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1.0 INTRODUCTION <br />The Stroh Pit mine plan includes two mining areas, the west pit and the east pit. <br />The west pit is approximately 35 acres and the east pit is 15 acres. The project <br />will mine gravel below the natural water table by utilizing conventional dry mining <br />techniques. Dry mining within each pit will be achieved by construction a <br />dewatering trench around the toe of the excavation slope. The trench is then <br />pumped to a sediment pond. The sediment pond is designed as a water quality <br />feature which will allow sediment to settle out of suspension before water is <br />allowed to gravity drain to the river. <br />In the west pit, the reclamation plan will leave a 28.4 acre lake and a portion of <br />backfilled land south of the lake. In the east pit, the reclamation plan will leave a <br />10.5 acre lake and a portion of backfilled land southwest of the lake. <br />The reclamation plan will not construct a hydraulic barrier or earthen liner to <br />prevent the inflow of groundwater to the reclaimed pits. Instead, groundwater will <br />be allowed to flow freely into reclaimed the pits or lakes. <br />This analysis will look at the existing local groundwater system, the effects of <br />dewatering during mining on the local water table and finally, the effects of the <br />reclamation lakes on the local water table. <br />Stroh Pit <br />Groundwater Analysis Report <br />1 of 8 <br />