2022-12-19_PERMIT FILE - C1980007

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/19/2022
• Section_Exhibit Name: Exhibit 12 Table of Contents
• Media Type: D
• Archive: No

West Elk Mine

Revised 05/06- PR10; 10/16- MR420; 12/17 MR427; 12/18- MR431; 12/19- MR440; 12/20- MR454; 12/21- MR457; 12/22-MR472
Exhibit 12 - Borehole Logs, and Monitoring Well/MVB Construction and
Plugging & Abandonment Completions

Table of Contents

A. Exhibit 12 - Summary of Well Completion Data (spreadsheet)
B. Monitoring Well As-Builts
1) RPE – 7
2) GP – 6
3) GP – 7
4) So. W – 1
5) So. W – 3
6) RAV – 46
7) 96-2-2 (BB)
8) 96-15-1 (FF)
9) 96-27-1 (S)
10) JMB – 12

C. Well Completion and Location Reports (Rev. Oct., 1989)

Table 1 – Well Descriptions, Mt. Gunnison No. 1 Mine

D. Well Completion Reports
1) SOM 38-H-1
2) SOM 38-H-2
3) SOM 45-H-1
4) SOM 45-H-2
5) SOM 76
6) SOM 80H
7) B-16
8) B-32
9) B-27-2 (Formerly B-32-W)

Table 2 – West Elk Coal
Lower Waste Pile Soil Borings and Piezometer
Installation Summarization Sheet

E. Coal Exploration Drill Hole Abandonment Report
F. Letter Dated September 15, 1981 to MLR from ARCO Coal Company, for a
well completion for WR-2 and WR-3