Skip to main content

NET ECOLOGICAL BENEFIT ASSOCIATED WITH THE CREATION OF AN EFFLUENT DEPENDENT AQUATIC ECOSYSTEM IN SOUTHERN CALIFORIA

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

The California Lahontan Regional Water Quality Control Board (LRWQCB) (Region 6) plans to establish site-specific beneficial uses for surface waters receiving discharge from the Lancaster, California County Sanitation District No. 14 Water Reclamation Plant (WRP). The discharge creates a significant effluent-dependent ecosystem in normally dry ephemeral waterbodies in an arid region. In preparation for LRWQCB action, the County Sanitation Districts of Los Angeles County completed a study to identify existing and reasonably attainable beneficial uses in Amargosa Creek, Paiute Ponds and Rosamond Dry Lake, and evaluate if there is a net ecological benefit associated with the created effluent-dependent ecosystem.

To support project goals, an analysis was conducted using the ecological benefits comparison principles established by the U.S. Environmental Protection Agency (EPA) Region 9 (EPA 1992, 1993). This approach evaluates the benefits and detriments associated with effluent-created habitats and provides an objective means to evaluate whether the created habitat provides a net ecological benefit to a local region. Findings from this analysis have been used to support the establishment of site-specific water quality objectives for ammonia and may be used to support establishment of other site specific water quality objectives in the future.

Eight ecological concerns were identified as potential benefits or detriments associated with the created Paiute Ponds ecosystem. Examples of potential benefits included use of the ponds as aquatic habitat by threatened and endangered species and use of the ponds as an outdoor environmental classroom for students. Examples of potential detriments included impacts from effluent on local groundwater and downstream waters. An objective analysis of each concern was conducted using available physical, chemical and biological data from the study area. The results of the ecological benefits comparison indicate that a net ecological benefit exists as a result of the discharge of treated effluent. In addition, the study identified three existing and/or reasonably attainable beneficial uses in the three evaluated waterbodies: Warmwater freshwater habitat (WARM), wildlife habitat (WILD), and non-contact water recreation (REC-2).
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: 2004-01-01

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
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