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Tom Bird <br />November 25, 2008 <br />Page 2 <br />b. In the SEDCAD runs please identify culverts and ditches with the same culvert <br />numbering system and ditch names as used on Map King II-007A (or provide a <br />list that cross-references culverts and ditches between the SEDCAD runs and the <br />map). <br />c. Please include a SEDCAD run for the pond for a 25-year, 24-hour storm. <br />d. Please include 10-year, 24 hour SEDCAD runs for the East and West Clear Water <br />Ditches. <br />e. Please include for all ditches an evalution of peak flow velocity which indicates <br />whether or not channel liner is needed for maintaining erosional stability. If <br />channel liner is needed, please indicate the minimum specifications for the liner. <br />4. Appendix 10. <br />a. Please state in the certification for the haul road and access roads whether or not <br />the plans and drawings meet: a) the requirements of Rule 2.05.3; b) current, <br />prudent engineering practices; and c) the design criteria of Rules 4.03.1 and <br />4.03.2. [2.05.3(3)(vii)] <br />5. Appendix 11. <br />a) Please include either a new factor of safety analysis for the pond embankment or <br />if applicable, add to the certification letter a statement that the factor of safety <br />analysis that is already in the mining permit application accurately represents as- <br />built (or worse) conditions. <br />Sincerely, <br /> <br />Tom Kaldenbach <br />Enviromnental Protection Specialist <br />cc: Dan Hernandez, DRMS