Skip to main content

Developing Numeric Nutrient Criteria: Influence of TMDLs

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial

Abstract:

In 1998, the United States Environmental Protection Agency (USEPA) released the “National Strategy for Development of Regional Nutrient Criteria,” which called for states and authorized tribes to establish numeric criteria for nutrients (nitrogen and phosphorus) in their water quality standards. Currently, most states are in the process of developing numeric criteria. However, until such criteria is established, a wastewater discharge permit writer or person developing a total maximum daily load (TMDL) is responsible for assembling site-specific data and developing appropriate permit limits for nutrients on a site-by-site basis. Several recent nutrient and dissolved oxygen TMDLs have been used to set discharge permit limits on phosphorus and nitrogen. This presentation focuses on the Androscoggin River TMDL (Maine), TMDL for Nutrients in the Lower St. Johns River (LSJR) (Florida), and Draft TMDL and Managed Implementation Plan (MIP) for Spokane River and Long Lake (Washington) as concrete examples of setting site-specific numeric nutrient criteria. Comparison of the methods used in each of these TMDLs and MIP to determine nutrient criteria to existing and proposed state and federal methods is presented. In many cases, states will be looking to federal guidance, recent and existing TMDLs, and watershed management plans to guide the development state-wide numeric nutrient criteria. Active participation by water resource managers and other stakeholders in state level work groups addressing nutrient TMDLs and nutrient criteria is critical for development of water quality standards that are achievable and protective of the water body.

Keywords: Nutrients; TMDLs; criteria

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793958417

Publication date: January 1, 2009

More about this publication?
  • 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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites
wef/wefproc/2009/00002009/00000006/art00045
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more