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Clean Water Act Section 303(d): Availability of 20 Total Maximum Daily Loads (TMDL) in Louisiana

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Environmental Protection Agency (EPA).


Notice of availability.


This notice announces the availability for comment of the administrative record files for 20 TMDLs and the calculations for these TMDLs prepared by EPA Region 6 for waters listed in the Red and the Terrebonne Basins of Louisiana, under section 303(d) of the Clean Water Act (CWA). These TMDLs were completed in response to a court order in the lawsuit styled Sierra Club, et al. v. Clifford, et al., No. 96-0527, (E.D. La.).


Comments must be submitted in writing to EPA on or before November 29, 2007.


Comments on the 20 TMDLs should be sent to Diane Smith, Environmental Protection Specialist, Water Quality Protection Division, U.S. Environmental Protection Agency Region 6, 1445 Ross Ave., Dallas, TX 75202-2733 or e-mail: For further information, contact Diane Smith at (214) 665-2145 or fax 214.665.7373. The administrative record files for the 20 TMDLs are available for public inspection at this address as well. Documents from the administrative record files may be viewed at​earth1r6/​6wq/​npdes/​tmdl/​index.htm, or obtained by calling or writing Ms. Smith at the above address. Please contact Ms. Smith to schedule an inspection.

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Diane Smith at (214) 665-2145.

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In 1996, two Louisiana environmental groups, the Sierra Club and Louisiana Environmental Action Network (plaintiffs), filed a lawsuit in Federal Court against the EPA, styled Sierra Club, et al. v. Clifford, et al., No. 96-0527, (E.D. La.). Among other claims, plaintiffs alleged that EPA failed to establish Louisiana TMDLs in a timely manner. EPA proposes 15 of these TMDLs pursuant to a consent decree entered in this lawsuit.

EPA Seeks Comment on 20 TMDLs

By this notice EPA is seeking comment on the following 20 TMDLs for waters located within Louisiana basins:

SubsegmentWaterbody namePollutant
100404Cypress Bayou ReservoirDissolved Oxygen.
100405Black Bayou (including Black Bayou Reservoir)Dissolved Oxygen.
120202Bayou Black—Intracoastal Waterway to HoumaNutrients and Dissolved Oxygen.
120204Lake Verret and Grassy LakeNutrients and Dissolved Oxygen.
120304Intracoastal Waterway—Houma to LaroseNutrients and Dissolved Oxygen.
120401Bayou Penchant—Bayou Chene to Lake PenchantDissolved Oxygen.
120403Intracoastal Waterway—Bayou Boeuf Lake PenchantDissolved Oxygen.
120404Dissolved Oxygen.
120405Lake Hache, Lake TheriotNutrients and Dissolved Oxygen.
120406Lake de CadeNutrients and Dissolved Oxygen.
120604Bayou Blue—Intracoastal Waterway to boundary between segments 1206 and 1207Dissolved Oxygen.
120708Lost Lake, Four League BayNutrients and Dissolved Oxygen.
120709Bayou Petite Cailou—From Houma Navigation Canal to Terrebonne BayNutrients and Dissolved Oxygen.

EPA requests that the public provide to EPA any water quality related data and information that may be relevant to the calculations for the 20 TMDLs. EPA will review all data and information submitted during the public comment period and revise the TMDLs where appropriate. EPA will then forward the TMDLs to the Louisiana Department of Environmental Quality (LDEQ). The LDEQ will incorporate the TMDLs into its current water quality management plan.

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Dated: October 23, 2007.

James R. Brown,

Chief, Planning and Analysis Branch, EPA Region 6.

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[FR Doc. E7-21322 Filed 10-29-07; 8:45 am]