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-N17P1(WNO117) Geologic Unit Monitored Dakota Coal
Elevation Ground Level (ft-amsl ) 5672.33
Location: N 597937. 126 E 1,117885.61 T 46 N R 15 W S 6 B C C _
Total Drill Depth (ft) 108.0
Total Well Depth (ft) 103.0
Drilling Details
Borehole Diameter (in) 7 7/8 Rig Speedstar 1500
Bits Tricnne Driller Allan Chiles
Drilling Fluid Air and Mud
Additional Details
Drilling/Construction: Start 06/28/86 Finish 06/29/86
Lithologic Log (Y/N)_N
Geophysical Log (Y/N) N
Construction Details
Casing Specs : Blank 4" id PVCsch40 Perforated 0.02" slot
Perforated Intervals) 84.2' - 108.0'
Packer and Cement Basket Set At 84.21
Cement From-approx. 72.2' To 84.2'
Bentonite Slurry From 5.0' To approx. 72.7'
Gravel Pack From NA To
Additional Details Approximately 1 gallon of H.0 came up completion string
while setting cement but no cement found in completion interval next day.
Development Summary_ Developed well for two hours using air/water injection and
lastly, only air; well produced about 2 gpm.
Comments, Problems Top of Upper Dakota Coal at 84.2. Bottom of Lower Dakota Coal
at 107.6' .
15-2-22 Revised 11/01/86