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• ~ EXHIBIT D MINING PLAN Section 1 -Description of Methods Western Mobile Northern, Inc., doing business as Lafarge, currently operates aready-mix concrete batch plant and public sale sand and gravel stockpile on the west side of St. Louis Avenue (also known as Larimer County Road 13) immediately north of the Big Thompson River (see Exhibit C). This parcel of land is owned by Flatiron Companies. On the east side of St. Louis Avenue, an existing sand and gravel mine, called the Brose Pit, owned by Flatiron Companies and operated by Western Mobile, is immediately north of the proposed new pit which is located on property owned by Robert Reichert. Western Mobile Northern, Inc. (hereafter known as Lafarge) proposes to mine sand and gravel from both these locations in an operation to be known as the Loveland Pit. This work will proceed in three phases removing a total of approximately 700,000 tons of sand and gravel. This will be done at rate of 65,000 to 100,000 tons per year, resulting in a complete time span of 9-13 years for completion of mining and reclamation. The methods used for this operation will be consistent with dry, open pit mining. Phase 1, on the Reichert Property, will be dewatered into the adjacent pond (created by previous mining activities by others). Resource will be transported across St. Louis Avenue and stockpiled on the west side. An entrance will be built on the Reichert side, adjacent to the proposed pit, immediately across St. Louis from an existing entrance on the Flatiron side. Overburden will be stripped and stockpiled on Reichert's property to the south of the pit, and will be used for reclaim of the Phase 1 pit. Mining will proceed from north to south. The small size of the pit (less than 6 acres) makes mining this area in phases impractical. The whole pit area will be stripped and mined more or less in one stage. During Phase 1, the concrete batch plant and public sale occurring on the west side of St. Louis Avenue will continue as in the existing condition. No change in traffic volume is expected. Phase 1 mining will be reclaimed during phases 2 and 3. Phase 1 mining is expected to take 2-3 years to complete. In Phase 2, mining will move to the Flatiron Companies' property west of St. Louis Avenue. During Phase 2, roughly the north half of the pit will be mined, proceeding, again, north to south. Overburden and resource stockpiles will be condensed into the remaining space south of the pit and north of the concrete batch plant, which will continue to operate as during Phase 1. A dewatering trench will be dug around the outside perimeter of the pit area, possibly extending into the remainder of the pit area that will be Phase 3, at least where the pit is parallel to an existing pond (created by previous mining activity by others). Water may be pumped into this pond as needed. Again, the pit area is small, about 5 acres, so Phase 2 will likely be mined in a single stage. Phase 2 is expected to take 3-4 years to complete mining. Reclamation of Phase 2 will commence after completion of Phase 3 mining.