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• TA~13A • <br />CYPRUS YAMPA VALLEY COAL CORP <br />SUMMARY OF 4ATER QUALITY DATA <br />STATION NUMBER: 29 --- MIDDLE BELON MINE 3 (29) <br />Average S[d Maximum Mininl~an Units Count Period <br />SECONDARY <br />COPPER TOTAL -10.000 22.6 20.000 -30.000 UG/L 12 10/80 - 10/85 <br /> TOTAL RECOV -8.000 6.2 10.000 -10.000 UG/L 20 03/86 - 01/87 <br />ZINC TOTAL 132.538 381.1 1400.000 -5.000 UG/L 13 10/80 - 10/BS <br /> TOTAL RECOV 12.857 23.1 80.000 -10.000 UG/L 56 03/86 09/95 <br />IRON DISSOLVED 330.000 0.0 330.000 330.000 UG/L 1 09/89 - 09/89 <br /> TOTAL 5421.946 11964.8 96000.000 -20.000 UG/L 165 03/79 - 02/86 <br /> TOTAL RECOV 1072.881 1407.8 7760.000 -20.000 UG/L 59 03/86 - 09/95 <br />MANGANESE DISSOLVED 340.000 325.3 570.000 110.000 UG/L 2 09/89 - 04/90 <br /> TOTAL 481.373 1835.1 22500.000 -20.000 UG/L 185 03/79 - 02/86 <br /> TOTAL RECOV 369.644 173.7 850.000 140.000 UG/L 59 03/86 - 09/95 <br />TRACE METALS <br />BORON TOTAL 151.429 306.3 800.000 -100.000 UC/L 7 10/80 - 04/83 <br />MOLYBDENUM DISSOLVED -50.000 0.0 -50.000 -50.000 UG/L 1 09/89 - 09/89 <br /> TOTAL -137.500 102.5 100.000 -300.000 UG/l 12 10/80 - 10/85 <br /> TOTAL RECOV -40.893 18.0 20.000 -50.000 UG/L 56 03/86 - 09/95 <br />NUTRIENTS <br />NITROGEN AMMIUN-TOTAL 0.086 0.2 1.000 -0.200 MG/L 42 04/81 - 09/95 <br /> AMMIA-FREE •0.004 0.0 0.008 -0.050 MG/L 35 10/80 - 09/95 <br /> NITRATE 0.231 0.3 1.160 -0.020 MG/L 52 OS/86 - 09/95 <br /> NITRITE 0.043 0.2 0.850 -0.020 NG/L 34 02/86 - 09/95 <br /> N03+N02 1.107 1.1 6.500 -0.500 MG/L 180 10/80 - 09/95 <br />PHOSPHATE ORTHO-D[SS 0.013 0.0 0.220 -0.020 MG/L 69 10/80 - 09/95 <br />Report Dete: 22-MAR-96 Page: 4 of 4 <br />Report Name: NGA020R <br />