Mammoth Stamp Mill Site Closed

The Inyo National Forest has closed the Mammoth Stamp Mill Site due to elevated levels of metals that were determined to pose a risk to human health and the environment. Antimony, arsenic, lead and mercury were identified as the primary chemicals of concern.

Records can be viewed at:
Inyo National Forest
Supervisor's Office
351 Pacu Lane
Bishop CA 93514

Contact: Colleen Garcia

Document Links

Preliminary Assessment/ Site Inspection (PA/SI)11/2016 PDF (46 MB)

Technical Memorandum for Refinement of Streamlined Human Health Risk Assesment. 1/23/2017

Mammoth Mill Fact Sheet 04/05/2017

Frequently Asked Questions for Mammoth Stamp Mill CERCLA Site 04/05/2017

Signed Time Critical Removal Action Memo 4/14/2017 PDF (2 MB)

Forest Order  4/28/2017

News Release5/1/2017

Unilateral Administrative Order (UAO) for Time Critical Removal Action 11-03-2017 PDF (3MB)

Focused Site Inspection (Focused SI) for the Cabins Area Mammoth Mill Site 01/12/2018

 





https://www.fs.usda.gov/detail/inyo/home/?cid=FSEPRD588929