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' z <br /> Annual <br />?drology Report , <br /> Twen*e Coal Company <br />Report run on: March 29, 2007 8:37 Ah Page 2 <br />Project: 2003 Williams Fork.Mine Stations 5D 5 MINEDISCH. (OUTFALL #003) Classification: DITCH <br />Category Parameter Analysis Type Average Std;Dev Max Min Count Units Begin End <br />PHYSICAL PROPERTIES TEMPERATURE FIELD 14.69 3.86 50.00 4.00 712 DEGREES C 05/82 11/05 <br />PRIMARY ARSENIC DISSOLVED -2.00 0.00 -2.00 -2.00 1 UG/L 08/83 08/83 <br /> TOTAL -1.67 0.58 -1.00 -2.00 3 UG/L 08/83 05/90 <br /> TOTAL RECOV -0.33 2.35 4.00 -2.00 9 UG/L 09/81 12/83 <br /> BARIUM DISSOLVED 200.00 0.00 200.00 200.00 1 UG/L 08/83 08/83 <br /> TOTAL 0.00 282.84 200.00 -200.00 2 UG/L 08/83 09/83 <br /> TOTAL RECOV 111.11 310.02 500.00 -200.00 9 UG/L 09/81 12/83 <br /> CADMIUM DISSOLVED 5.00 0.00 5.00 5.00 1 UG/L 08/83 08/83 <br /> TOTAL -1.38 3.24 17.00 -5.00 42 UG/L 01/83 03/85 <br /> TOTAL RECOV -3.62 1.84 0.20 -5.00 11 UG/L 09/81 05/90 <br /> LEAD DISSOLVED -20.00 0.00 -20.00 -20.00 1 UG/L 08/83 08/83 <br /> TOTAL 1.00 11.96 50.00 -20.00 22 UG/L 01/83 03/85 <br /> TOTAL RECOV -20.00 31.83 20.00 -70.00 10 UG/L 09/81 12/84 <br /> MERCURY DISSOLVED -1.00 0.00 -1.00 -1.00 1 UG/L 08/83 08/83 <br /> TOTAL -0.50 0.14 -0.10 -1.00 21 UG/L 01/83 05/90 <br /> TOTAL RECOV -0.71 0.26 -0.50 -1.00 12 UG/L 09/81 12/84 <br /> SELENIUM DISSOLVED -2.00 0.00 -2.00 -2.00 1 UG/L 08/83 08/83 <br /> TOTAL -1.67 0.58 -1.00 -2.00 3 UG/L 08/83 05/90 <br /> TOTAL RECOV -0.78 1.64 2.00 -2.00 9 UG/L 09/81 12/83 <br /> SILVER TOTAL 0.29 2.01 9.00 -0.20 21 UG/L 01/83 03/85 <br />SECONDARY COPPER DISSOLVED -20.00 0.00 -20.00 -20.00 1 UG/L 08/83 08/83 <br /> TOTAL -1.86 4.58 5.00 -20.00 22 UG/L 01/83 03/85 <br /> TOTAL RECOV 19.45 90.37 290.00 -20.00 11 UG/L 09/81 05/90 <br /> IRON DISSOLVED 170.00 42.43 200.00 140.00 2 UG/L 05/90 01/92 <br /> TOTAL 295.54 278.39 1300.00 -280.00 65 UG/L 09/81 05/86 <br /> TOTAL RECOV 282.13 217.94 1700.00 0.06 167 UG/L 03/84 06/06 <br /> MANGANESE DISSOLVED -10.00 0.00 -10.00 -10.00 1 UG/L 05/90 05/90 <br /> TOTAL -2.50 20.62 20.00 -20.00 4 UG/L 08/83 03/86 <br /> TOTAL RECOV -7.27 20.05 30.00 -20.00 11 UG/L 09/81 05/90 <br /> SILVER TOTAL RECOV -0.33 0.33 -0.20 -1.00 6 UG/L 09/82 05/90 <br /> ZINC DISSOLVED 12.50 24.75 30.00 -5.00 2 UG/L 08/83 01/92 <br /> TOTAL 29.68 78.84 630.00 -10.00 75 UG/L 01/83 07/86 <br /> TOTAL RECOV 16.26 30.70 331.00 -10.00 259 UG/L 09/81 06/06 <br />TRACE METALS BORON DISSOLVED 365.00 21.21 380.00 350.00 2 UG/L 08/83 05/90 <br /> TOTAL 415.00 49.50 450.00 380.00 2 UG/L 08/83 09183