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Clean Water Act Section 303(d): Availability of 29 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 29 TMDLs and the calculations for these TMDLs prepared by EPA Region 6 for waters listed in the Red, Sabine, and Pearl River 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 September 4, 2007.


Comments on the 29 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 29 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 these 29 TMDLs pursuant to a consent decree entered in this lawsuit.

EPA Seeks Comment on 29 TMDLs

By this notice EPA is seeking comment on the following 29 TMDLs for waters located within Louisiana basins:

SubsegmentWaterbody namePollutant
090101Pearl River—MS State Line to Pearl River Navigation CanalMercury.
090102East Pearl River—Holmes Bayou to I-10Mercury.
090103East Pearl River—From I-10 to Lake Borgne (estuarine)Mercury.
090105Pearl River Navigation Canal—From Pools Bluff to Lock No. 3Mercury.
090106Holmes Bayou—From the Pearl River to the West Pearl River (scenic)Mercury.
090107Pearl River—From Pearl River Navigation Canal to Holmes BayouMercury.
090201West Pearl River—From Headwaters to confluence with Holmes Bayou (scenic)Mercury.
090202-5126Morgan River—From Porters River to its confluence with Pearl River (scenic)Mercury.
090203Lower Bogue Chitto—From River Navigation Canal to Wilsons SloughMercury.
090204Pearl River Navigation Canal—Below Lock No. 3Mercury.
090205Wilson Slough—Bogue Chitto to West Pearl RiverMercury.
090206Bradley Slough—Bogue Chitto to West Pearl RiverMercury.
090207Middle Pearl River and West Middle Pearl River—From West Pearl River to Little LakeMercury.
090207-5112Morgan Bayou—Headwaters near I-10 to confluence with Middle RiverMercury.
090501Bogue Chitto River—From MS State Line to Pearl River Navigation Canal (scenic)Mercury.
100401-0556575Ivan LakeMercury.
100703Black Lake and Clear LakeMercury.
100705Kepler LakeMercury.
100709Grand Bayou—Headwaters to Black Lake BayouMercury.
100709-001Grand Bayou ReservoirMercury.
100803Saline Bayou—From Saline Lake to Red RiverMercury.
101302Iatt LakeMercury.
101501Big Saline Bayou—Catahoula Lake to Saline LakeMercury.
101502Saline LakeMercury.
101504Saline Bayou—Larto Lake to Saline Lake (scenic)Mercury.
101505Larto LakeMercury.
101506Big Creek—Headwaters to Saline LakeMercury.
110101Toledo Bend Reservoir—TX-LA Line to Toledo Bend DamMercury.
110503Vernon LakeMercury.

EPA requests that the public provide to EPA any water quality related data and information that may be relevant to the calculations for the 29 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: July 9, 2007.

Miguel I. Flores,

Director, Water Quality Protection Division, EPA Region 6.

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[FR Doc. E7-13897 Filed 7-17-07; 8:45 am]