2015-08-31_PERMIT FILE - C1981010A ‎(37)‎

• Permit No: C1981010A
• IBM Index Class Name: Permit File
• Doc Date: 8/31/2015
• Doc Name: pages 2-523a to 2-576u
• Section_Exhibit Name: 2.7 Hydrology Part 4
• Media Type: D
• Archive: Yes

GP -2, GP -4 and GP -8, respectively. Map M54A presents the water -level elevation
contours for the KLM aquifer. September 1986 water levels were used to develop the
map.
Figure 2.7-29d exhibits water levels for well GP -2 that have not shown much
change except for the gradual decrease in late 1985 and a gradual increase during
1986. Water -level elevations are presently (November 1986) close to 6890 feet above
MSL.
Well GP -4 is a flowing well and Figure 2.7-29e presents pressure readings in
the KLM aquifer converted to water -level elevations. The water -level elevations
show some erratic appearance. This is most likely explained by a difference in
• method of measurement of pressures on well GP -4. The water -level elevation is
presently at 6580 ft-msl.
Figure 2.7-29f shows a gradual rise in the water -level elevation after
installation of well GP -8 until early 1986. Water -level data from early 1986 to
November 1986 has remained roughly at 7133 feet above MSL.
Map M54A shows the water -level elevation for the KLM aquifer for the Trapper
Mine. The hydraulic gradient of the KLM aquifer near wells GP -8 and GP -2 is
approximately 0.14 ft/ft, but is approximately one-half this value near well GP -4.
HI Aquifer
2-523 t REVISED FEB 13 '87
Wells
GP -3, GP -7
and GC -1
are completed in the
HI aquifer in
the eastern
•
portion of
the Trapper
Mine.
Water -level elevations
for the three
wells have
2-523 t REVISED FEB 13 '87