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City of Pleasanton Phase 1A Recycled Water Distribution System Design Final Draft TASK 2: OPERATIONS PLAN Consultant shall prepare an operations plan documenting the range of operating conditions that will occur over time. The operations plan will focus on the initial Phase 1 configurations and the evolution of operations that will occur through Phase 1B implementation(i.e. initial closed system with small demand and a single supply to full Phase I system with elevated storage and two supply points, to Phase 1B implementation with expanded demand conditions and system configuration). The plan shall include guidance tables that outline different flow rates and demand conditions and the operational approach and strategies that should be considered. Subtask 2.1: Coordinated Recycled Water Operations Meetings Consultant and City shall meet with DSRSD and Livermore operations staff to review initial model results based on discussions from initial meetings with the two suppliers under Task 1. This operations meeting will focus on the following: • Identify how and when recycled water will be delivered to the Pleasanton system o Max Day and Peak Hour o Max Month o Lower Demand Periods • Discuss daily information DSRSD/Livermore need to schedule deliveries • Discuss SCADA data DSRSD/Livermore would find desirable regarding the Pleasanton distribution system • Discuss options for data transfer to the DSRSD/Livermore SCADA systems • Understand how DSRSD/Livermore staff makes daily estimates of next day demands to develop delivery requests • Understand the seasonal water age experience and the annual flushing program and strategy Subtask 2.2: Prepare Draft Operations Plan Consultant shall prepare a draft Operations Plan to document the basic control strategy that will be implemented for the Pleasanton system and the control system elements needed to interface with DSRSD and Livermore. Consultant shall also develop operations descriptions and framework for the various operating scenarios modeled and/or discussed with DSRSD and the City of Livermore. The operations plan is intended to be an evolving document that provides initial guidelines for operating the system consistent with the supply delivered from DSRSD and Livermore. The document will be used by City operations staff to fine tune operations as determined through the initial operations of the system. The plan will also provide guidance on minimizing residence time in the system and a procedure for periodic flushing of the system to minimize water quality problems, including potential growth from nitrification which is currently experienced in the DSRSD/DERWA system. The draft operations plan is envisioned to be reviewed by the City of Pleasanton, DSRSD, and Livermore and shall be used to facilitate discussion and collaboration on the best approach for operational coordination. Subtask 2.3: Prepare Final Operations Plan Consultant shall prepare the final operations plan that will address comments by the stakeholders and the City. Consultant will conduct a review workshop to collect comments on the draft Operations Plan and resolve issues. Consultant shall maintain a log of comments with actions/responses to comments. Task 2 Assumptions—Operation Plan • City and Consultant shall prepare for and participate in up to one meeting with each supplier to review model results and refine operational approach. Scope of Work Revs Page 3 of 17 August 20,2014