Go to Seminar

Links to Additional Resources

CLU-IN Studio
United States Environmental Protection Agency
A Systematic Approach for Evaluation of Capture Zones at Pump and Treat Systems
Sponsored by: U.S. EPA Technology Innovation Program
Original Time/Date of Presentation:

November 13, 2008, 2:00 PM - 4:00 PM, EST (19:00-21:00 GMT)

You may also be interested in the following archive of this seminar:

Presentation Overview:

A Systematic Approach for Evaluation of Capture Zones at Pump and Treat Systems presents a systematic approach for the evaluation of capture zones at pump and treat systems, and provides an overview of a recently published USEPA document on the topic (EPA 600/R-08/003, January 2008). The target audience for the course is project managers who review those analyses and/or make decisions based on these types of analyses. This course will highlight:

  • The importance of capture zone analysis during ground water remediation, particularly for sites requiring containment
  • Key concepts of capture, such as "target capture zones" and "converging lines of evidence"
  • Typical errors made in capture zone analysis
In addition, steps associated with a systematic approach for capture zone analysis will be discussed. These steps include the following:
  • Step 1: Review site data, site conceptual model, and remedy objectives
  • Step 2: Define site-specific Target Capture Zone(s)
  • Step 3: Interpret water levels
    • Potentiometric surface maps (horizontal) and water level difference maps (vertical)
    • Water level pairs (gradient control points)
  • Step 4: Perform calculations (as appropriate based on site complexity)
    • Estimated flow rate calculation
    • Capture zone width calculation
    • Modeling (analytical and/or numerical) to simulate water levels, in conjunction with particle tracking and/or transport modeling
  • Step 5: Evaluate concentration trends
  • Step 6: Interpret actual capture based on steps 1-5, compare to Target Capture Zone(s), and assess uncertainties and data gaps

Examples will be used to demonstrate key aspects of capture zone analysis.

Go to Seminar

Press the "Go to Seminar" button to view the seminar. Please be at this location at the beginning of the conference call.

Download Seminar For Future Reference

An archive of this seminar is available for download in Microsoft PowerPoint Format, Adobe Acrobat, and MP3 formats.
These links open in a pop-up window. You may need to turn off any pop-up blockers or add * to your list of allowed sites for pop-ups.

After the seminar is complete, please view:
Links to Additional Resources

Produced by the U.S. EPA, Technology Innovation and Field Services Division
Questions about our Internet Seminars? | Technical problems?
Rehabilitation Act Notice for Reasonable Accommodation, Webinar Recording, and Content Disclaimer

Technology Innovation Program U.S. Environmental Protection Agency