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I. I' :1 I ~ 1 r ,I I' i. I I I f r 1"'" - iJ I' ~J MAIN AQUEDUCT 19 at different times as the water arrived at the successive plants. This method involved a very large mimber of starts and stops for the pumps, which was considered detrimental to the equipment and it seriousiy interfered with the delivery of power to Phoenix. Th.e operating schedule adopted for the immediate future is to pump continuously at all plants for a sufficient number of days each month to deliver the required quantity of water and let the pumps stand idle the remainder of the time. The organization required by this program includes 63 men on operation and maintenance of the pumping plants, 12 men on the maintenance and patrol of the transmission line, and 3 employees at the La Verne telephone exchange. This force provides for con- tinuous attendance at all plants with one-man shifts, continuous dispatching and telephone service, patrol of transmission and tele- phone lines, and maintenance of all equipment in plants, lines and camps. Messes and dormitories are operated at Gene and Iron Mountain camps. The field supervisory force consists of a field superintendent and one clerk. A speciai agent is located at Gene camp and a first-aid nurse at Iron Mountain. The following tabulation shows, for the fiscal year July I, 1940 to June 30, 1941, the pump-hours of operation, the energy trans- mitted from Boulder over District transmission iines and used for pumping and camp services or delivered to others, and the acre feet of water pumped. PLA~T Intake ".. .................__u Gene ........... Iron ..................... Eagle ...~...._ Hayfield PUMP HOURS OF OPERATION WATER PUMPED ACRE-FEET 86,408 71,347 55,78., 55,014 55,269 KWHRS. FOR PUMI'ING 29,969,970 25.243.7W 9,822,420 28,827.700 28,838,100 122,701,900 4,992.7 3,655.1 3,098.6 3,203.7 3,195.7 KWHRS. Transmitted from Boulder. .....m..........m. 265,371,610 Delivered to Phoenix, Arizona ." .m... .hmn,... 132,054,240 Delh'ered to Purker Dam for operation and construction purposes nm........m 2,613,495 Delivered to U. S. Indian Office, Parker, Arizona _ 130,467 A general inspection and overhaul of equipment at the pumping plants was undertaken in December 1940. The pumps were found to be in excellent condition with very little evidence of cavitation.