2007-11-01_PERMIT FILE - C1982056A ‎(8)‎

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 11/1/2007
• Section_Exhibit Name: 2.05.5 Postmining Land Uses
• Media Type: D
• Archive: Yes

• Determination of baseline surface and ground water quality and quantity conditions;
• Identification of normal seasonal and areal variations in baseline levels;
• Definition of the relationship between surface and ground water systems;
• Definition and evaluation of potential mining related impacts on the area hydrologic system;
• ]dentification and evaluation of protection and mitigation measures; and
• Evaluation of the significance of potential mining related impacts given the factors of baseline
conditions, hydrologic connection, mitigation measures, relative contributions, time constraints and
water use permits.
It should be noted that discussion of "probable hydrologic consequences" does not imply actual adverse
impacts. Generally, the probable hydrologic consequences discussed will not have any long-term adverse
effects on the area hydrologic balance. The scope and analysis of probable hydrologic consequences
predictions has focused on quantifying the impacts that may be expected to occur based on our understanding
of the site hydrology. These predictions will be re-evaluated as observed effects are measured by the on-
going and proposed monitoring program as described in Exhibit 14, Hydrologic Monitoring Plan.

For purposes of the hydrologic discussions, the present and future mining area has been subdivided into
mining districts.
• North Mains and portal area (NMS)
• 1"Panel South, South West Mining District (panels I SW to 3 SW) and the South Panels (panels I Left to
6 Left): the Western Mining District (WMD)
• Panels 2 Right to 9 Right: Eastern Mining District (EMD)
• Reserves north of the EMD: Northern Mining District (NMD)
• Reserves north and west of the WMD: Northwest Mining Dis[ric[ (NWMD)
The North Mains presently extend to the northem limit of the WMD and the EMD. Mining in the WMD was
completed in 1996 and the area subsequently sealed. As of June 1999, mining of the EMD was approximately
65% complete. The NMD is planned to be developed next.
The projected ground and surface water monitoring plan has been designed to detect impacts to these
respective systems. TCC will continue to monitor these systems as presented in Exhibit 14.
The mining activities within the presently active Eastern Mining District consist of longwall mining
operations in eight panels. These panels are approximately 1 1,500 to 20,000 feet long and 850 feet wide. The
panels are numbered from "9 Right" for the northem-most to " 2 Right" for the southem-most panel.
The analysis of subsidence effects due to longwall mining in the Eastern Mining District on the surface and
ground water hydrology in the study area is based on the site-specific morphologic, hydrologic, and
hydrogeologic characteristics. The results of subsidence analysis presented in Exhibit 7E, Prediction of
Subsidence, Eastem Expansion at the Foidel Creek Mine, used in the assessment of the effects on hydrology.
The mining activities within the Northern Mining District, subject to PR 99-05, consist of longwall mining
operations in five panels. These panels are approximately ]1,500 to 20,000 feet long and 1000 feet wide.
The panels are numbered from "12 Right" for [he southem-most to "] 6 Right" for the Northern-most panel.
The analysis of subsidence effects due to longwall mining in the Eastem Mining District on the surface and
ground water hydrology in the study area is based on the site-specific morphologic, hydrologic, and
hydrogeologic characteristics. The results of subsidence analysis presented in Exhibit 4e-3, Prediction of
Subsidence, Northem Mining District, used in the assessment of the effects on hydrology.
APPRO~h~'n .ItIN ? 0 2000
PR 99-OS 2.05-132 5/3/00