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• • <br />TABLE 8A <br />CYPRUS YAMPp VALLEY COAL CORP <br />SUMMARY OF PATER QUALITY DATA <br />STATION NUMBER: 0155 --- 001-5-5 <br />Average S[d Maximum Minimm Units Count Period <br />SECONDARY <br />COPPER DISSOLVED 4.375 42.4 80.000 -30.000 UG/L 16 03/79 - 04/83 <br />ZINC DISSOLVED 34.829 34.3 105.000 -10.000 UG/L 35 03/79 - 04/89 <br /> TOTAL RECOV 100.000 0.0 100.000 100.000 UG/L 1 06/91 - 06/91 <br />IRON DISSOLVED 385.506 1685.2 15000.000 -60.000 UG/L 81 03/79 - 08/96 <br /> TOTAL RECOV 290.000 0.0 290.000 290.000 UG/L 1 06/91 - 06/91 <br />MANGANESE DISSOLVED 151.684 173.9 640.000 -30.000 UG/L 79 03/79 - 08/96 <br /> TOTAL RECOV -10.000 0.0 -10.000 -10.000 UG/L 1 06/91 - 06/91 <br />TRACE METALS <br />ALUMINUM DISSOLVED -400.000 0.0 -400.000 -400.000 UG/L 6 05/81 - 04/83 <br />BORON DISSOLVED 116.667 161.1 400.000 -100.000 UG/L 6 05/81 - 04/83 <br />MOLYBDENUM DISSOLVED -54.091 56.0 -10.000 -300.000 UG/L 44 05/81 - 08/96 <br /> TOTAL RECOY -50.000 0.0 -50.000 -50.000 UG/L 1 06/91 - 06/91 <br />NUTRIENTS <br />NITROGEN AMMIUM-TOTAL 1.236 2.8 13.700 -0.200 MG/L 51 05/81 - 08/96 <br /> pMMIA-FREE 0.469 2.2 13.700 -U.O50 MG/l 48 05/81 - 08/96 <br /> NITRATE 0.365 0.4 1.770 -0.020 MG/L 40 10/86 - 08/96 <br /> NITRITE -0.006 0.0 0.010 -0.020 MG/L 8 10/86 - 08/96 <br /> N03+N02 1.157 2.5 12.750 -0.020 MG/L 78 07/79 - 08/96 <br />PHOSPHATE ORTHO-DISS 0.167 0.5 1.780 -0.020 MG/L 59 05/81 - 08/96 <br />~~ <br />Report Date: 11-MAR-97 Page: 3 of 3 <br />Report Name: WDA020R <br />