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Lagoon Legacy Project: G <br />Main Relief Canal Storm Water Treatment Area. Presently storm <br />water from the COVB flows, without any significant treatment, into the <br />Main Relief Canal and then to the Indian River Lagoon. There is a <br />significant area of Salt Water Marsh where the Main Relief Canal <br />drains into the Lagoon. (The area under, and to the north and south, <br />of the Miller Barber Bridge where it leaves the mainland and begins its <br />assent towards the Lagoon.) <br />'* The salt water marsh under the bridge already has a number of roads <br />and paths which would be ideal for redesign with pumps and <br />structures to slow -the flow of water and divert it through passive <br />remediation areas. This allows sediment to drop out of the water, (and <br />periodically be mechanically removed) and for nitrogen (N.) removal <br />by plant uptake (as well as for the nitrogen (N) and phosphorus (P) to <br />be periodically harvested and removed). <br />• Cost: Significant <br />Benefits: remove nitrogen (N) and phosphorus (P) sediment and other <br />