2005-07-13_REVISION - M2000016 (28)

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'~ ' ~.~'a'`S'r ~ ~ /u~ 1 ~~5~ ~ rs ~ ~ ,t7 This Exhibit was updated in coniunction with the USR Application. June 23. 2005 EXHIBIT D v YI- 1-ao~-old /mil Mining Plan / .~ General The Riverbend property, MLRB 112 Permit M-2000-016, is a significant co~e~c~a~C~S deposit of sand and gravel located near the South Platte River. Lafargej~+rj}h~p~~~~oc~l, county, and state governments, as well as private industry with aggregate from this ac~i rt°~QY The Riverbend property was initially permitted in 2000 with the Colorado Division of Minerals and Geology and Weld County for sand and gravel extraction and asphalt and concrete batch plant operations. The Weld County Use by Special Review (USR) is permit number 1259. The existing permit area is 237 acres, 120 acres of which will be disturbed by mining. The permit amendment will also incorporate the previously permitted Fort Lupton Pit, MLRB Permit M-1985-088, containing 200 acres. The Ft. Lupton Pit is comprised of the City of Thornton property (Phase 6) and the D & S Mining, Inc. property (Phase 9). The Ft. Lupton Pit was originally permitted as a wet mining operation; the mining method will be amended to de-watering and dry mining, as indicated in this Exhibit. Lafarge intends to amend the Riverbend permits M-2000-016 and USR #1259 to include additional mineable acres, modify the existing mine plan, modify the current reclamation plan, and increase processing capacity at the facility. The amended permit boundary will encompass approximately 1,191 acres, with mining activities anticipated to disturb approximately 860 acres of the site. The remaining un-mined acres will be used for overburden and topsoil stockpiles, offsets from utilities and waterways, and internal road and conveyor access. The amended permit boundazy (the Site) is situated directly north of Weld County Road 6, south of Highway 52, east of Weld County Road 10, immediately west of Highway 85 and adjacent to the South Platte River. The northern limit of the Site is located approximately 1-mile southeast of the City of Fort Lupton. Several existing mining operations are located immediately to the south, north and east of this property. Agricultural uses and low density residential lie to the west. The Site has been drilled during several sampling episodes from 1999 through 2004, and testing has been performed to verify the sand and gravel deposits aze commercially marketable. Based on test results, Lafarge has determined that the overburden will amount to approximately 6.3 million cubic yards. Overburden exists to an average depth of approximately 6 feet over the entire site. Some of this material maybe used for oft=site construction needs; however, all overburden needed for the construction of the liner and final reclamation slopes will remain on-site. The average depth of sand and gravel is 29 feet across the Site and mining at the Site is intended to progress down to the claystone bedrock of the Denver Formation. Ft Luptm Pit OMG f 11 Permit Page ! l oj86