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The ponds will be certified as 'wilt on cor::��]_ec: o?: c• _ <br /> construction, as required by 4 . 05 . 6( 13) . <br /> Location of spillways. <br /> The location of the spillways will be indica�-z�?d on po d <br /> diagrams at .the time of re-certification. <br /> Riprap cr other measures . <br /> Mid-Continent will riprap outslopes greater than 10% , or <br /> secure Division approval before implementing other <br /> measures. <br /> Revised pages. <br /> Enclosed are pages which have been marked 11TR-18, 10/91 . " <br /> As indicated in the submittal of June 24, 1991, the pages <br /> should be placed at Vol. 3, App. II-B-7 as pages 45-47. <br /> Mid-Continent proposes to include this response as pages <br /> 48-50, and the pages have been marked " TR-18 , 10/91 . <br /> This is a general section relating to hydrology, whereas <br /> the specific attachments refer to areas of the mine. In <br /> that this spillway design applies to many areas of the <br /> mine, I believe this is the appropriate place for it, and <br /> that these are the correct numbers. <br /> • - Spillway slopes. <br /> Spillway slopes will be verified when the ponds are <br /> certified as built on completion of construction. <br /> Load-out facility pond. <br /> The submittal of June 24 , 1991 says that: <br /> " Due to the construction of the pond at the loadout <br /> facility, a second 12 inch C.M.P. nay be installed <br /> or a secondary weir type spillway 2 feet deep with <br /> a crest width of 2 feet of similar configuration as <br /> Fig. 1 will be cut into the existing concrete <br /> containment. " <br /> Vol . 9 App. VIII-H-1 pages 10-15 of the approved permit contain <br /> calculations for the pond at the loadout facility, and page 12 <br /> indicates: <br /> (b) Emergency Spillway . <br /> Discharge = 6 CFS <br /> 12" CMP @200- slope will be sufficient <br /> 2 10j91 <br /> Permit Page 49 <br />