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<br />OOlG94 <br /> <br /> <br />APPENDIX C <br /> <br />IS IlEPU' <br />UfEa. TO: UC-420 <br />SlOe <br /> <br />., <br /> <br />OhIelAJ~ tS~P'271979' "1 <br />I )~llE COpy . <br />.'INfORMATlON ~ <br />.coPY TO: B <br />ROUTE TO IWTlAlS D~E Y <br />1 '-fOO v.>'..f'7 7/2.7 <br /> 47n ,i. ' . <br /> I. .... -:,,'rJ _, ~.,e <br />(. ;r.:.....-6:* <br />" '~!,JL,..,."., .;.:' <br /> " .., . <br />Q15 4 <br /> <br />~ <br />()f1. . V <br />r;Jj~) I <br />. I <br />I. <br />ii <br /> <br />lJ oited States Department 0 <br />BL'REAU OF RECl.\~I:\T <br />UPPEJl COLORADO REGIO~AL 0 <br />P.O. BOX 11568 <br />SALT L\KE crr\". CT:\1t 8~ <br /> <br />SEP 2 6 1979 <br /> <br />Memorandum <br /> <br />To: C) Chief, Curecanti Field Division, <br />Z <br />From: 5' Regional.Supervisor of Water and <br /> <br />Subject?- .Operation of Auxiliary Outlet Works at Navajo Dam, CRSP <br /> <br />Permission is granted to deviate from the Designers Operating Criteria <br />to operate the Navajo Dam 4 X 4 auxiliary outlet works with the water <br />; surface elevation above 5920. The original restriction was placed on <br />, the operation of the gate before the flip bucket was added to the <br />outlet. The gate was tested this spring by Lee Gerbig of the E&R <br />Center and Jack Langford of the Regional Office and found to operate <br />satisfactorily under the higher reservoir water surface elevation. <br />Both tbe guard gate and the regulating gate should be well lubricated <br />before operation at the bigher head. <br /> <br />These gates can be operated at the higher head while the main outlet <br />works are drained and repairs completed. The Review of Operation and <br />Maintenance examination will be held on October 1,1979, and an <br />~~mination ,of both outlet works will be required at this time. <br /> <br />Don H. Barnetf <br /> <br />'. cc: / Chief, :Division of O&M Technical Services, E&R Center <br />Chief, CRSP Power Operations Office, Page, Arizona <br />