2003-08-22_REVISION - M1974004 - Laserfiche WebLink

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EXHIBIT L Reclamation Cost Estimate for Amendment Area The current reclamation bond for the Specification Aggregates Quarry was reviewed and increased in August 2002 to $1,056,073.00. The following calculation of reclamation costs only deals with the two amendment areas; the 60.9-acre parcel on the south and the 10.9-acre parcel to the north. The 10.9-acre parcel to the north will not involve any mining, only the placement of excess overburden and revegetation of overburden material. For the portion of the 60.9-acre parcel that will be mined, no costs haven been assigned to the placement of growth media on the benches. This is because of the concurrent reclamation that occurs at the quarry. Once a new bench is opened up and mining has moved some 150 to 200 feet away from the bench, growth media is placed on the bench and bench face. This material is dumped in place and dozed to the final 1:1 slope angle. The benches are typically seeded in the fall prior to winter and spring moisture. The costs of placing the growth media aze included with the normal day-to-day operating costs, therefore, only the costs associated with the revegetation are shown in the accompanying table. The estimated costs presented do include the cost of placing the growth media on the pit floor and the existing stockpile areas upon completion of mining, as these are not included in the normal day-to-day operating costs of the mine. The 10.9-acre pazcel of land is owned by Lafarge and currently zoned Commercial development. In order to improve the development characteristics of this parcel, Lafarge is planning to place excess overburden fill on this land in order to create a larger planaz area. The overburden fill will be placed during the nonnal course of mining. The costs associated with the transport and placement of the fill is included in the normal day-to-day operating costs of the mine. For this reason, only the costs of revegetation are included in the reclamation cost estimate present below. Total In-Place Material Quantities Material Type Extractable aggregate as of 5/31/2003 Loose Overburden Weathered Overburden Cubic Yards Factor 61,698,734 2.39 2,035,557 1.50 2,202,471 2.39 In-Place Tons 147,459,974 3,053,336 5,263,906 Total Material in Ultimate Pit Reclamation Areas 65,936,762 155,777,216 Area Disturbed Acreage Reclamation Quantity (cubic yards) Pit Benches 100 1,673,608 (19.4 yds3 per linear ft) Pit Floor 55 133,100 (1.5-foot depth) Stockpile Area 87 150,040 (1.5-foot depth) Parcel 2 11 Max. 500,000 (placed during mining) Excess overburden and weather material will be sold during the 35 to 40 year life of the quarry. Specifrca(ion Aggregates OMG 112 Permit Amendment -20-