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1 <br /> ' Amy Eschberger Reference No. 20378105-1-TM-0 <br /> Colorado Division of Reclamation, Mining and Safety February 19,2021 <br /> ' 3.0 SUMMARY <br /> Activities associated with the drilling, installation, development, survey, and permitting of well MW-8 occurred <br /> between November 2020 and February 2021. The well is located side-gradient of the CKD disposal areas to <br /> capture background groundwater conditions at the Site as the DRMS requested in their February 28, 2020 <br /> Inspection Report. MW-8 has been developed twice and the initial groundwater sampling at this location took <br /> ' place on December 14, 2020. The groundwater analytical results will be presented in a future submittal detailing <br /> the Site-wide second semi-annual 2020 groundwater sampling event. MW-8 will be sampled on the same <br /> ' schedule as the other seven Site wells as part of the Holcim Boettcher Quarry groundwater monitoring program. <br /> ' Golder Associates Inc. <br /> 7x'_'e� <br /> Tricia Hall <br /> tStaff Hydrogeologist <br /> ' Sara Harkins Joanna Moreno <br /> Senior Geologist/Geochemist, Project Manager Groundwater Practice Leader, Associate <br /> SH/JM/mp <br /> 1 <br /> Appendices: Figure 1: Site Location Plan <br /> Attachment A: MW-8 Borehole Log <br /> Attachment B: Borehole Water Sample Results <br /> ' Attachment C: Monitoring Well Construction Diagram <br /> Attachment D: Monitoring Well Development Forms <br /> Attachment E: Monitoring Well Construction Permit <br /> https://goiderassociates.sharepoint.com/sites/135208/project files/6 deliverables/techmemos/1-tm-monitoring_well_installation/1-tm-0/20378105-0-tm-a-mw8_monitoring_19ffeb21.dou <br /> t <br /> ' GOLDER 5 <br />