2004-08-19_REVISION - M2003037 (2)

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on the southeast portion of the permit area and will be daylighted to allow the reclaimed pit to drain to the natural slope and ultimately to the Uncompahgre River. Phase 13 will removed and the pit will be daylighted to the natural slope in the area of the old Metcalf Pit. The slopes which aze left in Phases 12 and 13 are the only slopes throughout mining which will be mined at a 3H:1 V slope. This will be done in order to minimize the amount of work required for reclamation at the end of the minelife. Note that the Bean house which is in the southeast comer of the permit area next to Phase 12 will remain after mining; there will not be any impact on the stmcture due to mining. The mining of the entire permitted area is expected to last for 32 years and will mine approximately 13.7 million tons of gravel from 180.27 acres. As seen on Map C-2, a natural berm will be left during mining on the eastern boundary of the pit in order to visually screen the mining operation from the east, as well as contain any rain events. Along the north, west and south edges of the mining boundary, a 8 foot topsoil berm will be created for a visual screen around the remainder of the pit. Mining of the Phases will be sequenced such that a maximum of six Phases will be active while Stages A and B are being mined, and a maximum of three Phases during Stage C. While one Phase is being mined, the next Phase will be stripped of topsoil and overburden and the Phase which has been previously mined will be reclaimed with the overburden and topsoil from the Phase which is currently being mined. This will reduce material handling as well as reduce the maximum azea to be reclaimed. Fines from the crushing and screening operations will be salvaged and will also be used in reclamation. The expected mining life for each of the Phases is included below in Table D-2. A more detailed description can be found in section six of the mining plan. Haldorson Sand and Gravel Mine 12