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Banks and Gesso, LLC There are no known off-site wells owned by others located within 600 feet of the mining limits. Wells in the area are shown on Exhibit C-1. Due to the high transmissivity of the alluvial aquifer, off-site wells are not expected to be affected by dewatering at the mine site. A gravel pit located approximately '/<-mile to the west has been dewatering continuously for two years with no apparent or known impact to nearby wells. Four ground water monitoring wells will be installed on the property to establish baseline conditions and to monitor the impact of dewatering. The proposed monitoring well locations are also shown on Exhibit C-1 Runoff From Disturbed Ground Storm water runoff will be directed into either the mine pit or a settling pond at the southern portion of the property. Exhibit C-3 shows the location of the proposed settling pond. A Stormwater Management Plan (SWMP) will be developed and implemented for the property, and a discharge permit will be obtained prior to site disturbance, as required by the Colorado Department of Public Health and Environment (CDPHE). Dewaterino Water Discharge Dewatering water will be transmitted and discharged to the Arkansas River pursuant to an approved Colorado Discharge Permit System (COPS) General Permit for Sand and Gravel Mining and Processing from the Colorado Department of Public Health and Environment (CDPHE). The outfall will be designed to minimize erosion, dissipate the velocity of the flow and spread out the flow so that impacts to the bed, bank and riparian areas of the Arkansas River are minimized. Depending on its final design, the outfall structure may be subject to a Nationwide Permit from the U.S. Army Corps of Engineers. If necessary, the applicant will obtain this permit prior to construction. The general location of the dewatering pipe and outfall are shown on Exhibit C-3. Project Water Requirements The following table summarizes water demand for the proposed operation. St. Barbara Sand and Gravel Mine 03028 Trans Colorado Concrete tg February 19, 2004