EPA Issues Updated Draft General Vapor Intrusion Policy; Agency Also Issues Draft Petroleum Vapor Intrusion Guidance

Client Advisory
June 7, 2013

In April 2013, the Environmental Protection Agency published for comment two draft vapor intrusion guidance documents: (1) a revised update addressing general vapor intrusion and (2) a new document addressing vapor intrusion from petroleum hydrocarbons. The agency has recently extended the public comment period until June 24, 2013. 

Vapor intrusion is often defined as the migration of vapors emitted from volatile chemicals present in contaminated groundwater or soil into overlying buildings. These two guidance documents may significantly alter the contamination assessment and mitigation landscape. Therefore, entities that may be impacted by the new guidance should consider filing comments. In addition, before engaging in any activities at a site where vapor intrusion may be an issue, consideration should be given to consulting with experienced environmental practitioners to better understand the potential liabilities and ways to mitigate any risks. If you have questions, require assistance in developing vapor intrusion management strategies, or want to discuss submitting public comments to EPA, please contact any of the attorneys or consultants listed on this advisory.

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