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As can be seen the highest anticipated change occurs in piezometer 6 in the <br />south east corner of the proposed mining operation and most near the Swartz <br />residence. Despite this change, the ground water surface is anticipated to stay <br />well below (approximately 11 feet) the basement floor elevation of the home <br />following drain and Compacted Clay Liner construction. <br />If a change in groundwater elevation greater than two feet beyond the seasonal <br />baseline plus the anticipated (modeled) change in ground water elevations <br />occurs, then an intermediate second measurement will be taken 45 days after <br />the initial reading. If the reading is still outside the mitigation trigger and an <br />impact is imminent (i.e. a flooded basement or field), mitigation will be performed. <br />Step 4 - Mitigation Alternatives <br />Mitigations to a raised or lowered water table will be completed by the City under <br />the following conditions. <br />1. Monitoring data demonstrates that a change in ground water surface <br />elevation has occurred beyond that anticipated through Compacted Clay <br />Liner and drain installation and as a result of seasonal variation. <br />2. The change in ground water elevation has caused an impact to adjacent <br />water supply, an impact is imminent, or has caused an impact to <br />basement or field as a result of high groundwater elevation. <br />Lowering of water table <br />If mitigation from a lowered water table is required, one of the two following <br />actions will be completed by the City. <br />1. Alternative 1 - The City will provide the well owner with water, until the <br />water level returns to normal. <br />2. Alternative 2 - The City will drill the affected party's well deeper to restore <br />well production to pre project conditions. <br />Raising of Water Table <br />If mitigation to lower the water table is required, one of the two following actions <br />will be completed by the City. <br />1. Alternative 1 - A well and pump will be installed and operated to locally <br />reduce the water elevations in the aquifer. <br />2. Alternative 2 - An additional subsurface drain may be installed to reduce the <br />water surface elevations in the vicinity of the impacted structure or field. <br />Commitment <br />Operator shall commit to the mitigation measures above regardless of whether <br />the mitigation triggers are the result of installing a clay liner on Reservoir #2 or <br />Reservoir #4 <br /> <br /> <br /> <br />