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~~~ r <br />-2- <br />RESPONSE <br />• Exhibit A and Exhibit B p_ovide the design drawings and czoss se=lions <br />for the ditches and culverts. <br />Also attached for your review are the supporting drainage calculations <br />which indicate that the proposed construction plans for the ditches and culvert <br />are adequate to carry a 10 'year, 24-hour storm event. <br />We believe that this information should answer all of the Division's <br />concerns. If you have any questions, please call me. - <br />Sincerely, <br />COLOWYO COAL COMPANY <br />~~ ~~~ <br />James A. Niger <br />Reclamation Specialist <br />JAR/yml <br />cc: R.G. Atkinson <br />Central Files <br />• <br />• <br />