PERMFILE138388

• Permit No: X199621900
• IBM Index Class Name: Permit File
• Doc Date: 6/30/1996
• Doc Name: NOI Application
• Media Type: D
• Archive: No

conducted on a twenty four hour basis in order to minimize the
total time required. It is anticipated that access road
' maintenance will be minimal due to the program be conducted in
the dry seasons. In the unlikely event that mid-winter drilling
is necessary, excessive snow would be bladed to the side of the
' existing roadways.
Holes will be a nominal 6.25" in diameter and vary in depths from
1200 to 2200 feet. The anticipated total depths of each hole are
' presented in the Confidential Appendix 2, Table 1. It is
anticipated that one hole will be drilled on each location,
though depending upon geologic and hydrologic data needs, any of
' the holes may be twinned.
It is anticipated that the floor, roof, and coal seam of interest
' will be cored for each hole. These cores will be characterized
for coal quality and rock strength parameters. It is
anticipated that all holes will extend approximately 30 feet into
the top of the Trout Creek Sandstone, and that all holes will be
' geophysically logged.
Equipment associated with the drilling operations will include:
Drilling rig, pipe truck, core trailer, crew pick-up truck, and
geologist pick-up truck. A geophysical logging unit will be on
site at completion of the drill hole. Other equipment which will
be utilized for drill pad construction, and reclamation
' activities will include a track dozer of Catapiller D6 size and a
small rubber-tire backhoe for the digging of mud pits.
' The proposed drilling program will involve a number of
preparatory steps prior to the commencement of, and subsequent to
drilling. These steps include the following: access corridor/
' drill pad preparation, drilling, well completion or abandonment,
and reclamation of drill pads and access corridors. Details of
each step is outlined in the following discussion.
Access roads
' The primary access to the exploration area will be by county
road, south of Hayden. As shown on Map 1, county roads and
existing "unimproved" county roads, will be utilized to access
' the drill sites, so as to minimize disturbance associated with
the drilling program. No new road construction is proposed
within this exploration program as the drill sites will be
located adjacent to existing roads. The drill sites will be
' located as close as practically possible to these existing roads
in order to minimize disturbance. Only short access corridors
may be necessary in order to locate the drill sites off of the
' existing roads. The length of the access corridors are expected
to be less than 100 feet. It is proposed that overland travel
will occur to access the drill pad, minimizing disturbance. In
the event that leveling is necessary for access, all available
' topsoil will be salvaged and windrowed to the uphill side of the