This toolkit replaces, combines, and updates three previous ITRC vapor intrusion documents to create a scientifically based, consensus approach to explain concepts and best practices regarding vapor intrusion.

A training site with interactive workshops and tools to help users apply petroleum guidance to build site models, assess risk, and manage sites.

Designed to aid state regulators in understanding various mitigation strategies, how they are installed and fundamentally work, and what factors to consider as part of the review process.

This guidance document provides an eight-step process for the effective assessment and management of vapor intrusion at sites contaminated with petroleum hydrocarbons.

Provides a generalized framework for evaluating the vapor intrusion pathway and describes the various tools available for investigation, data evaluation, and mitigation.

An overview of vapor intrusion, contaminant types with vapor intrusion potential, brownfield sites’ potential to have indoor air exposure from vapor intrusion, and steps that can be taken to limit exposures.