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TVS=table value standards <br /> Footnotes: <br /> •La Plata River flow taken from Hesperus Gage(LAPHESCO). <br /> (1)SDWA NPDWR MCL=Safe Drinking Water Act National Primary Drinking Water Regulations Maximum Contaminant Level. These are legally <br /> enforceable standards that apply to public drinking water systems. Primary standards protect public health by limiting the levels of contaminants in <br /> drinking water. <br /> (2)SDWA NSDWR SMCL=Safe Drinking Water Act National Secondary Drinking water Regulations Secondary Maximum Contaminant Level. These <br /> are non-enforceable guidelines regulating contaminants that may cause cosmetic effects(such as skin or tooth discoloration)or aesthetic effects(such as <br /> taste,odor,or color)in drinking water. EPA recommends secondary standards to water systems but does not require systems to comply. <br /> (3)Treatments Technique(TT). A required process intended to reduce the level of a contaminants in drinking water. Lead and copper are regulated by a <br /> Treatment Technique that requires a system to control the corrosiveness of their water. If more than 10%of tap water samples exceed the Action Level, <br /> water systems must take additional steps to treat the water. <br /> (4)1002-31-Regulation 31-Colorado Water Quality Control Division,Tables III and IV. <br /> SGM P:\Project Files 12017-460.001 Sunrise Mining-May Day Mine\M-Water Quality\ <br /> 01/15/2018 Tbls.1-10-May Day Idaho Mine Complex WQ-Results-2017xIsxBP-1 <br />