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<br /> <br />1 <br />t EXHIBIT B <br />' WATER RESOURCES INFORMATION <br />Introduction <br />' Pursuant to the rules and regulations for Exhibit G as set forth <br />by the Colorado Mined Land Reclamation Board, this report <br />addresses groundwater, surface water and floodplain issues. The <br />' proposed mining operation for the Ready Mixed Concrete Company <br />will use wet mining techniques in which the resource is extracted <br />using a dragline. This area along the South Platte River has <br />' gravel deposits that vary in depth from 10 feet to 30 feet. The <br />minimal amount of overburden make it an ideal mining site with <br />regard to impacts on water. <br />Groundwater <br />The project site is located along the South Platte River near <br />' Brighton, Colorado (See Figure 1). This reach of the South <br />Platte is fed by an alluvial aquifer called the Valley Fill <br />Aquifer. It is basically a sand and gravel deposit, (the <br />' resource which is being mined), that varies in thickness from 10 <br />feet to 30 feet in depth. It is a shallow aquifer that generally <br />shows the groundwater table to be located at a depth of c^ feet to <br />5 feet below existing ground. <br />' The Arapahoe and Laramie-Fox Hills Aquifers underlie the proposed <br />project. However, these aquifers are separated from the Valley <br />Fill Aquifer by a layer of clay shale bedrock and will not be <br />affected. <br />There are numerous permitted wells located in the surrounding <br />area (See Figure 2). A tabulated listing of these wells was <br />obtained from the State Engineers office. The study area chosen <br />was limited to all wells within a two mile radius of the project <br />' site. As shown in Figure 2, no wells were located on the west <br />side of the South Platte River for this study. The river acts as <br />a hydrologic barrier to any draw down that might occur on the <br />west side of the Valley Fill Rquifer. <br />R total of 79 wells located near the project site in Sections 12, <br />13 and 14 are listed in the State Engineer's Tabulation. These <br />' are wells that are permitted by the State Engineer. However, <br />there is no simple record keeping mechanism to indicate how many <br />of these wells have been constructed. Further examination of <br />' both the U. S. G. S. quad maps and a U. S. G. S. Open File Report on <br />wells in the area indicate there are perhaps 16 wells. <br />Therefore, the true number of wells in existence probably lies <br />somewhere between. <br />1 <br />~a_ t <br />