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• Mitigative Measures: None <br />Name of specialist and date: Hunter Seim 5/17/06 <br />WASTES, HAZARDOUS OR SOLID <br />Affected Environment: If the release does occur, the environment affected would be <br />dependent on the nature and volume of material released. If there are no releases, there will <br />be no environmental impact. <br />Environmental Consequences: Consequences will be dependent on the volume and nature of <br />the material released. In most every situation involving hazardous materials, there are ways <br />to remediate the area that has been contaminated. Short-term consequences will occur, but <br />they can be remedied, and long-term impacts will be minimal. <br />Mitigative Measures: None <br />Name of specialist and date: D. Johnson 5/22/06 <br />WATER QUALITY - GROUND <br />Affected Environment: The surface formation is the Cretaceous Lewis Shale. Groundwater <br />will be impacted by.the mining of the additional acres of coal. <br />Environmental Consequences: Groundwater has been addressed in the existing <br />environmental documents for the existing mining operations. With proper mining practices <br />and by following the mitigation address in the approved mine plan and environmental <br />documents, there should be no significant environmental consequences to groundwater. <br />Mitigative Measures: None <br />Name of specialist and date: Robert Ernst 5/17/06 <br />WATER QUALITY - SURFACE <br />Affected Environment: Runoff from the area affected by the proposed action will flow to <br />Fish Creek, which is a perennial tributary to Trout Creek. The water quality of Fish Creek <br />must support the following beneficial uses: Aquatic Life Cold 1, Recreation la and <br />Agriculture. <br />Longwall mining in the vicinity has occurred since about 1988 and runoff water from the <br />subsided areas, as well as, mine inflow water derived from the mined coal aquifer has been <br />released into Foidel Creek and Fish Creek. The mine inflow water has TDS levels <br />. comparable to Foidel Creek upstream of the underground mine, however subsequent <br />handling and holding of this water tends to increase the TDS levels. Twentymile Coal