2009-05-14_REVISION - C1980001 ‎(6)‎

• Permit No: C1980001
• IBM Index Class Name: REVISION
• Doc Date: 5/14/2009
• Doc Name: Bond Release Application Up to Attachment E
• From: WWC Engineering
• To: DRMS
• Type & Sequence: SL11
• Email Name: JDM
• Media Type: D
• Archive: No

15. Dates Reclamation Work Performed:
• Reclamation work location and dates performed have been identified on the
Topsoiled and Seeded Summary Map found in Attachment C. Topsoil replacement
and initial seeding took place from 1981 to 1996.
16. Description of the Reclamation Plan Results Achieved:
Topsoil was salvaged and replaced in accordance with the Reclamation Plan. The
Moffat Area average replacement depth was 9 inches. The West Ridge Area had
been previously mined and topsoil was minimal. The West Ridge Area average
replacement depth varies from 9 to 11 inches covering as much acreage as possible.
Topsoil depths have previously been inspected and adequate depths confirmed.
This documentation is recorded in Inspection Reports dated:
West Ridge Area; 11/16/95, 07/22/96
Moffat Area; 07/22/96, 09/19/97
Extensive documentation of topsoil management and replacement is described in
Section 4.3 of Permit C-80-001.
Revegetation meets and exceeds the release criteria standards established in the
• Reclamation Plan. Vegetation monitoring was conducted in 2005 and 2006. All but
one of the monitoring areas passed all required parameters. The Moffat/West
Ridge Non-topsoiled bond release unit did not meet minimum vegetation cover
requirements in 2006. This was attributed to weather and timing of the study.
Vegetation cover monitoring was repeated in 2008 meeting and exceeding all
applicable standards established in the Reclamation Plan. Extensive documentation
of revegetation is described in Section 4.3 of Permit C-80-001. The 2005 Edna Mine
Vegetation Sampling Report, 2006 Edna Mine Vegetation Sampling Report and the
2008 Edna Mine Vegetation Sampling Report are found in Attachments D, E and F
respectively.
A hydrologic monitoring program was established for the Edna Mine. The lands
requested for release contain no streams but are bounded on the east by Oak Creek
and on the west by Trout Creek. Surface water quality is monitored at sites TR-A,
TR-B, TR-C and TR-D. Surface water flow is measured at sites TR-a and TR-b.
Groundwater levels and quality are collected from four monitoring wells. Three
wells are completed in the alluvium along Trout Creek (TR-1.5, TR-3, TR-4) and
one well is completed in the spoils (WR-1) located at the base of the West Ridge
Area. An additional water quality well is completed in the Trout Creek Sandstone
(TCS-1) monitored downdip of mining activity.
• Extensive documentation regarding the Hydrologic Balance Control Plan is
described in Section 4.6 of Permit C-80-001. An impact analysis of surface and
Bond Release Application, Page 4 of 5