The Risk Assessment Information System

RAIS Chemical PRG Calculator

Do you have a previously saved file?
(dated 2023-09-03 or newer)
File Number:
Do you want to use the same chemicals and chemical info type?
Save feature information click here.
Save Info
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  • To save a file for longer, revisit the page and resave your work
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  • Remember to always keep a reference of your file number

Using the PRG Calculator

Target Risk

Target Hazard Quotient

Select Scenario

*Indoor worker includes industrial tap water

Select Media

Select Media

Select Media

Select Media

Select Media

Select Media

Select Media

Select Media

Select PRG type

Select Chemicals Data Source

Select RfD/RfC Type

*Chronic selection will retrieve Chronic-only RfDs/RfCs; Subchronic selection will first retrieve subchronic values where possible and then use chronic values.

Select Chemicals of Interest



ⓘ To calculate for a chemical not listed, choose "Site Specific" and "User-Provided" above
and then select "Test chemical" in the Chemicals list.

Or Select All

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