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COLORADO LEGACY LAND <br /> 4601 DTC Boulevard,Suite 120,Denver,CO 80237 <br /> T.(303)862-3928 <br /> September OS,2020 <br /> Mr.Michael Cunningham and Ms.Amy Eschberger <br /> Colorado Division of Reclamation,Mining,and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street,Room 2 1 S 9D <br /> Denver,CO 80203 " LL <br /> Sj 15 2020 <br /> Subject: Second Quarter 2020 Sampling Results, <br /> Schwartzwalder Mine,Golden Colorado, ;�DSn�CTY <br /> Mine Land Reclamation Permit No.M-1977-300. <br /> Dear Mr.Cunningham and Ms.Eschberger: <br /> The second quarter sampling event at the Schwartzwalder Mine was conducted by Ensero Solutions Inc. <br /> (Ensero)field staff on June 2 to June 17,2020. <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 la 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 do not hesitate to contact me. <br /> Sincerely, <br /> y 141. <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> Iin&ColoradoLegacy.Land <br /> cc: <br /> Paul Newman-CLL,Managing Director,pauIPcoloradolegacy.land <br /> Eric Williams-CLL,Managing Director,ericCcDcoloradolegacy.land <br /> Billy Ray-Ensero Solutions Inc,Site Manager,brayftensero.com <br /> PAGE 1 OF 12 <br />