Vapor Intrusion Site Assessment Although contaminated ground water is frequently a contributing factor there are a variety of sources that can result vapor intrusion. Our field investigation expertise enables us to evaluate complex sites using a sampling matrix that evaluates indoor air, soil gas and ground water. In some cases the source of contamination may be chemicals located above ground at neighboring properties and not the ground water at all. Accurately assessing the source and pathways can avoiding unnecessary testing and clarify a course of action. 3 Maple Street Andover, NJ 07821 Site Built By LRX Systems, Inc.