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Clean Water Act Section 303(d): Final Agency Action on 30 Total Maximum Daily Loads (TMDLs) in Louisiana

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Environmental Protection Agency (EPA).


Notice of availability.


This notice announces final agency action on 30 TMDLs prepared by EPA Region 6 for waters listed in Louisiana's Terrebonne River Basin, under section 303(d) of the Clean Water Act (CWA). Documents from the administrative record file for the 30 TMDLs, including TMDL calculations and responses to comments, may be Start Printed Page 58950viewed at​region6/​water/​npdes/​tmdl/​index.htm. The administrative record file may be examined by calling or writing Ms. Diane Smith at the address below. Please contact Ms. Smith to schedule an inspection.

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Diane Smith, Environmental Protection Specialist, Water Quality Protection Division, U.S. EPA Region 6, 1445 Ross Avenue, Dallas, TX 75202-2733, (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 Takes Final Agency Action on 30 TMDLs

By this notice EPA is taking final agency action on the following 30 TMDLs for waters located within the Terrebonne River basin:

SubsegmentWaterbody namePollutant
120102Bayou PoydrasDissolved Oxygen and Nutrients.
120103Bayou ChoctawDissolved Oxygen, Nutrients, Nitrogen, and Phosphorus.
120105Chamberlin CanalDissolved Oxygen, Nutrients, Nitrogen, and Phosphorus.
120106Bayou PlaquemineDissolved Oxygen and Nutrients.
120107Upper Grand River and Lower Flat River—Headwaters to Intracoastal WaterwayDissolved Oxygen
120109Intracoastal Waterway—in Morgan City to Port Allen Route—Port Allen Locks to Bayou Sorrel LocksDissolved Oxygen and Nutrients
120110Bayou Cholpe—Headwaters to Bayou ChoctawDissolved Oxygen.
120202Bayou Black—Intracoastal Waterway to HoumaDissolved Oxygen and Nutrients.
120204Lake Verret and Grassy LakeDissolved Oxygen and Nutrients.
120304Intracoastal Waterway—Houma to LaroseDissolved Oxygen and Nutrients.
120403Intracoastal Waterway—Bayou BoeufDissolved Oxygen.
120604Bayou Blue—Intracoastal Waterway to boundary between segments 1206 and 1207Dissolved Oxygen.
120401Bayou Penchant—Bayou Chene to Lake PenchantDissolved Oxygen.
120404Lake PenchantDissolved Oxygen.
120405Lake Hatch and Lake TheriotDissolved Oxygen and Nutrients.
120406Lake de CadeDissolved Oxygen and Nutrients.

EPA requested the public to provide EPA with any significant data or information that might impact the 30 Final TMDLs in the Federal Register Notice: Volume 73, Number 167, pages 50610 and 50611 (August 27, 2008). The comments which were received, the EPA's response to comments, and the final TMDLs may be found at​region6/​water/​npdes/​tmdl/​index.htm.

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Dated: September 30, 2008.

William K. Honker,

Deputy Director, Water Quality Protection Division, EPA Region 6.

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[FR Doc. E8-23868 Filed 10-7-08; 8:45 am]