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Mayer Well&Pond Inspection <br /> Platteville,Colorado <br /> Page 3 <br /> In summary, dewatering from the Pit 122 mining operations will likely diminish, but not eliminate, <br /> the pumping capacity of the Mayer irrigation well. It is also anticipated that infiltration from the <br /> Mayer pond will increase as a result of mine dewatering — the magnitude of increased infiltration <br /> cannot be determined from available data. <br /> Varra has indicated it will mitigate substantial pond water losses by either supplying make up water <br /> from its dewatering operations or lining the pond to make water losses insignificant compared to <br /> water inflows. It is recommended that once the pond has completely drained that core samples be <br /> obtained from the pond bottom and subjected to permeability testing. This information would <br /> provide the basis for anticipated mitigation needs. <br /> If you have any questions regarding this letter or attachments, please contact me at 970-590-3807. <br /> Sincerely, <br /> AWES,LLC <br /> Joby L.Adams, P.G. <br /> Principal/Hydrogeologist <br /> AW IES 4809 Four Star Court, Fort Collins, CO 80524 970-590-3807 <br />