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Table 7. 2017 Water Quality Results -May Day No. 1 Well (MD-1) <br /> May Day Idaho Mine Complex <br /> Sunrise Mining Company, LLC <br /> All values in mg/L unless otherwise noted <br /> Analyte Date Safe Drinking Water Act <br /> 4/28/2017 6/22/2017 10/25/2017 MCLt t or SMCLtn <br /> Field Measurements <br /> Temperature °C) 109 NA 80 <br /> Conductivity S/cm) 38 NA 427 <br /> Dissolved Oxygen % 35 NA NA <br /> H S.U. 724 NA 724 6-8.5 <br /> ORP mV -43 NA NA <br /> Static Water Level feet 128.4 NA 1425, <br /> Lab Results <br /> Aluminum Dissolved by ICP ND ND ND 0.05 to 0.212) <br /> Antimony Dissolved by ICPMS 0.0006 ND 0.0005 0 006"' <br /> Arsenic Dissolved by ICPMS ND 0.0006 ND 0.0111) <br /> Barium Dissolved by ICPMS 0.0182 0.0175 0.0157 2j1j <br /> Beryllium Dissolved by ICPMS ND ND ND 0 004j'j <br /> Boron Dissolved by ICP ND ND ND <br /> Cadmium Dissolved by ICPMS ND ND ND 0 005j'j <br /> Chromium Dissolved by ICPMS 0.0170 0.0102 0.0305 0.10) <br /> Cobalt Dissolved by ICPMS 00002 0.0003 0.0004 <br /> Copper Dissolved by ICPMS 000031 00014 00004 1.3j'jt3j, 1 0t2j <br /> Cyanide,WAD ND ND ND 0 2t'j <br /> Fluoride by IC 0 210 0.308 0 273 4 0(l), 2.0(2) <br /> Iron Dissolved by ICP ND ND ND 0.3012) <br /> Lead Dissolved by ICPMS ND ND ND 0.015j'j(3) <br /> Manganese Dissolved by ICPMS 0 192 0.363 0.250 TVS(4) <br /> Mercury Dissolved by CVAA ND ND ND 0.002(') <br /> Molybdenum Dissolved by ICPMS ND ND ND <br /> Nickel Dissolved by ICPMS 0.0038 00037 0.0050 0 10) <br /> Nitrate as N by IC 0.230 ND 0.020 100) <br /> Nitrate/Nitrite as N by IC Package 023 ND ND 100) <br /> Nitrite as N by IC ND ND ND 1(1) <br /> H S.0 743 745 732 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 /> Sodium Dissolved by ICP 236 295 275 <br /> Solids,Total Dissolved TDS 430 590 520 <br /> Sulfate by IC 111 183 131 250(2) <br /> Thallium Dissolved by ICPMS ND ND ND 0.002 <br /> Uranium Dissolved by ICPMS 00006 0.0008 0.0009 30 /L(') <br /> Vanadium ND NDI 00083, <br /> Zinc Dissolved by ICPMS 1 00033 000581 000351 TVSj4j <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 /> µg/L=microgram per Liter <br /> NA=not applicable <br /> SGM P\Project Files\2017-460 001 Sunrise Mining Company-May Day Mine\M-Water Quality\ <br /> 11/09/2017 Tbls 1-10-May Day Idaho Mine Complex WQ-Results-2017 xisxMD-1 <br />