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• • DELTA SAND AND GRAVEL, CO. PIT #1 - AMENDMENT M.L.R.B. PERMIT # M-77-D2D OCTOBER 1999 Exhibit D MINING PLAN Unless specifically discussed below the methods described in the 1980 and 1997 mining plans and methods will remain unchanged. Existing sloping, grading and shaping plans will apply to the new area since it is similar to the area now in the permit. We currently have well permits on each existing lake area. we will file a well permit for the new lake area prior to commencing mining on that area. This amendment adds 10.00 acres f on the north side of the existing permit area. Review of Map Exhibit C(revieod 10-99) shows the location and relationship of this added area and the existing permit boundary. The setbacks from the property lines and river will be consistent with those approved at this time. On the east, and south sides the a 25 foot mining setback will be maintained, while along the river we will setback 50 feet from the river bank. As mining ends on the Black property south of the new area we will begin to strip the southern end of this area. Mining will begin by excavating a hole along the south side until a dewatering pump can be installed. This area will be expanded until the bottom of the gravel is reached creating the floor of the lake. Mining will the progress out from this point to the north around Loughrey's house. As was found on the existing mine area very little topsoil exists on the site. This area has been inundated with flood water over the years so little topsoil is left. Any we encounter will be stockpiles along the perimeter of the site for use in reclamation. Mining will progress from south to north across this parcel until all the gravel is removed. Mining will then move to the west parcel as described in the 1997 amendment. We have been approached by the natural gas company about eventually removing the 2 inch line that separates the three properties. If this is done it would be practical to remove the lake separations creating one large lake. There are a couple of inherent problems with this; one is the conflict that may result between landowners over sharing the use of the entire lake; the other is the property line delineations if a conflict arises in the future. We are currently working with Black's and Loughrey's to see if these issues can be overcome. If we can reach agree- ments between the landowners and remove the gasline we will mine the separations using the methods described in our permit. Map Exhibit F(ravieod 10-99) contains an inset picture of how the slopes would look with the separations removed. We will file a Techni- cal Revision prior to removing the separators, but felt notifying 5