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COLORADO LEGACY LAND <br /> 4601 DTC Boulevard,Suite 130,Denver,CO 80237 RECEIVED <br /> T.(303)862-3928 <br /> JUL 16 2018 <br /> IY <br /> ul 12,2018 <br /> DIVISION OF RECLAMATION <br /> MINING AND SAFETY <br /> Mr.Michael Cunningham <br /> Division of Reclamation,Mining,and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street,Room 215 <br /> Denver,CO 80203 <br /> Subject: Schwartzwalder Mine,Permit No.M-1977-300,Water Quality Data and Mine Pool Level <br /> Measurements for May 2018 <br /> Dear Mr.Cunningham: <br /> Enclosed lease find month] water quality monitoring results and daily mine water level measurements for <br /> P Y q ty g Y <br /> the month of May 2018. This submittal represents y tta the continuation of routine monthly reporting of water <br /> quality monitoring results and daily mine pool elevations. A review of the May 2018 data indicates that <br /> uranium concentrations at SW-BPL were all below 30 µg/L. Furthermore,arsenic was only detected once at <br /> SW-BPL at a concentration of 0.2 µg/L which happens to be the Method Detection Limit.The treatment plant <br /> operated full time throughout May.However,the mine pool rose during May due to the increased creek flow <br /> through the site.During the last few days of the month the water level dropped again as the creek's peak <br /> flow subsided. <br /> If you have any questions regarding this deliverable,please do not hesitate to contact me. <br /> Sincerely, <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> Tr r'i�--Dv °rora.Iracy.Land <br /> Dan Arnold,Denver Water,1 electronic copy,Daniel.Arnold@DenverWater.org <br /> Eric Mink,CDPHE, 1 electronic copy and 1 hard copy via FedEx,Eric.Mink@state.co.us <br /> Michael Cunningham,DRMS,1 electronic copy and 1 hard copy via FedEx, <br /> michaela.cunningham@state.co.us <br /> Lori Simpson,AWE,1 electronic copy,Isimpson@alexcoresource.com <br /> Billy Ray,AWE,1 electronic copy,bray@alexcoresource.com <br /> PAGE 1 OF 1 <br />