1988-08-19_PERMIT FILE - C1981008A ‎(2)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 8/19/1988
• Doc Name: Ground Water Monitor Well Completion Information and Lithologic Logs
• Section_Exhibit Name: Tab 15 Attachment 15-2
• Media Type: D
• Archive: Yes

MONITOR WELL DRILLING AND CONSTRUCTION SUMMARY
NUCLA AND NUCLA EAST MINES
Monitor Well Name GW-N23(WM0023) Geologic Unit Monitored Overburden,Dakota Coal , and
Elevation Ground Level (ft-amsl ) 5744.57 Underburden
Location: N 604734,974 E 1.117074. 12 T 47 N R 16 W S 36 A A D _
Total Drill Depth (ft) 31.0
Total Well Depth (ft) 29.6
Drilling Details
Borehole Diameter ( in) 5 1/4 to 14.0' ; 4 7/8 to 31.Rig Speedstar 1500
Bits Tricone and Core Driller Allan Chiles
Drilling Fluid Air
Additional Details Exploration Hole 873-C
Drilling/Construction: Start 04/20/86 Finish 04/20/86
Lithologic Log (Y/N) Y
Geophysical Log (Y/N) N
Construction Details
Casing Specs : Blank 2" id PVC sch40 Perforated 1/8" saw slot
Perforated Intervals) 23.6 -29.6
Packer Set At 5.•0'
Cement From 0.01 To J.0,
Bentonite Slurry From NA To
Gravel Pack From NA To
Additional Details Dry Hole
Development Summary
Comments, Problems Top of Lower Dakota Coal at 16.0' . Bottom of Lower Dakota Coal
at 23.6' .
15-2-54 Revised 11/01 /86