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lVlemo to Dan Hernandez <br />HawksNest East Landslide <br />page 3 <br />Some chance has occurred recently which has impacted the quantity and pathway of the flow of <br />groundwater locally. Ivly examination of the area immediately adjacent to the landslide mass did <br />not discern any obvious changed condition. At the Nest Elk Mine ,approximately five miles to <br />the southwest, monitoring has discerned significant groundwater impacts related to subsidence <br />above underground workings. Springs have been changed in flow rate and relocated down slope. <br />Zones of micro and macro fracturing generated by mechanical disturbance of bedrock above <br />subsiding workings have rechanneled groundwater flow. The Sanborn Creek mine has mined in <br />areas adjacent to and beneath the landslide mass. The possibility exists that mining-related <br />ground subsidence may have modified the pathways and quantity of groundwater in this vicinity. <br />It may be informative to review the spring monitoring results for springs in this vicinity to <br />discern whether any conclusions regarding potential impacts to the groundwater regime could be <br />completed. <br />cc: Dave Berry <br />Erica Crosby <br />Jim McArdle <br />doc: M:\COALUAP\Hawkslid.wpd <br />JP/J P <br />