2024-08-29_PERMIT FILE - C1980007 ‎(2)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/29/2024
• Doc Name: 2.05-15 Thru 2.05-49
• Section_Exhibit Name: 2.05.3 Operation Plan - Permit Area
• Media Type: D
• Archive: No

West Elk Mine

2.05-29 Rev. 06/05, 01/06, 03/06, 04/06 & 05/06- PR10; 01/09- MR350; 04/09- TR116; 04/09- MR353; 05/09- MR354; 08/09- TR118;
08/09- TR119; 09/12- MR387; 11/12- MR390; 07/18-PR15; 11/18- MR430; MR438- 09/19; MR439- 11/19; 07/20- MR447; 6/22-
MR464; 6/22 MR466; 6/22 MR468; 11/22 MR471; 07/23 MR474; 8/23 MR476; 09/23 MR477, 10/23 MR478, MR479, 3/24 MR480,
05/24 MR-481
area. The drillhole that conveys the water from the Box Canyon North area is approximately 365 feet deep.
From the surface to a depth of 40 feet the hole is 24 inches in diameter with 20-inch casing, from 40’ to 320’
in depth the hole is 18 inches in diameter with 14-inch casing and from 320’ to 365’ in depth the hole is 12.25
inches in diameter with no casing. The monitoring hole is located approximately 10 feet south of the drill
hole and is approximately 330 feet deep and 6.25 inches in diameter, cased in concrete and is used to monitor
the water level in the sump.

The Well House is connected to the million-gallon mine water tank via an 8” HDPE pipe buried at a depth of
5’. The Booster Pumphouse sits on a 20’ x 30’ concrete pad on the laydown yard west of the freshwater
ponds. This building houses the booster pump that pushes the water from the main minesite up to the tank.