2015/11/10 Council Agenda Packet

Attachment A—Statement of Work 1 Scope of Work Task 1—Vehicle Performance Assessment CEM will work closely with project partners and the fleet managers to understand and identify electric bus platforms of interest. CEM will develop dynamic simulation models of the vehicle powertrain to assess energy consumption and efficiency. The goal of this task is to understand the vehicle's energy consumption and ability to make the route and provide the services required by the fleet. The following subtasks are envisioned for completing Task 1. Subtask 1.1—Obtain Vehicle(and Charger) Specifications CEM will work closely with the Everett Transit fleet manager to obtain vehicle specifications for up to three electric bus models and a fossil fuel counterpart. These specifications will also include the vehicle charger for the electric buses. The fleet manager will be responsible for ensuring CEM obtains all data necessary from electric bus vendors to provide modeling services. This data includes,but is not limited to, engine/motor torque-speed curves,fuel/energy storage specifications,vehicle drivetrain ratios and efficiencies, and vehicle physical specifications, such as frontal area,tires, and weight ratings. If this data cannot be provided by Everett Transit, CEM will use publicly available information from each bus vendor and develop powertrain models based on typical specification for similar motors,batteries, or other system components. Subtask 1.2—Develop Vehicle Route Models CEM will work closely with the Everett.Transit fleet manager to identify and collect data on up to three routes deemed typical and suitable for the alternative fuel vehicles under • consideration. CEM will rely on the fleet manager to arrange a time for CEM to conduct data collection on a similar vehicle using a GPS data logger. Alternatively,the fleet manager may provide CEM with speed versus time data from an existing dataset for their vehicle(s),provided that the data sample rate is 1 Hz or greater. Subtask 1.3—Construct Vehicle Powertrain Models CEM will build a detail dynamic model of the proposed electric buses. The models will use data obtained from Subtask 1.1 and will simulate operation of the vehicles on the route obtained in Subtask 1.2. Subtask 1.4—Exercise Vehicle Models CEM will run the vehicle model and evaluate its efficiency, energy consumption, and ability to perform on the fleet route. Task 2—Life Cycle Cost Analysis CEM will work closely with the Everett Transit fleet managers to assess the life cycle cost of the electric buses under consideration.' The results generated by CEM in Task 1 will provide the basis for the life cycle cost analysis in Task 2. The goal of this task is to identify fuel costs and 12 71