WQ Sub-Committee Agenda 10/01/2019COASTAL ADVISORY WATER QUALITY SUB-COMMITTEE AGENDA
COASTAL ADVISORY COMMITTEE WATERQUALITY SUB-COMMITTEE MEETING (CAC)
TUESDAY, OCTOBE 1, 2019 - 1:00 P.M.
ADMINISTRATION BUILDING
FIFTH FLOOR, COLLIER COUNTY GOVERNMENT CENTER
3299 TAMIAMI TRAIL EAST, NAPLES
I. Call to Order
II. Pledge of Allegiance
III. Roll Call
IV. Changes and Approval of Agenda
V. Public Comments
VI. Approval of Subcommittee Minutes
* September 3, 2019
VII. Staff Reports
VIII. New Business
1. Dave Tomasko, ECA - Presentation
2. Danette Kinaszczuk - Presentation
IX. Old Business
X. Announcements
XI. Committee Member Discussion
XII. Next Meeting Date/Location
TBD
XIII. Adjournment
All interested parties are invited to attend, and to register to speak and to submit their objections, if any, in
writing, to the board prior to the meeting if applicable.
For more information, please contact Gail D. Hambright at (239) 252-2966.
If you are a person with a disability who needs any accommodation in order to participate in this
proceeding, you are entitled, at no cost to you, to the provision of certain assistance. Please contact the
Collier County Facilities Management Department located at 3301 East Tamiami Trail, Naples, FL 34112,
(239) 252-8380.
Public comments will be limited to 3 minutes unless the Chairman grants permission for additional time.
Collier County Ordinance No. 99-22 requires that all lobbyists shall, before engaging in any lobbying
activities (including, but not limited to, addressing the Board of County Commissioners) before the Board
of County Commissioners and its advisory boards, register with the Clerk to the Board at the Board
Minutes and Records Department.
8.B.2
Packet Pg. 260 Attachment: 10-1-19 WaterQuality Agenda (10380 : CAC Water Quality Sub-Committee - October 1, 2019)
esassoc.com
Recommendations for coordinating water
quality monitoring programs with existing
regulatory programs
January 16, 2019
October 1, 2019
8.B.3
Packet Pg. 261 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Topics
•Basic premise for FDEP water quality assessment
programs
−Develop criteria
−Collect data
−Compare results
−Determine course of action
•Overview of water quality data sets
−Used to develop NNC criteria
−Used in ongoing monitoring
•Proposed path forward
8.B.3
Packet Pg. 262 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Are your waters impaired?
•Numeric Nutrient Concentration (NNC) criteria
−Based on dataset collected by FIU
−Determination of “hold the line” / appropriate water quality
•Ongoing water quality monitoring efforts produce data
•Results from ongoing compared to NNC criteria
•If Annual Geometric Means (AGM) exceed 80th percentile,
an exceedance
•If 2 or more exceedances in 3 years –impairment
•If impaired –need for action
−Total Maximum Daily Load (TMDL)
−Reasonable Assurance Plan (RAP)
−4e plan –need more time to figure this out!
8.B.3
Packet Pg. 263 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Where did NNC criteria come from?
•Stations sampled by FIU (assistance from SFWMD)
•Monthly data from 1999-2007
•Developed criteria meant to “hold the line”
−NNC criteria equal 80th percentile value
8.B.3
Packet Pg. 264 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Rookery Bay/Marco Island Estuarine Numeric Region
(ENR) vs. Waterbody Identification (WBID) boundary
“The ENR criteria assessments are
being implemented on a WBID level.
We proposed this to our upper
management when we initiated the
ENR assessments and they
approved.
This method of assessment is
consistent with how we apply other
water quality criteria. “
Kevin O’Donnell, FDEP
8.B.3
Packet Pg. 265 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Comparison of FIU sites (1997-2007) to current monitoring
program in Impaired Waters Rule (IWR) Run 55 (2008-
2018) for Rookery Bay (3278U)
WBID
Number of sampling sites
FIU IWR Run 55
Rookery Bay 6 4
IWR Run 55
FIU
Both
•Overall reduction in sampling locations
•Ongoing sampling efforts limited to two FIU
stations (white)
8.B.3
Packet Pg. 266 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Comparison of FIU sites (1997-2007) to current
monitoring program in IWR Run 55 (2008-2018)
Marco Island (3278O)
WBID
Number of sampling sites
FIU IWR Run 55
Marco Island 1 15
IWR Run 55
FIU
Both
•Increase in sampling locations within system
•Ongoing sampling efforts primarily in canals
•Routine bimonthly monitoring effort
•FIU station discontinued in February 2015
8.B.3
Packet Pg. 267 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Comparison of FIU sites (1997-2007) to current
monitoring program in IWR Run 55 (2008-2018)
Marco Island-South Segment (3278P)
WBID
Number of sampling sites
FIU IWR Run 55
Marco Island -South
Segment 4 7
IWR Run 55
FIU
Both
•Increase in sampling locations within system
•Only one shared locations (FIU and IWR55)
•Ongoing monitoring efforts restricted to quarterly
monitoring at four sites throughout estuary
8.B.3
Packet Pg. 268 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Comparison of FIU sites (1997-2007) to current
monitoring program in IWR Run 55 (2008-2018)
Rookery Bay/ Marco Island
IWR Run 55
FIU
Both
•Monitoring Programs have changed in spatial and
temporal intensity
•Out of 26 current stations, only 4 are in the
same locations as in FIU’s program
•Existing monitoring programs (e.g., FDEP,
SFWMD, City of Marco Island) are not
consistent with FIU stations or frequency
WBID
Number of sampling sites
FIU IWR Run 55
Rookery Bay 6 4
Marco Island 1 15
Marco Island -South
Segment 4 7
8.B.3
Packet Pg. 269 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Opposite problem in Cocohatchee River (WBID
3259A)
Estuarine Nutrient Region:
Tidal Cocohatchee River (ENRE1)
Impaired for Nitrogen and Chlorophyll
Little Hickory Bay (ENRD11)
Water Turkey Bay (ENRD12)
Impaired for Chlorophyll
8.B.3
Packet Pg. 270 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Issues
•Lack of consistency between sites used to develop criteria
and sites being monitored
•Can confound assessment of trends over time by spatial
differences
•How can you tell if “holding the line” if different sites being
sampled?
•How to address this?
8.B.3
Packet Pg. 271 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Recommendations
•Focus water quality collection sites to be at or near sites used by
FIU to develop NNC criteria
−Additional data sites to be handled differently?
•Coordinate Rookery Bay NERR monitoring program to ensure
FDEP data sufficiency
•Work with FDEP to address the issue of ENR vs. WBID
boundaries
−More WBIDs than ENRs (Rookery Bay and Marco Island)
−More ENRs than WBIDs (Cocohatchee River and Ten Thousand
islands)
•Incorporate trend analysis into assessments
−The goal of NNC is to hold the line –is that being accomplished?
−Or is “impairment” related to 20% probability of impairment each
year?
8.B.3
Packet Pg. 272 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
esassoc.com
Questions?
8.B.3
Packet Pg. 273 Attachment: Collier Presentation 10-01-2019 (10380 : CAC Water Quality Sub-Committee -
Updated: September 23, 2019 1 | P a g e
TOTAL MAXIMUM DAILY LOAD DEVELOPMENT CYCLE
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 (Figure 2). Collier
County entered this rotating cycle in 2000 is currently
in Phase 2 of Cycle 4 (Table 1). 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.
November 14, 2018, FDEP released the Cycle 4 EWC
Draft Verified List of waterbodies.
Figure 1. TMDL Basins
PHASE 1
Select sites,
collect Data,
upload to WIN
PHASE 2
Assess Data
and Verify
Impaired
Waters
PHASE 3
TMDL is
developed
PHASE 4
BMAP is
developed
PHASE 5
Implement
BMAP
Figure 2. TMDL Process
8.B.4
Packet Pg. 274 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 2 | P a g e
COLLIER COUNTY
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 STORET or WIN; 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; 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.
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
Cycle Five
YEAR 2020 2021 2021 2022 2022 2023 2023 2024 2024 2025
Group 1 PHASE 4 PHASE 5 PHASE 1 PHASE 2 PHASE 3
We
are
here!
8.B.4
Packet Pg. 275 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 3 | P a g e
Impaired Waters Rule Assessment
The Draft Verified List of Impaired Waters for Everglades West Coast Basin was released on November 14,
2018 (Run_55) and comments were due to Florida Department of Environmental Protection (FDEP) by Dec. 7,
2018. Following those comments, the revised Draft Verified List of Impaired Waters was completed under
Run_56 and released for public comment April 23, 2019. Comments for the revised Draft Verified List were
due to FDEP by May 31, 2019. Data used in the revised assessment (Run_56) were obtained from data
uploaded into FDEP’s STOrage and RETrieval (STORET) and/or Watershed Information Network (WIN)
databases as of November 30, 2018.
Collier County Pollution Control collects monthly samples; analyzes and uploads data into the STORET and
now WIN databases from 55 surface water sites. Data are assessed by FDEP using the criteria provided in
Florida Administrative Code (FAC) 62-302 (Surface Water Quality Standards) and using the methodology
provided in FAC 62-303 (Impaired Waters Rule).
This assessment is done every 5 years and was scheduled to be completed in 2016. However, this assessment
was delayed two years because new criteria were adopted by FDEP for dissolved oxygen, bacteria and numeric
nutrient criteria for streams, lakes, springs, and estuaries. FDEP was able, where applicable and data were
available, to assess historic data using the new criteria. This removed some existing impairments for dissolved
oxygen and fecal coliform in Collier County.
The current Verified Impaired Waters list adopted in 2012 includes 19 waterbodies and 28 impairments. The
Draft Verified Impaired Waters list released April 2019 includes 21 waterbodies and 48 impairments. Table 2
provides the list of impairments and distinguishes between existing impairments found in 2012 and new
impairments listed on the Draft Verified Impaired list in 2019. Figure 3 shows this Draft Verified Impaired
Waters and current TMDLs in Collier County.
There are still no numeric nutrient criteria for canals in South Florida. While FDEP conducted a multi-year
study in Broward, Miami-Dade, Collier and Lee counties to determine numeric total nitrogen, total phosphorus
and chlorophyll, criteria have not been developed to date.
Following the public comment period May 31, 2019, FDEP will finalize the list of Verified Impaired waterbodies
and submit them for adoption by Secretarial Order in 2019. Once adopted, those prioritized for Total
Maximum Daily Load development will begin that process in 2019/2020. The highest priority for TMDL
development are those waterbodies that are impaired for bacteria.
Table 2. Current Impairments (2012) and Draft Impairments (2019) by Waterbody
2012 Impairments 2019 Draft Impairments
Camp Keais Clam Bay
Nutrients (Historic Chlorophyll-a) Copper
Clam Bay Cocohatchee River
Copper Fecal Coliform
Cocohatchee Inland Fecal Coliform (3)
8.B.4
Packet Pg. 276 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 4 | P a g e
Table 2. Current Impairments (2012) and Draft Impairments (2019) by Waterbody
2012 Impairments 2019 Draft Impairments
Dissolved Oxygen Nutrients (Chlorophyll-a)
Cocohatchee River Nutrients (Total Nitrogen)
Iron Drainage To Corkscrew Swamp
Corkscrew Marsh Iron
Dissolved Oxygen Gordon River (Marine Segment)
Cow Slough Copper
Fecal Coliform Dissolved Oxygen (Percent Saturation)
Drainage to Corkscrew Swamp Enterococci
Iron Iron
Gordon River (Marine Segment) Nutrients (Chlorophyll-a)
Copper Nutrients (Total Nitrogen)
Iron Nutrients (Total Phosphorus)
Gulf of Mexico (Collier County; Marco Island) Gordon River Extension
Fecal Coliform (SEAS Classification) Dissolved Oxygen (Percent Saturation)
Haldeman Creek (Lower) Escherichia coli
Copper Gulf of Mexico (Collier County; Marco Island)
Fecal Coliform Nutrients (Total Nitrogen)
Immokalee Basin
Gulf of Mexico (Collier County; Rookery Bay-
Naples)
Dissolved Oxygen Nutrients (Total Nitrogen)
Fecal Coliform
Gulf of Mexico (Monroe County; Collier
County)
Naples Bay (Coastal Segment) Fecal Coliform (SEAS Classification)
Copper Haldeman Creek (Lower)
Iron Copper
North Golden Gate Enterococci
Dissolved Oxygen Lake Trafford
Iron Nutrients (Chlorophyll-a)
Okaloacoochee Slough Nutrients (Total Nitrogen)
Dissolved Oxygen Nutrients (Total Phosphorus)
Nutrients (Chlorophyll-a) Marco Island
Rock Creek Nutrients (Total Nitrogen)
Copper Marco Island (South Segment)
Iron Fecal Coliform (SEAS Classification)
Rookery Bay Coastal Nutrients (Total Nitrogen)
Dissolved Oxygen Nutrients (Total Phosphorus)
Fecal Coliform Moorings Bay System
Nutrients (Chlorophyll-a) Nutrients (Total Phosphorus)
Silver Strand Naples Bay (Coastal Segment)
Dissolved Oxygen Copper
8.B.4
Packet Pg. 277 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 5 | P a g e
Table 2. Current Impairments (2012) and Draft Impairments (2019) by Waterbody
2012 Impairments 2019 Draft Impairments
Southwest Coast Gulf 5 Fecal Coliform
Bacteria (in Shellfish) Fecal Coliform (3)
Ten Thousand Islands Iron
Fecal Coliform (SEAS Classification) Nutrients (Chlorophyll-a)
North Golden Gate
Dissolved Oxygen (Percent Saturation)
Oak Creek
Fecal Coliform
Rock Creek
Copper
Enterococci
Iron
Rookery Bay (Coastal Segment)
Fecal Coliform
Nutrients (Total Nitrogen)
Silver Strand
Iron
Ten Thousand Islands
Dissolved Oxygen (Percent Saturation)
Fecal Coliform (3)
Fecal Coliform (SEAS Classification)
Nutrients (Chlorophyll-a)
Nutrients (Total Nitrogen)
Wiggins Bay Outlet
Iron
8.B.4
Packet Pg. 278 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 6 | P a g e
Figure 3. Draft Impaired Waters (Run56) in Collier County 2019—(does not include Mercury Impairments)
8.B.4
Packet Pg. 279 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water
Updated: September 23, 2019 7 | P a g e
Total Maximum Daily Load (TMDL)
What is a TMDL?
A TMDL is a scientific determination of the maximum amount of a given pollutant that a surface water can absorb
and still meet the water quality standards that protect human health and aquatic life. Water bodies that do not
meet water quality standards are identified as "impaired" for the particular pollutants of concern - nutrients,
bacteria, mercury, etc. - and TMDLs must be developed, adopted and implemented to reduce those pollutants
and clean up the water body. The threshold limits on pollutants in surface waters (water quality criteria) are
established in Florida Administrative Code (FAC) 62-302.
Once TMDLs are adopted under Secretarial Order, they are then considered the new water quality criteria for
that waterbody. Discharges into a waterbody with a TMDL must meet this new water quality TMDL.
Basin Management Action Plans (BMAP)
What is a BMAP?
It is the "blueprint" for restoring impaired waters by reducing pollutant loadings to meet the allo wable
loadings or criteria established in a Total Maximum Daily Load (TMDL). It represents a comprehensive
set of strategies--permit limits on wastewater facilities, urban and agricultural best management
practices, conservation programs, financial assistance and revenue generating activities, etc.--designed
to implement the pollutant reductions established by the TMDL. These broad -based plans are
developed by FDEP with input from local stakeholders--they rely on local input and local commitment-
-and they are adopted by Secretarial Order to be enforceable.
Current TMDLs and BMAP status for Collier County
Lake Trafford
• TMDL for Nutrients, Unionized Ammonia, Dissolved Oxygen
o Lake Trafford is impaired for nutrients, unionized ammonia and dissolved oxygen. The
TMDL is established for total nitrogen (TN) and total phosphorus (TP). FDEP is making the
assumption that by reducing TN and TP loading that ammonia and dissolved oxygen will
respond favorably.
o Internal nutrient cycling was the biggest source of nutrients in the lake. Since Lake Trafford
was dredged during Cycle 2 while the TMDL was being set, FDEP has not pursued a formal
BMAP. Dredging was thought to be the best fix for the lake.
• BMAP
o There is currently no formal BMAP for Lake Trafford. As part of an inclusive Everglades
West Coast BMAP to address dissolved oxygen impairments in the entire EWC, FDEP
wanted to gather more data regionally on land uses and their influen ce on groundwater
and impairment of surface waters. This included two watersheds (Lake Trafford & Gordon
River Extension) in Collier County that are impaired due to nutrients. As part of this BMAP,
FDEP installed and monitored wells in these watersheds for two years (2014-2016) in
8.B.4
Packet Pg. 280 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 8 | P a g e
various land uses that included septic tanks, golf courses, residential, and areas using reuse
irrigation. Results from this study seemed inconclusive.
o FDEP also commissioned Florida Gulf Coast University to do a nutrient budget study.
o No formal BMAP is currently being developed.
Gordon River Extension
• TMDL for Dissolved Oxygen
o FDEP tied the dissolved oxygen impairment to elevated nutrients. Therefore, the TMDL
requires total nitrogen reductions. Total nitrogen target levels for Gordon River
Extension were based on the 75th percentile of total nitrogen values from a reference
site in Fakahatchee Strand. This reference site was used as a representative of
unimpacted, natural water quality conditions. However, this reference site didn’t meet
the dissolved oxygen criteria either.
o FDEP installed a flow meter to help calculate nutrient loading. Pollution Control was
involved in downloading the data from the flow meter every 2-3 weeks and sending the
data to FDEP. The flow meter was removed by FDEP in 2012 due to equipment failure.
• BMAP
o No formal BMAP for this waterbody is currently being developed. FDEP continued to
monitor until 2016 to further define the impairment and determine possible sources.
o FDEP installed and monitored wells within the Gordon River Extension Basin and
outside the basin to see if groundwater and what land uses are contributing to the
nutrient load. This was done as part of the EWC BMAP. Results from this study were
inconclusive, but FDEP resources were redirected and further monitoring was placed
on hold (Sara Davis, FDEP, personal communication).
Cocohatchee River
• TMDL for Fecal Coliform
o Cocohatchee River is classified as Class II Marine waters, which are usable for shellfish
harvesting. The fecal coliform criteria are much more stringent for Class II Marine
waters (43 cfu/100ml) vs. Class III Marine and Fresh waters (400 cfu/100ml). Fresh
water flowing into Cocohatchee can be within the state standards (below 400
cfu/100ml) and cause impairment downstream in the marine waters where the state
standard is (43 cfu/100ml).
o 2008--Pollution Control did a “walk the WBID” or “VISA” to locate any point sources for
fecal coliform. None were found. Collier County Utilities tightness tested all their
systems and no leaks were found. FDOH inspected all the septic tanks in the area and
found no issues. At that point, FDEP assumed sampling responsibilities and sampled
for one year. They were unable to locate a source
o 2015—FDEP and Pollution Control did a more formal “walk the WBID” using
biomarkers to target human sources of bacteria. No specific sources were found.
• BMAP
o No formal BMAP is currently being developed.
8.B.4
Packet Pg. 281 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,
Updated: September 23, 2019 9 | P a g e
o Using the new enterococci bacteria criteria, this waterbody would no longer be
considered impaired for bacteria. Collier County Pollution has request a reevaluation
the current TMDL.
Existing TMDLs (2008) Target Water Quality Goals and Load Reductions
WBID Parameter
Causing
Impairment
Target
Parameter
Target
Concentration
Target Load Reduction
WLA* LA**
Gordon River
Extension Dissolved Oxygen Total Nitrogen 0.74 mg/l N/A 29%
Lake Trafford
Nutrients,
Unionized-
Ammonia,
Dissolved Oxygen
Total Nitrogen 1.09 mg/l N/A 60%
Total Phosphorus 0.025 mg/l N/A 77%
Cocohatchee
River
(Estuary)
Fecal Coliform Fecal Coliform 43
colonies/100ml N/A 65 %
*WLA—Waste Load Allocation for both permitted waste water plants and NPDES permits
**LA—Load Allocation from non-point source
Applicable Regulations
• Florida Administrative Code Chapter 62-302: Surface Water Quality Standards
• Florida Administrative Code Chapter 62-303: Identification of Impaired Surface Waters
• Florida Administrative Code Chapter 62-304: Total Maximum Daily Loads
• Section 305(b) of the Clean Water Act (CWA): requires each state to report to the U.S. Environmental
Protection Agency (EPA) on the condition of its surface waters.
• Section 303(d) of the Clean Water Act (CWA): requires states to develop a list of waters not meeting
water quality standards or not supporting their designated uses.
• Florida Statute 403.067: Sets forth the TMDL process in Florida.
8.B.4
Packet Pg. 282 Attachment: Total Maximum Daily Load Development Cycle-Update May 2019 for CAC (10380 : CAC Water Quality Sub-Committee - October 1,