2014-11-14_PERMIT FILE - M2014043 (3)

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Albert Frei & Sons, Inc. Page 2 Hatchery Pit Permit # M- 2014 -043 features have an impact on the current groundwater conditions and the flow of it across, around and thru the permit area. The location of the Bull Seep and Thornton's slurry wall will limit the amount of ground water shadowing along the west side of the mine. The Bill Seep will recharge the groundwater and the mounding behind the slurry wall on the Thornton site will keep the groundwater elevations constant on this site. The backfilling along the entire north side may have already limited water flow thru this area and is forcing the water to backup on this site. That may be why there is a constant flow of water thru the lateral drain that runs along the north side and along the base of the hill. This may also explain why the water elevation of the old gravel mine lake appears to be higher. On the other hand if it has restricted flow thru that site it has not has a significant impact to the east. Most of the existing lateral ditches and small ponds will be removed as mining progresses. They now serve to direct the seepage water and surface waters around the property and back to the western drainage. The existing ditches will be rerouted to more direct routes and new ones will be installed around the mined areas to preserve the historic flow of the water. On the north they will be directed into the existing lake so the water returns to the system. On the south a lateral ditch will be built along the south side of the slurry wall so water can be diverted back to the Bull Seep drainage. This ditch will also act as a surface drain for groundwater that may backup along the slurry wall in that area. Groundwater Monitoring Data Analysis As the data is collected, it will be recorded in a spread sheet and graphed to establish the baseline data that can be used to determine what if any impacts the slurry walls are having on the groundwater table. Once the 1 year of data is collected, we can determine what the trigger point elevations are to determine what actions are needed. Data collection will continue on a quarterly basis until the site is reclaimed. Baselines and Trigger Points The baselines for each well will be determined by taking the high and low elevations of each well from the data collected the first year. The proposed trigger points will be determined to be elevations that are greater than two (2) foot above the highest 2