An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Risk Assessment

Guidance for Data Useability in Risk Assessment (Part A-12), Final, April, 1992

Appendix V lists the parameters and criteria that produce a "J" flag in accordance with the National Functional Guidelines for Organic Data Review (EPA 1991e) and Laboratory Data Validation Functional Guidelines for Inorganics Analyses (EPA 1988e)

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