Tampa Bay Region - Southwest Florida Water Management District

N469
Stormwater Improvements - Flood Protection - Pinellas Park - Longhill Drive
Drainage Basin
Project Type
AORs
Water Quality
Flood Protection
Cooperative Funding
Strategic Initiatives
Water Quality Maintenance and Improvement
Floodplain Management
Pinellas Park
Cooperator(s)
Project Manager Terese Power
Task Manager(s)
Status
Proposed Coop. Funding Application
Recommendation
Fund as a High priority. This funding request is for the proposed Implementation of Best Management Practices (BMPs) in the
Longhill Drive channel located within the City of Pinellas Park in Pinellas County that will enhance water quality and flood
protection. Design and permitting of the project is complete and construction can commence immediately upon approval of
cooperative funding.
Description
This proposed project is for the implementation of Best Management Practices (BMPs) element of the District's Watershed
Management Program (WMP). The BMP will be implemented in the Longhill Drive channel located within the City of Pinellas Park in
Pinellas County. The Longhill Dr. channel receives flow from a 150-acre basin and discharges into Cross Bayou, a FDEP
designated impaired water body. The design includes construction of a 1,280 linear foot 5' by 8' box culvert within the existing
channel to address channel erosion and maintenance issues while further protecting adjacent structures from flooding during
severe storm events. A treatment swale is proposed above the box culvert which will have ditch blocks at 100 foot intervals and
plantings in order to retain and treat stormwater. A hydrodynamic separator will be added to the most upstream inlet discharging to
the channel. Debris catching baskets and absorbent booms will be added to four inlet structures which discharge from the
proposed treatment swale to the box culvert. 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 will address level of service deficiencies. Design and permitting of
the project is complete and construction can commence immediately upon approval of cooperative funding.
Benefits
This project will improve water quality in Cross Bayou by treating stormwater with a hydrodynamic separator and a surface
treatment swale. 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 17-cents/lb., sediment retention technology provides the City with an affordable and easily maintainable water
quality improvement devise. Construction of the 5' by 8' culvert will enhance flood protection.
Costs
The total budget amount for this project is $1,476,680, of which the District’s share is $738,340 and the City’s share is $738,340.
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. Design and permitting of the project is complete and construction can commence
immediately upon approval of cooperative funding. A senior administrator provided confirmation that the City will budget the
project for FY2013. This project is ranked first of the two projects the City has applied 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 0 738,340
0 738,340
Project Funds Not Budgeted by the
District
Pinellas Park 0 0 0 738,340
0 738,340
Total
$1,476,724
50