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COLORADO LEGACY LAND <br /> 4601 DTC Boulevard,Suite 120,Denver, CO 80237 <br /> T. (303)862-3928 <br /> June 25,2020 REca " <br /> Mr.Michael Cunningham and Ms.ALchberger <br /> Colorado Division of Reclamation,Mining,and Safety JUN 2 (p20 <br /> Department of Natural Resources DIMON OF RECL kfATION <br /> 1313 Sherman Street,Room 21S MJNJNGAND SAj.,-Ty <br /> Denver,CO 80203 <br /> x5mwl m� 7 <br /> Subject: First Quarter 2020 Sampling Results, <br /> Schwartzwalder Mine,Golden Colorado, <br /> Mine Land Reclamation Permit No.M-1977-300. <br /> Dear Mr.Cunningham and Ms.Eschberger: <br /> The first quarter sampling event at the Schwartzwalder Mine was conducted by Ensero Solutions Inc.(Ensero) <br /> field staff on March 3 to March 10,2020. <br /> • Surface Water Data: There are thirteen quarterly surface water(SW) sampling locations.Figure 1 <br /> shows the location of each surface water sample locations along Ralston Creek.Table 1a summarizes <br /> surface water field parameters.Table lb summarizes the analytical data results.The analytical <br /> laboratory data report and the chain of custody are attached to this report.A copy of the electronic <br /> data deliverable (EDD) excel file for these samples are included in this submittal. <br /> • Groundwater Data:There are twenty-four quarterly groundwater monitoring well (MW)sampling <br /> locations.Figure 2 shows the location of each MW.Table 2a summarizes groundwater field <br /> parameters.Table 2b summarizes the analytical data results.The analytical laboratory data report and <br /> the chain of custody are attached to this report.A copy of the EDD excel file for these samples are <br /> included in this submittal. <br /> • Mine Pool Elevations:Table 3 summarize the mine pool elevations for the quarter. <br /> If you have any questions regarding this letter,please don't hesitate to contact me. <br /> Sincerely, <br /> y <br /> A. <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> Iim@ColoradoLegacy.Land <br /> cc: <br /> Paul Newman-CLL,Managing Director,Paul@coloradolegac, .Iy and <br /> Eric Williams-CLL,Managing Director,eric@coloradolegacy.land <br /> Billy Ray-Ensero Solutions Inc,Site Manager,bray@ensero.com <br /> PAGE 1 OF 12 <br />