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Memo to Dan Hernandez <br /> HawksNest East Landslide <br /> page 3 <br /> Some change has occurred recently which has impacted the quantity and pathway of the flow of <br /> groundwater locally. My examination of the area immediately adjacent to the landslide mass did <br /> not discern any obvious changed condition. At the West 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:\COALVAP\Hawkslid.wpd <br /> JP/jp <br /> ,I <br />