Fla. Admin. Code Ann. R. 62-304.810 - Everglades West Coast Basin TMDLs

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(1) Hendry Creek Marine. Hendry Creek Marine. The bacteriological TMDL is 400 counts/100 ml for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to address anthropogenic sources in the basin such that in-stream concentrations meet the fecal coliform criteria which, based on the measured concentrations from the 2000 to 2007 period, will require a 57.4% reduction at sources contributing to exceedances of the criteria; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-stream concentrations meet the fecal coliform criteria which, based on the measured concentrations from the 2000 to 2007 period, will require a 57.4% reduction at sources contributing to exceedances of the criteria.

(2) Hendry Creek Marine. The TMDLs to address the low DO condition is an annual median TN of 0.6 mg/L in Hendry Creek Marine, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is a 44% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period; and

(c) The LA for nonpoint sources is a 44% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period.

(3) Hendry Creek. Hendry Creek DO TMDL. The TMDL to address the low DO condition is an annual median TN of 0.6 mg/L in Hendry Creek, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(c) The LA for nonpoint sources is a 44% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period.

(4) Imperial River. The Imperial River DO TMDL. The TMDLs to address the low DO condition is an annual median TN of 0.74 mg/L in the Imperial River, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is a 24.9% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period; and

(c) The LA for nonpoint sources is a 24.9% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period.

(5) The Cocohatchee River. The bacteriological TMDL is 43 counts/100 ml for fecal coliform and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to address anthropogenic sources in the basin such that in-stream concentrations meet the fecal coliform criteria which, based on the measured concentrations from the 2000 to 2007 period, will require a 65% reduction at sources contributing to exceedances of the criteria; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-stream concentrations meet the fecal coliform criteria which, based on the measured concentrations from the 2000 to 2007 period, will require a 65% reduction at sources contributing to exceedances of the criteria.

(6) The Gordon River Extension. The Gordon River Extension DO TMDL. The TMDLs to address the low DO condition is an annual median TN of 0.74 mg/L in the Gordon River Extension, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is a 29% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period; and

(c) The LA for nonpoint sources is a 29% reduction of current anthropogenic TN loading based on measured concentrations from the 2000 to 2007 period.

(7) Lake Trafford. The Lake Trafford DO TMDL. The TMDL for Lake Trafford is based on achieving the Class 3 minimum DO criterion of 5.0 mg/L, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is a 60% reduction of current anthropogenic TN loading, and a 77% reduction of current anthropogenic TP loading based on measured concentrations from the 2000 to 2007 period; and

(c) The LA for nonpoint sources is a 60% reduction of current anthropogenic TN loading, and a 77% reduction of current anthropogenic TP loading based on measured concentrations from the 2000 to 2007 period.

(8) Lake Trafford. The Lake Trafford nutrient TMDL is based on meeting a maximum Trophic State Index (TSI) of 60, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(9) Lake Trafford. The Lake Trafford un-ionized ammonia TMDL is based on meeting a maximum concentration of 0.02 mg/L, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is a 60% reduction of current anthropogenic TN loading, based on measured concentrations from the 2000 to 2007 period; and

(c) The LA for nonpoint sources is a 60% reduction of current anthropogenic TN loading, based on measured concentrations from the 2000 to 2007 period.

(10) Naples Bay (Coastal Segment). The copper TMDL for Naples Bay (Coastal Segment) is the applicable copper criterion for Class II marine waters of 3.7 µg/L, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to achieve a 56% reduction of copper (calculated from 8.5 µg/L), based on the highest observed copper concentration from the 2011-2020 period; and

(c) The LA for nonpoint sources is to achieve a 56% reduction of copper (calculated from 8.5 µg/L) based on the highest observed copper concentration from the 2011-2020 period.

(11) Rock Creek. The copper TMDL for Rock Creek is the applicable copper criterion for Class III marine waters of 3.7 µg/L, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to achieve a 47% reduction of copper (calculated from 7.0 µg/L), based on the highest observed copper concentration from the 2011-2020 period; and

(c) The LA for nonpoint sources is to achieve a 47% reduction of copper (calculated from 7.0 µg/L) based on the highest observed copper concentration from the 2011-2020 period.

(12) Haldeman Creek (Lower). The copper TMDL for Haldeman Creek (Lower) is the applicable copper criterion for Class III marine waters of 3.7 µg/L, and is allocated as follows:

(a) The WLA for wastewater point sources is not applicable;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to achieve a 68% reduction of copper (calculated from 23.8 µg/L), based on the highest observed copper concentration from the 2011-2020 period; and

(c) The LA for nonpoint sources is to achieve a 68% reduction of copper (calculated from 23.8 µg/L) based on the highest observed copper concentration from the 2011-2020 period.

Notes

Fla. Admin. Code Ann. R. 62-304.810

Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.061, 403.062, 403.067 FS.

New 10-21-08, Amended by Florida Register Volume 47, Number 081, April 27, 2021 effective 5/9/2021, Amended by Florida Register Volume 50, Number 177, September 10, 2024 effective 9/24/2024.

New 10-21-08, Amended 5-9-21.

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