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C & W engineering Inc. Consulting Engineers — Electrical • HVAC • Plumbing 6903 Vista Parkway North, #10 West Palm Beach, FL 33411 (561) 642-5333 June 2, 2023 Mr. Nick Black, P.E. Kimley Horn & Associates, Inc. 1920 Wekiva Way West Palm Beach, FL 33411 Subject: West Regional Wastewater Treatment Facility (WRWWTF) Effluent Reject System Electrical Engineering Services Proposal Rev1 C&W Ref. 236614 Dear Nick: I am pleased to submit this revised proposal for your consideration for Electrical Engineering Design Services for the IRC West Regional WWTF two new 30" motorized Butterfly valves. These valves will allow the facility to have the flexibility to direct excess overflow to either the Wetland ponds, or the RIBs (Rapid Infiltration Basin) along with related power and control/field instrument improvements. The revised proposal includes design through permitting, a bidding phase, and also a construction services phase. Proiect Understanding: The existing WWTF currently has no equalization storage for the treated effluent and this limits its operation flexibility during wet weather/peak flow situations. The proposed construction of two 30" motorized butterfly valves is to provide flexibility to plant staff so they may offload excess treated effluent to either the wetland ponds to the north, or the RIBs to the south. This solution provides some time for the facility to get by peak flow conditions in the meantime before having to build a ground storage tank and transfer pump station. The proposed scope of engineering design services would provide a new electrical feeder to each of the two motorized 30" butterfly valves, including providing control through the existing PLC system and plant SCADA, along with some local control station(s) so they may also operate the opening and closing of the butterfly valves electrically.