The U.S. Environmental Protection Agency (EPA) Regional Screening Level (RSL) Calculator and the Vapor Intrusion Screening Level (VISL) Calculator webpages are once again available on the U.S. EPA’s webpage.  

The Wisconsin Department of Natural Resources (DNR) uses these calculators to establish soil residual contaminant levels (RCLs) that may be used by responsible parties to meet cleanup standards in Wis. Admin. Code ch. NR 720 and to establish indoor air Vapor Action Levels (VALs) and Vapor Risk Screening Levels (VSRLs), consistent with relevant definitions set forth in Wis. Admin. Code ch. NR 700.  

Please contact Erin Endsley with any questions about soil RCLs or Jennifer Borski with any questions about vapor levels.