MANASOTA & PEACE RIVER BBDs Meeting Notebook 10-21-09.docx

W226
City of Anna Maria-Implementation of BMPs
Project Type SWIM
AOR(s)
Flood Protection, Water Quality
Basin(s) Manasota
Cooperator(s)
City of Anna Maria
Project Manager PRESTON, MATT
Task Manager(s)
Status Ongoing
PRATER, CORRINA
Description
The City of Anna Maria has submitted this multi-phase cooperative funding project to implement water quality and
flood protection best management practices (BMPs) in the Lower Tampa Bay Watershed, part of Tampa Bay and
Sarasota Bay, SWIM waterbodies. The project will impact four areas within the City totaling approximately 124 acres:
1) North Bay/Tarpon Basin, 2) North Shore/Jacaranda Basin, 3) South Drive/South Bay Area, and 4)
Crescent/Gulf/Willow Basin. All four basins outfall into the internal canals of Anna Maria, which in turn discharge into
Lower Tampa Bay. With FY2007 funding the work on the Implementation of BMPs (Phase 1) includes the following
tasks: design, development of construction documents, construction permitting, bidding and contractor selection,
construction of the BMPs and construction engineering and inspection for the Crescent/Gulf/Willow improvement area.
The BMPs will address level of service (LOS) deficiencies. The flood protection and water quality improvements
include 10-ft wide shallow dry retention swales with ditch blocks, various diameter HDPE/RCP pipe, inlet/control
structures and BMP baffle structures (one at each basin outfall location). The swales will provide treatment of
stormwater runoff through percolation and evaporation while the baffle structures will provide treatment through
sedimentation, filtration and skimming. The City submitted a request for FY2008 and FY2009 funding to complete the
implementation of BMPs in the final three areas.
Benefits
The City of Anna Maria has initiated a program to provide capital improvement projects that will improve both the water
quality and flood protection LOS provided by the City's surface water management system. The overall effect of the
improvements will be a reduction in pollutant loadings to the internal man-made canal system (classified as
Outstanding Florida Waters), Anna Maria Sound, Sarasota Bay, and Tampa Bay. The anticipated increase in flood
protection LOS will be through an increase in storage and conveyance capacity. The stormwater filtration devices
being proposed will provide suspended solids removal from stormwater runoff that previously discharged directly into
the canal/bay system.
Costs
The total budget amount for this project is $1.47 million with the Distict and the City of Anna Maria each contributing
half. The FY2009 project cost is $225,600, with the City and the District each contributing half ($112,800). The District
share is split between the Manasota Basin Board ($56,400) and State SWIM ($56,400). The probable construction
costs for this project are based on the BMP alternative analysis developed by the cooperator. The District funding
amounts shown in the table below include staff salary, travel and central garage.
Additional Information
Since 1950, approximately 50 percent of Tampa Bay's natural shoreline and approximately 40 percent of Sarasota
Bay's intertidal wetland habitat has been lost due to development and reduction in water quality. This resulted in a
decline in the aesthetic, recreational, and commercial value of the bay, as well as loss of habitat for native plants and
animals. The SWIM Plans for Tampa Bay and Sarasota Bay outline goals to restore habitat throughout the bay areas
and reduce pollutant loads entering the bays. The improvements will be made in City owned alleys and right of
ways. The funding should complete the following tasks for Phase 2 (North Bay/Tarpon Basin, North Shore/Jacaranda
Basin, and South Drive/South Bay improvement areas): design, development of construction documents, construction
permitting, bidding and contractor selection, construction of the BMPs and construction engineering and inspection.
021 - Manasota Basin 39