2011-10-31_REVISION - M1976009HR (7)

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Menzer Quarry Corrective Action Amendment Exhibit D October 2011 Page 3 Mining Plan It was recognized that to reach the stream from the quarry side it would be necessary to take an additional shot to lower the quarry edge down to the approved mining limit. Once that was done, access could be achieved from the quarry side to clean the stream channel and clean the slope above the channel to avoid further deposition of rock into the stream channel by means of creep. An alternative plan was to enter the stream channel from the canyon road. Although a short road could have been created from the canyon road to the stream, that seemed to be a needless additional disturbance. A few trees and a good deal of thick shrubbery would need to be removed to build the short road and those could not be replaced easily in reclaiming the temporary road. Furthermore, that approach did nothing about removing the spill rock on the slope above the stream and within the original affected land boundary. That rock could still creep down the slope and into the stream channel. It was considered important to deal with that rock as well as the rock in the stream channel if the rehabilitation was to be done properly. That approach to correcting the problem, although physically easier, was rejected as being less desirable with regard to the final product. The immediate problem would be fixed, but the long term problem of rock creep would remain. "MINING PLAN:" Recognizing that this plan is prepared after the fact, it really is not a mining plan change but rather a description of the activities that were done that would have been considered mining. Of course, the purpose of the corrective action was to rehabilitate the area affected by the spillage. That is essentially a reclamation action. But, as described above, to get to that point some mining activity needed to occur. This mining activity is consistent with the approved mining plan and does not alter phasing or have other impacts on the overall mining plan. It was clear from the outset that without taking another lift (shot) from the quarry edge above the spill there was little hope that the stream corridor could ever be reached except from the canyon road to the east. That had already been rejected as intolerably damaging to the canyon bottom. It was already known that the mining limit identified in the permit was one lift down the spill slope. As the only way to reach the stream was to lower the slope, that additional lift needed to be taken. The shot was taken using a technique that limited impact to the quarry edge so additional rock was not added to the spill. However, the rock on the edge was sufficiently fractured that it could be removed. Removal of this rock was with a track hoe working along the edge and pulling the rock on the edge back into the quarry. A dozer could have been used, but that would likely add at least a little rock to the spill and that rock would need to be hauled back to the top, a needless action. Using the track hoe was slower, but produced a better result. Once the rock was moved back away from the edge it could be loaded into trucks with a front -end loader and hauled to the processing plant to be turned into product. It took a good deal of time to remove the rock down to the mining limit which was also the bottom of the final shot depth. Once that was finished, a dozer began to work its way down the spill rock slope diagonally to produce a path for the track hoe. Once the dozer reached the outer edge of the spill slope, it turned and went down diagonally in the opposite direction until the track hoe could reach the stream course on the north end of the spill area. The track hoe was then able to move down the path and along the