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elevation caused by the expanded mining and associated pumping at the Evans <br />#2 pit. (See attached boring logs from 2007 by Kleinfelder). <br />• Mitigation of groundwater impacts by pumping discharge water from the Evans <br />#2 Pit to the Excelsior Ditch for use by Southwest Farms, Inc. was an <br />appropriate mitigation in 2012. <br />The Evans #2 pit has continued to rapidly expand (unabated and unchecked) to an <br />approximate size of 90 plus acres and a depth of 34 plus feet without any mitigation <br />of the above concerns since 2006. The water level in the mine pit is approximately 34 <br />feet below the ground surface. In September 2008 the average groundwater level <br />below Southwest Farms, Inc. property was about 8 feet below the ground surface and <br />is currently (04/18/14 10:30 AM) 18 plus feet below ground level. Therefore, the pit <br />dewatering activities are causing a drawdown on the order of 10 feet at the active <br />wells. The lateral extent of influence in the groundwater in sand and gravel in <br />alluvial soils for a vertical drawdown of 34 plus feet is on the order of 10 feet. The <br />extent of impact to the groundwater below Southwest Farms, Inc. from the mining <br />operations needs to be identified and appropriately mitigated. As stated in previous <br />letters it is important that Evans #2 preform a hydrologic analyses to identify these <br />impacts and to mitigate impacts to the groundwater levels at Southwest Farms, Inc. <br />as part of this mining permit amendment. <br />Please contact me at (719) 240 -2575 regarding any questions or concerns you may <br />have. <br />Sincerely, <br />John Sliman <br />Cc: John Paul Ary Fremont Paving and Ready Mix <br />Cc: Robert Huzjak RJH Consultants <br />Cc: Chad McShane Robinson Water and O'Dorsio <br />