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~~ <br /> TABLE 11A <br /> CYPRUS YANPA VALLEY COAL CORP <br /> SUMMARY OF VATER QUALITY DATA <br /> STATION NUMBER: 06AY1 --- 006-AY-1 <br />Average Std Mex inun Minimum Units Count Period <br />PRIMARY <br />ARSENIC DISSOLVED 0.200 1.8 3.000 -2.000 UG/l 10 01/85 - 04/89 <br />CADMIUM DISSOLVED -1.045 2.0 0.800 -5.000 UG/L 47 01/85 - 08/96 <br /> TOTAL RECOV 0.200 0.0 0.200 0.200 UG/L 1 06/91 - 06/91 <br />LEAD DISSOLVED -12.895 18.9 50.000 -20.000 UG/L 38 01/87 - 08/96 <br /> TOTAL -20.000 0.0 -20.000 -20.000 UG/L 1 12/91 - 12/91 <br />MERCURY DISSOLVED -0.283 0.7 0.200 -5.000 UG/L 47 07/85 - 08/96 <br /> TOTAL RECOV -0.100 0.0 -0.100 -0.100 UG/L 1 06/91 - 06/91 <br />SELENIUM DISSOLVED -0.383 1.9 9.000 -2.000 UG/L 47 01/85 - 08/96 <br /> 70TA1 RECOV 3.000 0.0 3.000 3.000 UG/L 1 06/91 - 06/91 <br />SILVER TOTAL RECOV -0.500 0.0 -0.500 -0.500 UG/L 1 06/91 - 06/91 <br />SECONDARY <br />COPPER TOTAL -10.000 0.0 -10.000 -10.000 UG/L 1 12/91 - 12/91 <br />ZINC DISSOLVED 26.091 25.7 70.000 -10.000 UG/L 11 01/85 - 04/89 <br /> TOTAL RECOV 40.000 0.0 40.000 40.000 UC/L 1 06/91 - 06/91 <br />IRON DISSOLVED 778.333 2686.0 17000.000 -100.000 UG/L 48 O1/BS - 08/96 <br /> TOTAL RECOV 4050.000 0.0 4050.000 4050.000 UG/L 1 06/91 - 06/91 <br />MANGANESE DISSOLVED 1873.191 2396.2 10200.000 10.000 UG/L 47 01/85 - 08/96 <br /> TOTAL 5040.000 0.0 5040.000 5040.000 UG/L 1 12/91 - 12/91 <br /> 70TAL RECOV 390.000 0.0 390.000 390.000 UG/L 1 06/91 - 06/91 <br />Report Date: 11-1V1R•97 Pege: 2 of 3 <br />Report Name: VOA020R <br />