Skip to main content

Assessing the Nutrient Trading Ratio and Influencing Factors from the TMDL Allocation Process

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

An innovative approach for TMDL allocation and implementation is watershed-based pollutant trading. As one of the most important technical challenges in establishing pollutant trading program, setting of ratios can be a contentious issue and was already listed as an obstacle by several pollutant trading programs. In general, industries would like to see the ratios set as low as possible to lower the cost of complying with environmental regulation, while environmental groups would like to see the ratios set as high as possible to ensure that trading programs will result in improvements to water quality. However, most of these available studies did not provide an approach to explicitly address the determination of trading ratio. The objectives of this paper are to introduce a practical methodology in determining trading ratio from TMDL allocation matrix of feasible scenarios. By examining different “equivalent trading ratios (ETRs)”, which generally correlate non-linearly with selected pairs of allocation scenarios, the discussion focuses on primary factors influencing the estimation of trading ratio and their potential impacts on TMDL implementation. Case study is based on EPA-approved Nitrate TMDL Development for Muddy Creek, Virginia. The results show that with the increase of relative percentage of nonpoint source load reduction in the total load reduction, the ETR also increases. By further incorporating economic consideration (e.g. marginal treatment cost), this practical methodology will help enhance scientific basis of trading ratio estimation and thus public perception in TMDL-based pollutant trading program.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2003-01-01

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 These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
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