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Attachment #1 Work Order Number 18 Central (Gifford) Regional Wastewater Treatment Facility Permit Renewal Project Understanding The existing Central (Gifford) Wastewater Treatment Facility (CWWTF) operates under Florida Department of Environmental Protection (FDEP) permit number FLA010431 which expires April 22, 2008. The CWWTF was recently expanded from a 2.0 mgd annual average daily flow (AADF) permitted capacity oxidation ditch domestic wastewater treatment facility to a 4.0 mgd rated capacity. The expansion included influent screening, filtration, grit removal, anaerobic and anoxic basins for denitrification, aeration and reaeration, secondary clarification, chemical feed, chlorination and aerobic digestion of residuals. The Central WWTF provides sole service to the Combined Central Service Area with the current 4.0 mgd, AADF of rated capacity. Influent flow may also be transferred to the North W WTF, but is anticipated to be expanded in the future. Sea Oaks W WTF transfers most of the wastewater capacity to the Central WWTF. Land application of reuse includes 2.0 mgd AADF slow-rate public access to numerous sites, and 0 .4 mgd AADF rapid rate land application to Bent Pine RIB 's, all of which are shared between the South, West, and North Regional W WTF ' s. Indian River County Utilities staff has requested Kimley-Horn and Associates, Inc. prepare and submit an application for renewal and respond to requests for additional information (RAI) which may arise from FDEP as a result of the application submittal. The intent is to submit the application by October 25, 2007, six months prior to its expiration date (April 22, 2008) in order to allow for FDEP agency review and RAI response time. SCOPE OF SERVICES The Scope of Services consists of the following: Task 1 — Prepare Application Consultant will prepare a Wastewater Permit Application Form 2A (DEP Form 62-620.910(2)) for Domestic Wastewater Facilities and submit application with attachments to FDEP. The application will be for a permit renewal without any major modifications to the facility. Information from the previously submitted operating permit renewal package submitted in 2003 will be utilized as a basis for preparation of the renewal application. General information will be collected from IRCU and included with the application, including effluent disposal, residuals disposal, description of system influent flows being diverted to the this facility and proposed effluent disposal options in the future. It is assumed that no improvements to the W WTF will be necessary as part of the permit renewal. S:\CVLENG\Miller\lndian River County\Proposals\Central IRCU W WTP Operating Permit Renewal Scope - rev2.doc . Page 1 of 4