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!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!A <br />!( <br />!( <br />!( <br />POC-2597 / 645 / 0% <br />POC-1578 / 661 / 0% <br />POC-9422 / 623 / 0% <br />POC-8293 / 603 / 0% <br />POC-15648 / 715 / 0% <br />POC-11647 / 731 / 0% <br />POC-10610 / 654 / 0% <br />POC-5886 / 1100 / 29% <br />POC-61330 / 2610 / 86% <br />POC-31084 / 1180 / 100% <br />POC-131149 / 1330 / 71% <br />POC-161933 / 2160 / 100% <br />POC-141696 / 3030 / 100% <br />POC-121594 / 1720 / 100% <br />NGSW884 / 997 / 0% <br />MT-95-02949 / 1170 / 14% <br />GOSSARD WELL801 / 1030 / 5% <br />Mil k CreekWilson C r e ek JubbCreekTaylorCreekGoodSpringCr eek <br />Co Rd 17 <br />State Hwy 13Co Rd 51Moffat County Rd 180 <br />Co Rd 32 <br />14 <br />27 <br />34 <br />35 <br />26 <br />36 <br />22 <br />36 <br />31 <br />25 <br />23 <br />15 <br />35 <br />24 <br />13 <br />34 <br />31 <br />30 <br />18 <br />19 <br />11 <br />3025 <br />10 12 <br />2627 <br />32 <br />07 <br />16 <br />29 <br />21 <br />32 <br />28 29 <br />33 <br />20 <br />17 <br />09 <br />06030201 05 <br />08 <br />04 <br />4N 93W 4N 92W <br />5N 93W 5N 92W <br />3N 93W 3N 92W <br />M o f f a t C o u n t y <br />Coordinate System:NAD 1983 State Plane,Colorado North Zone, FeetNotes:Sulfate Concentrations compared toDowngradient Well Background UTL = 997 mg/lUTL = Upper Tolerance Limit with 95% ConfidenceStatistics for Permanent Wells NGSW, MT-95-02, and Gossard Well based on sampling from 2015 - 2020 <br />Legend <br />Permanent Well Sample Result (Avg/Max/% Exceeda nce) <br />!(Average Below Background <br />!(Average Above Background <br />Temporary Well Sample Result (Avg/M ax/% E xceedance) <br />!A Average Above Background <br />!A Average Below Background <br />Stream <br />Colowyo Mine Open Pit Extent <br />Ditch <br />Mine Permit Boundary <br />Township <br />Section <br />Pond <br />County Boundary <br />Road <br />Alluvial Valley <br />Figure 11b Colowyo MineTemporary Monitoring Wells Sulfate Statistics(Pre-1994 Background)October 2019 to November 2020Rio Blanco and Moffat Counties, ColoradoFebruary 2021 <br />Designed <br />Drawn <br />Checked <br />Peer Review <br />Project Manager <br />Project Number <br />DE <br />DE <br />MS <br />MF <br />AB <br />60614862 <br />7595 Technology Way, Suite 200Denver, CO 80237, United StatesT +1-303-694-2770 <br />0 2,000 4,0001,000 <br />Scale in Feet <br />µ