In This Issue:
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Jury returns verdict on Redfield Class Action |
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AEHS Vapor Intrusion Workshop |
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Massachusetts DEP Presentation on Revisions to MCP GW-2
Groundwater Standards |
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Wisconsin Vapor Intrusion Fact Sheet |
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California Draft Schools Risk Screening Guidance |
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California DTSC Developing Vapor Intrusion Guidance |
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Louisiana Issues Remediation Guidance |
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AWMA Conference Will Include Vapor Intrusion Session |
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Featured Links:
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Jury returns verdict on Redfield Class Action
A Colorado State Court jury in Denver found Brown Group
Retail, Inc. partially responsible for alleged environmental
impacts on a neighborhood near the former Redfield Site,
entering a verdict against Brown of $1,007,000 for
non-economic damages. The jury did not award any punitive
damages or damages for loss of property values. The
plaintiffs had sought more than $380 million, including
punitive damages.
The Redfield Site, one of the largest vapor intrusion sites
in the country, is also one of the original vapor intrusion
sites that led to the current EPA focus on this pathway.
EnviroGroup has been the principal consultant for Brown
Group since the off-site plume was discovered in 1998. More
information on the site and the lawsuit (under New
Information) can be found at the following link:
AEHS Vapor Intrusion Workshop
The AEHS is holding an EPA-sponsored workshop on "A Study of
Observed Vapor Intrusion Attenuation" at its 14th Annual
West Coast Conference on Soils, Sediments and Water in San
Diego, March 14-18, 2004. EPA is inviting abstracts for
presentations on observed attenuation factors between
groundwater and indoor air, and soil vapor and indoor air,
as wells as papers on investigation techniques and
approaches for dealing with background concentrations from
other sources. More information on abstract submittal and
the workshop can be found at the following link.
Massachusetts DEP Presentation on Revisions to MCP GW-2
Groundwater Standards
A presentation on "Modeling the Vapor Intrusion Pathway:
Revisions to the MCP GW-2 Groundwater Standards" can be
found on the Massachusetts Department of Environmental
Protection (DEP) website, providing a comprehensive summary
of how DEP is addressing vapor intrusion, including a
comparison to the EPA vapor intrusion guidance and other
state standards, as well as a discussion of the Johnson
Ettinger model and some of the recent controversy regarding
its use. Click below to view or download the presentation.
Wisconsin Vapor Intrusion Fact Sheet
The Wisconsin Division of Public Health of the Department of
Health and Family Services has developed a two page vapor
intrusion fact sheet intended for the general public. It can
be found at:
California Draft Schools Risk Screening Guidance
In October the Office of Health Hazard Evaluation of the
California Environmental Protection Agency released the
draft document: "Guidance for Assessing Exposures and Health
Risks at Existing and Proposed School Sites". When finalized
it is intended to be used by the Department of Toxic
Substances Control and other state and local agencies to
assess exposures and health risks at existing and proposed
school sites, including evaluation of the vapor intrusion
pathway. The guidance can be found at:
California DTSC Developing Vapor Intrusion Guidance
In presentations made at the recent GRA Symposium on Vapor
Intrusion (see September edition of VI newsletter at
www.envirogroup.com), DTSC is developing California specific
vapor intrusion guidance and is targeting January 2004 for
its release. The guidance will reportedly recommend a tiered
process, beginning with groundwater and soil gas
measurements, including the use of the Johnson Ettinger
model, culminating with indoor air measurements if
necessary. The evaluation involves both current and future
land use and risk. The approach proposed emphasizes site
specific evaluation; screening values for soil gas and
ground water will not be included. Vapor Intrusion News will
announce the guidance when made available by DTSC.
Louisiana Issues Remediation Guidance
The Remediation Services Division of the Louisiana
Department of Environmental Quality has issued its Risk
Evaluation/Corrective Action Program (RECAP) guidance
document and regulation. The regulation became final October
20, 2003 and it includes minimum remediation standards for
present and past uncontrolled constituent releases. The
guidance document includes direction on indoor air sampling
and details of how to evaluate volatile emissions from both
soil and ground water to enclosed structures. The guidance
document can be found at:
AWMA Conference Will Include Vapor Intrusion Session
The Air and Waste Management Association will include a
session on "Advances in Indoor Air Vapor Intrusion: Guidance
and Application" at it Annual Conference and Exhibition to
be held June 22-25, 2004 in Indianapolis, Indiana. For more
information on the conference, click on the link below.
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