2006-332 - Laserfiche WebLink

Home Browse Search

ATTACHMENT A-1 REVISED GRANT WORK PLAN PROJECT #: 19 Indian River County Main Relief Canal Pollution Control Structure PROJECT FUNDING : $725 , 500. 00 FY05 319 $3 ,298,475 Match LEAD Indian River County ORGANIZATION : CONTACT PERSON : Keith Mccully, P . E . , Esq . Public Works - Stormwater Div. 184025 1h St. Vero Beach , FI 32960 (772) 567-8000 (X1562) (772) 778-9391 ( Fax) Kmccully@lrcgov. 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 constructed in the Main Relief Canal in Vero Beach that utilizes a pumped sedimentation sump and a series of self- cleaning 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 cfs draining from a 21 , 705-acre basin that is 50% urban and 50% agricultural . The self- cleaning fixed bar screens will utilize a traveling rake system to remove large masses of vegetative debris such as hyacinths , water lettuce , duckweed and grasses and floating trash before the water enters the Indian River Lagoon. A sedimentation sump preceding the bar screens will collect settleable solids that will periodically be pumped out by operations personnel . The project is anticipated to reduce Total Suspended Solids (TSS) by 45% (or 906 , 000 lbs. per year) , Total Phosphorus by 36% (or 11 ,500 lbs. per year), and Total Nitrogen by 23% (or 46 , 800 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- DEP Agreement No. G0182, Attachment A- 1 , Page 1 of 12