March 6, 2018
An EPA official inspects the Chaparral Gulch Dam during the investigation. (EPA/Courtesy)
Stories this photo appears in:
EPA getting close to cleanup options on Superfund site
Update includes some possibilities for tailings, smelter
The more urgent remediation from the effects of historical mining in Humboldt was the cleanup of residential yards that contained high levels of arsenic and lead.
By Sue Tone
March 7, 2018