United States Nuclear Regulatory Commission - Protecting People and the Environment

Chevron Mining, Inc. (State of California)

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1.0 Site Identification

Type of Site: Complex Decommissioning Site
Location: Mountain Pass, CA
License No.: 3229
Docket No.:
License Status: Unknown

2.0 Site Status Summary

Originally licensed as Molly-Corp, a rare earth mine. Thorium concentrations exist at levels greater than .05% by weight. The waste is present in both settling ponds and a 14 mile long waste disposal tube that has leaked on both Bureau of Land Management and National Park Service land. The tube extends to Lake Ivanpah near the Nevada border.

The ponds have been decommissioned since 2010 but the pipeline is still an active project. The site was split into the actual MolyCorp operations for the active minesite (License #3229) which is a completed action; and the pipeline removal operation licensed under Chevron Environmental Management Company (License #7447). The pipeline has all been removed as of 2012 but disposal is an ongoing issue for the waste.

3.0 Major Technical or Regulatory Issues

Amending license to an Industrial Broadscope with multiple jurisdiction by the California Department of Toxics, Bureau of Land Management and the National Park Service. Now the remaining issue is the disposal of the soil and contaminated pipe produced during the removal operation.  No final status survey has been submitted yet.

Page Last Reviewed/Updated Wednesday, February 19, 2014