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TABLE 3.1 Coal Outcrop Barrier Minimum Width, by Selected States
State
Minimum Width in Feet
Regulations
AL
No standard minimum width is
specified.
Alabama Administrative Code, Ch.
880-X-81
IL
No standard minimum width is
specified.
Illinois Administrative Code, Title 62
IN
No standard minimum width is
specified.
Indiana Code, Title 14
KY
Minimum width is to be
determined on a case by case basis
but will be at least W=50 feet + H,
unless it can be shown that less
will be effective. An exception
may be made if no water
accumulation is expected.
Kentucky Administrative
Regulations, Title 405, Subtitle
18:010.6
MD
Minimum width is to be 50 feet or
W=20 + 4T+0.1D (whichever is
greater). If barrier will be affected
by hydrostatic head, the barrier
will be a foot wide for each foot to
hydrostatic head.
Code of Maryland, Title 26, Subtitle
20.13.11
OH
No standard minimum width is
specified.
Ohio Administrative Code, 1501:13
PA
No standard minimum width is
specified, but the necessity for a
coal barrier to prevent water
release is noted.
Pennsylvania Code, Title 25,
Chapter 89.54 (b)
TN
*
No standard minimum width is
specified.
30 CFR, Part 942
VA
Minimum width will be
determined either as a site specific
design or by W=50+H. An
exception may be made if the
barrier will not be subject to
hydrostatic head.
Virginia Administrative Code, Title
4, Agency 25, Chapter 130-817.41
(a)(i)(3)
WV
No standard minimum width is
specified; however, the plans must
note the outcrop barrier width and
the maximum head. In addition,
mine maps must designate the
location and thickness of outcrop
barriers.
West Virginia Surface Mining
Reclamation Regulations, Title 38-
Series 2-Section 3.13 (a) and (c) and
Section 3.4 (f.2.H).
NOTE: W=minimum width (feet); H=maximum hydrostatic head (feet); T=thickness of extraction
(feet); D=depth of overburden (feet)
* Tennessee does not have primacy.
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