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Martin Marietta Reduction Fac. RCRA/CERCLA L'fill

Summary Information
(last updated on: 12/1/2021 12:38:45 PM)
The Former Martin Marietta facility (Site) was used for aluminum manufacturing from 1958 through 2003 and is located in The Dalles, Oregon adjacent to the Columbia River.

The facility produced aluminum via electrolytic reduction of alumina. Harvey Aluminum began operating at the site in 1958. Martin Marietta Corporation purchased Harvey Aluminum in 1970 and operated until 1984, when the plant was shut down. Martin Marietta later merged with Lockheed to become Lockheed Martin. Before 1984, 5,000 tons of waste cathodic materials containing arsenic, cyanide, and polynuclear aromatic hydrocarbons (PAHs) were disposed of in an on-site landfill. An additional 64,670 cubic yards of cathode waste material were deposited on other portions of the site. Scrubber sludges containing fluorides and PAHs were disposed of in four scrubber sludge ponds. Cyanide was detected in groundwater beneath the site and in leachate from the landfill. EPA added the site to the National Priorities List (NPL) in 1986.

A Remedial Investigation and Feasibility Study (RI/FS) began in 1985 and a 1988 Record of Decision (ROD) outlined the remedial decision for the site. A 1989 Consent Decree between Martin Marietta, EPA, and DEQ memorialized the scope of remedial design and remedial actions (RD/RA) at the site including future monitoring, operations and maintenance requirements.

Site cleanup remedial actions were completed from 1989 to 1992. Cathode waste material from around the site was placed into an on-site CERCLA landfill, which was then closed and capped. Two open scrubber sludge ponds were covered with soil, while two older ponds had been covered with soil and vegetation prior to 1984. Groundwater wells in the area were abandoned, and users were connected to the City of The Dalles municipal water supply. EPA issued Explanation of Significant Differences in 1994 and 2017 to address the modifications to the ROD cleanup plan. While EPA issued a Certificate of Completion for the cleanup in 1995, operation and maintenance activities continue and include long-term operation of the leachate collection and treatment system and groundwater monitoring. In 1995, EPA delisted the site from the NPL based on the conclusion that the remedial actions meet performance standards.

Northwest Aluminum Company (NWA) leased the plant from Martin Marietta in 1986, and purchased the site in 1992. Even though NWA had purchased the plant, the Site’s waste management units (CERCLA Landfill, the RCRA Landfill, and the Scrubber Sludge Ponds) remained the responsibility of Lockheed Martin. Plant operations resumed in 1987 until 2003, when NWA declared bankruptcy and ceased aluminum manufacturing at the site.

In 2005, Golden Northwest Aluminum Holding Company was formed pursuant to reorganization plan under federal bankruptcy court order and creates NWA as a wholly-owned subsidiary to operate The Dalles plant. From 2007 to 2011, NWA with oversight by DEQ’s Cleanup program decommissioned the aluminum plant structures and performed additional investigation and cleanup of the site. In 2012, DEQ issued a conditional No Further Action (CNFA) determination to NWA.

Currently the site is composed of many parcels of land including some that are being redeveloped. These properties include the CERCLA landfill, the RCRA landfill, and the Scrubber Sludge Ponds (ECSI #72), the former NWA property which includes the former rodeo grounds and the Hydro Extrusion property (#4557, #4793, #5955), and The Dalles Disposal site (#2165).
General Site Information
Site: Martin Marietta Reduction Fac. RCRA/CERCLA L'fill (ECSI Site ID: 72) CERCLIS (EPA) Id052221025
Project Manager: David Anderson Investigative Status:Listed on the Confirmed Release List or Inventory
PM Phone: (541) 633-2012 NPL(National Priority Listing):No
Address: 3313 W 2nd St. Is this site an Orphan?No
The Dalles, 97058 Is this site a brownfield?No
County: WASCO Action Underway or Needed: OPERATION & MAINTENANCE
Region: Eastern Region Click for more details ...  
NOTE: This site has one or more long-term controls designed to manage site risks. Click here for details.

Site Documents
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File NameCategory File Size MB Document Date Upload Date
Deed restriction document-Lockheed.pdf E&ES documents 1.5029 3/20/2013
2010 SAP.pdf Miscellaneous 2.5705 4/5/2010
Certification of Completion,1995-02-10.pdf Miscellaneous 0.1665 4/13/2012
MOA-DEQ-and-EPA-042804.pdf Miscellaneous 1.4397 4/13/2012
72-MartinMarietta-EPA-ComfortLetter-RodeoGrounds-NWAluminum-10-8-2015.pdf Miscellaneous 4.1907 10/8/2015 12/9/2016
Lockheed Martin Permit 12-05-17.pdf Miscellaneous 1.4203 12/5/2017 3/4/2021
Martin Marietta Consent Decree (1989).pdf Orders/Consent Judgments 4.3418 7/5/1989 12/26/2017
CERCLA Figures 4-2010 Fig 3a.pdf Reports 0.2825 1/19/2011
CERCLA Figures 4-2010 Fig 3b.pdf Reports 0.3828 1/19/2011
CERCLA Figures 4-2010 Fig 3c.pdf Reports 0.3724 1/19/2011
Figure 1 -Aerial Photo Site Map.pdf Reports 0.6631 1/19/2011
RCRA-Figures 4-2010 Fig 2a.pdf Reports 0.1867 1/19/2011
RCRA-Figures 4-2010 Fig 2b.pdf Reports 0.2283 1/19/2011
RCRA-Figures 4-2010 Fig 2c.pdf Reports 0.2487 1/19/2011
Tbl 2. RCRA MW Data.pdf Reports 0.1116 1/19/2011
Tbl 4. CERCLA MW Data.pdf Reports 0.0900 1/19/2011
2016 RCRA CERCLA GW Rpt no Appendices.pdf Reports 14.9484 5/25/2016 10/26/2017
Fluoride Report - 5-14-04.pdf Reports 3.2666 5/14/2004 10/26/2017
Semiannual RCRA and Annual CERCLA Rpt. (June 2013).pdf Reports 8.7272 6/7/2013 12/26/2017
72-EPA-Former-MarinMarieetaSite-5th-5yr-Review-2018.pdf Reports 1.4567 5/1/2018 5/26/2022
72-CERCLA-RCRA-Combined-Semiannual-Report-spring-2018-text.pdf Reports 20.8533 5/1/2018 5/26/2022
72-MM-LM-6th-5yr-review-May2023.pdf Reports 8.8167 5/1/2023 9/12/2023
Site Links

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