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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 mglL unless otherwise noted <br />Analyte <br />Date <br />Safe Drinking Water Act <br />MCLMorSMCLM <br />2/812018 I 4!2712018 <br />Field Measurements <br />Te rature 'C <br />Dryl <br />10 4 <br />Conductivity Srcm) <br />Dryl <br />las <br />H SU <br />Dryl <br />7711 1 <br />1 6 85 <br />Flow cfs - <br />Dryl <br />40 <br />Lab Results <br />Alkalinity,Bicarbonate <br />Dry <br />31 <br />Alkalinity,Carbonate <br />D <br />NO <br />AlkalinityHydroxide <br />Dry <br />ND <br />Alkalinity,Total <br />❑ <br />310 <br />Aluminum Dissolved by ICP <br />Dry <br />ND <br />0.05 to 0.211 <br />Ammonia <br />Dry <br />ND <br />TVS "I <br />Antimony Dissolved by ICPMS <br />Dry <br />ND <br />o.owl11 <br />Arsenic 200 8 ICPMS <br />Dry <br />ND <br />0 01M <br />Arsenic Dissolved by ICPMS <br />Dry <br />ND <br />001"I <br />Barium Dissolved by ICPMS <br />Dry <br />00342 <br />211E <br />Beryllium Dissolved by ICPMS <br />Dry <br />ND <br />0.004j1� <br />Boron 200.2 by ICP <br />Dry <br />ND <br />Cadmium Dissolved by ICPMS <br />❑ <br />ND <br />000501 <br />Calcium Dissolved tyy ICP <br />Dry <br />17.2 <br />Chloride by IC <br />Dry <br />NO <br />250171 <br />Chromium 200 8 by ICPMS <br />Dry <br />ND <br />0.10E <br />Copper Dissolved ICPMS <br />Dry <br />00052 <br />1,1701, 1.0121 <br />Cyanide, WAD <br />Dry <br />NO <br />0 2111 <br />Fluoride by IC <br />Dry <br />0.237 <br />4.0111 2-011 <br />Hardness d s <br />Dry <br />52.1 <br />Iron 200 2 by ICP <br />Dry <br />ND <br />0.301�1 <br />Iron Dissolved by ICP <br />Dry <br />ND <br />0.3011 <br />Lead 200.6 by ICPMS <br />Dry <br />ND <br />0.0151,3E <br />Lead Dissolved by ICPMS <br />Dry <br />NO <br />0.01500P <br />Magnesium Dissolved :CP <br />D <br />222 <br />0.05121 <br />Manganese Dissolved jU ICPMS <br />Dry <br />20 <br />TVS 1`t /L <br />Mercury Dissolved by CVAA <br />Dry <br />ND <br />0 002": <br />Molybdenum vissolved by ICPMS <br />Dry <br />00010 <br />Nickel Dissolved by ICPMS <br />Dry <br />00014 <br />o.iM <br />Nitrate as N by IC <br />Dry <br />0.139 <br />10j1E <br />Nitrate/Nitrite as N by IC Packa e <br />Dry <br />0.139 <br />10 <br />Nitrite as N by IC <br />Dry <br />ND <br />111. <br />H Standard Units <br />Dry <br />8 17 <br />6-8.5 <br />Selenium D'ssolved by ICPMS <br />D <br />ND <br />0.0511s <br />Silver Dissolved by ICPMS <br />Dry <br />ND <br />0.1017 <br />Solids. Total Dlsso ved TOS <br />❑ <br />65 a <br />500: <br />Solids Total Suspended (TvS) <br />Dry700 <br />Sulfate by IC <br />Dry <br />149 <br />2501 <br />Thallium Dissolved by ICPMS <br />Dry <br />ND <br />0,002 <br />Uran:um Dissolved by ICPMS <br />Dry <br />C 1 <br />1 30 1011h <br />Zinc 0 ssuved by ICPMS <br />Dryl <br />0.0039 <br />1 TVS14i <br />Notes. <br />mg1L = milligrams per Llter <br />'G = degrees Celsius <br />pS1cm - microsiemens per centimeter <br />S.0 = standard untls <br />MV a millivolts <br />cis = cubic feet per second <br />11911. - mkrogram per Liter <br />NA a not applicable <br />NO a not detected <br />SGM <br />051141201a P Vrole J FiIWN17.460,001 $"iN Mining -May Oxy Mi OW-WiIM CuaMy12016421 <br />TLts.1-10. 01 May Day Idaho Mine C=ple- Wo-RnuW2016 AsxSW-1 <br />