The potential for human exposures resulting from subsurface vapor intrusion to indoor air is a topic of significant concern and debate. This one-day symposium will provide attendees with an overview of the issues, along with a summary of the state of the science and practice in California. The workshop will also familiarize attendees with recent and emerging regulatory guidance, along with various tools and strategies that can be employed to evaluate site-specific exposures, where site-specific evaluations are warranted. The course will give an overview of predictive models, but will focus on the Johnson and Ettinger Model.

Who should attend: The symposium is intended for regulatory agency personnel, consultants, responsible parties, property owners and developers interested in the latest strategies for understanding and addressing this exposure pathway.

Topics will include:

• Overview of the indoor air issue from the California perspective
• Case Study: a facility in Mountain View, CA
• Basis for predictive models
• Collection of field data: groundwater, soil, soil gas and physical parameters
• Background air quality and its impact on the assessment of vapor intrusion
• Engineering controls
• Hypothetical site characterization/risk assessment/remediation approach to a site
• Panel discussion

Speakers will include:

• David Berry, Department of Toxic Substances Control
• Roger Brewer, San Francisco Bay Regional Water Quality Control Board
• Robert Ettinger, Shell Oil Products US
• Dan Gallagher, Department of Toxic Substances Control
• Paul Johnson, Arizona State University
• Todd McAlary, GeoSyntec
• Ronald Mosley, US Environmental Protection Agency, Office of Research and Development
• Eric Nichols, LFR Levine-Fricke
• John Moody, US Environmental Protection Agency, Region 9
  

Registration Fees:

GRA Members, Government Agency Employees and Cooperating Agency Employees - $175 per person; Non-GRA members - $220 per person; Registration plus GRA membership - $240 per person; Students - $80 per person. Register for this event.

Exhibit Space and Sponsorship Opportunities:

Please contact Mary Megarry, 916/446-3626 or email at mmegarry@nossaman.com, to reserve your space or click here to print the forms to register as an exhibitor and/or sponsor.

Hotel Information:

Please specify that you are attending the GRA symposium for the special hotel rate of $119.

For September 30 Symposium:	For October 1 Symposium:
The Hyatt San Jose 1740 North First Street San Jose, California 95112 Phone: (408) 993-1234	The Westin Long Beach 333 East Ocean Blvd. Long Beach, California 90802 Phone: (562) 436-3000

Dr. Roger Brewer is the principal author of the San Francisco Bay Regional Water Quality Control Board's (RWQCB's) July 2003 Technical Document on Environmental Screening Levels (ESLs). This document is an update to RWQCB's December 2001 Risk Based Screening Levels (RBSLs). Dr. Brewer will present an overview of the scope and intent of the ESLs and summarize key updates and changes in the July 2003 update. Most notably, the update contains new ESLs for indoor air and shallow soil gas that were developed to address potential vapor intrusion. Dr. Brewer will describe how the indoor air and soil gas ESLs were developed and how they are intended to be used. He also will discuss limitations of the ESLs.

This month's dinner will be held at the Biltmore Hotel, 2151 Laurelwood Road, Santa Clara, California 95054. Tel: 408.988.8411.

Directions: From 101 North exit at Montague Expressway/San Tomas Expressway, make right at Laurelwood, hotel is on the left. From 101 South, exit at Montague Expressway/San Tomas Expressway, go over 101, right on Laurelwood, hotel is on the left. Park in the hotel parking lot. A map, driving directions from your location, and more info can be found at: http://www.hotelbiltmore.com .

Click here for more information about the San Francisco Branch Dinner Meeting.