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ATTACHMENT A (template) PROJECT WORK PLAN Please complete this form with as much detail as passible and if additional funds have been appropriated make this cumulative I. GRANTEE/PROJECT INFORMATION: Grantee: INDIAN RIVER COUNTY Project Title: EGRET MARSH STORMWATER PARK— PHASE I DEP Grant #: LP6822 II. FUNDING PLAN: Category of Expenditure LP Grant Funds Provided Match Required Total Funding Professional Services Construction & Demolition $7509000 $39190,000 $3,9409000 Equipment Land Other (Specify) - Monitoring $509000 $50,000 Total $750,000 $3,2409000 $3,990,000 "' The project will be constructed in two phases. The first phase (Phase I) will consist of the stormwater treatment system, including the algal turf scrubber and the second phase (Phase II) will consist of landscaping and public park/education enhancements. The construction cost for the Phase I stormwater treatment facility is estimated to be $3,940,000. The estimated cost for Phase II is $3,810,000. The total estimated Phase I and II construction cost is $7,750,000. The minimum match required for this grant is $750,000. The amounts shown in the Table reflect estimated Phase I costs. III. SCOPE OF WORK: (e.g., specifications, task timeline within current authorized Agreement period, method or manner of performance, requirements, quarterly cash needs, etc.) Indian River County proposes to construct an aquatic plant based nutrient removal system on a 35 acre site in southwest Indian River County to treat nutrient rich stormwater runoff and groundwater base flow from the Indian River Farms Water Control District (IRFWCD) canal system. IRFWCD is a Florida Statute Chapter 298 drainage district with a total basin size of over 50,000 acres. The watershed in this portion of the district is 80% agricultural and drains approximately 9,000 acres through the Main Relief Canal in Vero Beach, Florida to the Indian River Lagoon. Currently, the flows from the IRFWCD discharge into the Lagoon near to or in the City of Vero Beach, with little or no treatment. The Indian River Lagoon is an Estuary of National Significance and a St. Johns River Water Management District (SJRWMD) SWMM program priority water body. Land use in this region is rapidly changing to urban residential. The facility's primary purpose is to remove dissolved nutrients (nitrogen and phosphorus) from the canal water. Additional nutrients that are bound to solid particles will also be removed by the facility's primary solids settling lake. The project includes the following: mechanical pre-screening to remove all solids greater than one -inch before the water enters the treatment facility; a treatment train of approximately 9.5 acres of deep wet ponds for primary settling and treatment; a 4.5 -acre wood stork habitat area; and the main treatment engine, a 4.6 acre aquatic plant based nutrient removal system consisting of an algal turf scrubber system. The project is anticipated to reduce TSS by 60.9 tons per year, total phosphorus by 1.7 tons per year, and total nitrogen by 7.3 tons per year. With respect to the total IRFWCD basin loadings, this represents a reduction of 7.7 percent phosphorus, 4.5 percent nitrogen, and 1.7 percent suspended solids. This full-scale treatment project is also a demonstration project to familiarize the agricultural interests in the IRFWCD with managed aquatic plant systems as a viable agricultural BMP. Monitoring will be performed to determine the system's treatment effectiveness. The system will also serve as a park where displays will be constructed to educate the public about stormwater pollution and treatment.