Superfund Site: TELEDYNE WAH CHANG
ALBANY, OR

Superfund Site Profile

SITE BACKGROUND

Update: Start of 5th Five-Year Review
The EPA is starting the latest Protectiveness Review for the Teledyne Wah Chang Superfund Site. Protectiveness Reviews assess sites every five years to ensure cleanups continue to be protective of human health and the environment.

Cleanup Summary:
The site was contaminated by wastes, including radionuclides and volatile organic compounds, from a metals production plant. These contaminants impacted soils, sediments, and groundwater. Cleanups took place during the mid and late 1990s. The cleanup combined soil excavation, installation of a system that extracts and treats contaminated groundwater, and land use restrictions. The groundwater extraction and treatment, enhanced by microbial and chemical treatment, is ongoing. Groundwater cleanup levels are expected to be met in 2017.

Public Comment Invited
We want to keep you informed. Also, you may have information helpful to the review team. Please contact Ravi Sanga, EPA Project Manager at sanga.ravi@epa.gov or 206-553-4092 before April 30, 2017, if you have anything you would like us to consider during our review.

 

Site Background
The 225-acre Oremet-Wah Chang (OWC) plant (formerly Teledyne Wah Chang) site is located in Millersburg, Oregon. It is one of the largest producers of rare earth metals and alloys in the United States. The site consists of a 110-acre plant and a 115-acre area made up of four ponds containing sludges from the plant's wastewater treatment facility. It also includes a 60-acre field where sludges containing radium were used as a soil amendment. Process wastes disposed of on the site contained radionuclides, heavy metals and chlorinated solvents. Following cleanup, operation and maintenance activities and monitoring are ongoing.

Key Documents

Explanation of Significant Differences for Groundwater and Sediments Operable Unit (PDF) (11 pp, 3.8MB) - April 2013

Fourth Five-Year Review Report (PDF) (214 pp, 3.8K) - January 2013

Third Five-Year Review Report Addendum (PDF) (12 pp, 620K) - March 2012

Second Explanation of Significant Differences for the June 1994 Record of Decision for Groundwater and Sediments Operable Unit (PDF) (10 pp, 956K) - June 2009

Third Five-Year Review Report (PDF) (148 pp, 1MB) - January 2008

Second Five-Year Review Report (PDF) (45 pp, 2MB) - January 2003

Explanation of Significant Differences to the September 1995 Record of Decision for Surface and Subsurface Soil Operable Unit (PDF) (27 pp, 1.5MB) - September 2001

Record of Decision, Declaration, Decision Summary, and Responsiveness Summary for Surface and Subsurface Soil Operable Unit (PDF) (109 pp, 5.8MB) - September 1995

Record of Decision, Declaration, Decision Summary, and Responsiveness Summary for Groundwater and Sediments Operable Unit (PDF) (348 pp, 21MB) - June 1994

Record of Decision, Decision Summary, and Responsiveness Summary for Interim Response Action for Operable Unit #1 (Sludge Ponds Unit) (PDF) (117 pp, 3.7MB) - December 1989

 

 

 

 



SITE PHOTO GALLERY