Skip to main content

How Can Site Specific Objectives (SSOs) Aid in TMDL Compliance?

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Southern California continues to face a multitude of water quality problems. Along with bacteria and trash, ammonia and metals constitute major water quality problem faced by the highly urbanized coast of California. The State has taken steps to address these problems through the development of Metals and Nutrient Total Maximum Daily Loads (TMDLs). Metals TMDLs have been adopted for multiple waterbodies in the region including the Los Angeles River, San Gabriel River, and the Calleguas Creek watershed. TMDLs addressing toxicity related to ammonia have been adopted for the Los Angeles River, San Gabriel River, Santa Clara River, and the Calleguas Creek watershed. These TMDLs outline a path for compliance with numeric targets for the various constituents. However, those numeric targets are based on national water quality criteria that do not necessarily reflect site-specific conditions. In 1994, the USEPA published detailed protocols for adjusting its national metals water quality criteria to reflect site-specific conditions using the “Water-Effect Ratio” (WER) method. The following details how the WER method was used for both copper and ammonia to develop site-specific criteria, which have aided in achieving TMDL compliance.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Implementation; Site-Specific Objective; TMDL; Water-Effect Ratio

Document Type: Research Article

Publication date: 01 January 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 These proceedings are not peer reviewed.

    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
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