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515 S. Flower Street T 800.426.4262 <br />181' Floor <br />Los Angeles, California 90071 <br />www.woodardcui-ran.com <br />Via Electronic Mail <br />May 26, 2023 <br />Heidi Chou, PE <br />Woodard <br />Public Works Agency <br />City of Santa Ana <br />& Curran <br />215 S. Center Street <br />Santa Ana, CA 92703 <br />Re: On -Call Sewer Hydraulic Modeling Scope of Services <br />Dear Ms. Chou: <br />Woodard & Curran, Inc. (Woodard & Curran) is pleased to continue services providing hydraulic <br />modeling support to the City of Santa Ana (City) for tasks related to capacity planning for the <br />City's wastewater collection system. Please see the description of scope of services below. <br />SCOPE OF SERVICES <br />Task 1 — Project Management and Coordination <br />Woodard & Curran will monitor project budget, prepare invoices, and communicate with the <br />City by telephone and e-mail regarding project status and issues. A one-year contract period <br />is assumed. Woodard & Curran will track costs under a separate subtask for each model <br />evaluation associated with a developer project so that the City can determine appropriate costs <br />to be charged to developer. <br />Assumptions <br />• Any required meetings are assumed to be included as part of the model evaluations <br />under Task 1. <br />Task X — Model Evaluations <br />Under this task, Woodard & Curran will run the model (or expand the model to include <br />previously unmodeled sewers) as requested by the City to: <br />1. Assess the impact on sewer capacity of proposed development projects and determine <br />where additional capacity would be required (e.g., increased pipe size or larger pump <br />station capacity) if needed to handle increased flows caused by the new developments; <br />2. Evaluate "what -if" scenarios related to proposed new or improved sewer pipelines or <br />pump stations; or <br />3. Update the model and capacity assessment based on permanent changes in the sewer <br />system. <br />