REV95072

• Permit No: C1981025
• IBM Index Class Name: Revision
• Doc Date: 2/10/2006
• Doc Name: Midterm Review Findings Document
• From: DMG
• To: MINREC, Inc
• Type & Sequence: MT5
• Media Type: D
• Archive: No

The North Thompson Creek Mines are inactive.
Snowmass Coal Company mined the site from ]
the site was initiated, in 1986.
They were mined from 19I 1 to 1964. The
971 to 1984. Mining ceased, and reclamation of
The mines are located on federal and private lands about seven miles southwest of Carbondale,
within Pitkin County, Colorado. There were two portal areas, Portal 1 located to the south of
County Road 108 and North Thompson Creek, Portal 3 located to the north of County Road 108.
No record was found where a third portal, located between US Forest Service Road 306 and
Middle Thompson Creek, was used during permanent permit time periods. An air shaft, the
Stoney Ridge air shaft, was located in the Middle Thompson Creek watershed to the south of
Portal 1. Coal processing and other major surface facilities were located to the northeast of Portal
1 between North Thompson Creek and County Road 108. Coal was hauled by truck via County
Road 108 and a spur road to a loadout facility. The spur road and loadout facility, included in the
permit, are located on private lands within Gazfield County, Colorado, northwest of Carbondale.
Coal was dumped from trucks on the west side of the Roaring Fork River, and conveyed by a
conveyor belt across the Roaring Fork River to a rail loadout facility on the east side of the river.
The former permit area east of the center of the Roaring Fork River (the 29-acre Diamond A
parcel) was released from bonding requirements and the permit in 1994, and is not included in
the current permit. The permitted mine facilities along the North Thompson Creek are referred to
as the "mine site", and the permitted loadout facility (west of the Roaring Fork River) is referred
to as the "loadout site," in this Findings Document.
The permit includes 1,516 acres of federal and 1,820 acres of private lands, of which 3300 are at
the mine site and 36 at the loadout. Phase III bond release has been achieved on all but 4.3 acres
of the disturbed area. 4.1 acres have been retained at the main mine site with apost-mining land
use of "developed water resources;" 0.2 acres remain at the former location of four water
monitoring flume sites, two on North Thompson Creek and two on Middle Thompson Creek.
The Division also retains its jurisdiction for azeas that overlie underground mine workings
associated with the permanent program permit. The remainder of the 3336 acres remain
officially within the permit area although Phase III bond release has been granted.
Section II -Revisions to the Permit
The following is a summary of the revisions to the permit since the latest renewal.
Technical Revision 23, 23 February 2004, that removed the groundwater monitoring requirement
for wells D1A and D2A.
Minor Revision 23, 10 October 2003, inserted an additional map into the PAP showing the
affected areas of Mines 1 and 3.
Section III -Notices of Violations and Stipulations to the Permit
Two notices of violation have been issued since the last permit renewal. These were
CV2004004, issued 15 September 2004 for failure to maintain ditches to minimize impact to the