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!~ i Explanation of Conditional Use Request The Tucson South Resources Gravel Mining Site is 290+ acres proposed for mining and reclamation by Aggregate Resources Industries-WRC, Inc. (AI). Approval of the Mining and Reclamation Plan ~-t from the Division of Minerals and Geology of the State of Colorado has been submitted, and is J ex ected to be approved in Se tember, 2004. AI is initiating this Conditional Use request to Adams County for san and gravel mining on the property. The property is located north and south of SH7 j on both sides of Tucson Street in Sections 1 and 12 Township 1 S, R67W. The property consists of f County AssessorParcel No.s1571-01-0-00-016,1571-OI-0-00-029,1571-0]-0-00-033,1571-01-0- 00-034,1571-01-0-00-035,1571-01-1-00-002,and 1571-12-0-00-006. Thepropertyislocatedsouth of AI's 132+_ acres existing. Tucson Pit located. at the southeast corner of Tucson Street and 168`h Ave. (Weld County Road #2), where mining is being completed. The existing Tucson Nine was condemned by the City of Thornton and is a slurry wall sealed water storage reservoir. A copy of the Exhibit B- Index Map from the DMG application is copied on the next page for reference to locate the involved properties. # ! The after use of the Tucson South Resources Gravel Mining Site is a Water Storage Reservoir A t a (81+ acres) and an upland/meadow area on the east side of Tucson Sn eet (East Area on Index Map), a Water Storage Reservoir B (65+_ acres) and a large upland/meadow area west of Water Storage E Reservoir B on the west side of Tucson Street (West Area on Index Niap), and an upland/meadow area, farming, or wetlands area on the south side of SH7 (Southwest Area on Index Map). The two t t Water Storage Reservoirs are to be enclosed by one slurry wall, and both will be owned and operated t' by the City of Aurora upon completion of mining and reclamation of each reservoir area. The total time for completion of all minine is expected to take from 10 to 12 vears, and un to another 5 vears ~ t until December 31, 2021 at a maximum to complete all reclamation activities. l The Mining and Reclamation Plan have been submitted to the State ofColorado's Division ofMineral and Geology, and it is anticipated the State's Permit hogs uld be approved around the end of 2004. Some major aspects of the proposal submitted to the State are as tolCows: I I . The first area of minim will be the Water Storage Reservoir A area, designated the East Area i on the Exhibit B-Index Map. AI is requesting of the City of Thornton to allow the existing plant on the Tucson Mine to continue to operate and process mined material from the Water Storage Reservoir A area. The southern 27+ acres of the existine Tucson iVline will be included in the Tucson South Resources Gravel 1VUnmg ite non o t e Water Storage Reservoir A area in order to complete reclamation of this area after the remainder of the +'+ Tucson Vline property is turned over to the City of Thornton. This 27+ acre area is not within i l the existing slurry wall of the Tucson Mine's water storage reservoir. Nor will it be within the proposed slurry wall for Water Storage Reservoirs A and B, that will be owned and operated by the City of Aurora. The 27+ acre silt water pond area, north of proposed Water ' Storage Reservoir A, will be reclaimed as upland/meadow or wetlands area once it is filled with silt material to an elevation sufficient to create either an upland/meadow or wetlands area.