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TWENTYMILE COAL COMPANY <br />PERIOD OF RECORD WATER QUALITY DATA <br />SITE; SW-15 (FISH CREEK SURFACE SITE) oAiunl= 66ze.4 <br />CATF,GOR}' <br />S ARfETER , <br />PAR AA~LYSIS TYPE UNITS JUN .11TH JUL JUL AUC SEP NOV FEB MAY JUN AUG SEP <br />FIE}-D PARAMETERS DATP. 6/12/02 6/18/02 7/3/02 7/19/02 8/12/02 9/26/02 11/11/02 2/6/03 5/12/03 6/3/03 8/11/03 9/2/03 <br /> WATER ELEVATION FT ABOVE MSL 6621.2 6621.3 6627.5 6621.3 6621.3 6620.62 6621.9 6621.9 <br /> WATER LEVEL FT 7.24 7.12 6.95 7.12 DRY DRY 7.1 ICE 4.78 6.5 6.5 <br />SURFACE FLOW FLOW FIELD CES 1.75 0.97 0.35 0.35 2.2 O.i 0.1 <br />PHYSICAL PROPERTIES TEMPERATURE FIELD DEGREESC 11.7 11.8 12.3 3.3 6.5 13 13 <br /> CONDUCTIV]iY FIELD UMHOS/CM 700 710 722 1140 573 755 919 <br /> LAB UMHOS/CM 780 520 800 <br /> PH FIELD PH 8.13 B.IS 8.59 7.74 7.96 8.24 <br /> LAB PH 7.78 7.99 8.94 <br /> SOLIDS TOTAL-DISS MG/L 530 360 540 <br />CATIONS CALCIUM DISSOLVED MG/L 100 45 67 <br /> MAGNESIUM DISSOLVED MG/L 24 23 45 <br /> SODIUM DISSOLVED MGIL 51 16 42 <br />ANIONS BICARBONATE AS HC03 MG/L 950 140 300 <br /> CARBONATE, AS C03 MGIL < I < 1 5 <br /> SULFATE NOT APPLICABLE MG/L 130 120 _ <br />210 <br />PRIMARY CADMIUM DISSOLVED UGIL <5 <6 <5 <br /> LEAD DISSOLVED UG/L <60 <50 <60 <br /> MERCURY DISSOLVED UG/L <0.2 <0.2: <0.2 <br /> SELENIUM DISSOLVED UGIL <2 <2 7 <br />SECONDARY IRON DISSOLVED UG/L < IO 6900 670 <br /> MANGANESE DISSOLVED UGIL 860 140 65 <br />TRACE METALS MOLYBDENUM DISSOLVED UG/L <50 <50 <50 <br />NUTRIENTS NITROGEN AMMIA-FREE MGIL 0.42 0.06 <0.06 <br /> NITRATE MG/L 0.06 0.07 <0.02 <br /> NITRITE MG/L 0.04 0.21 0.04 <br /> N03+N02 MG/L 0.1 0.14 0.04 <br /> PHOSPHATE ORTHO-DISS MG/L 0.11 <0.01 ~ <0.01 <br />EXCEL:I~Emirwanmial~OMG~PR61Waar DVaWCw FC Swfaze wamr dau TABLE 10 <br />