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Marc Mine - 2006 Annual Hydrology Report Maroh 2006 <br />1.0 OPERATIONAL CONDITIONS <br />Active mining and coal production operations at the Marr Mine ceased in January 1993. During <br />the active life of the mine, mining operations occurred in three areas; the Mar Pit, 720 Pit, and Pit <br />1. Mining was completed and most of the associated disturbance in the Marr Pit area was <br />recaimed during the period from 1979 through 1983. The 720 Pit and Pit 1 areas were backfilled <br />and reclaimed during the period from 1993 through 1996. Reclamation of the mine surface <br />fatalities that will not be retained as permanent fatalities to support the post-mining land use and <br />the associated coal Loadout facility was completed in 1999. A spoil monitoring well was installed <br />at the north end of the 720 Pit area in 2001 (SP-01). The only ongoing activities for the site are <br />site maintenance, environmental monitoring, and reclamation permit compliance activities. Ker <br />Coal Company (Ker) in cooperation with the Colorado Department of Natural Resources Division <br />of Reclamation, Mining and Safety (DRMS), the United Stated Department of the Interior Bureau <br />of Land Management (BLM) and the Office of Surface Mining, Recamation and Enforcement <br />(OSMRE) completed a program during 2002 to identify, plug, seal, and reclaim a number of old <br />exploration boreholes and shallow alluvial monitoring wells in the Kerr North Area, north of the <br />County Road. In 2006, Pond C (CDPS #303) and Pond G and their associated soil stockpiles <br />and ditches were recaimed. Pond F was recommended for permanent status in 2006 and the <br />detasion (by DMRS) is pending. <br />File: 6371/2006/2006 hydrology tpt Page 1 <br />