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Walker, Byron From: Jerry Nettleton [JNettleton@peabodyenergy.com] Sent: Tuesday, December 05, 2006 3:10 PM To: Walker, Byron Subject: Twentymile Coal Company - Foidel Creek Mine (C-82-056), PR06-07 -Responses to Remaining Adequacy Items Attachments: PR06-07 Revised pages 2.05-3 and 13.doc; CURRENT.TOC1106.doc; EXHIBIT 2 Slip Sheet.doc ®~ ®I PR06-07 Revised CURRENT.TOC1106 EXHIBIT 2 Slip pages 2.05-3 a... .doc (122 KB) Sheet.doc (24 K... Byron - As a follow-up to my 12109106 e-mail on the remaining PR06-07 adequacy items: 1) Correction of the Permit Area acreage figures for consistency - There is a discrepancy between the acreage figures shown in your 12/01/06 e-mail, as carried forward in the CDRMS system, and the figures we have carried forward in both the PAP documentation and our Annual Reclamation Report. For the Permitted Area and Disturbed Area acreages, the discrepancy is less than 10 percent, however, the Affected Area figure in your 12/01/06 e-mail is significantly greater that the figure we are carrying, and appears to be incorrect, based on the acreage within the permit area that has not been affected and the acreages for areas that are outside of the currently permitted area (5-year mine plan, specifically most of the Western Mining District). We have reconciled the current acreage figures presented in the PAP for consistency, and propose the following to address the identified discrepancies: For the Permitted Area, we have the land plat information available electronically from Routt County, and propose to utilize the actual platted acreages to determine the Permitted Area acreage based on Permit Boundaries corresponding to plat boundaries. It may be necessary to adjust our map base layer for consistency with the more accurate land plat information. We will make any necessary adjustments, and create a new base layer. We will overlay the Permit Boundary, mine plan (with angle of draw subsidence limits), and disturbance areas, and then using the outlines of these areas, will use an AutoCAD utility to determine corrected acreages for the Affected and Disturbed areas. The corrected acreage figures and map(s) will be incorporated into the Permit Revision application we anticipate submitting in January for the new Federal Coal Lease that we anticipate will be issued by year-end. This approach has the dual benefits of allowing us to proceed to decision on PR06-07, while correcting all relevant acreages for both the PAP and the 2006 Annual Reclamation Report. 2) Revisions to Maps 1 and 2 to address ownership information, permit boundaries, and revision dates - The referenced maps have been updated and revised to show all recent changes in ownership (based on records form the Routt County Assessor's Office), the permit boundary change approved through TROS-51, and corrected map revision dates. 3) Addition of a new exhibit for ownership information - On review of the current PAP, it 1