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PAGE 3 <br /> TABLE 19 (CONTINUED) <br /> SUMMARY OF WATER QUALITY DATA <br /> NO. 5 MINE DISCHARGE <br /> PARAMETER MEAN STD. DEV. MAX. MIN. UNITS. NO. PERIOD <br /> SECONDARY <br /> COPPER DISSOLVED -20.000 0.000 <20.000 <20.000 UG/L 1 8/83 <br /> COPPER TOTAL <3.045 3.860 <20.000 <2.000 UG/L 22 1/83- 3/85 <br /> COPPER TOTAL RECO <54.714 103.978 290.000 <2.000 UG/L 7 9/81-12/82 <br /> ZINC DISSOLVED <5.000 0.000 <5.000 <5.000 UG/L 1 8/83 <br /> ZINC TOTAL <34.213 76.957 630.000 <5.000 UG/L 75 1/83- 7/86 <br /> ZINC TOTAL RECO <19.571 35.714 331 .000 <5.000 UG/L 91 9/81-12/89 <br /> IRON TOTAL <307.230 265.221 1300.000 <20.000 UG/L 65 9/81- 5/86 <br /> IRON TOTAL RECO 216.590 100.532 490.000 20.000 UG/L 44 6/86-12/89 <br /> MANGANESE TOTAL <17.500 5.000 20.000 10.000 UG/L 4 8/83- 3/86 <br /> MANGANESE TOTAL RECO <20.000 4.714 30.000 <10,000 UG/L 10 9/61- 6/86 <br /> TRACE METALS <br /> BORON DISSOLVED 380.000 0.000 380.000 380.000 UG/L 1 8/83 <br /> BORON TOTAL 415.000 49.497 450.000 380.000 UG/L 2 8/83- 9/83 <br /> BORON TOTAL RECO 413.333 121 .655 520.000 120.000 UG/L 9 9/81-12/83 <br /> MOLYBDENUM DISSOLVED <200.000 0.000 <200.000 <200.000 UG/L 1 8/83 <br /> MOLYBDENUM TOTAL <200.000 0.000 <200.000 <200.000 UG/L 2 8/83- 9/83 <br /> MOLYBDENUM TOTAL RECO -222.222 66.666 400.000 <200.000 UG/L 9 9/81-12/83 <br /> NUTRIENTS <br /> NITROGEN NO3-NO2 <0.297 0.204 0.650 <0.020 MG/L 11 9/81-12/83 <br /> ORGANICS <br /> OILBGREASE <8.500 10.606 16.000 <1 .000 MG/L 2 12/81-10/89 <br /> U = MICRO <br />