2005/09/07 Council Agenda Packet

EXHIBIT A Scope of Professional Engineering Services Long Term Water Filtration Plant Power Reliability Study PROJECT UNDERSTANDING The goal of the project is to develop a more reliable power distribution system within the plant. During recent storms,the power within the plant has been disrupted from in-plant failures (from a tree contacting the overhead lines) in addition to PUD outages. As the electrical distribution system age increases,there is also the potential of internal plant equipment failures causing plant-wide power failures. There are many concepts to improve the system reliability that have been reviewed. This study is intended to document those concepts, identify any new concepts,develop a Pros/Cons matrix for each option, develop order of magnitude engineering/construction costs and present worth cost comparisons of the concepts,and identify potential cost savings related to energy charges for the options. The initial phase of this project was to develop the long-range power requirements based on future plant expansions. (Task 1 completed in 2004). There were two categories that have been identified for these power reliability concepts (complete listing identified later in this letter):"Grid replacement" and"non-grid replacement". The first is in the general category of grid replacement (Tasks 2 &3).This work focuses on the construction of an underground power distribution system to replace the current in-plant overhead distribution. This work includes the conversion of some in-plant building services for overhead (from pole mounted transformers) to underground (pad mounted transformers). This work also includes the review of a second stand-by power feed from the 1250kW generator to the back-wash pumps. 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. 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 an 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,the following scope of services for the City to be able to reach the project goals. Each task is relatively independent from the others. 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 2 - PUD Related Power Reliability Project Components: 1. 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. J:\UP-3200_WFP_Power_Study\Contract No 2\UP-3200 Exhibit A-2005.doc I