 38.58 13.68 88.00 16.30 19 MG/L 07/83 06/00 <br /> TOTAL RECOV 38.75 4.27 47.00 32.00 8 MG/L 03/81 12/82 <br />MEASURED PROPERTIES WATER LEVEL FIELD 6265.78 28.00 6294.52 6213.70 32 FEET (MSL) 03/84 10/91 <br />MINOR FLUORIDE NOT APPLICABLE 0.31 0.14 0.84 0.20 22 MG/L 03/81 06/94 <br />NUTRIENTS NITROGEN NITRATE 0.00 0.03 0.07 -0.02 18 MG/L 03/85 06/00 <br /> NITRITE -0.01 0.00 -0.01 -0.02 7 MG/L 09/86 06/99 <br /> N03+NO2 0.01 0.03 0.08 -0.02 21 MG/L 03/81 06/99 <br />PHYSICAL PROPERTIES ACIDITY AS CAC03 0.00 0.00 0.00 0.00 1 MG/L 03/85 03/85 <br /> ALKALINITY TOTAL 220.91 76.70 479.00 117.00 23 MG/L 03/81 06/00 <br /> CONDUCTIVITY FIELD 397.84 178.11 1040.00 180.00 83 UMHOS/CM 01/82 06/01 <br /> LAB 404.63 166.15 864.00 180.00 27 UMHOS/CM 03/81 06/00 <br /> HARDNESS AS CAC03 173.78 105.92 461.00 9.00 18 MG/L 03/81 06/96 <br /> OIL&GREASE VISIBLE NOT APPLICABLE 2.00 0.00 2.00 2.00 10 UNDEFINED 03/93 12/96 <br /> PH FIELD 8.52 0.54 9.50 .6.97 83 PH 01/82 06/01 <br /> LAB 8.42 0.68 10.30 6.90 27 PH 03/81 06/00 <br /> SOLIDS SUSPENDED 14.50 21.92 30.00 -1.00 2 MG/L 03/81 03/85 <br /> TOTAL-DISS 246.32 94.43 410.00 115.00 22 MG/L 03/81 06/94 <br /> TEMPERATURE FIELD 11.66 3.18 26.50 4.50 79 DEGREES C 05/82 06/01 <br />PRIMARY ARSENIC DISSOLVED -2.74 9.22 7.00 -40.00 19 UG/L 07/83 06/00 <br /> TOTAL RECOV 0.63 2.77 6.00 -2.00 8 UG/L 03/81 12/82 <br /> BARIUM DISSOLVED -200.00 0.00 -200.00 -200.00 1 UG/L 07/83 07/83