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~o 'j 3 'l~ T R 0 POL I TAN IV A T F: R D 1ST R leT tiago Lateral at the control tower, and to the Orange County muni- cipal Water District fur replenishing the undergronnd basin in Orange County, Softened wuter is supplied to Orange County Municipal Water District frum La Verne through the Middle Feeder, the westerly 12 miles of the Lower Feeder and the West Orange County Feeder and Extension, as well as directly through the Orange County Feeder, After the water treatment plant of the Lower Feeder is constructed, easterly of the City of Brea, the line west of the plant may be used to fU!'l1ish filtered unsoftened water through the West Coast Feeder to the southern and weste!'l1 areas of Los Angeles County to re- plenish the underground storage basins and to prevent salt water intrusion along the coastal area extending southerly from E] Se- gundo or it may be used to furnish treated water to augment the supply of softened water that can be delivered to the Orange County Feeder, the West Orange County Feeder, the Midd]e Feeder and West Coast Feeder, The Santiago Lateral originating at the Santa Ana Canyon Con- tro] Tower on the Lower Feeder extends 10,1 miles southerly to the Santiago Reservoir, a privately owned storage basin, The line varies from 72 inches in diameter to 48 inches, with designed capacities of 250 cubic feet per second to the north side of the Santa Ana River, 200 cubic feet per second to the south side of the river, 125 cubic feet per second from the river to the service connection of the City of Anaheim and 100 cubic feet per second be,}'ond. 'Vater for the Orange County Municipal Water District for recharging the under- ground basin is discharged into the river from the control tower or delivered from the Santiago Lateral to the Anaheim Union Water Company irrigation system and then deliverer! to the infiltration area for the underground basin. Ne'w Lhlf:8 Completed dUl'1u[f 1961 Two new feeder lines originating from the Lower Feeder were completed during May and June of 1961. The East Orange County Feeder. a :3,0 mile long, 60-inch diameter pipe line, was completed on June 16. 1961 at a cost of $1,806,000, The feeder originated on the Lower Feeder north of Y orba Linda and extends to spreading grounds adjacent to the Santa Ana River near Atwood, The West Coast Feer]er, a 14,6 mile long, 67-inch and 61-inch diameter pipe line. was completed on May 16, 1961 at a cost of $9,000,000, The line originates on the Lower Feeder just east of the Middle Feeder in South Gate and extends through the Cities of South Gate, Downey. Lynwood, Compton, and Hawthorne to EI Segundo at El Segundo and Aviation Boulevards, The line is inter- connected with the Palos Verdes Feeder at EI Segundo and Avalon Bonlevards, which will permit augmenting the flow in the lower reaches of the Palos Verdes Feeder,