Implementing the Tampa Bay Dredged Material Management Strategy

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Implementing the

Tampa Bay

Dredged Material Management Strategy

Background Implementing the

Tampa Bay Dredged Material Management Strategy (DMMS) 1972 1972 Clean Water Act (CWA) Passed 1997 1997 TBEP Management Plan Developed

1987

1991

CWA Amended

Tampa Bay Estuary Program (TBEP)

Founded 2000

DMMS Prepared

2002-2005 DMMS Implemented Dredge Hole Assessment Project

Presentation Format Implementing the

Tampa Bay Dredged Material Management Strategy (DMMS) • DMMS – Development • DMMS - Conclusions • DMMS - Recommendations • Dredge Hole Assessment Project • Project objectives/tasks • Project results to date • Next steps

Development Tampa Bay Estuary Program Management Plan Tampa Bay Action Plan 1

Action Plan 2

Action Plan 3

Action Plan 5

Action Plan 6

Action Plan 4 Dredging & Dredged Material Management 25-year plan

1. Committee 2. Report – Strategy (DMMS)

Conclusions Dredged material can be a resource Tampa Bay

• • • •

Place material on beaches Use dredged material beneficially Manage aggressively existing upland areas Share placement areas

Egmont Egmont Key Key

Harbor Harbor Isles Isles Lake Lake

Recommendations • Additional study • Data collection Tampa Bay

• Computer model • Analysis • Beneficial use investigation

• Commercial applications • Habitat restoration

• Environmental inventory • Economics • Regulations • Regional Sediment Management

Resource Management Community Needs

Recommendations

Tampa Bay

Resource Management Community Needs 52 habitat restoration sites / fill material

Dredge Hole Assessment Project

General Community Needs Additional space for dredged material

Participating Agencies Holly Greening Nanette Holland Tampa Bay

Steve Grabe Jan Platt

Ed Sherwood Bob McMichael

Bill Fonferek US Army Corps of Engineers

Brandt Henningsen

Project Objectives/Tasks • Estimate the current Tampa Bay

habitat value of the selected holes

• Develop implementation plans for the ten selected holes

Project Objectives/Tasks Task

Tampa Bay

Complete Ongoing

Write Quality Assurance Plan

X

Evaluate 28 holes

X

Select 10 holes

X

Upcoming

Conduct field sampling:

• Water quality • Sediment quality • Fisheries • Benthos Analyze field data Develop plans for selected holes

X

X X

Project Objectives/Tasks

Tampa Bay

Water/Sediment Quality

Results to Date – Water/Sediment Quality Methodology

Tampa Bay

water sampling location water/sediment sampling location

Water Quality Sediment Quality (Temperature, salinity, DO) (Metals, PAHs, Pesticides, PCBs)

Results to Date - Water/Sediment Quality General Overview Water Quality • Stratification only evident in McKay Bay hole Tampa Bay

• DO>4 at all sites except McKay Bay hole

Sediment Quality • Organic contaminants < threshold effects level (TEL) or near maximum daily load (MDL)

Results to Date - Water/Sediment Quality Details - Whiskey Stump Key Hole #1 Tampa Bay

Water Quality • Salinity: Polyhaline (21-25 ppt) • No Stratification • Dissolved Oxygen: >5 ppm

Sediment Quality • • • •

Trace Metals: analysis ongoing Pesticides: 80% and Mysella planulata (Bivalvia) 1%

Fisheries

Results to Date - Fisheries Methodology Tampa Bay

Objectives

Methodology

Estimate faunal composition

Fisheries-independent

Estimate angler utilization

Fisheries-dependent

Results to Date - Fisheries General Overview 18

Tampa Bay

NumberofofSpecies Species Captured Collected Number

80 Commercial

16

70

14

60

12

50

15

Total Total

67

12

11

Unique Unique

56

Selected Selected

10

40

8

30

206

17

30 15

104 02

0

7

1

Inside Hole

12

Outside Hole

Anglers Catch Inside Hole

Recreational

Tampa Bay

Number of Species Collected

Results to Date - Fisheries Details – Whiskey Stump Key Hole #1 40 35

36

Total

30

Unique

28

Selected

25 20 15 10

11 8

8

5 0

3 Outside hole

Inside hole

Location

Results to Date - Fisheries Details – Whiskey Stump Key Hole #1 Tampa Bay

Incidence of Anglers

5 4 3 2 1 0

Nov. 2002

Dec. 2002

Jan. 2003

Feb. 2003

Mar. 2003

Month

Apr. 2003

May 2003

Jun. 2003

Jul. 2003

Next Steps Task

Tampa Bay

Complete Ongoing

Write Quality Assurance Plan

X

Evaluate 28 holes

X

Select 10 holes

X

Conduct field sampling:

• Water quality • Sediment quality • Fisheries • Benthos

Fall, Winter 2003

Analyze field data

Continue

Develop plans for selected holes

Upcoming

Spring 2004

Presentation Summary • The implementation of the DMMS is a community

effort that balances the needs of resource managers and the general community and establishes a decisionmaking framework for prioritizing projects