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Table 1. 2018 Water Quality Results-La Plata River-Upper Sampling Point(SW-1) <br /> May Day Idaho Mine Complex <br /> Sunrise Mining,LLC <br /> All values in mg/L unless otherwise noted <br /> Analyte Date f <br /> Safe Drinktng Water ActtV8=18 = 412712018 81612018 1�t18f2D B , MCL -or3MCO" <br /> Field Measurements <br /> Temperature °C Dry 10.4 Dry Dry <br /> Conductivity S/cm Dry 109 Dry D <br /> H S.U. Dry 7.71 Dryl D 6-8.5 <br /> Flow cfs' Dry 40 Dryl D <br /> Lab Results <br /> Alkalinity,Bicarbonate Dry 31 Dry Dry <br /> Alkalinity,Carbonate Dry ND Dry Dry <br /> Alkalinity,Hydroxide Dry ND Dry Dry <br /> Alkalinity,Total Dry 31.0 Dry Dry <br /> Aluminum Dissolved by ICP Dry ND Dry Dry 0.05 to 0.2)2) <br /> Ammonia Dry ND Dry Dry TVS") <br /> Antimony Dissolved by ICPMS Dry ND Dry Dry 0.006)1) <br /> Arsenic 200.8 by ICPMS Dry ND Dry Dry 0.0101 <br /> Arsenic Dissolved by ICPMS Dry ND Dry Dry 0.01(11 <br /> Barium Dissolved by ICPMS Dry 0.0342 Dry Dry 2(1) <br /> Beryllium Dissolved by ICPMS Dry ND Dry Dry 0.004") <br /> Boron 200.2 by ICP Dry ND Dry Dryl <br /> Cadmium Dissolved by ICPMS Dry ND Dry Dry 0.00511) <br /> Calcium Dissolved by ICP Dry 17.2 Dry D <br /> Chloride by IC Dry ND Dry Dry 250121 <br /> Chromium 200.8 by ICPMS Dry ND Dry Dry 0.10) <br /> Copper Dissolved by ICPMS Dry 0.0052 Dry Dry 1.3111(3),1.0(2) <br /> Cyanide,WAD Dryl ND Dry Dry 0.2(1) <br /> Fluoride by IC Dry 0.237 Dry Dry 4.0(1), 2.0121 <br /> Hardness,dis Dry 52.1 Dry Dry <br /> Iron 200.2 by ICP Dry ND Dry Dry 0.30)21 <br /> Iron Dissolved by ICP Dry ND Dry Dry 0.30)2) <br /> Lead 200.8 by ICPMS Dry ND Dry Dry 0.015)1)13) <br /> Lead Dissolved by ICPMS Dry NDI Dry Dry 0.015(1))3) <br /> Magnesium Dissolved by ICP Dry 2.22 Dry Dry 0.05(2) <br /> Manganese Dissolved by ICPMS Dry 2.0 Dry Dry TVS(b) /L <br /> Mercury Dissolved by CVAA Dry ND Dry Dry 0.002(') <br /> Molybdenum Dissolved by ICPMS Dry 0.0010 Dry Dry <br /> Nickel Dissolved by ICPMS Dry 0.0014 Dry Dry 0.10) <br /> Nitrate as N by IC Dry 0.139 Dry Dry loll) <br /> Nitrate/Nitrite as N by IC Package Dry 0.139 Dry Dryl loll) <br /> Nitrite as N by IC Dry ND Dry Dry 1)1) <br /> H Standard Units Dry 8.17 Dry Dry 6-8.5 <br /> Selenium Dissolved by ICPMS Dry ND Dry Dry 0.05(') <br /> Silver Dissolved by ICPMS Dry ND Dry Dry 0.10'21 <br /> Solids,Total Dissolved TDS Dry 65.0 Pa Dry 500)2) <br /> Solids,Total Suspended(TSS) Dry 1.001 Drvi D <br /> Sulfate by IC Dry 14.9 D Dry 250121 <br /> Thallium Dissolved b ICPMS D ND D D 0.002 <br /> Uranium Dissolved by ICPMS Dry 0.1 D Dryl 30 /L(') <br /> Zinc Dissolved by ICPMS Dry 0.0039 D Dryl TVS(4) <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 /> µg/L=microgram per Liter <br /> NA=not applicable <br /> ND=not detected <br /> TVS=table value standards <br /> SGM <br /> 12262018 P:\Projecl FilesQ017-460001 SunriseMining-MayDayMine\M-Water Gualiry\2018\Q4\ <br /> Tbls.1-10-04-May Day Idaho Mine Complex WQ-Resu8s-2018.x Is%SW-1 <br />