Welcome

Welcome to the Delaware Risk Assessment Calculator (DE RAC) website. This website was developed for the Department of Natural Resources and Environmental Control (DNREC) by The Institute for Environmental Modeling (TIEM) at the University of Tennessee. Here you will find a calculator for cancer risk and noncancer hazard index as well as supporting documentaion in the form of What's New, User's Guide, and Frequent Questions pages.

The models used are primarily based on the United States Environmental Protection Agency (EPA) Regional Screening Levels (RSLs) and the Risk Assessment Information System (RAIS), with exceptions. Exceptions include:

• The DE RAC chemical pick list is specific to DE, and
• Inclusion of a trespasser scenario.

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