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Banks and Gesso. LLC <br />Exhibit G -Water Information <br />Overview <br />The Grand River Park Project is an alluvial deposit located within the floodplain of the <br />Colorado River. Based on initial water level measurements, monitoring wells and test <br />pits at the proposed reclamation permit site show an average groundwater elevation 5 <br />feet below the land surface across the site. <br />By its nature, recovery of the alluvial deposit may have effects on surface and <br />subsurface water systems. Based on standard practices, no adverse quantitative or <br />qualitative effects to surface waters are expected to result from the proposed Grand <br />River Park Project. Groundwater effects will be mitigated to prevent adverse impacts. <br />Water Requirements <br />Water demand at the proposed construction materials operation will be generated by (a) <br />worker demands for potable water, (b) dust control, (c) revegetation establishment, (d) <br />process water (e.g., aggregate washing), and (e) augmentation or temporary substitute <br />supplies for depleted waters subject to appropriation. <br />Water demands on the site are estimated to total 47.2 acre-feet per year, given a <br />working season of 240 days maximum. Potable and sanitary uses for an estimated 10 <br />on-site employees will require approximately 0.1 acre-feet per year (33,000 gallons). <br />Dust control and irrigation water for revegetation create a collective annual demand of <br />approximately 10 acre-feet (3,260,000 gallons), accounting for use of approximately <br />10,000 to 15,000 gallons on each working day at the mining site. The dust control and <br />irrigation demands are linked based on operator experience that dust control demand <br />peaks while reclamation is still in early stages and drops off as operations shift to a focus <br />on reclamation; the two water applications generally amount to a steady demand. <br />Process water, assuming a 90% recycle rate, is anticipated to require an input of 30,000 <br />gallons per operating day, or 22.1 acre-feet per year. Finally, depletion of groundwater <br />is subject to further study. Based on exposed groundwater surface at maximum <br />disturbance and anticipated losses, the applicant conservatively estimates an <br />augmentation (or TSSP) requirement of 15 acre-feet per year. <br />Grand River Park Project 05021 <br />Silt Sand & Gravel LLC 17 May 2006 <br />