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Compilation of Practices Observed in Nutrient Listing and Total Maximum Daily Loads

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In an effort to better understand common practices for identifying impaired waters and developing total maximum daily loads (TMDL) for nutrients, the authors initiated several information gathering activities. The research was conducted through surveys and interviews with Regional Environmental Protection Agency (EPA) staff responsible for approving Clean Water Act (CWA) Section 303(d) lists and TMDLs and through analysis of the national database on listings and TMDLs. This effort will help document the application of current practices and provide examples of how states have addressed nutrient pollution in 303(d) listings and TMDLs. The goal of this effort is to provide practitioners with additional tools that would better enable them to face the challenge of managing excess nutrients in waterbodies across the country in the future. This paper summarizes some of the relevant findings of this project and provides examples of the application of current practices in approved nutrient TMDLs.

Keywords: 303(d) List; Nitrogen; Nutrients; Phosphorus; TMDLs; impaired waters; response indicators

Document Type: Research Article


Publication date: January 1, 2011

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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