2003/03/26 Council Agenda Packet

Exhibit A U 2.5—EWPS Discharge Piping and Transmission Main Evaluation (City) • Verify capacity of 30-inch transmission main in Casino Road that conveys water from EWPS to Reservoir 6. Determine required capacity, as well as frequency and duration of potential high velocities during future peak demand conditions. • Verify available and required capacity and associated velocities. City to provide any additional system information needed and verify system configuration represented in the hydraulic analysis model. • Identify advantages, disadvantages, and costs associated with replacing the transmission main or installing a new, additional transmission main. The new transmission main alternative will consider the main route and crossing location along Evergreen Way. 2.6—AWWD Pump Stations Evaluation (AWWD) The focus of evaluations at the AWWD Pump Stations will be to identify issues, protocols and impacts to AWWD associated with use of the existing and proposed infrastructure, pumping and storage facilities to provide water to the District and possibly to the City during power outages over the next 20 years. The evaluation will address: • How much backup water should AWWD provide now and through the 20 years at 5 year intervals. Coordinate results of this task with work activities identified under Task 2.1 (Standby Power Needs Assessment). Identify AWWD policy issues associated with this alternative. • Identify what new facilities or facilities upgrades are required, and the timing of those upgrades, to provide for the amount of water identified above. Consideration will be given to the upcoming SCADA improvements currently under planning by AWWD. • Identify additional security issues that should be addressed as part of this project. Deliverables Prepare a technical memorandum at the conclusion of each Task (2.1 through 2.6). Each technical memorandum shall summarize results of evaluations and present information in a format that clearly identifies: • Background information and relevant technical considerations associated with each alternative. • Results of evaluations including technical findings, cost and operations considerations,permitting issues and related information. 4 i% Phase I Scope(2/28/03)