2008-04-15_REVISION - M1980244 (351)

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• A map depicting the various physical boundaries of the facilities outlined above is included with the reclamation cost estimate. The reclamation summary table addresses each of the facilities and related cost items. The cost summary table, back-up tables, and the most important engineering calculations and assumptions to develop the cost information are part of a spreadsheet model developed for CC&V by Ellis Environmental Engineering, Inc. (Ellis). It should be noted that acreages depicted for the various facilities may not match the table of "Operating Disturbance Areas" provided elsewhere due to the following reasons: (1) the reclamation cost estimate takes a "holistic" view of the boundaries between facilities where the final reclamation demarcation lines are not definite but rather blend from one area to another and (2) reclamation grading, slope reduction, and contouring oftentimes results in a facility encroaching outside its operational footprint, resulting in a slightly larger affected area. The general approach for cost estimating involved calculating the areas and volumes for a particular facility using either direct measurements from ACAD drawings, constructing cross-sections before and after reclamation, measuring from aerial photos using a polar planimeter, or simple computations involving lengths, widths, and heights. Using the volumes and areas determined as above, earthmoving and revegetation equipment were • selected based on productivities developed for the specific project involved utilizing such resources as the Caterpillar Performance Handbook, time study information from Ellis files, and engineering judgment, where appropriate. For most facilities the basic outline of reclamation involves the following sequential steps: (1) grading, slope reduction, re-contouring with dozers or scrapers; (2) replacing growth medium to a depth of approximately six inches; (3) preparing a seed-bed by scarifying or ripping; (4) revegetating consisting of fertilizing, seeding, and mulching; and (5) planting trees and shrubs on north- and east-facing slopes. Certain deviations from this basic approach exist for facilities such as building footprints where only minor grading and "touch-up" will be required once demolition has taken place. Other facilities, such as the approximate 2H:1 V slopes of the Main Cresson backfilled areas, will require special treatment-helicopter seeding due to the marginal accessibility for conventional revegetation equipment. CC&V is considering submitting periodic financial warranty updates to the OMLR and incrementally bonding for disturbances for each year as well as the unreleased portions of disturbance from previous years. This is consistent with the incremental bonding approach previously utilized by CC&V and accepted by the OMLR, and consistent with • Cripple Creek & Victor Gold Mining Company Cresson Project Mine Life Extension 12-2