Fla. Admin. Code Ann. R. 62-304.410 - Santa Fe River Basin TMDLs

(1) Santa Fe River TMDLs. Santa Fe River TMDL for nutrient and dissolved oxygen impairments: The TMDL for nutrients in the Santa Fe River (below river rise) is to achieve a monthly average of 0.35 mg/L nitrate-nitrite, 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 meet a monthly average in-stream ambient water quality target of 0.35 mg/L nitrate-nitrite. The range of reduction necessary to achieve the LA is estimated between 13 and 35% depending on the month and location within the basin. Achievement of the TMDL constitutes meeting the water quality target; and

(c) The LA for nonpoint sources is to meet a monthly average of 0.35 mg/L nitrate-nitrite. The range of percent reduction necessary to achieve the LA is estimated between 13 and 35% depending on the month and location within the basin. Achievement of the TMDL constitutes meeting the water quality target.

(2) New River TMDL. The bacteriological TMDL for New River 400 counts/100mL 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 not applicable; 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 1995 to 2007 period, will require a 45% reduction at sources contributing to exceedances of the criteria.

(3) New River TMDL. The DO TMDL for the New River 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 not applicable; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that there is a 38% reduction of current anthropogenic TN loading to the upper portion of the New River, a 13% reduction of current anthropogenic TN loading to the lower portion of the New River, and a 38% reduction of current anthropogenic TP loading to the lower portion of the New River, based on measured concentrations from the 1995 to 2006 period.

(4) Alligator Lake TMDLs. The nutrient and DO TMDL in Alligator Lake is 42, 595 pounds/year of TN (a 28.4% reduction) and 3, 050 pounds/year of TP (a 61.2% reduction) 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 not applicable; and

(c) The LAs for nonpoint sources are 42, 595 pounds/year of TN and 3, 050 pounds/year of TP.

(5) Santa Fe River Basin Fecal Coliform TMDLs. For each Class III surface water of the state in the Santa Fe River Basin verified as impaired for fecal coliform, the TMDL is 400 counts/100 mL fecal coliform and shall be allocated as follows:

(a) The WLA for NPDES wastewater point sources is established by their NPDES permit conditions included to attain the fecal coliform criteria;

(b) The WLA for discharges subject to the Department's NPDES MS4 Permitting Program is to address anthropogenic sources in the basin such that the in-waterbody concentrations meet the 400 counts/100 mL fecal coliform criterion; and

(c) The LA for nonpoint sources is to address anthropogenic sources in the basin such that the in-waterbody concentrations meet the 400 counts/100 mL fecal coliform criterion.

Notes

Fla. Admin. Code Ann. R. 62-304.410

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

New 11-16-08, Amended 12-7-08, Amended by Florida Register Volume 40, Number 171, September 3, 2014 effective 9/14/2014, Amended by Florida Register Volume 47, Number 081, April 27, 2021 effective 5/9/2021.

New 11-16-08, Amended 12-7-08, 9-14-14, 5-9-21.