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TETRA TECH Mr. Arjuna Weragoda, P.E. Indian River County Department of Utility Services June 2, 2020 Page 2 R-002 includes a county -wide public access reuse service area for irrigation of golf courses, residential developments, business parks, commercial parks, industrial parks, other landscape irrigation, and industrial uses/cooling water. R-002 also includes a 0.40 MGD-AADF permitted capacity rapid rate restricted access reuse system that includes seven off-site rapid infiltration basins (RIBS) referenced in the Central Regional WWTF permit. The RIBS also provide 14 million gallons (MG) of wet weather storage/disposal during wet weather conditions The WWTF is operating under current Florida Department of Environmental Protection (FDEP) wastewater permit number FL0041637. The IRCDUS WEST Regional WWTF FDEP operating permit will expire on April 11, 2021. In accordance with Rule 62-620.335, Florida Administrative Code (F.A.C.), permittees who wish to continue to discharge subsequent to the expiration date of their existing wastewater permit shall submit an application for renewal no later than one -hundred and eighty days (180) prior to the expiration of their current permit. The permit renewal application and fee must be received by the FDEP by October 13, 2020. II. SCOPE OF WORK IRCDUS has requested that Tetra Tech provide engineering services to prepare the permit renewal application with necessary supporting documents per the Continuing Contract Agreement for Engineering Services Dated April 17th, 2018. Tetra Tech's proposal to provide the requested engineering services is presented in this scope of work. In addition to the permit application Forms 1 and 2A, the IRCDUS West Regional WWTF permit renewal will require the following items in the permit renewal package per Chapter 62-620, F.A.C., Wastewater Facility Permitting and The Guide to Wastewater Permitting: Task 1: Kick -Off Meeting and FDEP Pre -Application Meeting 1. Tetra Tech will prepare for and conduct a kick-off meeting with IRCDUS. Tetra Tech will prepare and distribute meeting summary to attendees. 2. Tetra Tech will prepare for and conduct a pre -application meeting with IRCDUS and FDEP. Tetra Tech will prepare and distribute meeting summary to attendees. Task 2: Historical Data Analysis 1. Evaluate monthly average daily flows, three-month average daily flows and annual average daily flows, permitted capacity and flow trends. 2. Evaluate seasonal variations 3. Characterize the flow and loadings currently being treated at the plant based on the most recent 3 years of data.