This training site builds upon the information presented in three ITRC Guidance Documents: Light Non-Aqueous Phase Liquid (LNAPL), Petroleum Vapor Intrusion (PVI), and Total Petroleum Hydrocarbon (TPH) Risk Evaluation.

The ITRC TPH Risk Evaluation at Petroleum-Contaminated Sites guidance builds on long-standing and current research, and presents the current science for evaluating TPH risk at petroleum-contaminated sites.