PDC 603

What’s New in Vapor Intrusion Investigations

intermediate | Credits: 4 CM Credit Hours / 0.4 CEU
Sunday, May 22 | 1:00 PM – 5:00 PM
Limit: 60


Environmental Issues, Exposure Assessment Strategies, Indoor Environmental Quality


This course is designed to provide industrial hygienists and environmental professionals with a foundation to perform vapor intrusion investigation of buildings with onsite groundwater and soil contamination. Participants will be introduced to the regulatory background requirements of vapor intrusion guidance documents. The course provides an additional tool for indoor air quality evaluations in buildings that have an on- or off-site contamination with the potential to impact the indoor air. Industrial hygiene and environmental professionals will be able to make appropriate recommendations with respect to vapor intrusion investigations as part of Phase I and Phase II environmental assessments.


Familiarity with Indoor Air Quality (IAQ) investigations. Knowledge of environmental regulations including Phase I and Phase II Environmental Site Assessment (ESA) is a plus.

Learning Aids

Participants must bring a laptop OR tablet/iPad.

Value Added

Students will learn the various tools available for conducting vapor intrusion investigations, regulatory requirements, practical knowledge of conducting sampling, and reporting results.


Upon completion, participants will be able to:

  • Recognize the technical and regulatory implications of vapor intrusion and apply it to IAQ and environmental site assessments/site investigations.
  • Establish a foundation for indoor air quality investigations of building with contaminated ground water, soil or vapor issues.
  • Explain the key requirements for conducting sub-slab soil vapor and indoor air sampling and reporting.


  • A review of the U.S. Environmental Protection Agency (EPA) Office Of Solid Waste and Emergency Response (OSWER)’s Technical Guide for Assessing and Mitigation the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air
  • The role of the OSWER guide in vapor intrusion investigations
  • Comparison of the OSWER Guidance with select state guidance documents
  • When and how to use various guidance documents
  • How to use the Vapor Intrusion Screening Level (VISL) calculator tool

Transfer of Knowledge

Instructors will evaluate participants understanding of the materials presented based on:

  • Practice exercises
  • Workshops

Course Survey Link: https://www.surveymonkey.com/r/16PDC603

Sponsoring Committee

Environmental Issues