2010-04-16_REPORT - C1981044 (5)

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Annua ft;drology Report l8 T Twen File Coal C ompany V Report run on: March 29, 2007 8:37 Ah Page 1 Project: 2003 Wil liams Fork Mine Stations 5D 5 MINE DITCH. (OUTFALL #003) Classification: DITCH Category Parameter Analysis Type Average Std Dev Max Min Count Units Begin End ANIONS BICARBONATE AS HC03 787.79 68.77 961.00 716.14 12 MG/L 09/81 05/90 CARBONATE AS C03 42.51 23.42 74.40 9.60 7 MG/L 09/81 03/83 CHLORIDE NOT APPLICABLE 18.00 3.44 22.00 12.00 15 MG/L 09/81 05/90 SULFATE NOT APPLICABLE 62.75 25.25 101.00 12.00 12 MG/L 09/81 05/90 BIOLOGICAL BACTERIA FECAL 2.00 0.00 2.00 2.00 1 NO/100ML 09/94 09/94 CATIONS CALCIUM DISSOLVED 15.00 0.00 15.00 15.00 1 MG/L 10/05 10/05 TOTAL 9.00 1.41 10.00 8.00 2 MG/L 08/83 09/83 TOTAL RECOV 15.67 6.20 24.00 7.00 9 MG/L 09/81 12/83 MAGNESIUM DISSOLVED 3.90 0.00 3.90 3.90 1 MG/L 10/05 10/05 TOTAL 4.50 0.71 5.00 4.00 2 MG/L 08/83 09/83 TOTAL RECOV 8.67 2.35 12.00 4.00 9 MG/L 09/81 12/83 POTASSIUM TOTAL 5.35 0.49 5.70 5.00 2 MG/L 08/83 09/83 TOTAL RECOV 4.87 0.74 6.40 3.60 9 MG/L 09/81 12/83 SAR NOT APPLICABLE 17.42 4.49 25.39 12.91 11 UNDEFINED 09/81 12/83 SODIUM TOTAL 327.50 7.78 333.00 322.00 2 MG/L 08/83 09/83 TOTAL RECOV 308.44 21.75 352.00 272.00 9 MG/L 09/81 12/83 GASES SULPHIDE TOTAL 0.10 0.13 0.32 -0.10 9 MG/L 10/89 02/00 MEASURED PROPERTIES FLOW RATE FIELD 1.16 1.21 6.29 0.01 182 CFS 01/84 12/90 unknown FIELD 1.05 1.14 6.29 0.01 372 CFS 01/84 12/91 MINOR FLUORIDE NOT APPLICABLE 2.23 0.11 2.41 2.07 11 MG/L 09/81 12/83 NUTRIENTS NITROGEN NITRATE -0.02 0.00 -0.02 -0.02 1 MG/L 05/90 05/90 N03+NO2 0.26 0.23 0.65 -0.02 12 MG/L 09/81 05/90 PHYSICAL PROPERTIES ACIDITY AS CAC03 -222.67 385.67 0.00 -668 00 3 MG/L 12/85 ALKALINITY TOTAL 666.50 47.08 788.00 . 616.00 12 MG/L 09/81 06/86 05/90 CONDUCTIVITY FIELD 1430.40 122.76 1880.00 676.00 707 UMHOS/CM 05/82 11/05 LAB 1260.00 150.37 1560.00 950.00 17 UMHOS/CM 09/81 08/89 HARDNESS AS CAC03 137.09 233.50 837.00 36.00 11 MG/L 09/81 12/83 344.00 507.50 930.00 48.00 3 UG/L 08/04 10/05 OIL&GREASE NOT APPLICABLE 2.33 5.66 16.00 -2.00 9 MG/L 12/81 03/96 OIL&GREASE VISIBLE NOT APPLICABLE 2.00 0.00 2.00 2.00 466 UNDEFINED 01/87 12/96 PH FIELD 7.64 0.30 8.65 6.90 713 PH 05/82 11/05 LAB 8.24 0.32 8.66 7.30 17 PH 09/81 05/90 SOLIDS SETTLEABLE -0.20 0.00 -0.20 -0.20 1. MUL 05/90 05/90 SUSPENDED 6.82 11.08 82.00 -5.00 400 MG/L 12/81 07/06 TOTAL-DISS 895.10 185.47 2600.00 450.00 108 MG/L 09/81 06/06