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MEMO <br /> District Board,Leadville Sanitation District <br /> Union Milling Permit M1990-057(Version 4) <br /> Job No.:1119.2e <br /> August 24,2021 <br /> Page 4 of 4 <br /> TABLE 5-2: ANAL.YTE REPORT(FORM) <br /> Analyte Detection Limit' Observed Value2 XRF Baseline] <br /> (mg/L) (mg/L) (PPm) <br /> Antimony Sb <br /> Aluminum(AI) " <br /> Arsenic(As) <br /> Barium(Ba) " <br /> Beryllium(Be) <br /> Boron B " <br /> Cadmium(Cd) <br /> Chromium Cr " <br /> Cobalt(Co) " <br /> Copper Cu <br /> Cyanide[Free)(CN) " <br /> Fluoride F <br /> Iron Fe " <br /> Lead(Pb) <br /> Lithium li " <br /> Mercury(Hg) " <br /> Manganese Mn " <br /> Molybdenum(Mo) <br /> Nkkel Ni " <br /> Total Nitrate+Nitrite " <br /> Selenium Se " <br /> Silver ) <br /> Zinc(Zn) , <br /> The Mill proposes a new lined Tailings Storage Facility(TSF). If the TSF fails,which has been seen at other facilities, <br /> metals could be leaked into the groundwater and into the collection system resulting in significant issues with <br /> wastewater effluent compliance for the District. <br /> Lastly,the Mill is proposing to use a lift station for the sanitary sewer waste.This is in direct conflict with the District <br /> Rules and Regulations as the District does not allow lift stations.Another concern is low level metals from employees <br /> washing their hands as this wastewater would enter the District's sanitary sewer collection system and flow to the <br /> WWTF. <br /> This summarizes our review of the Mill permit and objections based on our understanding of the proposed Mill and <br /> operations. <br /> Signed: _ Copies to: Steve Bain — Welborn Sullivan Meck & <br /> Tooley,P.C. <br /> Cooper Best,P.E. <br /> Senior Project Manager Joseph Fattor—District Attorney <br />