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Summarv The Review Process Twentymite Coal Company submitted an application for a permit revision (PR-04) on April 2, 1997. The application proposed to extend mining in the Eastern Mining District to include longwall panels 6R through 2R,new associated gateroads in the Eastern Mining District, and new development of the Northeast submains. The application also proposed to extend mining into the Northern Mining District, which would include the Northwest mains, gateroads 11R through 18R and including the western half of 19R, and mining of longwall panels 12R through 17R. The Division found the application complete on April 12, 1997. The Division sent an a letter to the operator identifying items that were inadequate or needed additional clarification on August 18, 1997. The operator responded to the August 18, 1997 letter with a submittal on February 4, 1998. The Division sent another letter identifying several unresolved concerns on February 27, 1998. Twentymite Coal Company submitted responses on March 9, 1998. Additional questions were sent to Twentymite Coal Company by the Division on March 13, 1998. Responses to the March 13, 1998 letter were received by the Division on March 25, 1998. The Division received comments from the Colorado Historical Society on Apri125, 1997. The Society did not express concern or require additional cultural resource work unless "previously unidentified archaeological resources are discovered in the course of the project..." The Division received comments from the U.S. Fish and Wildlife Service on May 16, 1997 identifying water depletion as the only stated concern regarding this revision. Twentymite Coal Company has consulted with and gained approval for additional water depletion due to an increase in annual production via Technical Revision No. 28. Information received from Twentymite Coal Company on February 4, 1998 projected water depletion in the Northern Mining District due to recharge of the alluvium resulting from subsidence of the Fish Creek AVF. The proposed mining activities in the Northern Mining Disvict were subsequently excised from PR-04. U.S. Fish and Wildlife Service concerns have been addressed for the Eastern Mining District (Panels 6R-2R) and NE submains pertinent to PR-04. The Division continued to have concerns with regard to the undermining of the Fish Creek Alluvial Valley Floor, predictions, mitigation, and potential water depletions. Twentymite Coal Company consequently removed all reference to mining in the Northern Mining District from this permit revision application (PR04), on April 17, 1998. The Division is proposing approval of extended mining in the remainder of the Eastern Mining District and development of the Northeast submains.