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-° Annua ?drology Report <br />O <br />l 1-g 1;i4 <br /> <br /> <br />Report ru Twel <br />e Coal Company <br />i <br />on: March 2 9, 2007 8:19 Ah <br /> Page <br />Project: 2003 Wil liams Fork Mine Station: 259 <br /> 259 Classifications WELL <br />Category Parameter Analysis T Type <br />yP <br />Average <br />Std Dev <br />ANIONS <br />BICARBONATE <br />AS HC03 Max Min Count Units Begin Ent <br /> <br />CARBONATE <br />AS CAC03 202.34 102.70 298.90 24.00 24 MG/L <br />03/81 <br />O6/0 <br /> <br />AS C03 2.00 0.00 2.00 2.00. 1 MG/L - 11/96 11/9, <br /> <br />CHLORIDE <br />NOT APPLICABLE 1.25 6.43 17.00 -2.00 8 MG/L <br />06/91 <br />06/0 <br /> <br />HYDROXIDE <br />AS CAC03 4.29 3.43 12.00 -1.00 24 MG/L 03/81 06/0 <br /> <br /> <br />AS OH -2.00 0.00 <br />-2.00 <br />-2.00 <br />1 <br />MG/L <br />11/96 <br />11/91 <br /> <br />SULFATE <br />NOT APPLICABLE -1.50 1.00 0.00 -2.00 4 MG/L 06/92 06/9! <br /> <br />CATIONS <br /> <br />CALCIUM <br /> <br />DISSOLVED 40.00. 30.04 <br />95.00 <br />-10.00 <br />24 <br />MG/L <br />03/81 <br />06/0 <br /> 30.09 23.41 76.00 4.40 16 MG/L 06/83 06/0( <br /> <br />MAGNESIUM TOTAL RECOV 50.38 7.07 54.00 33.00 8 MG/L 03/81 12/8; <br /> DISSOLVED 13.71 8.97 24.20 2.00 16 MG/L 06/83 06/0( <br /> <br />POTASSIUM TOTAL RECOV 21.93 1.01 23.00 20.00 8 MG/L 03/81 12/8; <br /> DISSOLVED 1.80 0.00 1.80 1.80 1 MG/L <br />06/83 <br />06/8; <br /> <br />SAR TOTAL RECOV 2.09 0.23 2.50 1.80 8 MG/L 03/81 12/8; <br /> <br />SODIUM NOT APPLICABLE 0.99 0.23 1.68 0.50 20 UNDEFINED 03/81 06/9: <br /> DISSOLVED 24.10 9.81 38.00 8.00 16 MG/L 06/83 06/0( <br /> <br />MEASURED PROPERTIES <br />WATER LEVEL TOTAL RECOV <br />FIELD 33.50 2.62 37.00 30.00 8 MG/L 03/81 12/8, <br /> <br />MINOR <br />FLUORIDE <br />NOT APPLICABLE 6130.38 1.24 6132.60 6127.35 29 FEET (MSL) 06/84 11/9' <br /> <br /> <br />NUTRIENTS <br /> <br />NITROGEN <br /> <br />NITRATE 0.56 0.12 <br />0.80 <br />0.40 <br />19 <br />MG/L <br />03/81 <br />06/9 <br /> <br /> <br />NITRITE -0.01 0.03 <br />0.09 <br />-0.02 <br />15 <br />MG/L <br />03/85 <br />06/0( <br /> <br /> <br />N03+N02 0.00 0.01 0.02 -0.01 5 MG/L <br />06/92 <br />06/9( <br /> <br />PHYSICAL PROPERTIES <br />ACIDITY <br /> <br />AS CAC03 0.01 0.06 0.26 -0.02 21 MG/L <br />03/81 ( <br />06/9, <br /> <br />ALKALINITY <br />TOTAL 0.00 0.00 0.00 0.00 1 MG/L <br />03/85 t <br />03/8, <br /> <br />CONDUCTIVITY <br />FIELD 165.09 84.13 245.00 24.00 23 MG/L 03/81 06/0( <br /> <br />LAB 434.99 255.86 1440.00 109.20 81 UMHOS/CM 01/82 06/01 <br /> <br />HARDNESS <br />AS CAC03 397.00 176.35 570.00 106.00 24 UMHOS/CM 03/81 06/0( <br /> <br />OIL&GREASE VISIBLE <br />NOT APPLICABLE 171.81 80.15 230.00 26.00 16 MG/L <br />03/81 c <br />06/9, <br /> <br />PH <br />FIELD 2.00 0.00 2.00 2.00 8 UNDEFINED 03/93 12/9( <br /> <br />LAB 7.43 0.57 8.80 6.00 81 PH <br />01/82 <br />06/01 <br /> <br />SOLIDS <br />SUSPENDED 7.54 0.72 8.41. 5.90 23 PH 06/81 06/0( <br /> <br />TOTAL-DISS 133.00 184.21 345.00 12.00 3 MG/L <br />03/81 <br />03/8, <br /> <br />TEMPERATURE <br />FIELD 267.26 96.46 375.00 70.00 19 MG/L 03/81 06/92 <br /> <br />PRIMARY <br />ARSENIC <br />DISSOLVED 10.88 3.10 18.90 4.00 77 DEGREES C 05/82 06/01 <br /> <br />TOTAL RECOV -3.13 10.00 6.00 -40.00 16 UG/L 06/83 06/0( <br /> <br />BARIUM <br />DISSOLVED 0.13 3.04 7.00 -2.00 8 UG/L <br />03/81 <br />12/8 <br /> -200.00 0.00 -200.00 -200.00 1 UG/L <br />06/83 <br />06l811: