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Table 4. 2017 Water Quality Results-Idaho Mill Spring(ID-SW) <br /> May Day Idaho Mine Complex <br /> Sunrise Mining,LLC <br /> All values in mg/L unless otherwise noted <br /> Date Safe Drinking Water Act <br /> Analyte 4/28/2017 I 6/21/2017 I 10/24/2017 112/27/2017 MCL1111orSMCL121 . <br /> Field Measurements <br /> Temperature(CC) 5.07 6.01 6.5 5.3 <br /> Conductivity(pS/cm) 224 233 291 298 <br /> Dissolved Oxygen(%) 10.7 10.6 NA NA <br /> pH(S.U.) 8.31 8.37 8.32 8.21 6-8.5 <br /> ORP(my) -11 27.6 NA NA <br /> Flow(cfs) NA NA NA NA <br /> Lab Results _ <br /> Alkalinity,Bicarbonate 64.0 60.0 55.0 129.0 <br /> Alkalinity,Carbonate ND ND ND ND <br /> Alkalinity,Hydroxide ND ND ND ND <br /> Alkalinity,Total 64.0 60.0 55.0 129.0 <br /> Aluminum Dissolved by ICP ND ND ND ND 0.05 to 0.2(2) <br /> Ammonia ND ND ND ND TVS 141 <br /> Antimony Dissolved by ICPMS 0.0010 ND ND 0.0010 0.006111 <br /> Arsenic 200.2 by ICP-MS 0.0039 ND ND ND 0.01(11 <br /> Arsenic Dissolved by ICPMS ND 0.0005 ND 0.0011 0.01)1) <br /> Barium Dissolved by ICPMS 0.0652 0.0440 0.0586 0.0773 21') <br /> Beryllium Dissolved by ICPMS ND ND ND ND 0.004(1) <br /> Boron 200.2 by ICP ND ND ND ND <br /> Cadmium Dissolved by ICPMS ND ND NA ND 0.005(1) <br /> Calcium Dissolved by ICP 24.8 19.1 25.4 39.6 <br /> Chloride by IC 1.19 ND, ND ND 250(2) <br /> Chromium 200.2 by ICPMS ND ND ND 0.0011 0.11') <br /> Chromium NA 0.0012 NA NA <br /> Cobalt NA ND NA NA <br /> Copper Dissolved by ICPMS 0.0032 0.0027 0.0012 0.0009 1.3(1113),1.0)2) <br /> Cyanide,WAD ND ND ND ND 0.2(1) <br /> Fluoride by IC 0.220 0.232 0.226 ND 4.00), 2.0)2) <br /> Hardness,dis 76.6 58.7 77.7 155 <br /> Iron 200.2 by ICP 0.488 ND ND ND 0.30)2) <br /> Iron Dissolved by ICP ND ND ND ND 0.30)21 <br /> Lead 200.2 by ICPMS 0.0081 ND ND ND, 0.015(111') <br /> Lead Dissolved by ICPMS ND 0.0007 ND ND 0.01511113) <br /> Magnesium Dissolved by ICP 3.54 2.68 3.48 13.6 0.05)2) <br /> Manganese Dissolved by ICPMS ND 0.0012 0.001 0.0008 TVS(41 <br /> Mercury Dissolved by CVAA ND ND ND ND 0.002(1) <br /> Molybdenum Dissolved by ICPMS 0.0011 0.0009 0.0008 0.0006 <br /> Nickel Dissolved by ICPMS 0.0010 0.0012 0.0013 0.0021 0.10) <br /> Nitrate as N by IC 1.12 0.042 0.032 0.148 10)1) <br /> Nitrate/Nitrite as N by IC Package 1.12 0.0415 ND 0.148 10)1) <br /> Nitrite as N by IC ND ND ND ND 1)1) <br /> pH(S.U.) 7.27 8.22 7.7 8.22 6-8.5 <br /> Selenium Dissolved by ICPMS ND ND ND ND 0.05111 <br /> Silver Dissolved by ICPMS ND ND ND ND 0.10(2) <br /> Solids,Total Dissolved(TDS) 90.0 110 125 185 <br /> Solids,Total Suspended(TSS) 32.0 ND 3.25 0.505 <br /> Sulfate by IC 18.6 11.7 24.3 39.9 250(2) <br /> Thallium Dissolved by ICPMS ND 0.0008 ND ND 0.00211 <br /> Uranium Dissolved by ICPMS 0.3 0.1 0.2 1.1 30 pg/L11) <br /> Vanadium NA ND NA NA <br /> Zinc Dissolved by ICPMS 0.0031 ND 0.0032 0.0157 TVS141 <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 /> p.g/L=microgram per Liter <br /> NA=not applicable <br /> ND=not detected <br /> SGM P:\Project Files 12017-460.001 Sunrise Mining-May Day Mine\M-Water Quality\ <br /> 01/1 5201 8 Tbis.1-10-May Day Idaho Mine Complex WO-Results-2017.xisxiD-Spring <br />