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SubTerra, Inc. Twentymile Coal Company 02/I I/99 <br />Northern Mining District Subsidence Evaluation -Final Report <br />2. Increase in the surface area of Fish Creek from 16 acres to 55, 79, 92, and 100 acres <br />following excavation of the five panels forming the Northern Mining district. <br />3. Temporary increase in Fish Creek's surface area to 210 acres during peak flow <br />conditions. <br />If you have any questions regarding the above, please do not hesitate to call us at 425-827- <br />8003. <br />Best Regards <br />Chris Breeds, PE <br />President <br />• <br /> <br />7 PN: 98- 12 <br />