An official website of the United States government.

We've made some changes to 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.

Radiation Protection

User's Guide for the COMPLY-R Code: Revision 1

The COMPLY-R computer program may be used to demonstrate compliance with the National Emission Standards for Hazardous Air Pollutants (NESHAPS) in 40 CFR 61, Subpart B. The program can be used by owner or operators of underground uranium mines to determine the dose to the maximally exposed individual from Radon-222 emissions.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.