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Table 1. 2017 Water Quality Results -La Plata River-Upper Sampling Point(SW-1) <br /> May Day Idaho Mine Complex <br /> Sunrise Mining Company,LLC <br /> All values in mg/L unless otherwise noted <br /> Gate Safe Drinking Water Act <br /> Analyte 4/2=017 6/21/2017 1 1012412017 MCLM or SMCL(l) <br /> Field Measurements <br /> Temperature(°C) 1 1 104 88 <br /> Conductive S/cm 149 84 161 <br /> Dissolved Oxygen % 150 109 NA <br /> H SU 754 779 804 6-85 <br /> ORP mV 64 23 NA <br /> Flow cfs` NA NA 638 <br /> Lab Results <br /> Alkalinity,Bicarbonate 51 0 31 0 50 <br /> Alkalinity,Carbonate ND ND ND <br /> Alkalinity,Hydroxide ND ND ND <br /> Alkalinity,Total 51 0 31 0 50 <br /> Aluminum Dissolved by ICP ND ND ND 0 05 to 0 212j <br /> Ammonia ND ND ND TVS I') <br /> Antimony Dissolved by ICPMS ND NDI ND 0 006"' <br /> Arsenic 200 2 by ICP-MS ND ND ND 0 01j1) <br /> Arsenic Dissolved by ICPMS ND 00005 ND 0 010) <br /> Barium Dissolved by ICPMS 00395 00271 00535 211j <br /> Beryllium Dissolved by ICPMS ND ND ND 0 004"' <br /> Boron 200 2 by ICP ND ND ND <br /> Cadmium Dissolved by ICPMS ND ND ND 0 005(') <br /> Calcium Dissolved by ICP 1801 134 259 <br /> Chloride by IC ND ND ND 250(21 <br /> Chromium 200 2 by ICPMS ND ND ND oil,) <br /> Copper Dissolved by ICPMS 00061 00061 00022 1 3(')(3) 1 0(2) <br /> Cyanide,WAD ND ND ND 0 2(') <br /> Fluoride by IC 0 210 0 164 028 4 O('), 2 0(2) <br /> Hardness des 54 403 783 <br /> Iron 200 2 by ICP NDJ ND ND 0 30(2) <br /> Iron Dissolved by ICP ND ND ND 0 30(2) <br /> Lead 200 2 by ICPMS ND ND ND 0 015(')j3j <br /> Lead Dissolved by ICPMS ND ND ND 0 015j11(3) <br /> Magnesium Dissolved by ICP 222 1 66 334 0 0;7 <br /> Manganese Dissolved by ICPMS 00019 000281 00008 TVS(4) <br /> Mercury Dissolved by CVAA ND ND ND 0 002") <br /> Molybdenum Dissolved by ICPMS 00006 00006 0 001 <br /> Nickel Dissolved by ICPMS 00009 00008 00016 0 10) <br /> Nitrate as N by IC 0 106 0 063 0 112 100) <br /> Nitrate/Nitrite as N by IC Package 0 106 00625 0 112 100) <br /> Nitrite as N by IC ND ND ND 1(1) <br /> H Standard Units 792 805 804 6-8 5 <br /> Selenium Dissolved by ICPMS ND ND ND 0 05") <br /> Silver Dissolved by ICPMS ND ND ND 0 10(2) <br /> Solids,Total Dissolved TDS 750 750 85 500(2) <br /> Solids Total Suspended(TSS) ND 7 1 ND <br /> Sulfate by IC 11 9 950 356 250121 <br /> Thallium Dissolved by ICPMS ND ND ND 0 002 <br /> Uranium Dissolved b ICPMS 0 0001 ND 0 0002 30 /L(') <br /> Zinc Dissolved by ICPMS 1 000681 000231 00065 TVS") <br /> Notes <br /> mg/L=milligrams per Liter <br /> °C=degrees Celsius <br /> pS/cm=microsiemens per centimeter <br /> S U =standard units <br /> mV=millivolts <br /> cfs=cubic feet per second <br /> SGM P\Project Files\2017-460 001 Sunrise Mining Company-May Day Mine\M-Water Quality\ <br /> 1 1/082 01 7 This 1-10-May Day Idaho Mine Complex WQ-Results-2017 xesxSW-1 <br />