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<br />,', <br /> <br />. PRELIMINARY., <br />SUBJECT TO REVISION <br /> <br />3. In the forty-year operating history of the project. the maximum <br /> <br /> <br />mean daily discharge has been 4830 cfs which occurred in 1965. Other than <br /> <br /> <br />1965. the maximum mean daily releases rate for anyone year has been less than <br /> <br /> <br />2000 cfs. Therefore, this comparison between outlet discharge capacity and <br /> <br /> <br />downstream demand indicates that modifying one conduit of the outlet works for <br /> <br /> <br />power generation would have no adverse impact on normal operating procedures. <br /> <br />a <br /> <br />r ..) <br /> <br />'":J <br /> <br />~ <br />(.Jl <br />QJ <br /> <br />" <br /> <br />B. F.ffp~ts on Soillway Operation. <br /> <br />1. As the proposed hydropower addition would project beyond the face <br /> <br /> <br />on the concrete overflow section. the impact of this facility on spillway <br /> <br /> <br />flows needs to be considered. Spillway discharges over the concrete overflow <br /> <br /> <br />section are controlled with sixteen 32-feet by 64-feet tainter gates. The <br /> <br /> <br />initial control of spillway discharge would be accomplished with a balanced <br /> <br /> <br />operation of selected tainter gates until such time the full spillway capacity <br /> <br /> <br />was required. In the event of a flood that would require spillway operation, <br /> <br /> <br />this analysis assumed that sufficient time would be available to remove the <br /> <br /> <br />majority of the hydroelectric equipment that would effect spillway discharges. <br /> <br /> <br />The removal would be Possib~ellwith a crane operated from the roadway ~crOS0S ,1.- <br /> <br />the top of the dam. The sp~ way has never been operated at John Mart~n Dam ~ <br /> <br /> <br />in forty years. The pool elevation has been at or above the spillway crest <br /> <br /> <br />four times in this same period. <br /> <br />c. Powerplant Oppration. <br /> <br />{ <br /> <br />1. This study assumed that any hydropower project at John Martin Dam <br /> <br /> <br />would be a remotely operated project an~ no full-time personnel would be <br /> <br /> <br />required on site for this operation. <br /> <br />D. Power Marketin~. <br /> <br />/ <br /> <br />- <br /> <br />1. Traditionally, development of a hydropower facility by the Corps <br /> <br /> <br />"of Engineers would be solely a Federal responsibility. The Corps of Engineers <br /> <br /> <br />would design. construct, operate, and maintain the facility. The marketing <br /> <br /> <br />agency. in this case the Western Area Power Administration, would design. <br /> <br /> <br />construct. operate. and maintain the necessary transmission system additions <br /> <br />11 <br />