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TSS = 906, 000 lbs . TN = 46 ,800 lbs TP = 11 , 500. This one project provides a significant <br /> opportunity for Indian River County to make great strides in meeting the proposed TMDLs <br /> for this basin of the Indian River Lagoon . <br /> Self-cleaning screens are based on a concept that has been proven to be effective and has <br /> been in continuous operation for over seven years at a stormwater treatment area in West <br /> Palm Beach as part of the Everglades restoration project. The developers of the bar screen <br /> system are in the process of obtaining a U . S . patent for the system . It will utilize two sets of <br /> self-cleaning bar screens in series that will remove all particles 1 /8-inch and larger and <br /> some smaller particles due to matting effects . The pumped sedimentation sump will collect <br /> settleable solids that will be periodically removed by operations personnel . If necessary, <br /> maintenance will occur on a daily basis to remove the solids collected by the screens and <br /> sedimentation basin . Indian River County understands that maintenance is the key to <br /> pollutant removal efficiency. <br /> Project design is expected to be complete in mid-September 2006 . <br /> Public Outreach : <br /> A stormwater education campaign will be initiated in concert with construction to heighten <br /> awareness of the canal drainage system and the pollution it carries to the estuary. The St. <br /> Johns River Water Management District's IRL License Plate program has authorized the <br /> funding of 100 metal 30" x 34" street signs to be erected at strategic locations throughout <br /> the drainage basin . The sign will picture the license plate snook and read : "All Canals Drain <br /> To Lagoon - No Trash !". Signs will be placed at intersections near major canals . <br /> Newspaper articles and brochures will link the new road signs with the construction of the <br /> Main Relief Canal pollution control structure. The County believes that a heightened public <br /> awareness through a highway and road signage program will reduce the pollutant loads to <br /> our constructed treatment facility for the Indian River lagoon . <br /> Effectiveness Monitoring : <br /> Project effectiveness monitoring will be conducted to demonstrate the pollutant loading <br /> reduction accomplished by the treatment facility. Two types of monitoring will be <br /> conducted . 1 ) to evaluate the effectiveness of the treatment system , composite grab <br /> samples will be collected from the stormwater that passes through the treatment facility <br /> during seven storm events. Samples will be collected at the influent point to the treatment <br /> facility and at the effluent side for comparison . 2) an additional assessment of the pollutant <br /> load reduction will be achieved by weighing and quantifying representative samples of the <br /> trapped material by the bar screens and the sedimentation basin . The representative <br /> samples of the trapped material will be analyzed for nutrient content on a dry weight basis . <br /> A continuously operating flow meter will allow for accurrate estimates of total volume <br /> treated . All trapped material removed from the facility will be weighed at the County landfill <br /> prior to disposal at the landfill . The County intends to keep daily records of flow and <br /> materials removed in order to demonstrate credit towards achieving the TMDL for this <br /> basin . A Preliminary Effectiveness Monitoring Plan has been included in this proposal as <br /> Attachment A. <br /> REMAINDER OF PAGE INTENTIONALLY LEFT BLANK <br /> DEP Agreement No. G0182, Attachment A- 1 , Page 6 of 12 <br />