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EIVGEO INCORPORATED Monitoring Well Locations As depicted on Figure 2, the groundwater monitoring well locations listed in the table below have been selected based on providing one upgradient and two downgradient monitoring points with respect to four sedimentation basins planned for the expansion project. The stated groundwater monitoring well purposes are based on an overall northeastward groundwater flow direction. The anticipated groundwater flow direction is based on hand depth to groundwater measurements collected on February 6, 2007, from 8 geotechnical boring piezometers installed in the broad area north of the site and interpolation of ground surface elevations shown on civil drawings prepared by Carlson, Barbee & Gibson. In addition, the planned well screen intervals are based on a general depth to groundwater exhibited in all of the geotechnical piezometers of between 8 to 12 feet below the ground surface (bgs) and a general occurrence of a sandier aquifer matrix from 10 to 30 feet bgs. Total Screen Well ID Depth Interval Seal Depth Groundwater Monitoring Well Purpose (feet bgs) (feet bgs) (feet bgs) MW-1 31 21-31 20 Upgradient area baseline characterization MW-2 31 21-31 20 Downgradient area baseline characterization MW-3 31 1 21-31 1 20 Downgradient area baseline characterization Actual monitoring locations will be based on site-specific conditions, but will be within reasonable limits of the locations shown on Figure 2. For example, the actual locations will be based on consideration of the following: • Located on higher ground so as to minimize the effects from existing agricultural flood irrigation systems and to minimize local interference with surface water infiltration. These locations may then be at the perimeters of planned use areas which happen to be consistent with existing agricultural field layouts. • At locations that are accessible with vehicles. 4943.4.640.01 April 17, 2007 3