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 15-04 Project ID.: Elk Creek Mine Gob Vent Boreholes
Lease Number: COC-61357 (State or Federal) Surface Owner: Hotchkiss
Date Commenced: 3-Nov-09 Date Completed: 6-Nov-09
Contractor: Himes Drilling Rig Type: Atlas Copco RD20
Geologist: Doug Allen Date: 13-N6v-09 Toolpusher: Matt Himes
Driller: Jim Weatherton Truck Driver: Will Juusola Helper: Beau 0.
Sam Homedew Tommy Dennis Shaun L.
Coordinates: N. 15312.12 E. 35666.54
Location: Township,Range&Section: SE 1/4,Sec.31,T. 12 S.,R.90 W.
Ground Elevation: 7734' Collar Elevation:
Geophysical Log Measured From: ground Elevation
Total Depth: 1775' Probe Depth: 1777' Fluid Level: 600'
Casing Type: steel T&C Size: 9 5/8"
Casing Type: sol/slot steel T&C Size: 7"
Depth: 0-1652' Recovered(Y or N): N
Depth: 1564-1742' Recovered(Y or N): N
Bit Information
Surface Casing 16"Tricone to 20'(14"surface casing)
Main Hole 121/4"PDC from 20-1652'
Core:
Bottom Hole 8 3/4"Tricone from 1652-1775'
Footage Plugged: 0-1775' Cored: NA
Drilling Medium: Air: Foam/Water: Mud: Foam Injection:
Depths: 0-410' 410-1775'
Lost Circulation Depths: NA Regained? (Y or N):
Water Invasion Depth or intervals: 410' Estimated Inflow Rates: 25 gpm
Gas Invasion Depth or Interval: NA
Geophysical Logging Contractor: Jetwest Geophysical
Logs Run: Gamma: Y Neutron:
Temperature: Density: Y
Resistivity: Y Caliper: Y
Other(SP,Foc. Elec.,Drift, Dep.,Sonic): cement dump bailer
Hole Cemented(Y or N ),Type: N No.of Bags:
Interval:
Coal Core Sent To: NA Rock Sent To: NA
Comments: 7"casing overlaps 88'inside 9 5/8"casing.
9 5/8"annulus cemented with 30 bags plus 8 yds neat cement slurry.
Tagged gravel at 1750',tagged cement plug at 1742'.
9 5/8"casing abandoned to surface with 39 cubic yards portland type II cement October, 2010.
Himes Drilling Colorado water well license#1285