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Vapor Intrusion

VISL What's New

 

The What's New section keeps users informed of changes to: toxicity values, exposure parameters, chemical-specific parameters, equation formats, and any other changes to the VISL calculator. Please check this site frequently to be advised of any recent changes.

November 19, 2018

The toxicity values and physiochemical parameters have been updated. To see what updates have occurred, check the RSL What's New page.

May 15, 2018

The toxicity values and physiochemical parameters have been updated. To see what updates have occurred, check the RSL What's New page.

February 2018

The Vapor Intrusion Screening Level (VISL) calculator is now available as an online calculator, replacing previous versions in MS-Excel workbooks. The VISL now uses the same database as the Regional Screening Levels (RSLs) for toxicity values and physiochemical parameters and will be automatically updated during the semi-annual RSL updates.