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" ,COLORADo LEGACY LAND <br /> 4601 DTC Boulevard,Suite 120,Denver,CO 80237 <br /> T.(303)862-3928 <br /> December 4,2020 <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 215 <br /> Denver,CO 80203 <br /> Subject: Third 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 third quarter sampling event at the Schwartzwalder Mine was conducted by Ensero Solutions Inc.(Ensero) <br /> field staff on July 22 to July 28,2020. <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 fifteen quarterly groundwater monitoring well(MW)locations.Figure <br /> 2 shows the location of each MW.Table 2a summarizes groundwater field parameters.Table 2b <br /> summarizes the analytical data results.The analytical laboratory data report and the chain of custody <br /> are attached to this report.A copy of the EDD excel file for these samples are 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 /> y61" A. ' <br /> Jim Harrington,Managing Director <br /> COLORADO LEGACY LAND <br /> jim@ColoradoLegacy.Land <br /> cc: <br /> Paul Newman-CLL,Managing Director,pawl@coloradolegacy.land <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 />