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National Summary
A key component of the federal effluent limitation requirements are the total maximum daily load (TMDL) provisions under Section 303(d) of the CWA. TMDLs are the amount of pollutant, or property of a pollutant, from point, nonpoint, and natural background sources, that may be discharged to receiving water that is water quality-limited. Any pollutant loading above the TMDL results in violation of an applicable water quality standard.
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Final Regulations
40 CFR 130 - Public Notice on the Internet of Region 7 Disapprovals of Clean Water Act Impaired Waters Lists
09/12/2008
National
Notices
Agency Information Collection Activities: Proposed Collection; Comment Request; National Water Quality Inventory Reports
05/21/2003
National
Notices
Agency Information Collection Activities; Notification of Substantial Risk of Injury to Health and the Environment Under TSCA Section 8(e)
08/21/2009
National
Guidance Documents
An Approach for Using Load Duration Curves in the Development of TMDLs
National
Notices
Availability of TMDLs and Determinations That TMDLs Are Not Needed; Calcasieu and Ouachita River Basins
04/01/2002
National
Notices
Availability of TMDLs and Determinations That TMDLs Are Not Needed; Public Comment Continuation
12/13/2001
National
Notices
Calcasieu and Ouachita River Basins, LA: Final Agency Action on TMDLs
06/15/2002
National
Notices
Calcasieu and Ouachita River Basins: Availability of 11 TMDLs and Determinations That 4 TMDLs Are Not Needed
04/24/2002
National
Notices
Certain New Chemicals; Receipt and Status Information
08/08/2008
National
Notices
Clean Water Act Section 303(d), Availability of TMDLs
12/09/2004
National
Notices
Clean Water Act Section 303(d): Availability of 1 TMDL
12/20/2002
National
Notices
Clean Water Act Section 303(d): Availability of 1 Total Maximum Daily Loads
03/10/2005
National
Notices
Clean Water Act Section 303(d): Availability of 10 Total Maximum Daily Loads
12/13/2006
National
Notices
Clean Water Act Section 303(d): Availability of 12 Modified TMDLs
12/18/2002
National
Notices
Clean Water Act Section 303(d): Availability of 12 Total Maximum Daily Loads (TMDL) in Louisiana
08/20/2009
National
Notices
Clean Water Act Section 303(d): Availability of 13 Total Maximum Daily Loads
01/10/2005
National
Notices
Clean Water Act Section 303(d): Availability of 16 Total Maximum Daily Loads in Louisiana
02/01/2008
National
Notices
Clean Water Act Section 303(d): Availability of 20 Total Maximum Daily Loads in Louisiana
10/30/2007
National
Notices
Clean Water Act Section 303(d): Availability of 28 Total Maximum Daily Loads (TMDLs) in Louisiana
11/11/2011
National
Notices
Clean Water Act Section 303(d): Availability of 28 Total Maximum Daily Loads (TMDLs) in Louisiana
12/12/2011
National
Notices
Clean Water Act Section 303(d): Availability of 29 Total Maximum Daily Loads in Louisiana
07/18/2007
National
Notices
Clean Water Act Section 303(d): Availability of 3 Total Maximum Daily Loads (TMDLs)
10/01/2003
National
Notices
Clean Water Act Section 303(d): Availability of 3 Total Maximum Daily Loads (TMDLs)
04/12/2004
National
Notices
Clean Water Act Section 303(d): Availability of 30 Modified Total Maximum Daily Loads (TMDLs) in Louisiana
08/27/2008
National
Notices
Clean Water Act Section 303(d): Availability of 34 Total Maximum Daily Loads in Louisiana
10/25/2007
National
Notices
Clean Water Act Section 303(d): Availability of 37 TMDLs
10/20/2002
National
Notices
Clean Water Act Section 303(d): Availability of 4 Total Maximum Daily Loads (TMDL)
02/09/2004
National
Notices
Clean Water Act Section 303(d): Availability of 43 Total Maximum Daily Loads
11/10/2005
National
Notices
Clean Water Act Section 303(d): Availability of 5 TMDLs
08/04/2003
National
Notices
Clean Water Act Section 303(d): Availability of 52 Total Maximum Daily Loads
06/28/2007
National
Notices
Clean Water Act Section 303(d): Availability of 8 Total Maximum Daily Loads (TMDLs) for Arkansas
08/12/2009
National
Notices
Clean Water Act Section 303(d): Availability of 86 Total Maximum Daily Loads in Arkansas
12/17/2007
National
Notices
Clean Water Act Section 303(d): Availability of EPA's Decision To Add Bear Creek to Colorado's 2006 List of Water Quality-Limited Segments in Need of TMDLs
04/25/2006
National
Notices
Clean Water Act Section 303(d): Availability of List Decision
06/05/2003
National
Notices
Clean Water Act Section 303(d): Availability of List Decision; Wisconsin
06/19/2003
National
Notices
Clean Water Act Section 303(d): Availability of List Decisions
12/15/2002
National
Notices
Clean Water Act Section 303(d): Availability of List Decisions
03/19/2003
National
Notices
Clean Water Act Section 303(d): Availability of List Decisions
03/15/2007
National
Notices
Clean Water Act Section 303(d): Availability of List Decisions
02/15/2008
National
Notices
Clean Water Act Section 303(d): Availability of List Decisions
06/17/2008
National
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