EPA Guidance
Current EPA VI Guidance
OSWER Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (Subsurface Vapor Intrusion Guidance)EPA issues a draft guidance that provides current technical and policy recommendations on determining if the vapor intrusion pathway poses an unacceptable risk to human health at cleanup sites.
- Federal Register Notice - November 29, 2002
- Fact Sheet: Evaluating the Vapor Intrusion into Indoor Air (PDF, 2 pp., 17 KB)
- Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (Subsurface Vapor Intrusion Guidance) (Complete Document) (PDF, 178 pp., 1.9 MB)
- Draft Guidance (PDF, 53 pp., 516 KB)
- Tables (PDF, 37 pp., 275K)
- Appendices A-C (PDF, 22 pp., 505 KB)
- Appendices D-F (PDF, 44 pp., 562 KB)
- Appendices G-I (PDF, 27 pp., 481 KB)
EPA Technical Documents
DRAFT U.S. EPA’s Vapor Intrusion Database: Preliminary Evaluation of Attenuation Factors (PDF, 115 pp., 1.1 MB) March 2008.
Engineering Issue: Indoor Air Vapor Intrusion Mitigation Approaches (PDF, 49 pp., 808 KB) (EPA/600/R-08/115) October 2008
