As regulation of vapor intrusion continues to evolve and escalate costs at contaminated sites, due diligence practices for vapor...

by Catherine W. Johnson As concerns have escalated about vapor intrusion, regulatory agencies are not only taking more conservative...

By Catherine W. Johnson In February 2020, California EPA (Cal-EPA) released its Draft Supplemental Vapor Intrusion Guidance (“Draft...

By Catherine W. Johnson Public comments on California’s Draft Supplemental Vapor Intrusion Guidance (“DSVIG”) were due to Cal-EPA by June...

By Catherine Johnson Law360 (March 21, 2019, 4:06 PM EDT) Vapor intrusion — the presence of contaminated vapors inside buildings — can...