VEC App- Vapor Encroachment Assessment Tool

Vapor Intrusion emerged as a significant issue in the environmental risk assessment and property due diligence industry in the mid 2000s. The first standard to assess for vapor intrusion risk was released by ASTM in 2008. It was subsequently revised to reflect the encroachment of contaminated vapors onto a property, rather than the intrusion of vapors into a structure in 2010. A task group linked this standard to the revised ASTM E1527-13 Phase I ESA Standard, clarifying that the Phase I standard does not exclude contamination caused by hazardous vapors. EPA has subsequently updated it’s All Appropriate Inquiries rule, naming ASTM E1527-13 as a method for compliance with the rule’s ten performance standards.

A few years later, the standard underwent additional revisions and in December of  2015, ASTM published E 2600-15, Standard Guide for Vapor Encroachment Screening on Property Involved in Real Estate Transactions.

Today, over of 90% of environmental professionals consider a screen for vapor issues part of the Phase I ESA. Utilizing ASTM E2600-15 is the preferred methodology for conducting this screen, and EDR’s VEC App is the industry’s only Vapor Encroachment Assessment Tool.



EDR’s VEC App is an intuitive data analysis interface that allows environmental professionals to quickly and easily screen their target properties for vapor encroachment risk.

Accessed through EDR Lightbox, VEC App provides the tools and content needed to make VEC determinations and comply with ASTM E2600 and E1527.

In EDR VEC App you can:

  • Set your Area of Concern following ASTM E2600
  • Capture sites that are VECs
  • Use the Wizard to help you
  • Output a report showing your work

See the VEC App in action in a recent webinar.

Access the VEC App Guide >