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

W794
Winter Haven Chain of Lakes Sediment Removal Feasibility Study
Project Type SWIM
AOR(s)
Water Quality
Basin(s) Peace River
Cooperator(s)
Winter Haven
Project Manager GARCIA, LIZANNE
Task Manager(s)
Status Ongoing
SZAFRANIEC, MARY
Description
This study will quantify the nutrient inputs from sediment into Lakes May, Shipp and Lulu in the Southern Chain of
Lakes in Winter Haven. The project will also study the feasibility to remove or inactivate the sediments if they are found
to be contributing significant amounts of nutrients to the overlying water column. If sediment removal or inactivation is
feasible, the City would request funding in future years for implementation of the study recommendations. This initial
study will also identify additional information required to perform future design and permitting work. City staff
recommends that the benefits of muck removal should be reviewed while opportunities for land acquisition for
sediment disposal still exist. The City would be responsible for hiring a consultant to perform the study.
Benefits
The project will assist the District and the City of Winter Haven in making management decisions regarding the
removal or inactivation of sediments from the Lakes May, Shipp and Lulu to improve water quality.
Costs
The FY2005 project cost was $150,000 with the City of Winter Haven and the District each contributing half ( $75,000).
The District's share is split between the Peace River Basin Board ($30,000) and the State SWIM Program ($45,000).
The FY2009 ongoing costs shown in the table include staff salary, travel and central garage related to project
management.
Additional Information
The Winter Haven Chain of Lakes is a SWIM priority water body. The SWIM Plan for the Winter Haven Chain of
Lakes references the need to quantify the effects of nutrient loading from sediments to the overlying water column.
The Southern Chain of Lakes in Winter Haven has historically been subject to numerous point and non-point sources
of pollution. All point sources of pollution have been removed from the lakes but the lingering effects of these
discharges remain. Non-point sources of pollution have discharged into all of the above mentioned lakes through
drainage pipes carrying untreated stormwater and the City, in cooperation with the District, has implemented several
stormwater treatment projects throughout the Chain. City staff performed a survey of the accumulated sediments in
Lakes Howard, May, Shipp and Lulu in 1994. An estimated 2.9 million cubic yards of unconsolidated organic
sediments exist in the bottom of the four mentioned lakes. In Lake May, the average depth of these sediments
approaches 7 feet resulting in the sediment/water interface being within 3.5 feet of the water's surface during low
water, allowing wind, wave and boat action to re-suspend the sediments on a continual basis.
Prior
FY 2009 FY2010
Funding Funding Funding
District Budgeted - Ad Valorem Based
Revenue
020 Peace River Basin 39,401 2,439 2,462
0 44,302
District Budgeted - Outside Revenue
State Trust Funds (SWIM) 7,072 2,439
0
0 9,511
State Trust Funds (SWIM) - Prior 2006 48,490 0
0
0 48,490
WMLTF (SWIM) - Prior Year Funds 0 0 2,462
0 2,462
Project Funds Not Budgeted by the
District
City of Winter Haven 75,000 0
0
0 75,000
020 - Peace River Basin 71
Total:
Future
Funding
Total
Funding
$179,765