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

• February 28, 2011

The webinar will provide interested parties a broad introduction to the March 2009 Unified Guidance. The session will start with the purposes of the guidance and a summary of how it is organized. Speakers will provide a brief discussion on how the guidance might be used for diagnostic evaluation of data assumptions. Next, speakers will expand on a number of key guidance topics:

1. statistical design and hypothesis testing: how to set-up statistical testing to simultaneously identify "dirty" groundwater with sufficiently high probability while minimizing the chance of labeling "clean" groundwater as "dirty";
2. the importance of background data: when might "moving windows" be needed? How should background be updated for intrawell testing? What if background levels are higher than compliance standards?;
3. resampling and retesting: what benefits does retesting provide? How can it be done right?; and
4. intrawell testing: why is spatial variation important? How can it be "fixed"?

At the end of the presentation, time will be left for either phone-in or written questions.

• Kirk Cameron, MacStat Consulting, Ltd (kcmacstat@qwest.net)
• Mike Gansecki, U.S. EPA Region 8 (gansecki.mike@epa.gov)

• Jean Balent, U.S. EPA, Technology Innovation and Field Services Division (balent.jean@epa.gov)

• David Hockey, U.S. EPA, Office of Resource Conservation and Recovery (hockey.david@epa.gov)
• Mike Fitzpatrick , U.S. EPA, Office of Resource Conservation and Recovery (fitzpatrick.mike@epa.gov)
• Matt Straus, U.S. EPA, Office of Solid Waste and Emergency Response (straus.matt@epa.gov)

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