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Kerr Coal - 2004 Annual Hydrology Report February, 2005 <br />1.0 OPERATIONAL CONDITIONS <br />Active mining and coal production operations at the Mari Mine ceased in January 1993. During the active <br />life of the mine, mining operations occurred in three azeas; the Marr Pit, 720 Pit, and Pit 1. Mining was <br />completed and most of the associated disturbance in the Marr Pit azea was reclaimed during the period from <br />1979 through 1983. The 720 Pit and Pit 1 areas were baclcfilled and reclaimed during the period from 1993 <br />through 1996. Reclamation of those mine surface facilities that will not be reamed as permanent facilities to <br />support the post-mining land use and the associated coat loadout facility was completed in 1999. A spoil <br />monitoring well was installed at the north end of the 720 Pit area in 2001 (SP-Ol). The only ongoing <br />activities for the site aze site maintenance, environmenal monitoring, and reclamation permit compliance <br />activities. EFCI, in cooperation with the DMG, USDI-BLM, and OSMRE, completed a program during <br />2002 to identify, plug, seal, and reclaim a number of old exploration boreholes and shallow alluvial <br />monitoring wells in the Kerr North Area, north of the County Road. <br />