Section 62-304.705 - St. Lucie River Basin TMDLs(1) St. Lucie Estuary (Lower & Middle Estuary). The TMDLs for the St. Lucie Estuary, based on data in the period from 1996 through 2005, are to achieve 0.081 mg/L TP and 0.72 mg/L TN at Roosevelt Bridge and are allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are a 21.4% reduction of TN and a 41.3% reduction of TP; and(c) The LAs for nonpoint sources are a 21.4% reduction of TN and a 41.3% reduction of TP.(2) North Fork St. Lucie River (Freshwater). The TMDLs for the North St. Lucie (Freshwater) are to achieve 0.081 mg/L TP, 0.72 mg/L TN, and 2.0 mg/L BOD for this segment. Based on data in the period from 1996 to 2005, the cumulative load from all sources is 140, 134 lbs/year TN, 15, 765 lbs/year TP and 2.0 mg/L BOD allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 25.0% reduction of TN, 42.2% reduction of TP, and 74.0% reduction of BOD; and(c) The LAs for nonpoint sources are 25.0% reduction of TN, 42.2% reduction of TP, and 74.0% reduction of BOD.(3) North Fork St. Lucie Estuary (Estuarine North Fork). The TMDLs for the North Fork St. Lucie Estuary (Estuarine North Fork) are to achieve 0.081 mg/L TP and 0.72 mg/L TN in this estuary segment. Based on data in the period from 1996 to 2005, the cumulative load from all sources is 103, 747 lbs/year TN and 11, 672 lbs/year TP allocated as follows:(a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 28.8% reduction of TN and 58.1% reduction of TP; and(c) The LAs for nonpoint sources are 28.8% reduction of TN and 58.1% reduction of TP.(4) C-24 Canal. The TMDLs for the C-24 Canal are to achieve 0.081 mg/L TP, 0.72 mg/L TN, and 2.0 mg/L BOD for the canal segment. Based on data in the period from 1996 to 2005, the cumulative load from all sources is 348, 957 lbs/year TN, 39, 258 lbs/year TP and 2.0 mg/L BOD allocated as follows:(a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 51.8% reduction of TN, 72.2% reduction of TP, and 33.3% reduction of BOD; and(c) The LAs for nonpoint sources are 51.8% reduction of TN, 72.2% reduction of TP, and 33.3% reduction of BOD.(5) C-23 Canal. The TMDLs for the C-23 Canal are to achieve 0.081 mg/L TP and 0.72 mg/L TN in the canal segment. Based on data in the period from 1996 through 2005, the cumulative load from all sources is 242, 202 lbs/year TN and 27, 248 lbs/year TP allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 51.7% reduction of TN and 78.6% reduction of TP; and(c) The LAs for nonpoint sources are 51.7% reduction of TN and 78.6% reduction of TP.(6) South Fork St. Lucie Estuary. The TMDLs for the South Fork St. Lucie Estuary are to achieve 0.081 mg/L TP and 0.72 mg/L TN in this estuary segment. Based on data in the period from 1996 through 2005, the cumulative load from all sources is 24, 463 lbs/year TN and 2, 752 lbs/year TP allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 38.4% reduction of TN and 57.2% reduction of TP; and(c) The LAs for nonpoint sources are 38.4% reduction of TN and 57.2% reduction of TP.(7) South Fork St. Lucie River. The TMDLs for the South Fork St. Lucie River are to achieve 0.081 mg/L TP and 0.72 mg/L TN in this river segment. Based on data in the period from 1996 through 2005, the cumulative load from all sources is 90, 471 lbs/year TN and 10, 178 lbs/year TP allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 47.1% reduction of TN and 61.8% reduction of TP; and(c) The LAs for nonpoint sources are 47.1% reduction of TN and a 61.8% reduction of TP.(8) Bessey Creek. The TMDLs for Bessey Creek are to achieve 0.081 mg/L TP and 0.72 mg/L TN in the creek segment. Based on data in the period from 2000 through 2005, the cumulative load from all sources is 29, 981 lbs/year TN and 3, 373 lbs/year TP allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program is 23.9% reduction of TN and 51.2% reduction of TP; and(c) The LAs for nonpoint sources is 23.9% reduction of TN and 51.2% reduction of TP.(9) C-44 Canal. The TMDLs for the C-44 Canal are to achieve 0.081 mg/L TP, 0.72 mg/L TN, and 2.0 mg/L BOD in this canal segment. Based on data in the period from 1996 through 2005, the cumulative load from all sources is 242, 929 lbs/year TN, 27, 330 lbs/year TP and 2.0 mg/L BOD allocated as follows: (a) The WLA for wastewater sources is not applicable;(b) The WLAs for discharges subject to the Department's NPDES MS4 Permitting Program are 51.2% reduction of TN, 55.0% reduction of TP, and 69.7% reduction of BOD; and(c) The LAs for nonpoint sources are 51.2% reduction of TN, 55.0% reduction of TP, and 69.7% reduction of BOD.(10) St. Lucie River (North Fork). The bacteriological TMDL for the St. Lucie River (North Fork) 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 2003 to 2007 period, will require a 66% 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 2003 to 2007 period, will require a 66% reduction of sources contributing to exceedances of the criteria.(11) Tenmile Creek. The bacteriological TMDL for the Tenmile 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 and 2007 period, will require a 81% 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 2007 period, will require a 81% reduction of sources contributing to exceedances of the criteria.Fla. Admin. Code Ann. R. 62-304.705
Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.061, 403.062, 403.067 FS.
New 3-26-09, Amended 5-14-12, Amended by Florida Register Volume 47, Number 081, April 27, 2021 effective 5/9/2021.New 3-26-09, Amended 5-14-12, 5-9-21.