2004/02/25 Council Agenda Packet

Page 2 9 2/11/2004 Exhibit A We understand that as a part of this project,Snohomish County PUD is also looking into several aspects related to the grid replacement. Their first task is to determine the overall ownership of the in-plant grid system based on their construction records. This will include the overhead distribution system and the electrical services related to the Plant Finished Water Pump Station project. The PUD is also developing the cost of converting the existing in-plant overhead distribution to underground, for the city's consideration. Initially the PUD will develop an initial cost per lineal foot for the under-grounding of the in-plant power system The second category relates to"non-grid replacement" items (Task 4). This includes evaluating the existing facilities electrical services for incorporation of electrical power monitoring. We understand the power monitoring is intended to be used in the future for the evaluation of converting the plant utility power billing method from the single meter (master meter at the plant entrance) to multi-drop metering at all services (not in this scope). The intent of this project is to provide the city with information necessary to develop a implementation plan,budgets,and schedules for capital improvement projects related to the in-plant electrical system consistent with the plant 15—20 year plan. SCOPE OF ENGINEERING SERVICES Based on the understanding of the project,we have developed a scope of services for the City to be able to reach the project goals. Each task is relatively independent from the others. However,Task 1 must be competed since the information developed as a result of Task 1 is required for Tasks 2,3,and 4. Tasks 2, 3 and 4 and can be performed concurrently or not at all according to the City's needs. Task 1- Initial Load Determinations 1. Meet with City and the PUD at the Water Filtration Plant (WFP) to discuss the project requirements and to develop a preliminary understanding and scope for the work to be performed. 2. Review plant expansion documentation from evaluations and studies being developed by others that identify plant expansion needs through 2020. Expansions include: • The expansion of the flocculation/filtration and chemical feed systems • The addition of UV/Ozone disinfection • The modification of the chlorination system • The addition/expansion of the plant clearwell • The addition of plant water pump station (in the 290kW generator building) 3. Develop an estimate of future plant loads based on information provided and evaluated in #2 above. This load information is to be used in the determination of a concept for the ultimate configuration of the in-plant power distribution system. 4. Meet with the city staff at the WFP to discuss the findings of the estimated future loads and gain consensus before proceeding with the study. 5. Incorporate comments from the meeting identified in #4. Task 2- PUD Related Power Reliability Project Components: 1. Provide the finalized load findings to the PUD to assist them in their development of their initial costs associated with the under-grounding of the in-pant power distribution system. 2. Based on the load information developed in Task 1 and cost information ($per lineal foot) developed by the PUD,ECS will develop a proposed layout for the in-plant power distribution. This information will be presented and discussed with the city at a meeting at the WFP to gain consensus on the layout. 45