Updated publication RR-0136, Guidance: Wisconsin Vapor Quick Look-Up Table, is now posted and available online.

The document can be found on the Vapor Intrusion for Environmental Professionals webpage. Additional documents and guidance from the Remediation and Redevelopment Program may be found using the search tools available on the publications and forms webpage.

The document lists select volatile organic compounds frequently encountered at remediation sites; it is updated periodically based on updates to inhalation toxicity data. Consultants should compare vapor data for open sites to the updated table for potential additional actions and should routinely reference the webpage for the most recent version.

The basis for the U.S. EPA Regional Screening Levels were updated in May 2022; the update does not include revisions to action or screening levels.

Consultants should compare vapor data for chemicals not available on Wisconsin’s Vapor Quick Look-Up Table directly to the U.S. EPA’s Vapor Intrusion Screening Level Calculator; instructions are included on Wisconsin’s Vapor Quick Look-Up Table.

Site-specific questions regarding vapor intrusion in Wisconsin should be directed to the assigned DNR project manager. General questions can be directed to the contacts listed on the DNR’s Vapor Intrusion Resources for Environmental Professionals webpage.