PERMFILE64130

• Permit No: C1981042
• IBM Index Class Name: Permit File
• Doc Date: 2/17/1981
• Section_Exhibit Name: APPLICATION ‎(1981)‎
• Media Type: D
• Archive: No

• surfaces where the representing confined aquifers or zones of
saturation probably do not exist in the northern part of
applicant's coal lands. Water or moisture was encountered in
most of the drill holes at varying stratigraphic position in
amounts inadequate to saturate the strata. See Exhibit "G"
which is a summary of the drill hole data showing the varying
depths at which water was encountered.
An examination of drill hole cuttings and core samples
reveal that most of the thick sandstone units have fabrics of
unstratified tightly packed angular or subangular grains
often partially cemented with clay. The lensing of sandstone
units is demonstrated by comparing logs of drill holes. Some
sandstone members lens or pitch, or may change laterally
almost to the point of non-recognition within one or two
miles.
Coal seams are fairly persistent, more so than most
sandstone beds. Several seams have been traced and pinched
and swelling, for distances of several mines. Almost without
exception, coal seams are underlain by 6 to 24 inches of
soft, impermeable clayey shale. Coal seams are most often
capped with a thin bedded shale or sandy shale ].2 to 24
inches thick which is frequently overlain by a hard mass of
sandstone of varying porosity.
• Typical Menefee aquifers might be relatively thin lens-
ing sandstone overlain and/or underlain by shaley beds, and
which may gradually change into a more shaley substance within
a mile or two. The Menefee can be considered as an irregular
assemblage of such aquifers, essentially a hydrologic unit of
limited size and capacity. A sort of lithologic cleavage in
the sediments may increase their capacity, and they may be
interconnected by structural deformities, both of which could
enhance their potential as aquifers. One can make a crude
estimate of ground waters flowing to the Menefee each year
that would flow through applicant's coal lands assuming that
most of the ground waters are captured by the outcrop of
Menefee beds along the northern boundary of Section 16,
Township 35 North, Range 10 West; that this capture is 2.5
miles long x 400 feet wide; that the annual precipitation is
18 inches per year; that 900 of the total yearly precipitation
falling on this area flows docon the steep north slope (see
Map A) and only 10% into the Menefee bed; then, a total of 17
acre feet of water per year would enter the Menefee from this
capture area.
Assume further that 200- of the beds and the 200 feet of
Menefee section capture all of the 17 acre feet of water and
have an average porosity of 20%. Under these assumptions,
the down dip dimension of the interval of saturated beds will
total about 12 feet per year. These yearly driblets will
. elongate as they move down dip to the south replenishing and
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