2003-03-31_REVISION - M1977344 (2)

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Division of Minerals and Geology March 31, 2003 Page ] 6 of 17 come from the final cuts of the East Quarry and the overbwden from Cuts 19 through 22, The area remaining to complete the fill as of 1/1/03 is approximately 22 acres. The average depth for this area is approximately 85 feet. The total volume required to fill this area for final reclamation is approximately 3.0 million cubic yards. In the worst case scenario, the west wall would be drilled and blasted for slope reduction and the excess material would be used to fill in the void. The area required to accomplish this would be approximately 33 acres. The estimated distance for haulage of fill material is expected to be 1000 feet, and topsoil haulage is anticipated to be approximately 3,500 feet. Area 3 -The third and final area is that of the plant. The plant consists of machinery and structures that are predominantly steel and concrete. The plant site consists of two separate areas: Plant 2, which is the old plant, is currently being demolished and Plant 3 where the new plant currently exists. There are portions of the Plant 2 complex (cement silos, conveyor belts, and some buildings) that will remain and continue to be used for production. Following are the estimates of steel, reinforced concrete, and lean concrete for the two areas: Plant 2 Quanti Cu. Yds. Tons Lean Concrete (no rebar) 18,000 33,300 Foundation Concrete w/rebar 16,000 30,784 Superstructure Concrete w/rebar Silos wall concrete w/ rebar 18,000 Structwal Steel 2000 Other steel 1,500 Plant 3 Lean Concrete (no rebar) 9,300 Foundation Concrete w/rebar av . 12" thick 24,740 47,560 Superstructure Concrete w/rebar 15,224 36,964 Silos wall concrete w/ rebar 9,000 18,150 Structwal Steel 3914 Other steel 4,400 In the worst case scenario all equipment, conveyor belts, etc. will be removed and transferred or sold. Steel structures will be dismantled and sold for scrap and concrete structwes including foundations will be broken up and land-filled at the site. The concrete will then be covered and the area graded and contowed for drainage, then topsoiled and seeded. Based on past Holcim experience, it is estimated that the cost of demolishing a plant of this size is approximately $0.025/ton for all items removed (salvaged and ]and-filled). Exhibit S-Permanent Man-made Structures Item No. 34 DMG: Your Exhibit S states that there are no significant valuable or permanent man-made structures within 200 feet of the affected land. Your figure C-2 Mining Plan Map shows a natural gas pipeline crossing mining cuts 13, 14, 16 and 18. (Add the name of the owners of the pipeline Holcim Response to Amendment Adequacy Aeview.doc