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COLORADO LEGACY LAND <br /> 335 W.Hampden Ave.,Suite 935 Englewood,CO 80110 <br /> January 17,2023 <br /> Colorado Department of Public Health and Environment RECEIVED <br /> Water Quality Control Division/WQCD-B2-CAS <br /> Compliance Assurance Section JAN 2 4 205 <br /> Attention:Jacob Dyste <br /> 4300 Cherry Creek Drive South DIVISION OF RECLAMATION, <br /> Denver,CO 80246-1530 MINING &SAFETY-MINERALS <br /> Subject: December 2022 SW-AWD and SW-BPL Surface Monitoring Data for Sampling Stations, <br /> Schwartzwalder Mine,Paragraph 26,WQCD Order Number: IO 100601-1,June1,2010, <br /> Schwartzwalder Mine,Golden,Colorado <br /> Dear Mr.Dyste: <br /> Pursuant to Paragraph 26 of the above referenced Order, please find enclosed data reports from contract <br /> laboratories as received by Ensero Solutions,Inc working on behalf of Colorado Legacy Land.This data originates <br /> from the analysis of the surface water sample collected in December 2022 at the Schwartzwalder Mine, <br /> monitoring station SW-AWD and SW-BPL. Review of the data indicates that the total and dissolved uranium <br /> concentrations at SW-AWD and SW-BPL were below 30 µg/L. <br /> If you have any questions,please don't hesitate to contact me. <br /> Sincerely, <br /> y <br /> — A_ d� . <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> Jim(tColorado Legacy.Land <br /> Distribution List: <br /> Dan Arnold,Denver Water,1 electronic copy via weblink, Daniel.Arnold((bDenverWater.org <br /> Jacob Dyste,CDPHE, 1 electronic copy via weblink,Jacob.Dyste@state.co us <br /> Michael Cunningham,Senior Environmental Protection Specialist,michaela.cuiminghamOc state.co us <br /> Elizabeth Busby,Ensero Solutions, 1 electronic copy,ebusbv@ensero.com <br /> JoAnne Ary,Ensero Solutions, 1 electronic copy,JaryOc ensero.com <br /> Brad Wyant,City of Arvada, 1 electronic copy,bvvyant(tarvada.org <br /> Evelyn Rhodes,City of Arvada,1 electronic copy,erhodesOarvada.org <br /> PAGE 1 OF 2 <br />