EPA ID# OR7122307658
EPA Region 10
Lake County

2nd Congressional District

Other Names: Lucky Lass/White King Mine, Fremont National Forest Uranium Mines (USDA), Fremont National Forest/White King and Lucky Lass Uranium Mines (USDA)
Last Update: April, 2010

Show details for Site DescriptionSite Description
Hide details for Threats and ContaminantsThreats and Contaminants

Media Affected: Soils, Sediments, Surface Water, Groundwater
Surface water and sediments in Auger Creek and nearby wetlands have been contaminated by mining activities. The primary hazards posed by the mine waste include potential exposure to gamma radiation from radioactive constituents, and the contamination of soils and surface and groundwater by heavy metals and radioactive constituents. Direct contact or ingestion of contaminated soils, surface water, sediments, or groundwater could pose a health risk.

Hide details for Cleanup ProgressCleanup Progress

Early Actions: Between September 1995 and April 1996, EPA performed an early action during which erosion control measures were installed to protect the ore and soil stockpiles, and to prevent further spreading of contaminants to site soils and the creek.

Pond Neutralization: In August 1998 approximately 9,000 lbs of hydrated lime was applied to the White King Mine Pond in an attempt to neutralize the acidity. Monitoring of the pond continued until November 19, 1998. The results at that time indicated that the pond was neutralized from a pH of 4-5 to 6-7. Further monitoring of the pond was conducted during the summer of 1999. Approximately 10 tons of limestone rock was added to the pond in October 1999 to provide longer term stabilization of the pH. Monitoring of the pond water pH continues on an annual basis.

Long-Term Actions: The Feasibility Study was completed in August 1999 and a Proposed Plan was issued for public comment on October 1, 1999. Two extensions to the comment period were requested which were granted by EPA. The comment period closed on January 10, 2000. The Record of Decision was completed in September 2001. The remedy for the site includes consolidating and capping the most highly contaminated soils from both mine Sites at the White King Mine area and continued neutralization of the acidity in the White King Pond.

EPA completed negotiations with Potentially Responsible Parties (PRPs) to conduct the Remedial Design and Remedial Action. A Consent Decree was published in the federal register October 26, 2005 for a 30 day comment period.
Pursuant to a Unilateral Administrative Order the PRPs completed the remedial design in Spring 2005 and began cleanup work in the Summer of 2005. By October 2005 the PRPs had completed the following activities:

1. Re-contour the White King Protore Stockpile so that it is no longer within the Augur Creek floodplain.
2. Removal of off-pile areas where there is mine-related waste above remediation levels and placement of these material on the regraded Protore Stockpile, referred to in the design documents as the Consolidated Stockpile.
3. Excavation of the White King Overburden Stockpile and placement on the Consolidated Stockpile.
Placement of 20 inches of cover soil on portions of the Consolidated Stockpile.

Beginning in the Summer of 2006 the remaining work at the site was begun. This included placement of final covers at the White King Consolidated Stockpile, re-contouring and covering of the Lucky Lass Overburden stockpile, and construction of a wetland in the vicinity of the former White King Overburden stockpile.

During 2007, 2008, and 2009 an annual operation and maintenance inspection was conducted by EPA, ODEQ, Oregon Department of Energy, and the Forest Service. In addition annual groundwater, pond water, and Augur Creek monitoring were conducted during this period of time. In 2009 repairs were made to the Consolidated Stockpile in order to address damage from erosion in one small area. No additional repairs were required at either the White King or Lucky Lass sites.

The first Five-Year review is scheduled to be completed in May 2010.

Hide details for Regional ContactsRegional Contacts

PHONE NUMBER:206-553-2806
PHONE NUMBER:(503)326-6994
Information pertaining to this site is housed at the following location(s):
Lakeview Ranger District (Administrative Record)
Fremont National Forest
HC 64, Box 60
Lakeview, Oregon 97630

Lake County Library (Administrative Record)
County Courthouse
513 Center Street
Lakeview, Oregon 97630