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Collier County

TMDL Development Process

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Total Maximum Daily Load Development Process

The Florida Department of Environmental Protection (FDEP) developed a five-year cycle that divides Florida into five groups of surface water basins (Figure 1) in which different activities take place each year; the cycle is reiterated continuously to evaluate the success of clean-up efforts, refine water quality protection strategies, and account for the changes brought about by Florida’s rapid growth and development.

Collier County is located in the Everglades West Coast Basin (EWC) in Group 1.  Each group undergoes a cycle of five phases on a rotating schedule (Table 1).  Collier County entered this rotating cycle in 2000 is currently in Phase 2 of Cycle 4. However, the TMDL development schedule has changed due to the development and implementation of new dissolved oxygen and numeric nutrient criteria in the State. This has pushed the phase of Cycle 4 out about two years. We are currently in a strategic monitoring phase while FDEP collects more data to determine numeric nutrient numbers for canals in South Florida which currently do not have numeric criteria for nitrogen or phosphorus. The next impaired waters assessment is scheduled to occur in 2019 with TMDL development in 2020. FDEP's priority framework for TMDL development can be found at http://www.dep.state.fl.us/water/tmdl/docs/PriorityFrameworkDocument.pdf.

Table 1. Schedule for TMDL Development in the Everglades West Coast Basin

Cycle One

YEAR

2000

2001

2001

2002

2002

2003

2003

2004

2004

2005

Group 1

PHASE 1

PHASE 2

PHASE 3

PHASE 4

PHASE 5

Cycle Two

YEAR

2005

2006

2006

2007

2007

2008

2008

2009

2009

2010

Group 1

PHASE 1

PHASE 2

PHASE 3

PHASE 4

PHASE 5

Cycle Three

YEAR

2010

2011

2011

2012

2012

2013

2013

2014

2014

2015

Group 1

PHASE 1

PHASE 2

PHASE 3

PHASE 4

PHASE 5

Cycle Four

YEAR

2015

2016

2016

2017

2017

2018

2018

2019

2019

2020

Group 1

PHASE 1

PHASE 2

PHASE 2 cont’d

PHASE 2 cont’d

PHASE 3

 

Phase 1: Preliminary Evaluation

Close coordination with local stakeholders to conduct a preliminary basin water quality assessment; inventory existing and proposed management activities; identify management objectives and issues of concern; develop a strategic monitoring plan; and produce a preliminary Status Report that includes a Planning List of potentially impaired waters.

Phase 2: Strategic Monitoring and Assessment

Cooperative efforts between the Department and local stakeholders to collect additional data; get data into FDEP's STOrage and RETrieval (STORET) water quality database; complete water quality assessment; produce a final Assessment Report that includes a Verified List of impaired waters for Secretarial adoption; and provide an opportunity for stakeholders to document reasonable assurance (for Department review) that existing management plans and projects are adequate to restore water quality without the establishment of a TMDL.

Phase 3: Development and Adoption of TMDLs

Coordination with stakeholders to discuss TMDL model framework, including model requirements, parameters to be modeled, model endpoints, design run scenarios and preliminary allocations; communication of science used in the process; and public workshops for rule adoption of TMDLs.

Phase 4: Development of Basin Management Action Plan

Broad stakeholder participation in developing a Basin Management Action Plan (BMAP) including detailed allocations and implementation strategies; incorporating it into existing management plans where feasible; and public meetings during the planning process.

Phase 5: Implementation of Basin Management Action Plan

Emphasis on implementing the BMAP, other voluntary stakeholder actions, and local watershed management structures; Department will continue to provide technical assistance, fulfill oversight responsibilities, and administer National Pollutant Discharge Elimination System (NPDES) point and nonpoint source permits.

 

Updated March 3, 2017