Superfund Site: ARGONAUT MINE

Superfund Site Profile

The Argonaut Mine Site has been proposed for inclusion on the National Priorities List (NPL) by a rulemaking in the Federal Register. Placing the site on the NPL will make it eligible for addional federal funds that will enable a long-term cleanup at the site.

A 60-day public comment period is ongoing until June 7, 2016. To submit a public comment, visit and search using the site's docket number: EPA-HQ-OLEM-2016-0151

For information on all of EPA's proposed and final NPL sites click here.


The Argonaut Mine Site (site) is an historic hard rock gold mine that operated from the 1850s to 1942. The Argonaut Mining Company processed ore and disposed of tailings throughout the northwest side of present-day Jackson, CA. As a result of years of mining operations, the site's soil contains high levels of arsenic, lead and mercury. EPA has been working at the site since 2013 to sample, understand, and address the contamination.