We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

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page title goes here Risk Assessment

A new Peak PRG output option has been added. Please see the What's New page for details.

PRG Equations

This page is provided to give users quick access to PRG equations without searching through the extensive user's guide.

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Resident

Composite Worker

Outdoor Worker

Indoor Worker

Construction Worker

Recreator

Farmer

Soil to Groundwater

Supporting Equations