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TWENTYMILE COMPANY ! • <br />PERMIT REVISION 6 <br />PERIOD OF RECORD WATER QUALITY DATA <br />CATEGORY PARAMETER ANALYSIS TYPE AVERAGE STD. DEV. MAXIMUM MINIMUM UNITS COUNT BEGIN END <br />PHYSICAL PROPERTIES TEMPERATURE FIELD 8.84 3.37 20.00 2.90 DEGREES C 21 I Ol/85 12/02 <br /> CONDUCTNITY FIELD 990.75 648.73 5,180.00 410.00 UMHOS/CM 210 Ol/85 12/02 <br /> LAB 840.63 387.55 2,390.00 443.00 UMHOS/CM 59 01/87 11/02 <br /> PH FIELD 7.61 0.47 10.40 6.53 PH 209 02/85 12/02 <br /> LAB 7.38 0.28 7.89 6.88 PH 22 07/86 11/02 <br /> ALKALDJITY TOTAL 272.15 61.63 430.00 134.00 MG/L 53 07/86 08/99 <br /> HARDNESS AS CAC03 514.68 415.23 2,336.00 212.00 MG/L 60 Ol/85 08/99 <br /> SOLIDS SUSPENDED 2,142.00 0.00 2,142.00 2,142.00 MG/L 1 06/91 06/91 <br /> TOTAL-DISS 765.72 784.19 4,592.00 253.00 MG/L 68 Ol/85 II/02 <br />CATIONS CALCIUM DISSOLVED 107.!0 88.17 520.00 5.10 MG/L 67 Ol/85 11/02 <br /> MAGNESIUM DISSOLVED 54.21 44.03 252.00 2.30 MG/L 67 01/85 11/02 <br /> SODIOM DISSOLVED 74.36 105.67 609.00 1.40 MG/L 67 Ol/85 11/02 <br /> SAR NOT APPLICABLE 1.23 1.22 5.48 0.43 UNDEFINED 55 07/86 08/99 <br />ANIONS BICARBONATE AS HC03 327.72 78.51 525.00 163.00 MG/L 71 01/85 11/02 <br /> CARBONATE AS C03 0.74 3.07 14.00 0.00 MG/L 35 02/91 11/02 <br /> HYDROXIDE AS OH 0.00 0.00 0.00 0.00 MG/L 19 03/95 08/99 <br /> CHLORIDE NOT APPLICABLE 11.33 6.11 ]8.00 6.00 MG/L 3 01/85 05/85 <br /> SULFATE NOT APPLICABLE 348.90 529.57 2,930.00 40.00 MG/L 71 01/85 11/02 <br />PRIMARY ARSENIC DISSOLVED 0.90 1.20 3.00 0.00 UG/L 10 01/85 04/89 <br /> CADMIUM DISSOLVED 0.05 0.16 0.80 0.00 UG/L 67 01/85 11/02 <br /> TOTAL RECOV 0.20 0.00 0.20 0.20 UG/L 1 06/91 06/91 <br /> LEAD DISSOLVED 2.93 10.09 50.00 0.00 UG/L 58 01/87 Il/02 <br /> TOTAL 0.00 0.00 0.00 0.00 UG/L 1 12/91 12/91 <br /> MERCURY DISSOLVED 0.00 0.03 0.20 0.00 UG/L 67 01/85 11/02 <br /> TOTAL RECOV 0.00 0.00 0.00 0.00 UG/L t 06/91 06/91 <br /> SELENIUM DISSOLVED 0.63 1.63 9.00 0.00 UG/L 67 01/85 11/02 <br /> TOTAL RECOV 3.00 0.00 3.00 3.00 UG/L 1 06/91 06/91 <br />SECONDARY SILVER TOTAL RECOV 0.00 0.00 0.00 0.00 UG/L 1 06/91 06/91 <br /> COPPER TOTAL 0.00 0.00 0.00 0.00 UG/L I 12/91 12/91 <br /> ZMC DISSOLVED 27.91 23.04 70.00 0.00 UG/L 11 01/85 04/89 <br /> TOTAL RECOV 40.00 0.00 40.00 40.00 UG/L 1 06/91 06/91 <br /> IRON DISSOLVED 571.19 2,256.16 17,000.00 0.00 UG/L 69 01/85 11/02 <br /> TOTAL RECOV 4,050.00 0.00 4,050.00 4,050.00 UG/L 1 06/91 06/91 <br /> MANGANESE DISSOLVED 1,527.29 2,124.55 10,200.00 0.00 UG/L 66 01/85 11/02 <br /> TOTAL 5,040.00 0.00 5,040.00 5,040.00 UG/L 1 12/91 12/91 <br /> TOTAL RECOV 390.00 0.00 390.00 390.00 UG/L 1 06/91 06/91 <br />TRACE METALS MOLYBDENUM DISSOLVED 0.17 1.31 10.00 0.00 UG/L 58 01/87 II/02 <br /> TOTAL RECOV 0.00 0.00 0.00 0.00 UG/L 1 06/91 06/91 <br />TABLE 8m SITE: 006-AY-1 (FISH CREEK ALLUVIUM) <br />