2008-09-08_REVISION - C1994082

• Permit No: C1994082
• IBM Index Class Name: REVISION
• Doc Date: 9/8/2008
• Doc Name: Response to Preliminary Adequacy Comments
• From: Seneca Coal Company
• To: DRMS
• Type & Sequence: TR37
• Email Name: DTM
• Media Type: D
• Archive: No

• INSERTION INSTRUCTIONS
YOAST MINE PERMIT C-94082
TECHNICAL REVISION (TR-37)
August 2008
Vol. 6, TAB 13, Facilities
• Tab 13, Facilities, Table of Contents - replace TOC pages i - iv
• Attachment 13-3A, Pond 010 As-Built Report, Part I Postmine Storage Capacity Addendum - replace pages 13-
3A.1-4 and 13-3A.1-5
• Attachment 134A, As-Built Report Sediment Structure Pond 011 - replace the introduction page (dated 03/08)
• Attachment 13-4A, As-Built Report Sediment Structure Pond 011, Part I Postmine Storage Capacity Addendum -
replace Appendix 13-4A.1A, pages 13-4A.1-A.1 -13-4A.1-A.13 (10-year, 24-hour event SEDCAD demonstration)
• Attachment 13-4A, As-Built Report Sediment Structure Pond 011, Part I Postmine Storage Capacity Addendum -
replace Appendix 13-4A.1A, pages 13-4A.1-B.1 -13-4A.1-B.13 (25-year, 24-hour storm event SEDCAD
demonstration)
Vol. 6A. TAB 13. Facilities
• Attachment 13-12, Drainage and Sediment Control Plan - replace attachment Table of Contents and text pages
• Attachment 13-12, Drainage and Sediment Control Plan - replace existing Figure 13-12.3, Yoast Mine Postmining
• Channel Designs (Sheet 1, 2 and 3 on pages 13-12.19 -13-12.21)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.1, Sediment Pond Design SEDCAD4
Results - replace appendix Table of Contents (page 13-12.1-i)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.1, Sediment Pond Design SEDCAD4
Results - insert new Appendix 13-12.1-F (Pond 012 and Pond 012A Two-Pond System Design)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.2, Haul Road Ditch Design SEDCAD4
Results - replace appendix Table of Contents (page 13-12.24)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel Design
SEDCAD4 Results - replace appendix Table of Contents (page 13-12.3-i)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel Design
SEDCAD4 Results - replace Figure 13-12.3-1 (all three sheets; pages 13-12.3-1 to 13-12.3-3)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel SEDCAD4
Results - replace Postmine Channel YPM-6 System channel designs, pages 13-12.3-60K - 13-12.3-60N and 13-
12.3-60Q and 13-12.3-60R (YPM-7), pages 13-12.3-60W -13-12.3-60AD (YPM-6-2), 13-12.3-60AE -13-12.3-
60AH (YPM-6-2A), 13-12.3-AI -13.12.3-AP (YPM-5-1), 13-12.3-60AQ -13-12.3-60AR (YPM-5-1A) and 13-12.3-
60AS -13-12.3-60AZ (YPM-6-3)
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel SEDCAD4
Results - replace Postmine Channel YPM-4 SEDCAD demonstration, pages 13-12.3-83 -13-12.3-94B
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel SEDCAD4
Results - replace Postmine Channel YPM-8 channel design, page 13-12.3-103A
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel SEDCAD4
Results - replace Postmine Channel YPM-9 design SEDCAD4 demonstration, pages 13-12.3-106 -13-12.3-118A
• Attachment 13-12, Drainage and Sediment Control Plan, Appendix 13-12.3, Postmining Channel SEDCAD4
• Results - replace Postmine Channel YPM-12 design SEDCAD4 demonstration, pages 13-12.3-142 -13-12.3-142N