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1. Under the contract with Basic Management, Inc., the Water District may withdraw 5 million gallons daily from the Lake Mead line. When the District constructs certain improvements in capacity, 13£- mgd may be taken. The improve­ments to the existing supply system include the installation of new pumping equip­ment at the Lake Mead intake, and additional boosting capacity at the pumping station located 2^ miles northwest of intake. Two new pumping stations will be constructed, one at the take-off point 3 miles northeast of Henderson, and one at a point about halfway between Henderson and Las Vegas. The existing intake consists of six seven-stage deep well turbine pumps with 182-foot columns suspended into deep water from a steel cantilever structure located on Saddle Island in Lake Mead. The intake pumps boost water 2^ miles to the main booster station reservoir, at an elevation of 1400 feet. The lake surface may vary in elevation from 1229 to 1050 feet, causing the static head on the pump to range between 171 and 350 feet. It is proposed to replace the I existing intake pumps with equipment of increased capacity in order to provide/ for the 13^ mgd increase. The pumps to be removed will be installed in the new pumping station to be constructed at the Las Vegas take-off, and will then boost water on to Henderson through the existing 40-inch pipeline. Additional electrical facilities will be required to take care of the increased pumping load. The main booster station presently has six pumps with a capacity of about 30 mgd when five pumps are operating and boosts water to the Henderson terminal reservoirs at an elevation of 2035 feet, with a static head of 635 feet. Under the proposed arrangement the main booster pumps will pump water to a new 9