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
The North Carolina Department of Environmental Quality (DEQ) has drafted new and revised guidance documents for the assessment and mitigation of vapor intrusion (VI) at properties undergoing reuse and redevelopment (Draft...more
North Carolina Proposes New Guidance for Vapor Intrusion Assessment and Mitigation - The North Carolina Department of Environmental Quality (DEQ) has drafted new and revised guidance documents for the assessment and...more
The California Department of Toxic Substances Control (DTSC), State Water Resources Control Board, and San Francisco Bay Regional Water Quality Control Board (collectively, CalEPA VI Workgroup) published their final draft...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
This presentation will focus on revised vapor intrusion guidelines and the proposed listing USEPA of PFAS (forever chemicals) as a CERCLA hazardous substance....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
CalEPA’s supplemental guidance on vapor intrusion offers instruction but also creates questions. Our Environment, Land Use & Natural Resources Group looks back and looks forward at what the impending changes might mean for...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
Standard due diligence practices may not necessarily identify all the potential liabilities associated with the rapidly evolving field of vapor intrusion. ...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W. Johnson In February 2020, California EPA (Cal-EPA) released its Draft Supplemental Vapor Intrusion Guidance (“Draft Guidance”) – designed to promote consistency in the investigation of vapor intrusion among...more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
While the vast majority of Proposition 65 claims involve consumer products, Proposition 65 also applies to environmental exposures. On July 3, 2020, a Proposition 65 notice of intent to sue was filed against a consulting firm...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
By Laurie Berger (May 28, 2020) In February of this year, three California regulatory agencies released the much-anticipated draft guidance for the investigation of vapor intrusion, “Supplemental Guidance: Screening and...more
California environmental agencies recently issued a draft vapor intrusion guidance document that will significantly impact the investigation and remediation of environmentally impacted properties by owners, operators and...more
On February 14, 2020, the State Water Resources Control Board (SWRCB) and the California Department of Toxic Substances Control (DTSC) issued a public notice regarding the release of Draft Supplemental Guidance: Screening and...more
Guidance Increases Uncertainty for Restoring Brownfields - The long-awaited CalEPA guidance for screening and evaluating vapor intrusion has been issued as a draft for public comment. This state-wide guidance, jointly...more
On October 1, the Washington State Department of Ecology (Ecology) released new guidance with regards to Trichloroethylene (TCE) vapor intrusion....more
The San Francisco Regional Water Quality Control Board recently issued a fact sheet summarizing changes to its approach to remediating environmental impacts and mitigating vapor intrusion (VI) at properties impacted with...more
Introduction - Vapor intrusion has emerged as an important legal, scientific, and policy issue over the last decade. With this issue’s growing importance, it is prudent for persons acquiring, leasing, or developing...more
We have all been involved in investigating and remediating sites with soil and groundwater contamination. But another form of contamination has been recently gaining attention—vapor intrusion....more