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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Grants Mining District

San Mateo Creek Basin Preliminary Assessment

The New Mexico Environment Department Superfund Oversight Section has conducted a Preliminary Site Assessment of the San Mateo Creek basin legacy uranium mine and millsites, which is located in Cibola and McKinley counties, New Mexico.

The objective of this Preliminary Assessment is to evaluate the site using the Hazard Ranking System and the Superfund Chemical Data Matrix to determine if a threat to human health and the environment exists such that further action under CERCLA is warranted.

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