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• YOAST MINE 2005 ANNUAL RECLAMATION REPORT 2005 DISTURBANCE AREA There were an additiona11.2 acres disturbed during 2005. The Yoast mine area was reviewed and revised to accurately portray the categories of activities; the final disturbance boundary revised to match the aerial photography disturbance; permanent roads and ponds were delineated. The total disturbed area has been revised to 846.3 acres. This acreage change is reflected on the CDMG Annual Report Form and is included in the text of the following report. The 2005 Reclamation Map portrays the revised disturbance boundaries. BACKFILLING AND GRADING During 2005, SCC backfilled and graded 119.4 acres as shown on the Yoast Mine 2005 Graded Area Map. TOPSOIL AND SPOIL MONITORING SCC is required by Permit C-94-082 to monitor the salvage, storage, and redistribution of topsoil and spoil handling operations at Yoast Mine. Specific programs include documenting topsoil recovery, verifying soil redistribution thickness, determining final graded spoil suitability, determining topsoil fertility, evaluating plant rooting characteristics, recording the source of replaced topsoil, and completing an annual topsoil balance. The following sections present the topsoil and spoil monitoring • data fox the 2005 calendar year. The results of topsoil/spo$ monitoring fox 2005 are included in the attached Soils Report. • Topsoil Recovery Documentation Topsoil recovery was documented by daily observation by the grading foreman and pit supervisor. This quality control information is used to verify soil salvage estimates predicted from the baseline soil survey, confirm soil map unit types, justify salvage thickness, and evaluate soIl suitability. Addirional soil salvage occurred in a small area near Pond 012 as part of the Slide Mitigation plan. Observations within the mixed brush, sandstone-derived soils indicated very suitable loamy soil was salvaged down to the fractured sandstone bedrock. The thickness of recovered soil was approximately 6" along a rocky ridge. • 2005 Topsoil Replacement Thickness SCC is requited, by Permit C-94-082 and Section 4.06.4(2)(6) of Colorado's Regulations for Coal Mining, to document and record the topsoil replacement thickness fox each reclamation block using a minimum sampling intensity of one hole per five acres. The topsoil replacement thickness information is used to adjust topsoil salvage depths, if necessary, and for bond release purposes. Topsoil replacement depths were sampled during the 2005 field season on a 500 ft. grid within the topsoil replacement area. The average topsoil replacement depth fox the 2005 replacement area was 21.6 inches. See the Soil/Spoil Sample Locations Map and Table 05.6, Yoast Topsoil Depth Samples for further documentation • • Spoil Suitability There were fiBeen (15) randomly located regraded spoil samples collected within the final graded areas during 2005. The samples were analyzed for pH, saturation percentage, electrical conductivity