04/23/2019 (3) - Laserfiche WebLink

Home Browse Search

The improvements can be phased utilizing both system models C-2 and C-3:. o Phase 1: Limit the construction to just transmission main and distribution main system components (the pipe network) of system C-2 (and as provided in C-3). o Phase 2: construction of the 3.0 MG reuse storage tank and pumping facilities. IRCDUS will monitor the future growth of the reuse water demand and decide when to implement Phase 2. The specific system recommended are the systems modeled in C-3 and C-2, implemented as a phased project. The system consists of the following: • Phase 1 (system C-3): All reuse to the barrier island is fed from Hobart Tank and pumps. There is not a new tank or pumps at Sea Oaks at this time. Existing 16" transmission line on CR 510 to A -1- A, which feeds the existing 8" line north to Windsor, and feeds both a new 16" line and existing 8" line south to Sea Oaks (parallel mains). These parallel lines feed into a new 12" line that runs from Sea Oaks south to Old Winter Beach Road. • Phase 2 (system C-2) From the Hobart Tank and pumps, an existing 16" 1-A, which feeds an existing 8" line north to Wien line south to Sea Oaks where reuse will b facility will pump the reuse water into the which runs north to Disney, and a new 12" new Beach Road to feed JI, the Shores a trans ission line runs on CR 510 to A- sor (an Orchid) and feeds a new 16" sstoreUn a ne 3 tank (3 MG). A new pump 1stn �b�tion lines, including an existing 8" line line which routes south to Old Winter System C-2 is recommended as a final • It provides high and consiste • It relies on the Hobart tank Windsor (1.369 MGD) twhich from the new Sea 0 • The 3.0 MG tank 188% of daily flow flow requirement; Dept utio •cause: pres ure t' roughout its service area. an • e amping, acilities to deliver pressurized water to Orchid/ reduces he volume of reuse water going to and pumped stora tank and pumping facility to only 1.607 MGD. rovide ar ple storage and buffer for a system with tank capacity at om eer%ded min. storage capacity is equivalent to 100% of daily — Tech manual no. 5-813-4). • 1.607 MGD flow requires a'min. 1115 GPM pump capacity (ADF). SBS recommends that the pumping facility mimics that at the existing Hobart reuse storage tank and pumping facility. This system has (1) 250 gpm (at 195 ft.) jockey pump and (3) 850 gpm (at 195 ft.) service pumps. The system is designed to have any two of the three 850 gpm pumps in operation at one time, with a total capacity of 1700 gpm (2.4428 MGD ADF). The additional pump capacity (1700 gpm vs 1115 gpm) provides a buffer for any unanticipated peak demands caused by multiple irrigation systems unexpectantly running simultaneously • The system can provide additional capacity (up to 3.505 MGD - reference model D-2). Additional requirements: 1. Obtaining and delivery of adequate reuse water. There is an estimated 3.116 MGD potential demand from existing and proposed communities on the North Barrier Island for this system recommendation, but only 1.097 MGD available under current operating conditions. Until and/ or in addition to the anticipated future Indian River County growth (with corresponding increases in wastewater generated), IRCDUS may want to pursue the availability of other water sources, such as mixing surface waters with the reuse waters 164 14