2002-055-RES ACCEPT PROPOSAL OF CARTER & BURGESS FOR PROFESSIONAL ENGINEERING SERVICES TO WATER LOST AND UNACCOUNTED FOR STUDY IN CITY'S WATER AND ACCOUNTING AND OPERATING SYSTEM

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] :I :I :J ~ :! ] J J Proposal Comprehensive Water Distribution System Audit ~ ~ .. , . area which has a moratorium imposed by the State Engineer); and to provide most cost effective infrastructure for the transportation distribution and storage of this water to lands that do not have water. East Canyon Waterline is part of these services. Providing engineering services for design and construction management of 72,000 feet of 30-inch diameter ductile iron high pressure (in excess of 465 psi) waterline. A Booster Station and Intake Structure were also part of the project. Providing engineering services for design and construction management for 6.5 mgd pump station and intake structure, expandable to 22 mgd, to pump water more than 1,100 feet vertically from East Canyon Reservoir to Snyderville Basin. Microfiltration Water Treatment Plant. Providing engineering services for design and construction of 22 million gallons per day water treatment plant. The first phase being 6.5 million gallons per day. Dallas Water Utilities Eastern System Drought Implementation Plan Dallas, Texas The project included the expansion ofthe existing 230 MGD raw water pump station to a firm capacity of 31 0 MGD, and the design and construction of the 241 MGD Lake Fork Pump Station and lOB-inch raw water transmission main. The drought conditions implementation plan developed population forecasts and per capita demands to determine total system demands through 2050. These demands were compared with demands developed by regression- extrapolation analysis in order to determine the final demands used for planning. Cost estimates were prepared to connect Lake Fork into the DWU system including the Lake Fork pump station and transmission line. Additionally, six long range water supply alternatives were evaluated for connecting Lake Palestine, George Parkhouse Carter ::Burgess No.2, and Marvin C. Nichols NO.1 to the Dallas system. Planning level construction cost estimates and O&M cost estimates were developed for each of the six alternatives. The total system costs were in the range of $750 million, and included new pump stations, a new surface water treatment plant, and over 100 miles of large-diameter' transmission lines. Total improvements for the pump station ore estimated to be $14 million in three construction contracts. Four new 68 MGD pumping units and 4,500 HP motors will be installed, along with discharge and header piping. The instrumentation and controls at the facility are being upgraded because the facility will be remotely operated from the East Side Water Treatment Plant after the installation of a new SCADA system. Iron Bridge Pump Station Renovation & Upgrades Dallas, Texas The Iron Bridge Pump Station, originally constructed in 1964 on Tawakoni Lake, has an existing capacity of approximately 220 MGD. It is a significant component in the City of Dallas' raw water supply system, possessing nearly one thi rd of the City's raw water pumping capacity. Corter & Burgess is providing renovations and upgrades to increase pumping capacity to 31 0 MGD, improve system reliability, extend the life ofthe facility for another 30 years and provide the capability of a totally remotely operated station through the use of a SCADA system. The initial phase of the project involved preparation of a design report that included condition assessments and upgrade recommendations for all structural, civil, mechanical, electrical and architectural components ofthe pump station. Key recommendations included re- configuration of four existing 40-MGD pumping units, installation offour new 65-MGD pumping units, replacing piping and valves, intake screens, sluice gates and all electrical, instrumentation and controls. This phase also included providing internal inspections and surge analysis to .