2020-09-30_PERMIT FILE - C1981022 ‎(2)‎

• Permit No: C1981022
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2020
• Doc Name: Borehole Abandonment Reports
• Section_Exhibit Name: Exhibit 2.04-E3 Tab I/Item 9
• Media Type: D
• Archive: No

Oxbow Mining LLC
Elk Creek Mine
Hole Number: GVB 16-05C Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss
Date Commenced: 23-Jan-11 Date Completed: 27-Jan-11
Contractor: Himes Drilling Rig Type: Atlas Copco RD20
Geologist: Doug Allen Date: 3-Feb-11 Toolpusher: Matt Himes
Driller: Jim Weatherton Truck Driver: Kirk Homedew Helper: Richard M,
Sam Homedew Will Juusola Trey H./Chad H,
Coordinates: N. 16324.30 E. 36643.80
Location: Township,Range&Section: SE 1/4, Sec, 31,T. 12 S.,R.90 W.
Ground Elevation: 8094' Collar Elevation:
Geophysical Log Measured From: ground Elevation
Total Depth: 2260' Probe Depth: NA Fluid Level: NA
Casing Type: steel T&C Size: 9 5/8"
Casing Type: Size:
Depth: 0-1976' Recovered(Y or N): N
Depth: Recovered(Y or N):
Bit Information
Surface Casing 16"Tricone to 42'(14"surface casing)
Main Hole 12 1/4" PDC from 42-1976'
Core:
Bottom Hole 8 3/4"Tricone from 1976-2260'
Footage Plugged: 2260' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-130' 130-2260'
Lost Circulation Depths: NA Regained? (Y or N):
Water Invasion Depth or Intervals: 130' Estimated Inflow Rates: 2 gpm
Gas Invasion Depth or Interval: NA
Geophysical Logging Contractor: Directional hole-no logging.
Logs Run: Gamma: Neutron:
Temperature: Density:
Resistivity: Caliper:
Other(SP, Foc.Elec., Drift,Dep., Sonic):
Hole Cemented (Y or N ),Type: Y No.of Bags:16 yds for 9 5/8"annulus
Interval:to surface
Coal Core Sent To: NA Rock Sent To: NA
Comments: No 7"casing-8 3/4"hole left open.
Drilled directional from 290-1976'. Bottom of 9 5/8"casing located 369,02'at azimuth 89,22 degrees,
9 5/8"casing abandoned to surface with 20 yds portland type 11 cement September,2011.
Himes Drilling Colorado water well license#1285