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3. Groundwater <br />Ground water is expected to be encountered within five feet of the surface. This based on drilling <br />conducted on site. Pit dewatering will be necessary throughout the life of the operation. This <br />dewatering will involve the installation of dewatering trenches around the pit floor, and a pit <br />pump. The pit pump will sit at least two feet below the active pit floor, and will pump to the <br />appropriate sediment pond. This sediment pond will discharge into the existing natural drainage <br />channels on site or directly into wetlands. This sequence of controls will ensure that ground <br />water that is discharged from the site is clean. <br />Two test wells were installed on the GVP property east of the Tomichi Pit in 2001 as part of <br />investigation by WestWater Associates (WWA) into quality and quantity of the water within the <br />alluvial aquifer passing through the area. This is the same alluvial aquifer as that present at <br />Tomichi. The WWA report made the following conclusions. <br />1) Based on geophysics, sampling, construction and testing of these two test wells, we conclude <br />there is significant potential for water production from the Tomichi Creek alluvial aquifer for <br />the proposed development <br />2) Larger diameter, properly designed, constructed, and developed production wells at these <br />two sites will be capable of production rates of 350 - 600 gpm. <br />3) A significant area of development exist for additional wells to be drilled within the <br />development. These well locations, if necessary or desired, should be designated prior to <br />final platting of the property, in order to protect the sites for construction and minimize <br />potential for future contamination. <br />4) Water chemistry from samples analyzed from the two test wells indicate the water quality is <br />very good and acceptable for direct potable consumption. Minor hardness and potentially <br />trace elements of iron and manganese are not expected to be a problem, however, they are <br />easily treatable. <br />5) The Tomichi Creek alluvium beneath this property has major potential for future water <br />production. Water within the aquifer below a depth of 50 feet is relatively safe and protected <br />Tomichi Pit, December 2013 G -5 <br />