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00 ~ <') C\! '. and will allow Reclamation to accurately locatc thc sourcc ofthc sound, Rcfinemcnt of the hydrophonics methodology continues, Decisions regarding replacement or futher repairs of siphon pipes are to be made by , .,,, Reclamation in J unc 1991. Tucson Aqueduct pumping plants . Twin Peaks and Sandario: Reclamation is delaying final acceptance of pumps until manufacturer rebuilds and retests the units, . Brawle)': Three of the five pumps have heen tested. Pump testing is scheduled to be complete by mid-June 1991. . San Xavier: The swilchyard was energized on February 28,1991. Two or the five pumps have been tested, Pump tests at this platll arc scheduled to be complete by mid-June 1991. . Snyder HiJland Black Mountain: Structures for both plants are completed. The switchyard is scheduled to be energized August )991. All pump and motor units are on site. and installation is nearly complete. Pump testing is scheduled to begin at Snyder Hill in August 1991 and at Black Mountain in September 1991. Tucson Aqueduct New Wadd.ell Dam Construction of the aqueduct is eompletc except for repairing 600 feet of canal lining on Reach 3, nonhwest of Tucson. The repair is scheduled to be complete in August 1991. Completion of some control and turnout structures remains on the )inal15 miles of the system. Installation of control cables on the aqneduet from Twin Peaks Pumping Plant to the end of the aquednet is underway, Erection of transmission lines on the final eight miles of thc aqucduct will bcgin in August 1991. The pipclinc/tunncl system that will deliver water to the City of Tucson's storage facility is complete except for pressure grouting; this work will be complete in May 1991. The upstream and downstream end of both tunels that will deliver CAP water to Lake Pleasant are complete, The initial concrete placements for the intake towers that will service the tunnels arc 80% complete (up to elevation 1660 fcet), Closurc section for the PG Plant manifold pipe and steel tunnel liners is complete. The (unnels and towers are scheduled to be complete by September 1\191. Excavation of the dam fonndation is complete. About 5 million eobie yards of the upstream and downstream sbell, zone .1 core, and filter and drain materials of thc dam embankment have been placed, and this is 31 % complete. The dam embankment eleva- tion is up to elevation 1,5OU feeL Tbe embankment is scheduled for completion by Sep- tember 1992, South Park Road is complete and being used as a dctour for public tramc around the spillway construction. Excavatinl1 for the spillway." ha~ hegun. New Waddell Dam Pumping/Generating Plant Structural wurk on the plant i!-l compklt:. JnslalJalilHl of pump/g.enerator <.:omponenl...., such as suctiollwbcs and scroll cases, is underway. Work on the pl<Jnt's swilchyard con. tinues and is sehednled for completion April 1992. Initial work on electrical wiring and mechanical piping has begun.