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Table 2. 2018 Water Quality Results - La Plata River - Lower Sampling Point ISW-21 <br />May Day Idaho Mine Complex <br />Sunrise Mining, LLC <br />All values In mglL unless otherwise noted <br />Anslyle <br />Date <br />Safe Drinking Water Acl- <br />MCLIO or SMCLm <br />21912018 1 412772018 <br />Field Measurements <br />Temperature (*Cj <br />1 561 <br />361 <br />Conductivity Slcm) <br />i 2111 <br />H S.U. <br />753 <br />734 1 416-8-5 <br />Flow cls' <br />1 4161 <br />40 <br />Lab Results <br />Alkalinity, Bicarbonate <br />680 <br />34.0 <br />Alkalinity, Carbonate <br />ND <br />ND <br />Alkalinhy,-Hydroxide <br />ND <br />ND <br />Alkalinity, Total <br />680 <br />34.0 <br />Aluminum Dissolved by ICP <br />ND <br />ND <br />0.05 to 0.21' <br />Ammonia <br />ND <br />ND <br />TVs (`) <br />Antimony Dissolved by ICPMS <br />ND <br />ND <br />0.006") <br />Arsenic 200.6 by ICP -MS <br />N01 <br />ND <br />0.0111 <br />Arsenic Dissolved by ICPMS <br />ND <br />ND <br />0.0141 <br />Barium Dissolved by ICPMS <br />0.0715 <br />0.0404 <br />20) <br />Beryllium Dissolved by ICPMS <br />ND <br />ND <br />0.0041) <br />Boron 200.7 by ICP <br />ND <br />ND <br />Cadmium Dissolved by ICPMS <br />ND <br />NDI <br />0.005111 <br />Calcium Dissolved by ICP <br />305 <br />20.3 <br />Chloride by IC <br />ND <br />ND <br />25012) <br />Chromium 200 8 by ICPMS <br />ND <br />ND <br />0.1111 <br />Copper Dissolved by ICPMS <br />O.D018 <br />0.0040 <br />1.3c1N3) 1.012) <br />C anWc WAD <br />ND <br />ND <br />0.2") <br />Fluoride by IC <br />0.224 <br />0.225 <br />4.0117 2.0(2) <br />Hardness dis <br />934 <br />61 2 <br />Iron 200 7 by ICP <br />0 239 <br />0 137 <br />0.3042j <br />Iron Dissolved by ICP <br />ND <br />ND <br />0.3015 <br />Lead 200 8 bX ICPMS <br />0.0011 <br />0.0007 <br />Lead Dissolved by ICPMS <br />ND <br />ND <br />0.015"m" <br />Ma nesium Dissolved bjtICP <br />402 <br />256 <br />0.05(2) <br />Manganese Dissolved by ICPMS <br />07 <br />13 <br />TVS 14) 1L <br />Mercury,Dissolved by CVAA <br />ND <br />ND <br />0.002(') <br />Molybdenum Dissolved by ICPMS <br />00011 <br />0.0009 <br />Nickel Dissolved by ICPMS <br />0.0025 <br />0.0017 <br />0,10) <br />Nitrate as N by IC <br />0.100 <br />0.145 <br />10(1) <br />NitratelNdrite as N by 1C Package <br />0.09961 <br />0.145 <br />1011 <br />Nitrile as N by IC <br />ND <br />ND <br />1(1) <br />H SU <br />778 <br />795 <br />6-8.5 <br />Selenium Dissolved by ICPMS <br />ND <br />ND <br />0.051) <br />S,lver Dissolved by ICPMS <br />ND <br />ND <br />0.1012) <br />Solids Total Dissolved (TDS) <br />850 <br />950 <br />olWs Total Suspended(TSS) <br />NA <br />283 <br />Suffate by IC <br />31.0 <br />192 <br />25CPI <br />Thallium Dissolved by ICPMS <br />ND <br />NO <br />0.0021-1 <br />Uranium Dissolved -by ICPMS <br />031 <br />02 <br />30 rti' <br />Zinc Dissolved by ICPMS <br />1 000241 <br />0.0034 <br />TVs. 4; <br />Notes <br />mg/, = milligrams per Liter <br />'C = degrees Celsius <br />pSrcm = micros emens per centimeter <br />S U = standard units <br />mV millivolts <br />ds = cubic leet per second <br />trgfL - microgram per Liter <br />NA = not appk3ble <br />ND • not detetled <br />TVS k table value standards <br />Footnotes <br />La Plata River flow taken from Hesperus Gaga (LAPHESCO). <br />P V40" Frea11817468801 Bunrye UFWVrlay pay rY.WWWater Ovauy=18%= <br />Uft 1.10. 01,1/8y par Idaho SAM Canpyer W0Aewlr5,2018 doa5W.2 <br />