AAR Manufacturing, Inc.
1.0 Site Identification
| Type of Site: | Complex Decommissioning Site |
| Location: | Livonia, MI |
| License No.: | STB-362 |
| Docket No.: | 40-0235 |
| License Status: | Terminated License |
| Project Manager: | Ted Smith |
2.0 Site Status Summary
The AAR site, located in Livonia, Michigan, was formerly owned by Brooks & Perkins, Inc. (B&P), a licensee of the U.S. Atomic Energy Commission (AEC). AEC Source Material License No. D-547 was issued to B&P on January 17, 1957, and then was superseded by License No. STB-0362 on August 10, 1961. AEC terminated license STB-0362 on May 17, 1971. In 1981, AAR purchased B&P and obtained the property.
Thorium contaminated surface and subsurface soil has been identified at several locations on the site. The site was added to the Site Decommissioning Management Plan list in August 1994. AAR submitted its final remediation plan (RP) on October 14, 1997, and NRC approved the RP on May 22, 1998. In November 1998, AAR completed additional site characterization and identified large volumes of soil on the western portion of the site that contained thorium in concentrations exceeding the approved cleanup criterion. In September 1999, AAR effectively withdrew its approved RP and proposed using "unimportant quantities of source material" (0.05 percent by weight source material), as defined in 10 CFR 40.13(a), as a decommissioning criterion. After staff consultation with the Commission on this policy issue, NRC informed AAR that the revised remediation approach was not acceptable, by letter dated August 9, 2002.
In November 2002, AAR proposed unrestricted use of the eastern parcel of the site and restricted use of the western parcel of the site. AAR planned to enter into a settlement agreement with the NRC on the restrictions and controls needed for restricted use. The agreement would include using a restrictive covenant that would outline the restrictions on the use of the site, such as prohibiting farming or developing residential properties on the site. Since that time, AAR and NRC staff completed dose assessments and resolved technical issues associated with decommissioning the site.
AAR is currently considering an unrestricted use decommissioning for the entire site, which would require remediation of soils on the western parcel to unrestricted use levels. The cost of decommissioning is unknown at this time.
3.0 Major Technical or Regulatory Issues
AAR is not a licensee.
4.0 Estimated Date For Closure
03/31/2013
