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o Bermuda Bay: (0.090) Total current flow available to new customers: = 0.512 MGD 0.512 MGD Service Area Evaluation: The County desires to increase reuse flows to add (in a phased approach) barrier island reuse water customers including but not limited to Windsor and Johns Island, and other surrounding communities. At John's Island and Windsor, irrigation systems exist for both golf course and property owner association (POA) landscape improvements. Many other communities along the North barrier island operate irrigation systems for common areas and in many locations, the developments have centralized irrigation systems for all the residential properties. It is expected that demand for reuse water from all the communities on the North barrier Island from Old Winter Beach Road to Windsor could approach 4.2 MGD Wabasso Causeway to A -1-A 0.141 MGD A -1-A, from CR 510 north to Windsor 1.369 MGD A -1-A, from CR 510 south to Baytree (IRCDUS' *) 0.454 MGD A -1-A, from Marbrisa to Old Winter Beach VB SA*) 2.255 MGD Total: 4.219 MGD *SA = "service area" Reference Appendix B "Service detailed evaluation of the potential of the total demand for irrigation q North Barrier Island. alua`tion — Estimated Reuse Water Demands" for a rea on he North Barrier Island, including an estimate br existing and proposed developments on the Hydraulic Analysis: A hydraulic analysis of the proposed IRCDUS North Barrier Island reuse transmission system / pipe network was modeled using WaterCAD to help determine system component requirements, including reuse main size and pump system capacity (Refence Appendix C). Within the hydraulic models prepared to analyze the delivery of reuse water, the pumps at both the existing Hobart and proposed Sea Oaks storage and pumping facilities were modeled as a tank with a water elevation equivalent to 85 psi (195 ft. above grade). Essentially, the model assumes that the available reuse water is not limited and delivered at 85 psi from the pumping facility. The open-ended pipes at the delivery points were modeled based on the assumption that flow control was provided at all delivery points equivalent to the estimated average daily flow at each development / community. A peak demand factor was not used (PF = 1.0). It is acknowledged that individual irrigation systems are generally designed to deliver daily water needs in a much shorter time period (less than 24 hours). However, the delivery of reuse water is assumed to occur evenly throughout any given 24 hour day — due to proactive restrictions and scheduling controls by IRCDUS which ensure a nearly constant delivery of reuse water over each 156 6