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oaozt <br />changes in non-project related local conditions including precipitation, river flows, and <br />land use (including the adjacent Wattenberg Lake mine). The report will present results <br />of the evaluation and identify any potential impacts associated with the change. <br />Mitigation of potential impacts caused by changing groundwater elevations will be <br />addressed based upon the specific location and nature of the impact. If, due to <br />dewatering, installation of the slurry wall, or other mining or reclamation activities, <br />changes in groundwater elevation may create adverse impacts to adjacent properties, <br />the adjacent property owners will be notified and the impacts will be addressed to the <br />satisfaction of the Division. <br />Mitigation Plan <br />If dewatering (or installation of the slurry wall) at the Wattenberg West site creates <br />injuries to surrounding wells, the applicant will take all necessary actions to remedy the <br />injuries. If water levels are dropping in adjacent wells, due to installation of the slurry <br />wall or dewatering at the Wattenberg West site, such that well owners' historic water <br />production may be injured, the applicant will begin to implement one or more of the <br />following measures. However, if the well has not been put to beneficial use prior to <br />mining, or does not have the legal right to operate, the applicant should have no <br />responsibility to provide mitigation. Mitigation measures may include, but are not limited <br />to: <br />Banks and Gesso, LLC <br />Modify existing wells to operate under lower groundwater conditions. This would <br />include re-drilling existing wells to deeper depths or lowering the pumps. All work <br />would be at the applicant's expense with the exception of replacing equipment <br />that was non-functional prior to mining. <br />2. If existing wells cannot be repaired, the applicant will drill a new well for the <br />owner to replace the damaged well. The new well will produce water of the same <br />quantity and quality to support historic use. <br />3. Provide an alternative source of water to support the historic well water use. <br />Additionally, if it is determined that installation of the slurry wall creates mounding or <br />shadowing impacts to surrounding water resources, the applicant will take appropriate <br />corrective action. Impacts would trigger mitigation measures that may include, but are <br />not limited to: <br />1. Pumping from mounding areas or mine dewatering operations to recharge ponds <br />in shadowing areas. <br />2. Installing surface or underground drain systems to transport groundwater from <br />mounding areas to shadowing areas. <br />3. Diverting surface water flows to recharge ponds in shadowing areas. <br />Asphalt Paving Company October 11, 2005 <br />Wattenberg West Sand and Gravel Mine Page 16 <br /> <br />