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The total annual consumptive uses associated with the mining of the amendment sites <br />are as follows: <br />Evaporation from 1 acre 2.88 AF <br />Moisture retained in product: 14.7 AF <br />Dust Control: 2.0 AF <br />Total 19.6 AF <br />Replacement Water <br />The replacement of consumptive uses will be accounted for in the Substitute Water <br />Supply Plan (SWSP) that is administered by the State Engineer. An April 22, 2008 <br />letter submitted to the State Engineer's Office requested a temporary SWSP for the <br />amendment sites and is included with this Exhibit G. This approval will be issued for a <br />period of two years and then added into the overall combined SWSP for all of <br />Aggregate's sites. The following one or combination of sources may be utilized to <br />provide the necessary replacement water for the site during the first year of operations: <br />Aggregate received 2.5 shares of the Whitney Ditch that is dedicated to this <br />amended location. A detailed consumptive use analysis was performed for this <br />specific site and 37.3 acre-feet of water would be available to cover the <br />depletions at this site <br />295 acre-feet of effluent from the City of Westminster in the form of a perpetual <br />lease of which 19.94 acre-feet dedicated to the Teti Pit augmentation plan. <br />Therefore a remaining amount of 275 acre-feet is available for replacement <br />purposes. <br />• 10.5 acre-feet of effluent from City of Thornton <br />• 30 acre-feet from Centennial <br />Surrounding Water Rights <br />Exhibit G-1 shows the permitted wells within one half mile of the site. Well permit data <br />was used to locate the surrounding wells identified on Exhibit G-1. Although there may <br />be other wells in the area, they are not registered and permitted with the State <br />Engineer's Office. The well permit information and adjudicated water right information <br />are included in Exhibit G-2 and Exhibit G-3, respectively. <br />Current operations at Riverview Resource are conducted under gravel pit well permit <br />No. 62555-F. As required by the State Engineer's Office, the amendment properties will <br />be incorporated through a new gravel pit well permit. <br />In accordance with the existing groundwater management and monitoring plan, monthly <br />groundwater level measurements have been taken at thirteen (13) monitoring wells <br />River Resource <br />Amendment to Permit M1999098 112C <br />Page G3 of G37