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Show 94 THE ALL-AMERICAN CANAL. Structures: 'Sluiceway1................................................ $325,000 Check1.................................................... 22.000 Highway bridge............................................ 34, 000 2 culverts for surface drainage.........................•...... 40,000 1£ miles telephone......................................... 340 Total................................................... 421,340 15 per cent contingency.................................... 63,201 ------------$484,541 Grand total...........................................,.......... 709,019 Estimate for construction of all-American canal of capacity to serve the Imperial Irriga' tion District. (Upper power site, Pilot Knob, opposite Rockwood gates, to Pilot Knob, 6,000 second-foot canal.) Excavation: Earth, 702,000 cubic yards, at 20 cents..................... $140,400 Rock, 982,000 cubic yards, at 75 cents...................... 736,500 Total.................................................. 876,900 15 per cent contingency.................................. 131,535 ------------$1,008,435 Structures: Railroad bridge.......................................... 45,000 Culvert for surface drainage............................... 20,000 1$ miles telephone line................................... 340 Total................................................. 65,340 15 percent contingency...........-...................... 9,801 ------------ 75,141 Grand total.................................................... 1,083,576 Estimate for construction of all-American canal of capacity to serve the Imperial Irrigation District. (Pilot Knob to west side tp*i> canal, 6,000 to 1,500 second-foot canal.) Excavation: Earth, stations 385 to 470, 1,663,000 cubic yards, at 20 cents...................I........................... $332,600 Earth, stations 470 to 1525, 43,820,000 cubic yards, at 30 cents............................................... 13,146,000 Earth, station 1525 to end, 9,216,000 cubic yards, at 18 cents............................................... 1,658,880 Blow sand,2 500,000 cubic yards, at 30 cents...........,. 150,000 Rock, 294,000 cubic yards, at 75 cents.................. 220,500 Total.............................................. 15,507,980 15 per cent contingency............................... 2,326,197 ---------------$17,834,177 1 Structures to be located at place selected for power site or permanent wasteway (see " Power development," p. 97). * Estjmate of amount of sand that win blow in during construction. |
