If the VEC screen is part of a Phase I, determine if the VEC is a REC.
If the property is located in a state which provides Vapor Intrusion Guidance, the distances included in the guidance may help in REC determination. The REC definition in ASTM E 1527 identifies de minimis conditions that are not RECs. The de minimis definition may also be able to assist in the REC determination, in the case where a VEC is not a REC