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Ms. Susan Mowry <br />August 15, 1984 <br />Page Two <br />Golden Eagle Mine <br />Problem 84-013-01. An analyses of culvert sizing can be found in Appendix A. 'fhe <br />same methods were employed for evaluating culverts 8 and 9 as discussed for the <br />New Elk. The results of this evaluation shows the present culverts are adequate. A <br />20 year 24 hour event was used to evaluate the sizing of CMP 8. The flow for this <br />event is S50 cfs. The calculations show the culvert will not overtop the railroad. <br />Problem 84-013-03. Appendix B contains survey information for pond 003 and 004. <br />The same situation is believed to exist for these ponds as discussed for the New Elk <br />ponds. WFC will commit to make changes as necessary to ponds 003 and 004, to be <br />in compliance with 405.6(3)(c) on the same schedule as the New Elk ponds. <br />If you have any questions or need additional information, please do not hesitate to <br />contact me. <br />SinTcerely,~/~ <br />~L/~L <br />David M. Stout <br />Environmental Coordinator <br />DMS/jla <br /> <br />