2004-06-16_REVISION - M1998052 (3)

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We committed to locating potential permanent fuel storage above the 100-year flood flow. Alpine Rock's calculations indicated that the 100-year flood flow would be 3.26-feet above the normal flow. Normal flow is defined as base flow, which is the flow during times other than spring runoff or precipitation events. As an added margin of safety, we will locate all permanent fuel storage at least 3.26-feet above the elevation of the normal/ordinary high water mark on the stream bank, perpendicular from the stream to the fuel storage location. Such permanent storage tanks would be bermed and lined with a UV resistant membrane and the capacity of the containment area will be sized to accommodate 1.5 times the capacity of the tanks. Other materials, such as lubricants, and ant'rfreeze, would, 'rf stored on site, also be located inside the containment area. Also, as required, we would appropriately sign the area stating that the fuel valve is to be manned at all times during fueling. Alternatively, we reserve the right to service the fuel needs of the site with a fuel tanker, or other mobile tank, both of which would be parked only temporarily on site, and therefore not contained. 3. Waters of the United States One of the things you specifically looked at during your inspection of the site on June 1, 2004 was whether or not wetlands exist in the proposed area of affected land. You did look at this, and, as discussed in your Inspection Report, determined that, indeed, no wetlands exist within the 42- acres to be mined, and that therefore you see no need to require a wetlands delineation of the project. We still realize that it will be necessary to contact the Corps of Engineers with regard to the installation of culvert(s) to faalitate another Access Road to the site. 4. Fugitive Dust We will investigate the specific air permit requirements for this operation and will contact the APCD as necessary. 5. Reclamation Costs We will reclaim the site in two stages. The total mined area is approximately 42 acres and we will reclaim the first hall of the site (21 acres) when we are approximately one-half done, and reclaim the remaining 21 acres when we are completely done. The average height and maximum length of the "forward" working faces at any time throughout the operation are estimated to be 30-feet tall and 600-feet long. The average height and maximum length of side working faces are estimated to be 10-feet tall and 2,600-feet long. The time required 3