Laws & Regulations
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TMDLs at Work: Peconic Estuary
The documents detail the Peconic Estuary TMDL at work.
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Guidance for 1994 CWA Section 303(d) Lists
The memo discusses minimum requirements for the April 1994 State lists of waterbodies requiring TMDLs under section 303(d) of the Clean Water Act (CWA).
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Treatment of Indian Tribes in a Similar Manner as States for Purposes of Section 303(d) of the Clean Water Act
Prepublished version of the Treatment of Indian Tribes in a Similar Manner as States for Purposes of Section 303(d) of the Clean Water Act
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National Corn Growers Association Clean Water Act and TMDL Program: An Introduction and Basic Desk Reference for Corn Growers
The primer from the National Corn Growers Association includes information on the Clean Water Act, TMDLs, a hypothetical TMDL case study and opportunities for the agricultural community's involvement in development and implementation of TMDLs.
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Draft Considerations for the Development of Multijurisdictional TMDLs
The memorandum is intended to provide recommendations for TMDL practitioners to consider concerning development of multijurisdictional TMDLs.
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Guidelines for Reviewing TMDLs Under Existing Regulations Issued in 1992
The document details guidelines for reviewing TMDLs under existing regulations issued in 1992.
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Nutrient TMDL Workshop
Agenda from the February 2011 nutrient TMDL workshop.
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Clarification of the Use of Biological Data and Information in the 2002 Integrated Water Quality Monitoring and Assessment Report Guidance
The memorandum modifies the 2002 Integrated Water Quality Monitoring and Assessment Report Guidance to provide clarity and promote consistency in the manner in which states use biological data and information in developing their 2002 submissions.
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Supplemental Information for Reviewing Reasonable Assurance in TMDLs
This is a memo addressing state development and EPA review of reasonable assurance in TMDLs, distributed in February of 2012. This is currently considered active OWOW guidance (July 2020).
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EPA Issues November 15, 2010 Memorandum: Integrated Reporting and Listing Decisions Related to Ocean Acidification
The memorandum provides information to assist regions and states in preparing and reviewing Integrated Reports related to ocean acidification (OA) impacts under Sections 303(d), 305(b) and 314 of the Clean Water Act (CWA).
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Partial Approval and Partial Disapproval of Washington 2014-2018 303d List
EPA's partial approval and partial disapproval of Washington's 2014-2018 303(d) list.
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Incorporating Green Infrastructure into TMDLs
The fact sheet provides examples of how some states describe green infrastructure and low impact development activities in their TMDL implementation sections to address stormwater-source impaired waters.
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Method 3C - Carbon Dioxide, Methane, Nitrogen and Oxygen Concentrations - Thermal Conductivity Detector
CFR Promulgated Test Method 3C - Determination of carbon dioxide, methane, nitrogen, and oxygen from stationary sources using a Thermal Conductivity Detector.
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Method 5D - Particulate Matter Baghouses
CFR Promulgated Test Method 5D PM Baghouses (Particulate Matter)
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Method 1A - Small Ducts
Method 1A - Small Ducts
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Method 13A - Total Fluoride - SPADNS Zirconium Lake
CFR Promulgated Test Method 13A Determination of Total Fluoride Emissions From Stationary Sources (SPADNS Zirconium Lake Method)
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Method 2D - Rate Meters
Test Method 2D, Measurement of gas volume flow rates in small pipes and ducts.
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Method 2A - Volume Meters
CFR Promulgated Test Method 2A, Direct Measurement of Gas Volume Through Pipes and Small Ducts.
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Method 5E - Particulate Matter Fiberglass Plants
CFR Promulgated Test Method 5E PM Fiberglass Plants (Particulate Matter)
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Method 2C - Standard Pitot
CFR Promulgated Test Method 2C Standard Pitot