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-- , , t.") (,.- N c. . Brawley and San Xavier: All units in both plants have been tested. The plants are operational. . Snyder Hill and Black Mountain: Structures for both plants are complete. The switchyard is scheduled to be energized January 1992. All pump and motor units are installed. Pump testing is scheduled to begin at Snyder Hill in March 1992 and at Black Mountain in Apri11992. Tucson Aqueduct Construction of the aqueduct is complete. Repairs to approximately 600 feet of canal on Reach 3 northwest of Tucson were completed in early September 1991. Repairs to Tucson Aqueduct Reach 5 canal lining were required at three Pima county sewer line crossings. The crossings were installed by Pima County prior to construc- tion of the canal. Subsequently, settlement occurred and the lining cracked. Repairs are being made by Central Arizona Water Conservation District (CA WCD). Erec- tion of transmission lines on the final eight miles of aqueduct will begin later this year. Construction of the Del Bac substation is underway. Tucson Aqueduct System Reliability Investigation Investigation of potential CAP water storage sites in the Tucson area is continuing. Following an initial evaluation of 11 surface storage sites and six underground storage sites, two surface sites and two underground sites have been selected for further study. A recent Tucson water proposal combines surface storage with the use of some of its existing wells for reliability. In addition, the Denver Office is exploring the possibility of constructing bypass facilities for the CAP pumping plants south of Phoenix. Selection of recommended action is expected by early 1992. New Waddell Dam The CAP tunnels that will deliver CAP water to Lake Pleasant are complete. All major concrete work for the CAP intake towers also has been completed. The gantry crane bridge, the bridge that joins the two intake towers, has been set in place and the concrete bridge deck placed. In addition, the 70-ton gantry crane has been raised to the top of tower No.1 where assembly work will continue. The two 76,OOO-pound wheel-mounted gates also have been placed on top of the towers. Preliminary work on the River Outlet Works (ROW) tunnel continues. It is now anticipated that actual construction in the ROW will begin in November 1991 and is scheduled to be completed by September 1992. EBASCOjLosinger, J.V., contractor for New Waddell Dam, Stage II, continues to place zoned embanlonent at a rate of approximately 52,000 cubic yards per day. Approximately 10.5 million cubic yards of embanlanent have been placed to date, which represents over 60% of the material required in the dam. The dam embank- ment is at about elevation 1581 feet with crest elevation at 1728. Work is scheduled to be completed on the embanlonent by September 1992. Excavation in the service and auxiliary spillways has been completed, and preparations are being made for the required concrete placements.