Vapor Intrusion

News & Analysis as of

MassDEP Releases Its Draft Vapor Intrusion Guidance

MassDEP has recently released for public comment draft Guidance on Vapor Intrusion. The proposed guidance would replace MassDEP’s December 2011 Interim Final Vapor Intrusion Guidance, which saw minor revisions in the spring...more

EPA's Concern Over TCE Vapor Intrusion Is Misguided

On July 9, 2014, the Director of the U.S. Environmental Protection Agency's Superfund Division in Region 9 issued a memo to staff setting an “operational framework” to address “inhalation exposures [to trichloroethylene] in...more

New Standard for Environmental Assessments Gaining Traction

The American Society for Testing and Materials ("ASTM") standard for Environmental Assessments was revised in 2013 for the first time since 2005. The Department of Housing and Urban Development has now adopted the updated...more

Updated Phase I Environmental Site Assessment Standard Approved - Key to Sound Due Diligence

A new Phase I environmental site assessment standard has been approved for use in 2014, providing the most current set of environmental site assessment practices for real estate and many M & A transactions. The new Phase I...more

AAI Rules Amended Under CERCLA – Focus on Vapor and Records Review

Effective December 30, 2013, the EPA acted to amend the standards and practices for conducting all appropriate inquiries (“AAI”) to embrace an update to ASTM International standards, and to expressly bring vapor issues to the...more

Vapor Intrusion Risk Insufficient to Trigger EIR for Urban Infill Project

In Parker Shattuck Neighbors, et al. v. Berkeley City Council, et. al. (First Appellate District, December 30, 2013) (“Shattuck Neighbors”), the court upheld the City of Berkeley’s approval of a mitigated negative declaration...more

Expert Testimony Recommending Vapor Intrusion Study is Insufficient Evidence of Health Effects, Does Not Trigger Need for EIR

After the Berkeley City Council (“City”) approved a mixed-use commercial and residential project on the site of a former car dealership and service garage, a community group sued, claiming that pre-existing contamination on...more

Be Careful What You Look For: EPA Updates “All Appropriate Inquiries” Environmental Diligence Standard

On December 30, 2013, the U.S. Environmental Protection Agency (“EPA”) amended its “All Appropriate Inquiries” rule, which sets out the standard for environmental due diligence in commercial and industrial property...more

EPA Recognizes New Standard for Phase I Environmental Site Assessments in Real Estate Transactions

Effective December 30, 2013, the Environmental Protection Agency (EPA) has amended its regulations for site assessments in real estate transactions to add a new standard, ASTM E1527-13, as satisfying the agency’s requirements...more

EPA Issues Rule Approving New ASTM E1527-13 Standard For All Appropriate Inquiries

On December 30, 2013, the U.S. Environmental Protection Agency (EPA) issued its final rule approving the use of ASTM International’s revised “Standard Practice for Environmental Site Assessments: Phase I Environmental Site...more

Vapor Intrusion “Guidance” – What Now?

"The Fog comes in on little cat feet," according to Carl Sandburg, but the U.S. Environmental Protection Agency tells us that vapors come in through cracks in basements, utility lines, and the like — considerably less poetic...more

CERCLA, RCRA, and Vapor Intrusion: Does What Happens in Vegas Really Stay in Vegas?

In Voggenthaler v. Maryland Square LLC, 724 F.3d 1050 (9th Cir. 2013), the defendants argued that contamination that happened in Vegas, stayed in Vegas, and therefore the Commerce Clause barred the application of CERCLA. The...more

Did EPA Overstep in Applying Soil Vapor Intrusion Guidance to Commercial Buildings?

In April 2013, U.S. EPA’s Office of Solid Waste and Emergency Response issued two guidance documents on soil vapor intrusion. One addresses general soil vapor intrusion issues, while the other is specific to petroleum vapor...more

Ninth Circuit Opinion Highlights Vapor Intrusion Risks and Challenges Faced by Brownfields Developers and Their Lenders

A recent ruling by the United States Court of Appeals for the Ninth Circuit illustrates the challenges faced by developers of contaminated properties and their lenders, as well as the extraordinary risks associated with...more

Environmental Due Diligence Standards: Present and Future

The first half of 2013 has experienced greater economic activity than in recent years. The housing market appears to be recovering, albeit slowly. More lending and transactional activity is occurring at the commercial level....more

Illinois Follows Vapor Intrusion Regulation Trend

Most commercial or industrial buyers of contaminated property, and virtually all lenders at contaminated sites, require sellers to either obtain a no-further-remediation letter (NFR) themselves, place money in escrow in an...more

New Indoor Inhalation/Vapor Intrusion Rule Adds New Requirements For NFR Letters In Illinois

Most commercial or industrial buyers of contaminated property, and virtually all lenders at contaminated sites, require sellers to either (a) obtain a No Further Remediation letter (NFR) themselves, (b) place money in escrow...more

EPA Gets the Vapors, Part II

As noted in the post “EPA Gets the Vapors and Commercial Real Estate Feels the Chill,” EPA is now addressing the issue of vapor intrusion – harmful vapors from soil contamination migrating into buildings. The agency is doing...more

EPA Gets the Vapors and Commercial Real Estate Feels the Chill

EPA is worried that you may be a canary. Your realtor may share the worry. It’s not that you recently sprouted feathers or a beak. But just as miners carried caged canaries to warn if air was unsafe, EPA is concerned that...more

Vapor Intrusion Guidance Update

U.S. EPA has extended the deadline for comments on its OSWER Final Guidance for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Sources to Indoor Air and its Guidance for Addressing Petroleum Vapor...more

Vapor Intrusion Developments

Potential buyers and sellers take note — on April 16, 2013, the U.S. Environmental Protection Agency (U.S. EPA) issued draft guidance that would require more evaluation of "vapor intrusion" (migration of any hazardous vapors...more

EPA Issues Long-Awaited Vapor Intrusion Guidance for Public Comment

More than ten years after issuing draft guidance regarding the increasingly significant subject of vapor intrusion (VI), the U.S. Environmental Protection Agency (EPA) has just released for public comment drafts of two...more

Change is in the Air – NJDEP Updates its Vapor Intrusion Guidance

The NJDEP has updated its vapor intrusion screening levels for the first time since 2007. The new screening levels, effective as of January 16, 2013, were developed using risk-based information developed by the USEPA....more

New Jersey Department of Environmental Protection Implements New Guidance on Vapor Intrusion

On January 16, the New Jersey Department of Environmental Protection (NJDEP) published its new guidance on vapor intrusion, including significant changes to the groundwater vapor intrusion screening levels....more

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