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The TRHA Team is proposing the following scope of work to complete the Recycled Water Master Plan. It is based on the scope of work in the City of Santa Ana's (City's) RFP and includes a detailed description of the intended methodology and work plan to be utilized in addressing the scope of work. Per the City's request, a detailed Fee Proposal is included in a separate sealed envelope. It details cost per task and project staff discipline. 1. COMPUTERIZED HYDRAULIC MODEL A. General TRHA will create a computerized recycled water model for use in evaluating distribution facility requirements in accordance with AWWA M32 guidelines. The proposed recycled water distribution networks will be modeled to allow for a phased implementation strategy and for anticipated growth. B. ContentJTasks TRHA will perform the following hydraulic modeling tasks: 1. Build Model TRHA will shall collect all pertinent data to build a computer model including, consumption data, pipeline GIS, facility locations and service area maps. It is assumed that data available to the City will be provided to TRHA for the modeling effort. Source and operations data will be requested of OCWD, which may have an existing computer model of the GAP system. TRHA will construct the model using the latest version of KYPIPE. This final model can be uploaded other platforms because it is a GIS based model. The hydraulic model will be used to determine: • Distribution system pressures, • Maximum Day Demand, and • Peak Hour Demand. 2. Calibrate Model TRHA will develop calibration criteria and perform associated field tests to successfully calibrate the model. TRHA will work with City staff to determine an acceptable level of accuracy for the calibration effort. TRHA will develop planning and operational criteria to analyze/simulate the efficacy of proposed recycled water distribution facilities. Three supply options will be modeled, first, GAP pressure alone with direct connections to the GAP, second, reservoir and pump stations taking a constant flow from the GAP and expanding the system using pump stations, and third, reservoirs and pump stations from the GWRS. The final recommended system may be a combination of several of the models. The TRHA Team will review the storage requirements based on anticipated recycled water availability and anticipated customer use. We will utilize the list of City -owned properties to develop a list of up to three (3) potential locations for recycled water reservoirs. The recommended model would further be refined to reflect system expansion into the near-term (next 5-10 years) and long-term build out (year 2040). The most cost- effective projects will be identified for the near-term expansion program. C. Deliverables TRHA will deliver the following items under task 1. Computerized Hydraulic Model: • Pipe sizing, 1. Technical Memorandums with • Reservoir sizing, pertinent information about the • Pumping conditions, Firm Team, Understanding of Need and Approach, and Scope of Work Page 9