2006-121 - Laserfiche WebLink

Home Browse Search

ATTACHMENT A GRANT WORK PLAN Title: Indian River County Main Relief Canal Pollution Control Structure LEAD ORGANIZATION: Indian River County CONTACT PERSON: Keith Mccully, P.E., Esq. Public Works - Stormwater Div. 1840 25°i St. Vero Beach, F132960 (772) 567-8000 (X1562) (772) 778-9391(Fax) Kmccully a Ircgov.Com COOPERATING ORGANIZATIONS: Indian River County Public Works, Indian River Farms Water Control District, City Of Vero Beach, St. Johns River Water Management District PROJECT ABSTRACT: A large treatment structure will be constmeted on the Main Relief Canal in Vero Beach that utilizes vortex technology and bar screens to remove suspended solids and floating vegetative debris from canal water flowing to the Indian River Lagoon. The structures are designed to treat 294 efs draining from a 21,705 acre basin that is 50% urban and 50% agricultural. The vortex unit will be integrated with a self-cleaning fixed bar screen and traveling rake to remove large masses of vegetative debris such as hyacinths, water lettuce, duckweed and grasses and floating trash before the water enters the vortex unit. The vortex unit will then remove particles down to the 600 micron range. The project is anticipated to reduce TSS by 60% or 1,207,989 lbs. per year and Total Phosphorus by over 40% or 7,722 lbs. per year. A monitoring program will be conducted to accurately assess the removal efficiency of this treatment system. A public education and awareness program will be incorporated with the construction project to help reduce trash and vegetative debris input to the drainage system. PROJECT LOCATION AND WATERSHED CHARACTERISTICS: The Indian River Farms Water Control District (IRFWCD) in Indian River County, Florida, is an area over 53,000 acres that is drained by an extensive 300 mile network of man-made canals. The 21,705 acre Main Relief Canal basin is approximately 50% urban and 50% agricultural. The IRFWCD discharges into the Indian River Lagoon, an Estuary of National Significance. In the East Indian River County Master Stormwater Management Plan, a pollutant loading analysis showed that the three discharge canals of the IFRWCD convey huge amounts of suspended solids, nutrients, and floating vegetative debris into the lagoon, seriously degrading estuarine habitat. The canals also transport tremendous quantities of human -generated trash (Styrofoam cups, plastic, bottles, etc.) into the Lagoon. The proposed location of the Main Relief Canal treatment structure is west of US Highway 1 and the FEC railroad near the Vero Beach airport. Construction will take place within the public right-of-way of the IRFWCD as authorized by a Memorandum of Understanding between Indian River County and the Water Control District. Watershed Name: Indian River Lagoon Latitude: 27.63 Longitude: 80.40 Hydrologic Unit Code(HUC): 3080203 Land Uses within the Watershed (acres and percentages of total): REMAINDER OF PAGE INTENTIONALLY LEFT BLANK DEP Agreement No. G0182, Attachment A, Page 1 of 10