APH VI Calculator

The Air-Phase Petroleum Hydrocarbon Vapor Intrusion (APH VI) Screening Level Calculator is designed as a simple screening tool to determine if vapor intrusion exceeds generic risked-based screening levels at sites with only petroleum contamination. This calculator is not meant to be used with solvent sites or mixed waste sites containing a combination of petroleum and other sources. The results from this calculator should be considered one of the multiple lines of evidence in your vapor intrusion investigation.

Below you will find the APH VI Screening Level Calculator as well as the VI APH Calculator Discussion that explains how to use the calculator and the general assumptions used for site-specific vapor intrusion risk assessment/analysis (also found on DEQ SRS’s FAQs website).

APH VI Calculator
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NewAPH VI Calculator Discussion
NewAPH VI Calculator