2006-09-13_REVISION - M1983102 - Laserfiche WebLink

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Exhibit C -PRE MINING MAP RECEIVED Revised adding new area. Map attached SEP 132006 Division of Reclamation, Exhibit C-1 -MINING PLAN MAP Mining and Safety Revised adding new area. Map attached Exhibit D MINING PLAN Unless specifically discussed below the methods described and approved in the original permit applications, mining and reclamation plans will remain unchanged. The current bond is $34,640 and a new reclamation cost estimate is presented in Exhibit L on page 13 of this application. The following text explains the changes to the mining plan as proposed in this amendment. There are no changes to the mining method as approved in the 1995 Amendment. The primary reason for this amendment is to allow mining on the new parcel we are adding and to change the final reclamation plan from rangeland to Industrial/Commercial. In addition, we are removing all reference to a phased operation since the area left to be mined is rather small. This new area covers 16.42 Acres ± and a topsoil area of 3.27 acres was added on the south end of the existing mine area. We expect mining to move from the existing mine area into the new eastern parcel in 2 to 3 years. As mining enters this area we will use the same method of removing material from the working face as noted in the existing permit. Basically the material is mined using loaders to remove material from the face and haul it to stockpiles near the processing equipment. A new combination settling pond/stormwater retention pond complex will be constructed on the northern side of the existing mining area. The approximate location is shown on Map Exhibit C- 1. The floor of the mine will be graded and shaped so all stormwater that collects on the disturbed area will be directed to this pond so it can be treated prior to release. The pond will be constructed by making a depression in the weathered claystone bedrock to collect, store and treat the stormwater and for wash water to be used at the processing operation. This pond is part of the requirements we have placed in the stormwater management plan prepared for this mine. When mining ends the pond will be retained and modified for stormwater management on the industrial/commercial area. As we move into the new area we will establish the 25 foot mining setback line from the permit lines and begin to strip enough area for 2 years of mining. The topsoil material will be salvages and stockpiled on the existing mine floor or on the setbacks for use in reclamation. The approximate location of the topsoil storage berms are shown on the Mining Plan Map. As mining moves into the new area, the existing near vertical, mine face will advance to the east across the area. On the north and south ends of the area the slopes will be mined to their final rate of 2h to lv as mining progresses, leaving only resoiling and 3