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• , 35 • <br />CYPRUS YAMPA VALLEY COAL CORP <br />FOIDEL CK. DOWNSTREAM. USGS (700) <br />SUMMIIRT OF WATER OUALITT DATA <br />STATION NUMBER: 700 --- MIDDLE ABY MINE 3 (09243700) <br />Average Std Maximum Minimm Units Count Period <br />SECONDARY <br />COPPER TOTAL RECOV 65.688 154.8 500.000 1.000 UG/L 16 04/79 - 10/87 <br />ZINC TOTAL 12.333 14.0 50.000 3.000 UG/L 12 04/79 - 07/81 <br /> TOTAL RECOV 19.655 16.4 70.000 10.000 UG/L 29 04/87 - 08/94 <br />IRON DISSOLVED 30.200 31.0 160.000 10.000 UG/L 40 11/78 - 09/86 <br /> TOTAL RECOV 3729.355 8657.2 52000.000 1.000 UG/L 76 04/79 - 08/94 <br />MANGANESE DISSOLVED 88.438 88.9 370.000 10.000 UG/L 32 11/78 - 04/90 <br /> TOTAL RE[OV 252.414 317.2 2400.000 10.000 UG/L 87 11/78 - 08/94 <br />TRACE METALS <br />BORON DISSOLVED 42.000 12.3 60.000 20.000 UG/L 10 12/85 - 07/87 <br /> TOTAL 37.500 12.9 60.000 20.000 UG/L 16 10/83 - 09/85 <br />MOLYBDENUM TOTAL RECOV 28.133 22.6 50.000 1.000 UG/L 30 10/86 - 08/94 <br />NUTRIENTS <br />NITROGEN AMMIUM-TOTAL 0.070 0.0 0.180 0.010 MG/L 30 10/86 - 08/94 <br /> AMMIA-FREE 0.034 0.1 0.340 0.001 MG/L 47 10/83 - 09/92 <br /> NITRATE 0.070 0.1 0.440 0.010 MG/L 22 04/89 - 08/94 <br /> NITRITE 0.010 0.0 0.010 0.010 MG/L 17 12/85 - 07/88 <br /> N03+N02 0.159 0.2 0.680 0.010 MG/L 55 10/83 - 08/94 <br />PHOSPHATE ORTXO-OISS 0.018 0.0 0.100 0.005 MG/l 54 10/83 - 08/94 <br />Report Date: 13-MAR-96 Page: 3 of 3 <br />Report Name: WOA020R <br /> <br />