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Mining Plan • Transportation and access corridor; The access road to the quarry is from Allegheny which is a main road through the Oak Valley Ranch subdivision. An amendment to the operation in the early 1980's changed the access route to this path because of the Oak Valley Ranch subdivision being built. The access road as far as the entrance gate at Allegheny is included in the permit (see Figure MP-2). PHASE DELINEATION Current Phase Delineation: Figure MP-1 shows the current phase delineation for the operation. This phase delineation (called "Tracts" on the map) fits quite well with the existing plan, but is entirely inappropriate for the new plan. First, because a significant portion of the land to be mined under the existing plan is being removed from the plan, the existing phases would no longer describe what will happen during the operation. Second, the current phase delineation is a mining plan driven sequence. Under the new plan, which will include the Enhanced Reclamation Plan, the phase delineation must be more descriptive of the different zones in the operation with respect to not only mining but also • reclamation processes. Thud, the current phase delineation is not descriptive of the historical context of the different types of disturbances presently on the site and disturbances that will be created in the future. Therefore, a completely new system of zone description is proposed. New Phase Delineation: Figure MP-2 shows the new "phase" delineation for this operation. The boundaries of the Areas shown on this figure approximately correspond to the Areas shown on the Mining Plan Map (Exhibit C) and the Reclamation Plan Map (Exhibit F), and also some other figures included in this amendment. However, the boundary locations shown on Exhibits C and F are the "official" locations. Boundaries on the figures, because they are diagrammatic, are only approximate. Rather than phases that tend to imply a time sequence, Areas have been used. Calling them Areas is more descriptive. Each Area is defined by a combination of historical, future mining, and reclamation characteristics. Following is a description of each Area. Area SF - The letters SF refer to "Support Facilities." This includes the office, shop, processing plants, product stockpiles, the various roads that connect these functions, and the major part of the drainage and sediment control systems. Major portions of this land have . already been reclaimed, but the remaining disturbed land will probably be in use for the duration of the operation. This Area includes the 20 acre United States Forest Service lease on the south Pikeview Quarry Amendment Exhibit D Page 5