2008-12-04_PERMIT FILE - C1994082A ‎(12)‎

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Section_Exhibit Name: Tab 20 Backfilling and Grading
• Media Type: D
• Archive: Yes

TAB 20
• TABLE OF CONTENTS
4
Backfilling and Grading Procedures 1
Post Mining Topography 3
General 3
Volume Calculations (Pre-mining Topography) 3
Pre-mining Material Volume ~
Virgin Overburden Material Volume ~
Total In-Place Coal Volume ~
Recoverable Coal Volume ~
Non-recovered Coal and Parting Material Volume ~
Pre-mining Overburden Volume ~
Total Pit Spoil Volume ~
Volume Calculations (Post Mining Topography) ~
Pre- and Post Mine Slopes ~
Post Mining Drainage Channels 8
• Disturbance Area 11
11
Permanent Structures and Features
References Cited 12
LIST OF FIGURES
Figure No.
^~-
20-1 Post Mining Topography Typical Mass Balance 5
LIST OF TABLES
Table No Page
20-1 Post Mining Landform Mass Balance 4
20-2 Pre- and Post Mining Drainage Channel Summary 10
•
TR-37 i Revised 01/08