2009-05-12_PERMIT FILE - C1980005 ‎(2)‎

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 5/12/2009
• Section_Exhibit Name: Tab 12 Operation Plan
• Media Type: D
• Archive: No

state Rea.
• ponds are designed for controlling runoff from disturbed
areas. All diversions and carrimant control structures are
designed in aocoxs3ance with the applicable regulations
and conform to cunrently accepted engineering Practice.
Power distribution system at Seneca which services high
voltage electrical stripping equiptrent and ,m,cr be well
planned for optimmi accessibility. Power for stripping
equipnent is normally routed fx+an the highwall or tudistisbed
side of the active pit because of its ease of access aryl to
alleviate mining and reclamation h;nfi-anroa,
A very lI[QJOrtarlt task rerniirirg utilization of the best
available engineering techniques is the design of the most
stable postrnine laid surface. Determination of such factors
as spoil swell, stream gradients, posttnine lard use, spoil
character, and foundation materials will affect the design of
• a surface of approximate original contour. ZSte currently
accepted technique is to design a surface whose slopes do not
exceed the nr~iin;m slope arnd whose general configuration
approximates the preminirg surface.
2.05.2(1) Area surface mining is the most efficient method of recovery
4.01.1 of coal resource, especially in areas such as Seneca where the
coal is of such a quality that it can be shipped to the power
plant without processing. At Seneca II, the Wolf GYeek and
Wadge seams are being mined to depths of approximately 140 and
100 feet, respectively, (limitation of the stripping
equipment) with a resotnroe recovery rate approaching 95
percent. Table 12-2 illustrates the anticipated annual and
total production of coal fz'aa Seneca II remaining fx~n 1-1-92
2.05.2(1) thrar~n the life~f-mine. Table 12-2A lists the actual annual
2.05.3(1) and total production of coal fnxn Seneca II for the 1987 to
•
12-7 Revised 08/20/93