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Baselines and Trigger Points <br /> The baselines for each monitoring well will be determined by taking the high and low <br /> groundwater elevations of each well for the first two (2)years of data collected. The proposed <br /> trigger points, based on the established elevations, are 2 feet above the highest elevation and 2 <br /> feet below the lowest elevation measured. <br /> Mitigation <br /> If the groundwater levels in a monitoring well pass its trigger points for more than 3 <br /> months in a row, the operator will investigate to determine causes, and if it is determined that the <br /> operator is responsible for the changes, then the operator will do mitigation as necessary. The <br /> operator will notify the Division of the trigger investigations and any subsequent mitigation. <br /> A neighbor complaint could also be a "trigger". Examples of possible issues are: water <br /> well levels low, flooding fields, and vegetation suffering. L.G. Everist would investigate to <br /> determine causes and mitigate if necessary with the mitigation measures outlined below. <br /> Mitigation measures that could be implemented if necessary (not necessarily in the order <br /> listed) include: <br /> • Construction of a pipe/drain to equalize groundwater levels. Such a drain or pipe could be <br /> constructed along the sides of the mine or between lined cells, where it would convey <br /> water from the up gradient side of the operation to the down gradient side. <br /> • Release of water in ditches/laterals. Water could be released in ditches/laterals to provide <br /> irrigation, increase recharge, and/or raise groundwater levels. <br /> • Well improvements. Affected water wells could be deepened or modified to increase <br /> yield. Alternatively, new alluvial wells could be constructed to provide a new water <br /> supply. <br /> The exact mitigation measure or combination of measures would be determined based on <br /> additional investigations and consultations with the affected party. If it is determined that the <br /> operator has caused water issues for surrounding landowners the operator (L.G. Everist, Inc.) <br /> will pay the costs for implementation and maintenance of mitigation measures needed. <br /> 2 <br />