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G. <br />Paul Banks and Associates, LLC <br />Dewaterinq <br />The Debeque Sand and Gravel Resource mining areas will be equipped with pumps to <br />allow for dry- mining. Water impacts associated with dry- mining are discussed in Exhibit <br />Wet mining may occur at the site at the operator's election. Wet- mining may be <br />advantageous for preliminary excavation into groundwater- saturated areas, for example. <br />The operator would use excavators next to the working face to produce pit run for <br />standard processing. <br />With the active mine areas dry, a variety of mining equipment will have access to the pit <br />floor. Given only partial dewatering, mining methods will be accordingly adapted to <br />accommodate wet working areas and wet material. Should the pit floor remain wet, an <br />excavator would remain at the pre- mining ground level and progressively work the <br />mining footprint backward. In this scenario, wet pit run would be temporarily placed on <br />the immediately adjacent existing ground surface to allow for moisture to run off and <br />evaporate. After sufficient drying time, a loader would remove pit run materials and the <br />temporary drying areas would then be subject to recovery of aggregates. This <br />progressive, two -stage mining method would be used in circumstances where <br />groundwater pumping is limited due to on- or off -site constraints. <br />Ditch laterals and tailwater channels are maintained under the Exhibit C Mining Plan and <br />may be adjusted or eliminated as appropriate to provide necessary water conveyance. <br />Primary and Secondary Commodities <br />The primary commodities to be mined are sand and gravel. These are expected to be <br />used for construction aggregates. There is no secondary commodity. As a matter of <br />record, asphalt and concrete production may occur on -site (see Exhibit C), but such <br />operations would involve the mining of no additional commodity. <br />Incidental Products <br />There are no incidental products expected from this operation. <br />Explosives <br />Explosives will not be used in this proposed operation. <br />Debeque Sand and Gravel Resource 11019 <br />Oldcastle Southwest Group, Inc. 10 November 2011 <br />