62-304.515. Kissimmee River Basin TMDLs  


Effective on Thursday, January 30, 2020
  • 1(1) Lake Holden: The nutrient total maximum daily load (TMDL) for Lake Holden is 148 lb/year of total phosphorus (TP) and 10,526 lb/year of total nitrogen (TN), and is allocated as follows:

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

    45(b) The WLA for discharges subject to the Department’s National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Permitting Program is a 74.0% reduction of TP based on the year 2000 landuse and a modeling period from 1996 through 2000;

    88(c) The load allocation (LA) for nonpoint sources is a 74.0% reduction of TP based on the year 2000 landuse and a modeling period from 1996 through 2000; and,

    117(d) The Margin of Safety is implicit.

    124(e) While the LA and WLA for TP and TN has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody. However, it is not the intent of this TMDL to abate natural background conditions.

    189(2) Lake Cypress: The nutrient TMDL for Lake Cypress is 1,374,801 lb/year of TN and 51,175 lb/year of TP, and is allocated as follows:

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

    226(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 5.0% reduction of TN and 35.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006;

    264(c) The LA for nonpoint sources is a 5.0% reduction of TN and 35.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006; and,

    296(d) The Margin of Safety is implicit.

    303(e) While the LA and WLA for TP and TN nutrients have been expressed as the percent reductions needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody. However, it is not the intent of the TMDL to abate natural background conditions.

    369(3) Lake Marian: The nutrient TMDL for Lake Marian is 88,122 lb/year of TN and 6,013 lb/year of TP, and is allocated as follows:

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

    405(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 55.0% reduction of TN and 53.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006;

    443(c) The LA for nonpoint sources is a 55.0% reduction of TN and 53.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006; and,

    475(d) The Margin of Safety is implicit.

    482(e) While the WLA and LA for TN and TP have been expressed as the percent reductions needed to attain the applicable Class III nutrients criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody. However, it is not the intent of the TMDL to abate natural background conditions.

    547(4) Lake Jackson: The nutrient and dissolved oxygen (DO) TMDL for Lake Jackson is 118,662 lb/year of TN and 5,553 lb/year of TP, and is allocated as follows:

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

    587(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is 20.0% reduction of TN and 25.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006;

    624(c) The LA for nonpoint sources is 20.0% reduction of TN and 25.0% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006; and,

    655(d) The Margin of Safety is implicit.

    662(e) While the WLA and LA for TN and TP have been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient condition in the impaired waterbody. However, it is not the intent of the TMDL to abate natural background conditions.

    727(5) Lake Kissimmee: The nutrient TMDL for Lake Kissimmee is 2,795,484 lb/year of TN and 126,517 lb/year of TP, and is allocated as follows:

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

    764(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 15.0% reduction of TN and 17% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006;

    802(c) The LAs for nonpoint sources are 15% reduction of TN and 17% reduction of TP based on the year 2000 landuse and a modeling period from 2000 through 2006; and,

    833(d) The Margin of Safety is implicit.

    840(e) While the WLA and LA for TN and TP have been expressed as the percent reductions needed to attain the applicable Class III nutrients criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody. However, it is not the intent of the TMDL to abate natural background conditions.

    905(6) Lake Persimmon. The nutrient TMDL for Lake Persimmon is a seven-year rolling average of annual loads of 1,247 pounds per year (lb/year) TN and 58 lb/year TP, which is intended to achieve the applicable annual geometric mean chlorophyll 945a 946criterion for low color and high alkalinity lakes, and is allocated as follows:

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

    969(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 42% reduction of TN (calculated from 2,153 lb/year) and a 51 % reduction of TP (calculated from 119 lb/year), which are based on the highest seven-year rolling average of annual loads from the 2005-2016 period,

    1020(c) The LA for nonpoint sources is a 42 % reduction of TN (calculated from 2,153 lb/year) and a 51% reduction of TP (calculated from 119 lb/year), which are based on the highest seven-year rolling average of annual loads from the 2005-2016 period, and

    1065(d) The Margin of Safety is implicit.

    1072(e) While the LA for TN and TP has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody. However, it is not the intent of this TMDL to abate natural background conditions.

    1135(7) Reedy Lake. The nutrient TMDL for Reedy Lake is an AGM concentration of 0.95 mg/L TN and 0.03 mg/L TP, which are intended to achieve the applicable chlorophyll 1164a 1165criterion for low color and high alkalinity lakes, and is allocated as follows:

    1178(a) The WLA for wastewater sources is not applicable;

    1187(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 54% reduction of TN (calculated from 2.05 mg/L) and 0 % reduction of TP, which is based on the highest AGM concentrations from the 2000 – 2016 period;

    1230(c) The LA for nonpoint sources is 54% 1238reduction of TN (calculated from 2.05 mg/L) and 0 % reduction of TP, which is based on the highest AGM concentration from the 2000 ‒ 2016 period, and

    1266(d) The Margin of Safety is implicit.

    1273(e) While the LA for TN and TP has been expressed as the percent re1288duction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody.

    1323(8) Lake Ida. The nutrient TMDL for Lake Ida is an AGM concentration of 0.95 mg/L TN and 0.03 mg/L TP, which are intended to achieve the applicable chlorophyll 1352a 1353criterion for low color and high alkalinity lakes, and is allocated as follows:

    1366(a) The WLA for wastewater sources is not applicable;

    1375(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 87% reduction of TN (calculated from 13967.16 1397mg/L) and 0 % reduction of TP, which is based on the highest AGM concentrations from the 2000 – 2016 period;

    1418(c) The LA for nonpoint sources is 87% reduction of TN (calculated from 14317.16 1432mg/L) and 0 % reduction of TP, which is based on the highest AGM concentration from the 2000 1450‒ 2016 period, and

    1454(d) The Margin of Safety is implicit.

    1461(e) While the LA for TN and TP has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and 1495nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody.

    1510(9) Hickory Lake. The nutrient TMDL for Hickory Lake is an AGM concentration of 0.95 mg/L TN and 0.03 mg/L TP, which are intended to achieve the applicable chlorophyll 1539a 1540criterion for low color and high alkalinity lakes, and is allocated as follows:

    1553(a) The WLA for wastewater sources is not applicable;

    1562(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 69% reduction of TN (calculated from 3.07 mg/L) and 0 % reduction of TP, which is based on the highest AGM concentrations from the 2000 – 2016 period;

    1605(c) The LA for nonpoint sources is 69 % reduction of TN (calculated from 3.07 mg/L) and 0 % reduction of TP, which is based on the highest AGM concentration from the 2000 - 2016 period, and

    1642(d) The Margin of Safety is implicit.

    1649(e) While the LA for TN and TP has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody.

    1698(10) Lake Clinch. The nutrient TMDL for Lake Clinch is an AGM concentration of 0.62 mg/L TN and 0.01 mg/L TP, which are intended to achieve the applicable chlorophyll 1727a 1728criterion for low color and low alkalinity lakes, and is allocated as follows:

    1741(a) The WLA for wastewater sources is not applicable;

    1750(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 18% reduction of TN (calculated from 0.76 mg/L) and 50% reduction of TP (calculated from 0.02 mg/L), which is based on the highest AGM concentrations from the 2000 – 2016 period;

    1796(c) The LA for nonpoint sources is 18% reduction of TN (calculated from 0.76 mg/L) and 50% reduction of TP (calculated from 0.02 mg/L), which is based on the highest AGM concentration from the 2000 - 2016 period, and

    1835(d) The Margin of Safety is implicit.

    1842(e) While the LA for TN and TP has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody.

    1891(11) Lake Adelaide. The nutrient TMDL for Lake Adelaide is an AGM concentration of 0.62 mg/L TN and 0.01 mg/L TP, which are intended to achieve the applicable chlorophyll 1920a 1921criterion for low color and low alkalinity lakes, and is allocated as follows:

    1934(a) The WLA for wastewater sources is not applicable;

    1943(b) The WLA for discharges subject to the Department’s NPDES MS4 Permitting Program is a 6 % reduction of TN (calculated from 0.66 mg/L) and 50% reduction of TP (calculated from 0.02 mg/L), which is based on the highest AGM concentrations from the 2000 – 2016 period;

    1990(c) The LA for nonpoint sources is 6% reduction of TN (calculated from 0.66 mg/L) and 50% reduction of TP (calculated from 0.02 mg/L), which is based on the highest AGM concentration from the 20242000 - 2016 period, and

    2029(d) The Margin of Safety is implicit.

    2036(e) While the LA for TN and TP has been expressed as the percent reduction needed to attain the applicable Class III nutrient criteria, it is the combined reductions from both anthropogenic point and nonpoint sources that will result in the restoration of nutrient conditions in the impaired waterbody.

    2085Rulemaking Authority 2087403.061, 2088403.067 FS. 2090Law Implemented 2092403.061, 2093403.062, 2094403.067 FS. 2096History–New 12-17-13, Amended 11-15-18, 1-30-20.