Volatile Times in Vapor Intrusion Regulation: A Legal and Technical Update
Vapor Intrusion: New Rules by the EPA
As regulation of vapor intrusion continues to evolve and escalate costs at contaminated sites, due diligence practices for vapor intrusion must also continue to evolve. Potential purchasers should consider supplementing a...more
On February 23, 2023, California EPA (Cal EPA) finally released a “final draft” version of the much-awaited vapor intrusion guidance, Final Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion (VI Guidance)...more
Last month, the California Department of Toxic Substances Control (“DTSC”) issued its long-awaited “Vapor Intrusion Update” (“Advisory”) which is intended to guide the selection of attenuation factors (“AFs”) at contaminated...more
As concerns have escalated about vapor intrusion, regulatory agencies are not only taking more conservative approaches to risk – they may also be more likely to take enforcement action where there is delay or non-compliance...more
By Catherine W. Johnson In February 2020, California EPA (Cal-EPA) released its Draft Supplemental Vapor Intrusion Guidance (“Draft Guidance”) – designed to promote consistency in the investigation of vapor intrusion among...more
Technical consultants Elie Haddad and Jennifer Boyer (Haley & Aldrich, Inc. - San Jose, CA) team up with environmental attorneys Brian Moskal and Sherry Jackman (Greenberg Glusker LLP - Los Angeles, CA) to discuss and explore...more
In February, the California Department of Toxic Substances Control, or DTSC, the State Water Resources Control Board, or SWRCB, and the San Francisco Bay Regional Water Quality Control Board released a much-anticipated draft...more
After years in the making behind closed doors, on February 14, 2020, the California Department of Toxic Substances Control (DTSC), the San Francisco Bay Regional Water Quality Control Board and the California State Water...more
Public comments on California’s Draft Supplemental Vapor Intrusion Guidance (“DSVIG”) were due to Cal-EPA by June 1, 2020. So far, comments submitted indicate several California businesses and industries are concerned about...more
An increasing degree of attention is being paid to instances of vapor intrusion, the process by which volatile chemicals migrate, in vapor form, from soil or groundwater into indoor air spaces of buildings. Even in the era of...more
The Michigan Department of Environmental Quality (MDEQ) recently announced that it will be evaluating the vapor intrusion (VI) pathway at 4,000 sites, including as many as 375 Resource Conservation and Recovery Act (RCRA)...more
Addressing a hot topic, the Maine Department of Environmental Protection (DEP) just issued “Supplemental Guidance for Vapor Intrusion (VI) of Chlorinated Solvents and other Persistent Chemicals” superseding guidance issued in...more
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