2009-03-31_REPORT - C1980006 ‎(3)‎

• Permit No: C1980006
• IBM Index Class Name: REPORT
• Doc Date: 3/31/2009
• Doc Name: 2008 Annual Hydrology Report
• From: Kerr Coal Company
• To: DRMS
• Annual Report Year: 2008
• Permit Index Doc Type: Hydrology Report
• Email Name: JHB
• Media Type: D
• Archive: No

Kerr (Marr) Mine - 2008 Annual Hydrology Report
1.0 OPERATIONAL CONDITIONS
Active mining and coal production operations at the Marr Mine ceased in January 1993. During the
active life of the mine, mining operations occurred in three areas; the Marr Pit, 720 Pit, and Pit 1.
Mining was completed and most of the associated disturbance in the Marr Pit area was reclaimed
during the period from 1979 through 1983. Contemporaneous reclamation occurred as mining
progressed and the remainder of the 720 Pit and Pit 1 areas were backfilled and reclaimed during the
period from 1993 through 1996. Reclamation of the mine surface facilities that will not be retained as
permanent facilities to support the post-mining land use and the associated coal Loadout facility was
completed in 1999. A spoil monitoring well (SP-01) was installed at the north end of the 720 Pit area in
2001. The only ongoing activities for the sites are site maintenance, environmental monitoring, and
reclamation permit compliance activities. Kerr Coal Company (Kerr) in cooperation with the Colorado
Department of Natural Resources Division of Reclamation, Mining and Safety (DRMS), the United
Stated Department of the Interior Bureau of Land Management ($LM) and the Office of Surface Mining,
Reclamation and Enforcement (OSMRE) completed a program during 2002 to identify, plug, seal, and
reclaim a number of old exploration boreholes and shallow alluvial monitoring wells in the Kerr North
Area, north of the County Road. In 2006, Pond C (CDPS #303) and Pond G and their associated soil
stockpiles and ditches were reclaimed. Pond F was recommended for permanent status in 2006 and
the decision was approved in 2007. In 2007 (TR-23) Kerr recommended that all surface, groundwater
and vegetation monitoring at the mine be revised (terminated) because all the requirements of the
permit had been met. Subsiquently,TR-23 was approved.
2.0 BOND RELEASE
Kerr submitted a bond release request to the DRMS on September 6, 2007. Bond Release Request No.
4 (SL-04) requested release of Phases I, II and III of the majority of areas at the mine site as specified
in the request. Excluded were two parcels (approximately 4 acres each) located east and south of the
shop facilities that were not yet eligible for release due to timing of the 10 year reclamation liability
period and so were not released.
Prior to approval of the bond release request, the former water monitoring wells located at the mine site
were sealed and reclaimed during October, 2008. The wells are identified as: 79-1; 79-2; 79-3; 79-
61 and AO-2A. The Spoil Well, SP-01 (former monitoring well) was converted to a Stock Watering Well
at the request of the landowner and approval of the Colorado Water Division and the DRMS. Locations
of the wells are shown on Map 1, Mine Area Monitoring Stations.
Approval of the bond release (SL-04) became final on January 5, 2009 as approved by the DRMS and
with concurrence of the respective agencies, OSM and the t3LM. The Loadout Site, south of the town
of Walden is not yet eligible for bond release due to the timing of the reclamation liability period and will
continue to be monitored as required.
Kerr Mine/Al-111 2008 Page 1