Hillsborough River Basin TMDLs

DEPARTMENT OF ENVIRONMENTAL PROTECTION

RULE NO: RULE TITLE
62-304.610: Hillsborough River Basin TMDLs

NOTICE OF CHANGE

Notice is hereby given that the following changes have been made to the proposed rule in accordance with subparagraph 120.54(3)(d)1., F.S., published in Vol. 35 No. 31, August 7, 2009 issue of the Florida Administrative Weekly.

62-304.610 Hillsborough River Basin TMDLs.

(1) through (9) No change.

(10) Baker Creek. The Total Maximum Daily Loads (TMDLs) to address the low dissolved oxygen and nutrient impairments are an annual average 1.16 mg/L 23,652 pounds per year of Total Nitrogen (TN) and an annual average 0.473 mg/L 2,342 pounds per year of Total Phosphorus (TP) and are allocated as follows:

(a) No change.

(b) The WLAs for discharges subject to the Department’s National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permitting Program are an 26.1 80 percent reduction in anthropogenic loadings of TN and an 14.7 80 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at sources contributing to exceedances of the criteria,

(c) The Load Allocations (LAs) for nonpoint sources are an 26.1 80 percent reduction in anthropogenic loadings of TN and an 14.7 80 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(11) Big Ditch. The TMDLs to address the low dissolved oxygen and nutrient impairments are an annual average 1.16 mg/L 14,699 pounds per year of TN and an annual average 0.473 13,078 pounds per year mg/L of TP and are allocated as follows:

(a) The WLAs for the Hillsborough County CF Industries, Inc. Plant City Chemical Complex (FL0000078) are a five-year rolling annual average of 1,800 1,138 pounds per year of TN and a five-year rolling annual average of 5,438 847 pounds per year of TP,

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program are a 39.7 76 percent reduction in anthropogenic loadings of TN and a 76.3 76 percent reduction in anthropogenic loadings of TP for the 2000-2007 2005 to 2006 period at for sources contributing to exceedances of the criteria,

(c) The LAs for nonpoint sources are a 39.7 76 percent reduction in anthropogenic loadings of TN and a 76.3 76 percent reduction in anthropogenic loadings of TP for the 2000-2007 2005 to 2006 period for at sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(12) Channelized Stream. The TMDLs to address the low dissolved oxygen and nutrient impairments are an annual average 1.16 mg/L 4,821 pounds per year of TN and an annual average 0.473 mg/L 2,135 pounds per year of TP and are allocated as follows:

(a) No change.

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program are an 52.1 81 percent reduction in anthropogenic loadings of TN and an 60.5 81 percent reduction in anthropogenic loadings of TP for the 2000-2007 period at year 2005 for sources contributing to exceedances of the criteria, and

(c) The LAs for nonpoint sources are an 52.1 81 percent reduction in anthropogenic loadings of TN and an 60.5 81 percent reduction in anthropogenic loadings of TP for the 2000-2007 period at year 2005 for sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(13) No change.

(14) Mill Creek. The TMDLs to address the low dissolved oxygen and nutrient impairments are an annual average 1.16 mg/L 2,569 pounds per year of TN and an annual average 0.473 mg/L 795 pounds per year of TP and are allocated as follows:

(a) The WLAs for the Kerry I & F Contracting Company Hillsborough County Crystals International, Inc. (FL0037389) are a five-year rolling annual average 3,600 48.9 pounds per year of TN and a five-year rolling annual average 431 4.0 pounds per year of TP,

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program are an 41.1 80 percent reduction in anthropogenic loadings of TN and an 6.2 80 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at for sources contributing to exceedances of the criteria, and

(c) The LAs for nonpoint sources are an 41.1 80 percent reduction in anthropogenic loadings of TN and an 80 6.2 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period for sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(15) Spartman Branch. The TMDLs to address the low dissolved oxygen impairment is an annual average 1.16 mg/L are 3,110 pounds per year of total TN and 531 pounds per year of TP and is are allocated as follows:

(a) No change.

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program is are an a 19.9 80 percent reduction in anthropogenic loadings of TN and an 80 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at for sources contributing to exceedances of the criteria, and

(c) The LAs for nonpoint sources is a 19.9 are an 80 percent reduction in anthropogenic loadings of TN and an 80 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at for sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(16) No change.

(17) Trout Creek. The TMDLs to address the low dissolved oxygen and nutrient impairments are an annual average 0.87 mg/L 18,031 pounds per year of TN and an annual average 0.181 mg/L 838 pounds per year of TP and are allocated as follows:

(a) The WLAs for the Hillsborough County Pebble Creek Village Wastewater Treatment Facility (FL0039896) are a five-year rolling annual average 800 1,827 pounds per year of TN and a five-year rolling annual average 411 341 pounds per year of TP,

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program are a 33.3 50 percent reduction in anthropogenic loadings of TN and a 1.4 72 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at for sources contributing to exceedances of the criteria, and

(c) The LAs for nonpoint sources are a 33.3 50 percent reduction in anthropogenic loadings of TN and a 1.4 72 percent reduction in anthropogenic loadings of TP for the 2000-2007 1996 to 2002 period at for sources contributing to exceedances of the criteria, and

(d) through (e) No change.

(18) Two Hole Branch. The TMDLs to address the low dissolved oxygen and nutrient impairments is an annual average 1.16 mg/L are 4,459 pounds per year of TN and 1,307 pounds per year of TP and is are allocated as follows:

(a) No change.

(b) The WLAs for discharges subject to the Department’s NPDES Municipal Stormwater Permitting Program is are a 4.4 61 percent reduction in anthropogenic loadings of TN and a 61 percent reduction in anthropogenic loadings of TP for the 2000-2007 period at years 2002 and 2005 for sources contributing to exceedances of the criteria, and

(c) The LAs for nonpoint sources is are a 4.4 61 percent reduction in anthropogenic loadings of TN and a 61 percent reduction in anthropogenic loadings of TP for the 2000-2007 period at years 2002 and 2005 for sources contributing to exceedances of the criteria, and

(d) through (e) No change.

Specific Authority 403.061, 403.067 FS. Law Implemented 403.061, 403.062, 403.067 FS. History–New________.