Tampa Bay Region - Southwest Florida Water Management District

N449
Stormwater Improvements - Flood Protection - Treasure Island - Sunset
Beach Watershed - Phase 3
Project Type
AORs
Water Quality
Flood Protection
Cooperative Funding
Strategic Initiatives
Water Quality Maintenance and Improvement
Floodplain Management
City of Treasure Island
Cooperator(s)
Project Manager Terese Power
Task Manager(s)
Status
Proposed Coop. Funding Application
Recommendation
Fund as High priority. This proposed project is for the implementation of Best Management Practices (BMPs) the northern portion
of the Sunset Beach drainage basin located within the City of Treasure Island in Pinellas County to enhance water quality and flood
protection.
Description
This proposed project is to perform the Implementation of Best Management Practices (BMPs) element of the District's Watershed
Management Program (WMP). The BMP will be implemented in the northern portion of the Sunset Beach drainage basin located
within the City of Treasure Island in Pinellas County to enhance flood protection and water quality. This is the third phase of the
Sunset Beach drainage area improvements. Stormwater which once discharged through multiple outfalls that will eventually be
rerouted to a single outfall through future additional construction. This outfall has a 13.86 acre contributing area. A Nutrient
Separating Baffle Box (NSBB) will be placed on the outfall allowing for water quality improvement prior to being discharged to Boca
Ciega Bay. The single outfall is currently within an easement and will allow the City to maintain their system more readily as
several of the existing outfalls do not have easements. The proposed design also includes the replacement of 225 linear feet of 48
inch concrete pipe that discharges to the outfall. Implementation of BMPs includes the following tasks: design, development of
construction documents, construction permitting, land acquisition, bidding and contractor selection, construction of the BMPs and
construction engineering and inspection. The proposed BMPs involves the construction of the 48 inch culvert to enhance
conveyance to reduce flooding (level of service).
Benefits
This project will improve water quality in Boca Ciega Bay by treating stormwater with a Nutrient Separating Baffle Box (NSBB). This
is effective in removing large floatables and small sediment from the flow stream. Greases and oils will also be removed through
the incorporation of an absorbent boom and a skimmer. This technology is capable of removing up to 80% of all TSS from
stormwater, which is in compliance with management measures created by the EPA. With a per pound pollutant removed cost of
13-cents/lb., sediment retention technology provides the City with an affordable and easily maintainable water quality improvement
devise. Construction of the 48 inch culvert will enhance flood protection.
Costs
The total budget amount for this project is $300,000, of which the District's share is $150,000 and the City's share is $150,000. The
probable construction costs for this project are based on a BMP alternative analysis developed by the cooperator. The District
funding amount shown in the table includes staff salaries.
Additional Information
The WMP includes five major elements: Topographic information, Watershed Evaluation, Watershed Management Plan,
Implementation of BMPs, and Maintenance of Watershed Parameters and Models. Implementing elements of the WMP with local
governments is one of the District's Strategic Priorities. A cooperative funding expenditure agreement will be developed with the
City for Implementation of BMPs. The City will manage the project, where the District project manager must approve any
agreements to accomplish project tasks. Engineering design has already begun and permitting of the project will commence
immediately upon approval of cooperative funding. A senior administrator provided confirmation that the City will budget the
project for FY2013. This is the only project that the City has submitted for cooperative funding for FY2013.
Prior
Funding
Cumulative
Transfer or
Lapsed Funding
FY2012
Funding
FY2013
Funding
Future
Funding
Total
Funding
District Budgeted - Ad Valorem
Based Revenue
010 General Fund (Districtwide) 0 0 0 44
0
44
016 Pinellas-Anclote River Basin 0 0 0 150,000
0 150,000
Project Funds Not Budgeted by the
District
City of Treasure Island 0 0 0 150,000
0 150,000
Total
$300,044
41