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are not adequately understood. Normal household use water well casings <br /> in the area are much smaller. With a 36" casing, it almost seems they <br /> rectified the problem by installing an underground cistern. This drying up <br /> of the well was not an anticipated impact of mining activities,but it <br /> happened. <br /> i. From that same hearing L.G. Everist's water expert used a report <br /> by Wright Water Engineering. That report said the ditch crossing <br /> CR 18 near the north entrance of the mine was silted in and sealed <br /> from leaking water on the south side of the road, but like a leaky <br /> bathtub full of holes on the north side of the road. I don't believe <br /> CR 18 is a magical dividing line for something like this. I believe <br /> it is further evidence that even the experts do not understand <br /> groundwater flow impacts of mining activities and slurry walls <br /> acting as underground dams with mounding and shadow effects. <br /> 4. I believe the floodplain has been altered as a direct result of L. G. Everist mining <br /> activities in the area. Post-mining elevations are higher than pre-mining <br /> elevations along the west side of the South Platte River in places. I believe this <br /> has had a causal relationship to increased flooding on at least one property I am <br /> aware of. Will detailed pre-mining elevations be recorded on the amended areas? <br /> Is there now a review of elevations to ensure this does not happen? <br /> I know a lot of these comments are written as questions. This is intentional to spur <br /> thought and hopefully encourage a thorough review and discussion of the amendment to <br /> the permit, so all stakeholders are considered. I am also available for further discussion <br /> or clarification if needed. <br /> Respectfully, <br /> 72144 <br /> 4 CGS <br /> a <br /> Michael Bachofer <br /> Cc: Lynn Shults, L.G. Everist, Inc. 7321 East 88th Ave. #200 Henderson, CO 80640 <br />