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EXHIBIT G <br /> Water Information <br /> The information in this Section is intended to satisfy the requirements outlined in Section 6.4.7 of the Colorado Mined <br /> Land Reclamation Board's Construction Material Rules and Regulations. <br /> (1) If the operation is not expected to directly affect surface or groundwater systems, a statement of that expectation <br /> shall be submitted. <br /> This site is directly adjacent to the Brantner Ditch, Brighton Ditch, Brighton Return Ditch, and the South Platte River. <br /> The Brantner Ditch,the Brighton Ditch, and South Platte River will not be disturbed because of the mining and <br /> reclamation activities on the site. The Brighton Return Ditch will be utilized for the discharge of dewatering water from <br /> the South Area. This has the collateral benefit of mitigating groundwater drawdowns and associated impacts to wells <br /> south and west of the South Area. <br /> (2) If the operation is expected to directly affect surface or groundwater systems, the OperatorlApplicant shall: <br /> (a)Locate on the map(in Exhibit C)tributary watercourses, wells, springs, stock water ponds, reservoirs, and <br /> ditches on the affected land and on adjacent lands where such structures may be affected by the proposed <br /> mining operations. <br /> Please see Exhibit C Pre-Mining Maps for the location of all tributary water courses,wells,springs, stock water <br /> ponds, reservoirs, and ditches on the affected land and on adjacent lands where such structures may be <br /> affected by the proposed mining operations <br /> (b) Identify all known aquifers <br /> The Tucson site is underlain by two relevant aquifers: <br /> • the Upper Arapahoe Aquifer <br /> o described in: George VanSlyke, et. al. 1988, Geologic Structure, Sandstone/Siltstone Isolith, <br /> and Location of Non-Tributary Ground Water for the Arapahoe Aquifer, Denver Basin, <br /> Colorado. Denver Basin Atlas No.3, DBA-3. Colorado Division of Water Resources, Office of <br /> the State Engineer. <br /> • the South Platte River Alluvial Aquifer <br /> o described in: Tucson South Resource Ground Water Modeling Study on the Hydrologic Effects <br /> of Mining at Page 3, (Tetra Tech RMC 2004). <br /> (c)Submit a brief statement or plan showing how water from de-watering operations or from runoff from <br /> disturbed areas,piled material and operating surfaces will be managed to protect against pollution of either <br /> surface or groundwater(and, where applicable, control pollution in a manner that is consistent with water quality <br /> discharge permits), both during and after the operation. <br /> The slurry wall for the West Area will be installed concurrent with mining. The slurry wall for the East Area will <br /> be installed prior to mining. The South Area will be dewatered; hence all water will flow into the mine area.All <br /> dewatering water will be monitored under the discharge permit(see below). Consequently, contaminants of <br /> concern inside the mine will not impact the surrounding alluvial aquifer. The interbedded siltstone and claystone <br /> of the Arapahoe Aquifer and associated very low vertical hydraulic conductivity isolates the Arapahoe aquifer <br /> from mine operations and potential releases. Monitoring wells have been installed around the West, East and <br /> South Areas;therefore, in the unlikely event of a release, possible impacts to groundwater can be monitored. <br /> Aggregate Industries Tucson South Resource <br /> Permit#M-2004-044 112 Permit Amendment <br /> Page G-1 <br />