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The 15 acre disturbance limitation in Item 4 would make it impossible to effectively produce gravel, clay and road -base materials on the amended Smith Pit plan. There are now 16.5 acres in the Zone No. 1 mining area north of CR No. 4, most of which has either been disturbed, or will be disturbed, in the existing clay mining operation. (Item 5) Moffat County's plan is to continue mining clay (and some gravel) north of CR No. 4, and to mine only sand and gravel on the south side of CR No. 4 until the existing clay pit has been mined -out, and a new clay pit can be developed on the south side of CR No. 4. Moffat County will reclaim all 16.5 acres of the Zone No. l land north of CR No. 4 after the clay pit has been mined -out and the stockpiles are depleted — that might take 7 to 10 years — or longer! (Item 6) The nature of the gravel, sand, clay and bedrock on the Smith Pit Amendment No. 1 is discussed below (see heading: "Mining Zones".) (Item 7) The significant man-made structures within 200 feet of the Smith Pit Amendment No. 1 are discussed below (see heading: "Man -Made Improvements"). Mining Zones: Moffat County is actively mining clay and gravel in the Zone No. 1 area north of County Road No. 4 as shown in the original "Conversion No. I Map " marked Exhibit C; this information is also detailed in Exhibit C-2. Amendment No. 1 will clarify the intended depth of the clay mining activity in Zone No. 1 (Exhibits C-1 & C-4), and in the Amended Mining Plan Map shown on Exhibit C-5. The gravel layers in Zone No. 1 (north of CR No. 4) were expected to be 10 to 12 feet thick and they usually existed in that range. After we mined -out most of the gravel resources, we discovered a five-foot thick layer of decomposed sandstone lying on claystone bedrock. (These deposits are typical of the local members of the Green River and Wasatch Formations.) The Smith Pit gravels are very sandy, and they make poor road base material. But, by experimentation, we have determined that a good road base could be produced by adding approximately 10 percent claystone to the crushed rock and sand matrix. In May of 2008, Moffat County drilled exploration holes south of CR No. 4 to a depth of 30 feet, and we learned that the claystone zones also exist in the proposed mining area south of CR No. 4 (see Exhibit C-5). There are two important elements that must be added to the mining and reclamation plans for mining clay beneath the floor of the mined -out gravel zones: 1. The floor of the clay mining pits could, in some cases, be 30 to 50 feet below the surface of the original ground; Smith Fit No. 20 Amendment No. I — Moffat County Road Department