Analyses in support of the development of the pbt monitoring strategy
Download
1 / 8

Analyses in Support of the Development of the PBT Monitoring Strategy - PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on

Analyses in Support of the Development of the PBT Monitoring Strategy. Tim Watkins and Stan Durkee EPA / ORD. Purpose. Currently, we are undertaking analyses addressing mercury, dioxin and PCBs to:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Analyses in Support of the Development of the PBT Monitoring Strategy' - julie


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Analyses in support of the development of the pbt monitoring strategy

Analyses in Support of the Development of the PBT Monitoring Strategy

Tim Watkins and Stan Durkee

EPA / ORD

PBT Monitoring Strategy Workshop


Purpose
Purpose Strategy

  • Currently, we are undertaking analyses addressing mercury, dioxin and PCBs to:

    • Enhance our understanding of current monitoring programs addressing various media and the extent to which partnerships and information-sharing exist;

    • Assess these PBT monitoring programs against our draft Strategy objectives; and,

    • Provide insight and information to help refine our draft Strategy objectives.

PBT Monitoring Strategy Workshop


Specific analyses
Specific Analyses Strategy

  • Assessment of current monitoring programs.

  • Evaluation of Hg monitoring sites in one network using modeled Hg deposition values.

  • Investigation of EPA fish tissue study design.

  • Dioxin modeling exercise.

PBT Monitoring Strategy Workshop


A multimedia matrix for monitoring selected pbts an analytical tool
A Multimedia Matrix for Monitoring Selected PBTs (An Analytical Tool)

PBT Monitoring Strategy Workshop


Initial focus on mercury
Initial Focus on Mercury Analytical Tool)

  • A lot of interest and activity

  • Data availability

  • Major monitoring programs in all media

PBT Monitoring Strategy Workshop


Mercury monitoring
Mercury Monitoring Analytical Tool)

  • Can national strategy objectives be developed for individual media?

  • Can national strategy objectives be developed to link multimedia monitoring systems?

  • To help answer these questions, we are first examining the mercury deposition network (MDN).

PBT Monitoring Strategy Workshop


Mercury deposition network
Mercury Deposition Network Analytical Tool)

  • A collaborative network sponsored by over 100 state and federal agencies, native American tribes and others.

  • In 2000, more than 50 sites in operation.

  • Collects weekly wet-only samples of precipitation at sites worldwide, analyzing total mercury (also methylmercury at 1/3 of the sites).

PBT Monitoring Strategy Workshop


Modeling can support monitoring design
Modeling Can Support Monitoring Design Analytical Tool)

  • EPA modeled, using RELMAP, the domestic long range transport of U.S. emissions and reported the results in the 1997 Mercury Study Report to Congress.

  • For this analysis, we have evaluated MDN monitoring sites against our Strategy objectives using the modeled results of Hg wet deposition.

  • A detailed description follows this presentation.

PBT Monitoring Strategy Workshop