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Purpose and Overview • In late 1992, under the leadership of new company president Carl ("Bud") Herskind, Castle began an exploratory core drilling program to determine whether the Pikeview mining operation could be totally redesigned. After extensive analysis of the core samples and other field work, Castle determined that the mining plan could be altered to facilitate the community desired enhanced reclamation- Castle then presented its conclusions to the MRAC. Castle's proposed approach to quarry operations would make mining and advanced reclamation techniques increasingly compatible. In fact Castle's proposal, in lazge measure, achieves the Scaz Commission goal of replacing reserves in undisturbed areas with increased mining in already disturbed areas. The MRAC agreed with Castle's approach. Castle's conceptual operation plan was then presented to a joint meeting of the Colorado Springs City Council and El Paso Commissioners. The concepts were well received. The Colorado Springs City Council and the El Paso County Commissioners each passed resolutions supporting the concepts presented to them. Copies of the resolutions are included at the end of this exhibit. The City Council and County Commissioners encouraged development of the actual • revised plan. Revised plan design work then began- The resulting plan is presented in this application. The main areas in which the proposed plan modifies the existing plan are:' 1. Affected Land Boundary. The affected land boundary in the southwestern and northwestern corners of the permit area is extensively altered to remove approximately 25 acres of unaffected land that would have been affected under the existing permit. This change directly addresses visual impact mitigation by leaving highly visible land unmined. 2. New Sequencing. New phase delineation is employed, driven by reclamation concerns. The new phasing will facilitate more concurrent reclamation. 3. Increased Mining of Less Visible Atready Disturbed Areas. To replace reserves lost through alteration of the affected land boundary, an area at the base of the main quarry back wall will be deeply excavated and then backfilled with waste produced through limestone processing. The reclamation topography will be very similar to that in the current plan. The net • 'This revision ie intended to replace ell previous amendments end moat technical revisions for Chia operation. Many baseline exhibits included in previous aubmittale have been updated to ensure that there ie o0 wafusion. This plan, if approved, will bemme the reg~ilatory basis for the permit. Pikeview l]uarry Amendment Page 3