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SJRWMD Alternative Water Supply Construction Cost-Sharing Application Form 2004-2005 2. Purpose. Explain the purpose (s) of the project. (Do not refer to attachments .) Reverse Osmosis .O, water treatment Rrocess involves micron level filtrationthat generates a waste stream by-product referred to as concentrate. Currentl concentrate is dischar e to the Indian River Lagoon where it is commingled with the waters of the intra coastal water way d dis osed . This prgject will provide for the concentrate (initigy 750,000 allons per day and ultimately 1 .9 m d to be rerouted to the Grand Harbor Mosquito Im oundment. At that point the concentrate will be discharged into the mosquito impoundment and mixed with brakish water from the loidian River Lagoon. The brakish water concentrate mixture will be routed through the impoundi aent area through a series of pools and ditches designed to allow positive outfall into the logo t, while allowing fish from the lagoon to travel into the pools to control the mosquito habitat, a restored wetlands will foster the growth of man owths further promoting the development u fish life to heIR control mosquito nuisance. Approximately two miles of 16 " PVC water main wil be consrcted from the Bent Pine RIB Site east along the North Relief Canal to the mo2quito im oun ent site. Several 12ools will be graded at the headworks of the impoundment area for collection f the brakish water concentrate. Several channels will be cut between the pools located at the headworks and the la oon to allow aquatic life from the lagoon to mi ate into the 12ools to harvest mo ' to larvae and man ove habitat. Pum s and associated i in will be constructed from the lagoon t the ponds to allow cone ance of brackish water from the lagoon to be mixed with the brine water for surcharging the impoundment area. 3. Brief description of project. Include approximate dimensions and capacities . (Do not refer to attachments.) A 90 acre designged wetland site with some coastal planes and mosquito bearing on s interspersed is being considered for 12urchase and redevelopment through regading of brackish / b e water collection 12ools and construction of interconnecting channels with the Indian River La oon. Mixin pumps and conveyance piping will be constructed from the lagoon to the collection ods for mixm brackish water with brine. Approximateky Approximately10,560 linear feet of 16" diameter PVC piRe will be constructed from the Bent Pine RIB Site to the mosquito impoundment for -conveyance f uR to 2.25 million gallons Rer clay of brine water flow. A-3