Skip to main content

CONTRIBUTIONS OF TRACE METALS VIA ATMOSPHERIC DEPOSITION TO SANTA MONICA BAY AND THE SANTA MONICA BAY WATERSHED

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

Atmospheric deposition is a largely unmonitored, but potentially large source of pollutants to aquatic ecosystems and their surrounding watersheds. The goal of this study was to estimate the deposition of trace metals to Santa Monica Bay and compare this load to the load of other sources for trace metals. Trace metal loads from atmospheric deposition were estimated using a combination of aerosol sampling, wet deposition sampling, and atmospheric transport and fate modeling. Aerosol sampling using a cascade impactor was conducted at 12 locations throughout the airshed every six days for approximately one year. Wet deposition was measured during every storm event that season. The atmospheric fate and transport model was calibrated and validated over the time span of our study using an extensive source emissions data set for the Los Angeles airshed. The annual atmospheric deposition of chromium, copper, lead, nickel and zinc exceeded the estimated annual effluent loads from industrial and power generating stations to Santa Monica Bay. Atmospheric deposition rivaled and, at times, exceeded the trace metal loads from municipal wastewaters to the Bay. In the Santa Monica Bay region, the majority of the atmospheric deposition loading occurred during dry weather, which was a factor of two to five times greater than wet deposition loading. Interestingly, estimates of annual stormwater emissions from the Santa Monica Bay watershed were similar to the estimated annual indirect dry deposition loading to the watershed.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864703784829092

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 These proceedings are not peer reviewed.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
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