2009-03-03_REPORT - C1982056 (3)

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Annual H?logy Report n IDA Twent r o y al C ompany Report run on: February 23, 200712.12 PA Page 1 Project: 2000 Foidel Creek Mine Station: 0155 001-S-5 Classification: WELL Category Parameter Analysis Type Average Std Dev Max Min Count Units Begin End ANIONS BICARBONATE AS HCO3 494.63 101.76 892.80 174.00 111 MG/L 05/79 05/06 CARBONATE AS CO3 2.50 8.46 33.60 -2.00 56 MG/L 05179 05/06 CHLORIDE NOT APPLICABLE 14.42 4.25 2100 3.00 33 MG/L 08/79 01/87 HYDROXIDE AS OH -1.90 0.44 0.00 -2.00 21 MG/L 12/94 05/06 SULFATE NOT APPLICABLE 559.30 210.58 1100.00 253.00 114 MG/L 03/79 05/06 CATIONS CALCIUM DISSOLVED 141.52 52.73 440.00 4.00 112 MG/L 03/79 05/06 MAGNESIUM DISSOLVED 61.82 21.81 156.00 0.65 111 MG/L 03/79 05/06 POTASSIUM DISSOLVED 5.06 2.52 10.00 1.72 18 MG/L 03/79 04/83 SAR _ NOT APPLICABLE 3.29 1.21 10.52 0.56 89 UNDEFINED 03/79 08/99 SODIUM DISSOLVED 175.05 50.80 318.00 20.00 111 MG/L 03/79 05/06 MEASURED PROPERTIES WATER LEVEL FIELD 6801.65 0.88 6804.50 6800.25 159 FEET (MSL) 03/79 09/92 MINOR FLUORIDE NOT APPLICABLE 0.09 0.36 0.42 -0.50 12 MG/L 07/79 04/83 NUTRIENTS NITROGEN AMMIA-FREE 0.95 2.67 13.70 -0.05 77 MG/L 05/81 09/05 AMMIUM-TOTAL 5.56 31.97 270.00 -0.20 71 MG/L 05/81 05/06 NITRATE 0.25 0.35 1.77 -0.02 69 MG/L 10/86 09/05 NITRITE 0.01 0.05 0.17 -0.02 37 MG/L 10/86 09/05 N03+NO2 0.86 2.14 12.75 -0.02 108 MG/L 07/79 05/06 PHOSPHATE ORTHO-DISS 0.21 0.44 1.78 -0.02 90 MG/L 05/81 05/06 PHYSICAL PROPERTIES ACIDITY AS CAC03 9.30 13.72 19.00 -0.40 2 MG/L 05/81 11/81 ALKALINITY TOTAL 433.02 67.05 744.00 222.00 55 MG/L 07/86 05/06 CONDUCTIVITY FIELD 1552.96 516.55 3020.00 225.00 276 UMHOS/CM 0709 09/05 LAB 1821.81 325.07 2500.00 1230.00 68 UMHOS/CM 04/87 05/06 HARDNESS AS CAC03 557.45 149.74 1070.00 32.23 83 MG/L 03/79 08/99 PH FIELD 7.51 0.37 8.50 6.19 277 PH 07/79 08/03 LAB 7.69 0.27 8.20 7.12 30 PH 07/86 05/06 SOLIDS SUSPENDED 28.00 0.00 28.00 28.00 1 MG/L 06/91 06/91 TOTAL-DISS 1223.34 342.16 2000.00 728.00 111 MG/L 03/79 05/06 TEMPERATURE FIELD 9.37 3.41 19.00 4.00 273 DEGREES C 07/79 08/03 PRIMARY ARSENIC DISSOLVED -0.83 2.17 2.00 -5.00 23 UG/L 05/81 04/89 BARIUM DISSOLVED 84.55 369.28 800.00 -300.00 11 UG/L 04/79 11/81 CADMIUM DISSOLVED -2.15 7.74 36.00 -20.00 91 UG/L 05/81 05/06 TOTAL RECOV 0.20 0.00 0.20 0.20 1 UG/L 06/91 06/91 LEAD DISSOLVED -34.32 56.81 200.00 -200.00 74 UG/L 05/81 05/06 MERCURY DISSOLVED -0.10 0.81 7.00 -1.00 90 UG/L 05/81 05/06 TOTAL RECOV -0.10 0.00 -0.10 -0.10 1 UG/L 06/91 06/91 2.0 A