Fla. Admin. Code Ann. R. 62-304.645 - Springs Coast Basin TMDLs

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(1) Klosterman Bayou Run Tidal Segment. The bacteriological TMDL for Klosterman Bayou Run is 400 counts/100 ml for fecal coliform, and is allocated as follows:

(2) Saint Joes Creek Freshwater Segment. The bacteriological TMDLs for the Saint Joes Creek freshwater segment are established as follows: the Main Channel is a median of 4.1 x 10¹⁰ colonies/day for fecal coliform and the Miles Creek tributary is a median of 3.2 x 10¹⁰ colonies/day for fecal coliform, and are allocated as follows:

(a) 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 2004 to 2006 period, is a 50% reduction of current fecal coliform loading to the Saint Joes Creek Main Channel and based on the measured concentrations from the 2005 to 2006 period, is a 57% reduction of fecal coliform loading to the Saint Joes Creek Miles Creek tributary; and

(b) 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 2004 to 2006 period is a 50% reduction of current fecal coliform loading to the Saint Joes Creek Main Channel and based on the measured concentrations from the 2005 to 2006 period, is a 57% reduction of fecal coliform loading to the Saint Joes Creek Miles Creek tributary.

(3) 34th Street Basin. The bacteriological TMDL for the 34th Street Basin is 400 counts/100 mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2008 to 2011 period, will require a 98% 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 2008 to 2011 period, will require a 98% reduction at sources contributing to exceedances of the criteria.

(4) Clam Bayou Drain. The bacteriological TMDL for the Clam Bayou Drain is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004 to 2011 period, will require a 86% reduction of 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 2004 to 2011 period, will require a 86% reduction of sources contributing to exceedances of the criteria.

(5) Clam Bayou (East Drainage). The bacteriological TMDL for the Clam Bayou (East Drainage) is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004 to 2011 period, will require a 95% reduction of 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 2004 to 2011 period, will require a 95% reduction of sources contributing to exceedances of the criteria.

(6) Clam Bayou Drain (Tidal). The bacteriological TMDL for the Clam Bayou Drain (Tidal) is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2010, will require a 90% reduction of 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 2010, will require a 90% reduction of sources contributing to exceedances of the criteria.

(7) Cedar Creek (Tidal). The bacteriological TMDL for Cedar Creek (Tidal) is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004 to 2011 period, will require a 88% reduction of 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 2004 to 2011 period, will require a 88% reduction of sources contributing to exceedances of the criteria.

(8) Cedar Creek. The bacteriological TMDL for Cedar Creek is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004 to 2010 period, will require a 87% reduction of 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 2004 to 2011 period, will require a 87% reduction of sources contributing to exceedances of the criteria.

(9) Curlew Creek Freshwater Segment. The bacteriological TMDL for the Curlew Creek Freshwater Segment is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for the Mid-County Wastewater Treatment Plant (Permit Number FL0034789) is that the facility must meet its permit limit;

(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 2004 to 2011 period, will require a 90% reduction of 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 2004 to 2011 period, will require a 90% reduction of sources contributing to exceedances of the criteria.

(10) McKay Creek (Tidal). The bacteriological TMDL for McKay Creek (Tidal) is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004 and 2010, will require no reduction from the existing condition, but must continue to meet applicable water quality standards; 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 2004 and 2010, will require no reduction from the existing condition.

(11) McKay Creek. The bacteriological TMDL for McKay Creek is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2005 to 2010 period, will require a 91% reduction of 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 2005 and 2010 period, will require a 91% reduction of sources contributing to exceedances of the criteria.

(12) Pinellas Park Ditch No. 1 (Tidal Segment). The bacteriological TMDL for Pinellas Park Ditch No. 1 (Tidal Segment) is 400 counts/100mL for fecal coliform, and is allocated as follows:

(a) The WLA for wastewater 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 2004, 2006, and 2008, will require a 77% reduction of 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 2004, 2006, and 2008, will require a 77% reduction of sources contributing to exceedances of the criteria.

(13) Curlew Creek Tidal Segment. The TMDL to address the low DO and nutrient impairments is an annual average TN concentration of 0.95 mg/L and is allocated as follows:

(a) The WLA for the Mid-County Wastewater Treatment Plant is 4, 245 lb/year of TN;

(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 Class III marine DO and nutrient criteria which, based on the measured concentrations in the year 2011, will require a 15% reduction of TN 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 Class III marine DO and nutrient criteria which, based on the measured concentrations in the year 2011, will require a 15% reduction of TN at sources contributing to exceedances of the criteria.

(14) McKay Creek Tidal Segment. The TMDLs to address the low DO and nutrient impairments are an annual TN load of 15, 563 lb/year and an annual BOD load of 32, 505 lb/year and are allocated as follows:

(a) The WLA for wastewater 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 DO criterion and nutrient criterion, expressed as a chlorophyll a target, which, based on the calculated loadings from the 2002 - 2011 period, will require a 45% reduction of TN and 45% reduction of BOD at sources contributing to exceedances of the criteria; and

(c) The LAs for nonpoint sources are to address anthropogenic sources in the basin such that in-stream concentrations meet the DO criterion and nutrient criterion, expressed as a chlorophyll a target, which, based on the calculated loadings from the 2002 - 2011 period, will require a 45% reduction of TN and 45% reduction of BOD at sources contributing to exceedances of the criteria.

(15) Stevenson Creek Tidal Segment. The TMDLs for the Stevenson Creek tidal segment, to address nutrients and low DO, are 39, 915 lbs/year of TN and 85, 471 lbs/year of five-day CBOD and are allocated as follows:

(a) The WLAs for the Marshall Street Wastewater Treatment Plant are 76, 157 lbs/year of CBOD and 33, 509 lbs/year of TN;

(b) The WLAs for discharges subject to the Department's NPDES MS4 permitting program address anthropogenic sources in the basin and are 9, 314 lbs/year of CBOD and 6, 406 lbs/year of TN;

(c) Achievement of the total WLAs for the TMDLs by combining the Marshall Street WWTP and the MS4 discharges is allowed without reallocation of the individual WLAs; and

(d) The LA for this TMDL is not applicable.

(16) Weeki Wachee Spring and Weeki Wachee River (Freshwater Segment). The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.28 mg/L at the spring vent of Weeki Wachee Spring and an in-stream annual arithmetic mean nitrate-nitrite concentration of 0.20 mg/L for the Weeki Wachee River (freshwater segment).

(a) The WLA for wastewater 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 nitrate-nitrite concentrations meet the TMDL target, which will require a 71.1% reduction of nitrate-nitrite in Weeki Wachee Spring and a 77.3% reduction of nitrate-nitrite in the freshwater segment of the Weeki Wachee River, based on mean concentrations from the 2004-2012 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-stream nitrate-nitrite concentrations meet the TMDL target, which will require a 71.1% reduction of nitrate-nitrite in Weeki Wachee Spring and a 77.3% reduction of nitrate-nitrite in the freshwater segment of the Weeki Wachee River, based on mean concentrations from the 2004-2012 period.

(17) Kings Bay. The nutrient TMDL is an annual arithmetic mean TN concentration of 0.28 mg/L and an annual arithmetic mean TP concentration of 0.032 mg/L, and is allocated as follows:

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

(b) The WLA for surface water discharges subject to the Department's NPDES MS4 permitting program is not applicable; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the estuary such that TN and TP concentrations meet the TMDL targets, which will require a 22% reduction of TN and a 14% reduction of TP, based on the mean concentrations from the 2004-2012 period.

(18) Hunter Spring, House Spring, Idiot's Delight Spring, Tarpon Spring, and Black Spring. The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L and an annual arithmetic mean orthophosphate concentration of 0.028 mg/L and are allocated as follows:

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

(b) The WLA for surface water discharges subject to the Department's NPDES MS4 permitting program is not applicable; and

(c) The LAs for nonpoint sources are to address anthropogenic sources in the spring such that nitrate-nitrite and orthophosphate concentrations meet the TMDL targets, which will require a 64% reduction of nitrate-nitrite for Hunter Spring, a 53% reduction of nitrate-nitrite for House Spring, a 26% reduction of nitrate-nitrite and a 7% reduction of orthophosphate for Idiot's Delight Spring, a 21% reduction of nitrate-nitrite and a 10% reduction of orthophosphate for Tarpon Spring, and a 26% reduction of nitrate-nitrite for Black Spring based on the mean concentrations from the 2004-2012 period.

(19) Chassahowitzka Main Spring, Chassahowitzka #1 Spring and Crab Creek Spring. The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Chassahowitzka Main Spring, Chassahowitzka #1 Spring and Crab Creek Spring, and are allocated as follows:

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

(b) The WLAs for discharges subject to the Department's NPDES MS4 permitting program are to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 62% reduction of nitrate-nitrite for Chassahowitzka Main Spring, a 64% reduction of nitrate-nitrite for Chassahowitzka #1 Spring, and a 64% reduction of nitrate-nitrite for Crab Creek Spring, based on mean concentrations from the 2004 - 2013 period; and

(c) The LAs for nonpoint sources are to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 62% reduction of nitrate-nitrite for Chassahowitzka Main Spring, a 64% reduction of nitrate-nitrite for Chassahowitzka #1 Spring, and a 64% reduction of nitrate-nitrite for Crab Creek Spring, based on mean concentrations from the 2004 - 2013 period.

(20) Chassahowitzka River-Baird Creek. The nutrient TMDL is an annual arithmetic mean TN concentration of 0.25 mg/L, and is allocated as follows:

(a) The WLA for NPDES wastewater 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 TN concentrations meet the TMDL target, which will require a 57% reduction of TN, based on mean concentrations from the 2004 - 2013 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-stream TN concentrations meet the TMDL target, which will require a 57% reduction of TN, based on mean concentrations from the 2004 - 2013 period.

(21) Baird #1 Spring and Ruth Spring. The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Baird #1 Main Spring and Ruth Spring, and are allocated as follows:

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

(22) Beteejay Spring. The nutrient TMDL is an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Beteejay Spring, and is allocated as follows:

(a) The WLA for NPDES wastewater 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-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 49% reduction of nitrate-nitrite, based on mean concentrations from the 2004 - 2013 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 49% reduction of nitrate-nitrite, based on mean concentrations from the 2004 - 2013 period.

(23) Homosassa #1 Spring, Homosassa #2 Spring, Homosassa #3 Spring, Pumphouse Springs and Trotter Springs. The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Homosassa #1 Spring, Homosassa #2 Spring, Homosassa #3 Spring, Pumphouse Springs and Trotter Springs, and are allocated as follows:

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

(b) The WLAs for discharges subject to the Department's NPDES MS4 permitting program are to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 65% reduction of nitrate-nitrite for Homosassa #1 Spring, a 63% reduction of nitrate-nitrite for Homosassa #2 Spring, a 66% reduction of nitrate-nitrite for Homosassa #3 Spring, a 65% reduction of nitrate-nitrite for Pumphouse Springs, and a 68% reduction of nitrate-nitrite for Trotter Springs, based on mean concentrations from the 2004 - 2013 period; and

(c) The LAs for nonpoint sources are to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 65% reduction of nitrate-nitrite for Homosassa #1 Spring, a 63% reduction of nitrate-nitrite for Homosassa #2 Spring, a 66% reduction of nitrate-nitrite for Homosassa #3 Spring, a 65% reduction of nitrate-nitrite for Pumphouse Springs, and a 68% reduction of nitrate-nitrite for Trotter Springs, based on mean concentrations from the 2004 - 2013 period.

(24) Bluebird Springs. The nutrient TMDL is an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Bluebird Spring, and is allocated as follows:

(a) The WLA for NPDES wastewater 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-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 69% reduction of nitrate-nitrite, based on mean concentrations from the 2004 - 2013 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 69% reduction of nitrate-nitrite, based on mean concentrations from the 2004 - 2013 period.

(25) Hidden River Main Spring and Hidden River #2 Spring. The nutrient TMDLs are an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Hidden River Main Spring and Hidden River #2 Spring, and are allocated as follows:

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

(b) The WLAs for discharges subject to the Department's NPDES MS4 permitting program are to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 76% reduction of nitrate-nitrite for Hidden River Main Spring and a 75% reduction of nitrate-nitrite for Hidden River #2 Spring, based on mean concentrations from the 2004 - 2013 period; and

(26) Magnolia-Aripeka Springs Group. The nutrient TMDL is an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vents in the Magnolia-Aripeka Springs Group, and is allocated as follows:

(a) The WLA for NPDES wastewater 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-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 77% reduction of nitrate-nitrite based on mean concentrations from the 2004 - 2014 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 77% reduction of nitrate-nitrite based on mean concentrations from the 2004 - 2014 period.

(27) Jenkins Creek Spring. The nutrient TMDL is an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vent of Jenkins Creek Spring, and is allocated as follows:

(a) The WLA for NPDES wastewater 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-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 73% reduction of nitrate-nitrite for Jenkins Creek Spring, based on mean concentrations from the 2004 - 2014 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 73% reduction of nitrate-nitrite for Jenkins Creek Spring, based on mean concentrations from the 2004 - 2014 period.

(28) Wilderness-Mud-Salt Springs Group. The nutrient TMDL is an annual arithmetic mean nitrate-nitrite concentration of 0.23 mg/L at the spring vents in the Wilderness-Mud-Salt Springs Group, and is allocated as follows:

(a) The WLA for NPDES wastewater 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-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 62% reduction of nitrate-nitrite based on mean concentrations from the 2004 - 2014 period; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that in-spring nitrate-nitrite concentrations meet the TMDL target, which will require a 62% reduction of nitrate-nitrite based on mean concentrations from the 2004 - 2014 period.

Notes

Fla. Admin. Code Ann. R. 62-304.645

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

New 6-3-08, Amended 11-14-12, 6-7-13, 11-25-13, Amended by Florida Register Volume 40, Number 107, June 3, 2014 effective 6/18/2014, Amended by Florida Register Volume 41, Number 097, May 19, 2015 effective 6/4/2015, Amended by Florida Register Volume 42, Number 230, November 29, 2016 effective 12/11/2016, Amended by Florida Register Volume 47, Number 081, April 27, 2021 effective 5/9/2021.

New 6-3-08, Amended 11-14-12, 6-7-13, 11-25-13, 6-18-14, 6-4-15, 12-11-16, 5-9-21.

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