Vapor intrusion risk addressed in new ASTM guide update

The updates address industry confusion over how to handle the issue.

September 08, 2016 |

Photo: Ali K., Wikimedia Creative Commons

ASTM recently released updates to the E2600-15: Standard Guide for Vapor Encroachment Screening on Property Involved in Real Estate Transactions, a document that aims to improve guidance on how vapor intrusion risk should be assessed.

The topic of vapor intrusion and how it impacts occupant health, business operations, cash flow and property values is fairly widely considered in the commercial real estate industry. Exactly how to address this risk in the due diligence process, however, is not always well understood.

Intrusion of vapors from certain chemicals and substances harm the health of occupants, especially infants, immune-compromised individuals, and the elderly. Building owners, particularly multi-family residential owners that don’t address this issue, expose themselves to serious legal liability.

The collection of samples and interpretation of data during assessments can be performed inconsistently. The update to the ASTM guide attempts to provide a more uniform method for vapor intrusion assessments.

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