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GOLORADO LEGACY LAND <br /> 12150 E.Briarwood Ave.Suite 135,Centennial,CO 80112 <br /> T.(303)862-3928 <br /> October 21,2021 <br /> Colorado Department of Public Health and Environment <br /> Water Quality Control Division/WQCD-B2-CAS OCT 2 Z�z, <br /> Compliance Assurance Section 0 WSION OF � <br /> Attention: Eric Mink Al�IfJ%/ CLAMATIO <br /> 4300 Cherry Creek Drive South N6AN"$,4itT y y <br /> Denver,CO 80246-1530 <br /> Subject: August 2021 SW-AWD and SW-BPL Surface Monitoring Data for Sampling Stations, <br /> Schwartzwalder Mine,Paragraph 26,WQCD Order Number:10 100601-1,Junel,2010, <br /> Schwartzwalder Mine,Golden,Colorado <br /> Dear Mr.Mink: <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 August 2021 at the Schwartzwalder Mine,monitoring <br /> station SW-BPL. Review of the data indicates that the total and dissolved uranium concentrations at SW-BPL <br /> were below 30 µg/L.Ralston Creek was dry at monitoring station SW-AWD. <br /> If you have any questions,please don't hesitate to contact me. <br /> Sincerely, <br /> y — A <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> Jim@ColoradoLegacy.Land <br /> Distribution List: <br /> Dan Arnold,Denver Water, 1 electronic copy via weblink,Daniel.Arnold@DenverWater.ore <br /> Eric Mink,CDPHE,1 electronic copy via weblink, Eric.Mink@state.co.us <br /> Amy Eschberger,DRMS,1 electronic copy via weblink and 1 hard copy via FedEx, <br /> amy.eschberEer@state.co.us <br /> Billy Ray,Ensero Solutions, 1 electronic copy,bray@ensero.com <br /> Brad Wyant,City of Arvada, 1 electronic copy,bwyant@arvada.ore <br /> Evelyn Rhodes,City of Arvada, 1 electronic copy,erhodes@arvada.ore <br /> PAGE 1 OF 2 <br />