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Table 3. 2019 Water Quality Results*-Beaver Pond(BP-1) <br /> May Day Idaho Mine Complex <br /> Sunrise Mining,LLC <br /> All values in mg/L unless otherwise noted <br /> Efate Sate(?Nuking Water Act <br /> 6=2019 MCLO)or SMCLaI <br /> Field Measurements <br /> Temperature °C 71 <br /> Conductivtt /cm 147 <br /> H SU 685 6-85 <br /> Flow cfs Pond <br /> Lab Results <br /> Alkalinity,Bicarbonate 500 <br /> Alkalinity,Carbonate ND <br /> Alkalinity,Hydroxide ND <br /> Alkalinity,Total 500 <br /> Aluminum Dissolved by ICP ND 0 05 to 0 2(2) <br /> Ammonia ND TVS(4) <br /> Antimony Dissolved by ICPMS ND 00060 <br /> Arsenic 200 8 by ICPMS ND 0 01"I <br /> Arsenic Dissolved by ICPMS ND 0 0101 <br /> Banum Dissolved by ICPMS 00431 2'1' <br /> Beryllium Dissolved by ICPMS ND 0 0041'I <br /> Boron 200 7 by ICP ND <br /> Cadmium Dissolved by ICPMS ND 0 005'1i <br /> Calcium Dissolved by ICP 174 <br /> Chloride by IC ND 250r2' <br /> Chromium 200 8 by ICPMS ND 0 1111 <br /> Copper Dissolved by ICPMS 00038 1 3'1"3',1 0'2) <br /> Cyanide,WAD ND 0 2"1 <br /> Fluoride by IC 0 252 4 011, 2 0'2) <br /> Hardness,dis 551 <br /> Iron 200 7 by ICP ND 0 30'2' <br /> Iron Dissolved by ICP ND 0 30'2) <br /> Lead 200 8 by ICPMS ND 0 015111(3) <br /> Lead Dissolved by ICPMS ND 0 015"I'3' <br /> Magnesium Dissolved by ICP 282 0 05(2) <br /> Manganese Dissolved by ICPMS 13 TVS(4) /L <br /> Mercury Dissolved by CVAA ND 0 002t1' <br /> Molybdenum Dissolved by ICPMS 00013 <br /> Nickel Dissolved by ICPMS ND 0 11'i <br /> Nitrate as N by IC 0 051 100I <br /> Nitrate/Nitrite as N by IC Package 00512 100' <br /> Nitrite as N by IC ND 10I <br /> H SU 723 6-85 <br /> Selenium Dissolved by ICPMS ND 0 05i1' <br /> Silver Dissolved by ICPMS ND 0 10(2) <br /> Solids,Total Dissolved TDS 40 <br /> Solids,Total Suspended(TSS) ND <br /> Sulfate by IC 112 250j2i <br /> Thallium Dissolved by ICPMS ND 0 002 <br /> Uranium Dissolved by ICPMS 02 30 /Li'i <br /> Zinc Dissolved by ICPMS NDI TVS(4)1 <br /> Notes <br /> mg/L=milligrams per Liter <br /> °C=degrees Celsius <br /> pS/cm=mcrosiemens per centimeter <br /> S U =standard units <br /> mV=millivolts <br /> cfs=cubic feet per second <br /> ng/L=microgram per Liter <br /> NA=not applicable <br /> ND=not detected <br /> TVS=table value standards <br /> Footnotes <br /> *Single sample for Q1 and Q2 results per DRMS approval letter dated June 21,2019 <br /> (1)SDWA NPDWR MCL=Safe Dnnlung Water Act National Primary Drinking Water Regulations <br /> Maximum Contaminant Level These are legally enforceable standards that apply to public drinking <br /> water systems Primary standards protect pudic health by limiting the levels of contaminants in <br /> (2)SDWA NSDWR SMCL=Safe Drinking Water Act National Secondary Drinking water <br /> Regulations Secondary Maximum Contaminant Level These are non-enforceable guidelines <br /> regulating contaminants that may cause cosmetic effects(such as skin or tooth discoloration)or <br /> (3)Treatments Technique(TT) A required process intended to reduce the level of a contaminants <br /> in drinking water Lead and copper are regulated by a Treatment Technique that requires a system <br /> to control the corrosiveness of their water If more than 10%of tap water samples exceed the <br /> (4)1002-31-Regulation 31-Colorado Water Quality Control Division,Tables III and IV <br /> SGM <br /> 071122019 P tProieot F,Iest2017-460001 SunoseMmmg-MayDayM—N-Water Qua1eyt20I% <br /> Tbls 1-i&Qt-Q2-May Day Naive Mme Cowie,WO-Results-20196P-1 <br />