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				De Soto Avenue Facility						Print
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			Special Exposure CohortWorker Outreach ActivitiesAdvisory Board Work GroupTechnical DocumentsAdvisory Board and NIOSH DiscussionsPublic CommentsDocument Archive
		
(Site Profile/Docket Number 203)
Location: Los Angeles County, California
Special Exposure Cohort Petition Information
The Special Exposure Cohort (SEC) is a unique category of employees established by the Act (42 CFR Part 83). Claims compensated under the SEC do not have to go through the dose reconstruction process. To qualify for compensation under the SEC, a covered employee must meet specific requirements (e.g., must have at least one of 22 “specified cancers,” and have worked for a specified time period at one of the SEC sites). Classes of employees and work sites can be considered for addition to the SEC through a NIOSH petition process. More information about the Special Exposure Cohort can be found on our Frequently Asked Questions page.
Open/Active SEC Petitions
There is currently one open/active SEC petition from De Soto Avenue Facility, Petition 246. The Advisory Board on Radiation and Worker Health has received the SEC Petition Evaluation Report from NIOSH, will review it, and will send its recommendation to the Secretary of Health and Human Services.
Class(es) Added to the SEC
All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors who worked at the De Soto Avenue Facility in Los Angeles County, California, from January 1, 1959 through December 31, 1964, for a number of work days aggregating at least 250 work days, occurring either solely under this employment or in combination with work days within the parameters established for one or more other classes of employees included in the Special Exposure Cohort.
**Note:** This class was established from Petition 168Petitions Qualified for Evaluation
Below is a list of the petitions that qualified for evaluation. Select a petition on the list to view the table for that particular petition.
Petition 168 (Jan 1, 1959 to Dec 31, 1964)
	Petition 168
Steps in Petition Process:
Petition Details:Date Received
March 10, 2010Date Qualified for Evaluation
March 11, 2010Summary of Information in Petition
**Location:** De Soto Avenue Facility, Los Angeles County, California
**Job Titles and/or Job Duties:** All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors
**Period of Employment:** January 1, 1959 through December 31, 1964
**Note:** The information above is what qualified for evaluation. During our evaluation of whether dose reconstructions can adequately be completed for the above job titles and period of employment, information may cause NIOSH to change some the dates or job titles/duties. Therefore, as this petition proceeds through the SEC petition process and if an SEC class is proposed, the proposed class may not exactly match the above information.Copy of the Petition Received
March 10, 2010 [139 KB (2 pages)]
(January 1, 1959 through December 31, 1964)Federal Register Notice Announcing that a De Soto Avenue Facility SEC Petition has met the Minimum Qualifications for Review and Evaluation
March 22, 2010 [76 KB (1 page)]
(January 1, 1959 through December 31, 1964)SEC Petition Evaluation Report
March 25, 2010 [383 KB (77 pages)]
(January 1, 1959 through December 31, 1964)Petition Discussed by the Advisory Board
The petition was discussed by the Advisory Board during its regular meeting on May 21, 2010.
**Note:** Agendas and transcripts for Board meetings will be posted on the Advisory Board and Public Meetings page as soon as they become available.Advisory Board Recommendation on SEC Petition
June 11, 2010 [34 KB (2 pages)]
(January 1, 1959 through December 31, 1964)HHS Letters to Congress Regarding the SEC Petition
July 14, 2010 [105 KB (10 pages)]
(January 1, 1959 through December 31, 1964)HHS Designation/Determination of Additional Members to the SEC
**Designation:**
July 14, 2010 [42 KB (5 pages)]
(January 1, 1959 through December 31, 1964)
**Note:** A “designation” means that HHS is recommending a class be added to the SEC. A “determination” means that HHS is recommending a class **not** be added to the SEC.Federal Register Notice: Designation/Determination of a Class of Employees for Addition to the Special Exposure Cohort
**Designation:**
July 30, 2010 [87 KB (2 pages)]
(January 1, 1959 through December 31, 1964)
**Note:** A “designation” will be published if there is a recommendation to add a class to the SEC. A “determination” will be published if there is a recommendation **not** to add a class to the SEC.Effective Date for the SEC Class
August 13, 2010
(January 1, 1959 through December 31, 1964)
**Note:** This only applies if the class is added to the SEC.Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort
August 23, 2010 [56 KB (1 page)]
(January 1, 1959 through December 31, 1964)
**Note:** This only applies if the class is added to the SEC.Letter to DOL Regarding the Addition of a New Class of Employees to the SEC
August 24, 2010 [29 KB (1 page)]
(January 1, 1959 through December 31, 1964)
**Note:** This only applies if the class is added to the SEC.Petition 246 (Jan 1, 1965 to Dec 31, 1995)
	Petition 246 Information
Steps in Petition Process:
Petition Details:Date Received
December 18, 2017Date Qualified for Evaluation
March 1, 2018Summary of Information in Petition
**Location:** De Soto Avenue Facility, Los Angeles County, California
**Job Titles and/or Job Duties:** All employees having all job titles
**Period of Employment:** January 1, 1965 through December 31, 1995
**Note:** The information above is what qualified for evaluation. During our evaluation of whether dose reconstructions can adequately be completed for the above job titles and period of employment, information may cause NIOSH to change some the dates or job titles/duties. Therefore, as this petition proceeds through the SEC petition process and if an SEC class is proposed, the proposed class may not exactly match the above information.Copy of the Petition Received
December 18, 2017 [938 KB (18 pages)]
(January 1, 1965 through December 31, 1995)Federal Register Notice Announcing that a De Soto Avenue Facility SEC Petition has met the Minimum Qualifications for Review and Evaluation
March 15, 2018 [68 KB (1 page)]
(January 1, 1965 through December 31, 1995)SEC Petition Evaluation Report
July 3, 2018 [985 KB (66 pages)]
(January 1, 1965 through December 31, 1995)Evaluation Report Sent to the Advisory Board
July 5, 2018
(January 1, 1965 through December 31, 1995)Petition Discussed by the Advisory Board
The Advisory Board discussed this petition on August 23, 2018, and December 12, 2018, during its regular meeting.
**Note:** Agendas and transcripts for Board meetings will be posted on the Advisory Board and Public Meetings page as soon as they become available.Advisory Board Recommendation on SEC Petition
Not applicable at this time.HHS Letters to Congress Regarding the SEC Petition
Not applicable at this time.HHS Designation/Determination of Additional Members to the SEC
Not applicable at this time.Federal Register Notice: Designation/Determination Regarding a Class of Employees for Addition to the Special Exposure Cohort
Not applicable at this time.Effective Date for the SEC Class
Not applicable at this time.Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort
Not applicable at this time.Letter to DOL Regarding the Addition of a New Class of Employees to the SEC
Not applicable at this time.
SEC Petitions Not Qualifying for Evaluation
There was one additional petition received that did not qualify for evaluation. The petition was already included in the SEC.
Worker Outreach Activities
Based on a recommendation from the Advisory Board to provide workers and site experts with opportunities to participate in developing the technical documents used in dose reconstruction, NIOSH established a Worker Outreach Program.
At Worker Outreach Meetings, current and former DOE and AWE employees have opportunities to obtain information about Site Profiles, Technical Basis Documents, and Technical Information Bulletins, and to provide information for consideration and possible use in dose reconstruction. This process is valuable to ensure that the technical documents used in dose reconstruction contain correct and useful information.
Worker Outreach Activities for the De Soto Avenue Facility:
No activities are scheduled at this time.
Advisory Board Work Group on Area IV of the Santa Susana Field Laboratory and De Soto Avenue Facility
This Work Group is responsible reviewing the SEC petition from the Area IV of the Santa Susana Field Laboratory and De Soto Avenue Facility petitioners, reviewing the NIOSH Evaluation Report of the petition, considering issues that may be raised by the Board’s contractor (SC&A) concerning the NIOSH Evaluation Report, and for assisting NIOSH and SC&A in the resolution of such issues. The Work Group may recommend to the Board, changes in the Site Profile as appropriate. The Work Group should strive to develop a recommendation to the Board on whether a class should be added to the SEC.
**Work Group Members:**
Henry A. Anderson, M.D. (Chair)
Josie Beach
Nicole E. Martinez, Ph.D.
Meeting Information:
**October 15, 2020**Teleconference Meeting of the Advisory Board’s Work Group on the Area IV of the Santa Susana Field Laboratory and De Soto Avenue Facility
Time/Location:
10:30 a.m. (Eastern Time)
                    Meeting Type: Teleconference; Public, No Comment Period
Videoconference:
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Meeting ID: 160 6763 3819
                    Meeting Passcode: ABRWH#01
Teleconference:
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Meeting ID: 160 6763 3819
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Pre-Decisional Document Policy
Available Meeting Items:
Agenda [71 KB (1 page)]
Transcript [495 KB (107 pages)]Presentations:
SC&A: Summary of Recent SC&A Work Products for SEC-00235 and SEC-00246 Evaluations [656KB (34 pages)]
NIOSH/DCAS: SEC-00235 Area IV Santa Susana Field Laboratory Summary of Efforts [267 KB (17 pages)]
NIOSH/DCAS: SEC-00246 De Soto Avenue Facility Update [282 KB (12 pages)]Pre-Decisional Document Policy
Please note that as part of the procedures and processes of the Advisory Board’s Work Groups, several kinds of pre-decisional documents may be developed. These pre-decisional documents, such as white papers, matrices, working drafts, etc., are distributed among Work Group members as research and background tools to facilitate discussion and deliberation. Although discussion during a public meeting may cover pre-decisional documents, these documents often are not further revised or finalized, and thus do not reflect the final determination or evaluation of the Advisory Board and its Work Groups. Additionally, some pre-decisional documents not otherwise posted on the website may contain sensitive information, which would require an interested party to obtain such documents by filing a Freedom of Information Act (FOIA) request with the CDC/ATSDR FOIA office at foiarequests@cdc.gov.
Technical Documents
If the energy employee’s personal radiation information is incomplete, NIOSH will use other sources to estimate the radiation dose. This may involve using technical documents called Site Profiles, Technical Basis Documents, and Technical Information Bulletins.
Site Profile
Note: The Site Profile below can be used to complete dose reconstructions for Area IV of the Santa Susana Field Laboratory, the Canoga Avenue Facility (Vanowen Building), the Downey Facility, and the De Soto Avenue Facility (these are sometimes referred to as Energy Technology Engineering Center [ETEC] or Atomics International).
Introduction [128 KB (8 pages)]
            Revised August 30, 2006
**Revision Includes:** Revision to change site name to Atomics International throughout document in keeping with revised DOE site naming conventions. Approved issue of Revision 01. Added information to Site Description in Section 1.2.1 on page 6. No further changes occurred as a result of formal internal review. Incorporates NIOSH formal review comments. This revision results in no change to the assigned dose.
Site Description [1.6 MB (47 pages)]
            Approved February 2, 2006
Occupational Medical Dose [224 KB (25 pages)]
            Revised October 31, 2008
**Revision Includes:** Revision to change the site name to Area IV of the Santa Susana Field Laboratory, the Canoga Avenue Facility, the Downey Facility, and the De Soto Avenue Facility (sometimes referred to as Energy Technology Engineering Center [ETEC] or Atomics International) to match the new DOE site naming conventions. Added Attributions and Annotations section. Organ doses are revised as follows:
AP lumbar spine, before 1971, uterine dose is decreased by a factor of 10; correcting an error,
AP and LAT lumbar spine, after 1997, except for breast and remainder, all organ doses are marginally decreased due to a change in beam quality assumption,
AP and LAT lumbar spine, all years, remainder organ dose is increased by a factor ranging from 2 to 15 due to a change in the reference organ used to define the remainder.
Doses to skin at additional locations to the primary beam entrance are added in accordance with Revision 01 of ORAUT-PROC-0031. All skin doses at newly tabulated locations are lower than the skin dose at the primary beam entrance location. Maximum organ dose tables for PA and LAT chest, and AP and LAT lumbar spine, are deleted in accordance with Revision 01 of ORAUT-PROC-0031. A discrepancy between the dose tables and the text is corrected. The corrected frequency is lower to ensure any misunderstanding due to the discrepancy that would result in a favorable to claimant dose assessment. Text in Section 3.5.1.2 about examination frequency is relocated to Section 3.4 where it logically belongs.
Breast doses from AP lumbar spine projections for periods after 1971 are increased by a factor 2.2 to 2.6. For the LAT lumbar spine projections the breast dose increases range from no change, up to a factor of 1.1. The increase results from a change in the assumed dose conversion factors recommended by the Principal Medical Dosimetrist.
The term “view” is globally replaced with the more modern term “projection” and the term Entrance Skin Exposure (ESE) is replaced by the more modern term “entrance air kerma.” The term “routine” when describing examination frequency is replaced by the more descriptive word “periodic.” The terms “entrance” and “exit” in Tables 3-2 through 3-5 are replaced with “pre-employment” and “termination.”
Additional information on eye/brain organ doses prior to 1971 is added to Tables 3-2 and 3-3. The column showing entrance skin exposure in Table 3-2 through 3-5 is eliminated as this is not needed for dose reconstruction.
The possibility that photon energy could be less than 30 keV is eliminated as this is applicable only to mammography. Testes dose in Table 3-5 associated with LAT lumbar spine exposures after 1997 decreases by 60% as a data error in the DCF is corrected.
The description of skin doses has been modified to match that in newly issued guidance, and skin dose tables have been separated into two each for clarity in describing doses under poorly collimated versus well collimated exposure conditions.
Incorporates formal NIOSH review comments. Constitutes a total rewrite of the document.
Occupational Environmental Dose [278 KB (23 pages)]
            Revised April 26, 2010
**Revision Includes:** Incorporates SEC information in Section 4.1 and formal internal and NIOSH review comments.
Occupational Internal Dose [1.5 MB (82 pages)]
            Revised April 26, 2010
**Revision Includes:** Revision to change the site name to Area IV of the Santa Susana Field Laboratory, the Canoga Avenue Facility, the Downey Facility, and the De Soto Avenue Facility (sometimes referred to as Energy Technology Engineering Center [ETEC] or Atomics International. Updated required language in Section 5.1. Additional information added on the solubility of uranium aluminide and sensitivity of bioassay analyses. Added Attachment G, Sensitivity of Bioassay Analyses by Bioassay Code U. S. Testing and Other Laboratories. Acronyms added for ICRP, kCi, kg, mo, POC, TTF, wk, μCi, μm, and §. Changes are being made to Section 5.1.3, Scope, as requested by DOL to clarify which organizations performed work eligible for compensation. Reporting levels and MDAs were adjusted in Table 5-3 for NSEC. A paragraph was deleted from Section 5.2, Internal Dosimetry Overview. The abbreviation “UR” for uranium radiometric was added to Section 5.3.1.3. Last paragraph of Section 5.3.1.4 was modified to clarify the sensitivity (reporting level) vs. MDA. The numbers and order in the documents for tables 5-7 and 5-8 were switched. An additional footnote was added to Table 5-9. Minor changes were made to the references and glossary. A list of figures was added to Attachment B. The figures and descriptions in Attachment A were reordered, the descriptions of two forms were combined, and in some cases descriptions were added to the same page as the figures. Attachment D was split into two attachments (D and E) and the original attachments E and F were re-lettered to F and G. The Table in Attachment G was split into in-vitro and in-vivo tables. Numerous minor edits were also made to clarify or improve the readability of the document without changing the technical content. Added Attributions and Annotations section. Activity fractions for reactors and related facilities were eliminated and references to OTIB-0054 were added. Added SEC information and added information in Section 5.3.1.5 pertaining to the use of CEP data. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of document.
Occupational External Dose [176 KB (20 pages)]
            Revised April 26, 2010/
**Revision Includes:** Incorporates SEC information in Section 6.1.2 and corrected an error in Table 6-8 pertaining to NTA film and footnote b. Incorporates formal internal and NIOSH review comments.
Technical Information Bulletins (TIBs)
Internal Co-Exposure Dosimetry Data for Area IV of the Santa Susana Field Laboratory and the De Soto Avenue Facility [794 KB (32 pages)]
**Document Number:** ORAUT-OTIB-0080 Rev-01
**About this Document:** Provides internal coworker data for Santa Susana Field Laboratory and the De Soto Avenue Facility workers.
**Revised:** September 1, 2020
**Revision Includes:** Adds the potential and intake rates for type SS plutonium. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.
**Note:** This document was previously titled “Internal Coworker Dosimetry Data for Area IV of the Santa Susana Field Laboratory and the De Soto Avenue Facility.” It was changed to accurately describe the coworker model as a co-exposure model. Previous versions of the is document are located on this page under the Document Archive for Technical Information Bulletins (TIBs) section.Advisory Board and NIOSH Discussions on De Soto Avenue Facility
The De Soto Avenue Facility discussion papers listed below are working documents prepared by NIOSH or its contractor for use in discussions with the Advisory Board on Radiation and Worker Health or its Working Groups or Subcommittees. Draft, preliminary, interim, and white paper documents are not final NIOSH or Advisory Board (or their technical support and review contractors) positions unless specifically marked as such. These documents represent preliminary positions taken on technical issues prepared by NIOSH or its contractor.
The discussion papers have been reviewed to identify and redact any information that is protected by the Privacy Act 5 USC §552a and have been cleared for distribution.
SC&A: Update on SEC-00235 (Area IV) and SEC-00246 (De Soto) Evaluations [344 KB (23 pages)]
            Presentation at the December 8-9, 2020, Teleconference Meeting of the Advisory Board on Radiation and Worker Health
NIOSH/DCAS: SEC-00235 Area IV Santa Susana Field Laboratory Summary of Efforts [267 KB (17 pages)]
            Presentation at the October 15, 2020, Teleconference Meeting of the Advisory Board’s Work Group on Area IV of the Santa Susana Field Laboratory and De Soto Avenue Facility
NIOSH/DCAS: SEC-00246 De Soto Avenue Facility Update [282 KB (12 pages)]
            Presentation at the October 15, 2020, Teleconference Meeting of the Advisory Board’s Work Group on Area IV of the Santa Susana Field Laboratory and De Soto Avenue Facility
SC&A: Summary of Recent SC&A Work Products for SEC-00235 and SEC-00246 Evaluations [656KB (34 pages)]
            Presentation at the October 15, 2020, Teleconference Meeting of the Advisory Board’s Work Group on the Area IV of Santa Susana Field Laboratory & De Soto Avenue Facility
SC&A Draft: SC&A Evaluation of Petitioner-Supplied Material for SEC-00246 and SEC-00235 [357 KB (29 pages)]
            Contract No. 75D30119C04183
            Document No. SCA-TR-2020-SEC005, Revision 0
            October 9, 2020
SC&A Memo: Summary of Worker Interviews Conducted in 2018 and 2019 in Support of the SEC-00246 Evaluation [119 KB (5 pages)]
            July 14, 2020
NIOSH/ORAU: NIOSH Response to SC&A Review of SEC-00246 De Soto Avenue Facility Evaluation Report [103 KB (11 pages)]
            May 13, 2019
SC&A Memo: Review and Characterization of Boeing Incident Database for SEC-00246 [83 KB (7 pages)]
            June 10, 2019
SC&A: De Soto Facility SEC Petition-00246 Preliminary Review [982 KB (29 pages)]
            Presentation at the December 12-13, 2018, Meeting of the Advisory Board on Radiation and Worker Health
SC&A Draft: Review of the NIOSH Evaluation Report for SEC-00246 at the DeSoto Facility (1965–1995) [6 MB (75 pages)]
            Contract No. 211-2014-58081
            SCA-TR-2018-SEC006, Revision 0
            December 7, 2018
SC&A Presentation: De Soto Facility SEC Petition-00246 Preliminary Review [1 MB (29 pages)]
            Presentation at the December 3, 2018, Teleconference Meeting of the Advisory Board’s Work Group on the Area IV of Santa Susana Field Laboratory
NIOSH/DCAS: De Soto Avenue Facility SEC-00246 [362 KB (18 pages)]
            (Presentation at the August 22-23, 2018, Meeting of the Advisory Board on Radiation and Worker Health)
SC&A Draft: A Review of ORAUT-OTIB-0080, Rev. 00: “Internal Coworker Dosimetry Data for Area IV of the Santa Susana Field Laboratory and the DeSoto Avenue Facility,” Rev. 0 [1.3 MB (69 pages)]
            Contract No. 211-2014-58081
            SCA-TR-OTIB2014-0080, Rev. 0
            November 24, 2014
Public Comments on De Soto Avenue Facility Documents
How to Submit Comments
Comments on De Soto Avenue Facility Documents can be submitted to the NIOSH Docket Officer electronically by email at nioshdocket@cdc.gov or printed comments can be mailed to:
NIOSH Docket Office
Robert A. Taft Laboratories, MS-C34
1090 Tusculum Avenue
Cincinnati, OH 45226
Please include the Site Profile/Docket Number (203) on all comments.
Comments Received
At this time, no comments have been submitted.
Document Archive for De Soto Avenue Facility
Site Profile Document Archive
Site Profile: Introduction [89 KB (8 pages)]
            Approved February 21, 2006
Site Profile: Occupational Medical Dose
Revised September 8, 2006 [393 KB (25 pages)]
**Revision Includes**: Revision to change the site name to Atomics International throughout the document in keeping with DOE site naming conventions. Updated required language in Section 3.1. Purpose section (Section 3.2) and Scope section (Section 3.3) were added. No further changes occurred as a result of formal internal review. Incorporates NIOSH formal review comments.
Approved February 3, 2006 [289 KB (24 pages)]
Site Profile: Occupational Environmental Dose
Revised March 8, 2007 [476 KB (22 pages)]
**Revision Includes:** Revision to change the site name throughout the document. Changes site name to Area IV of the Santa Susana Field Laboratory, the Canoga Avenue Facility (Vanowen Building), the Downey Facility, and the De Soto Avenue Facility (sometimes referred to as Energy Technology Engineering Center [ETEC] or Atomics International. Updated required language in Section 4.1. Purpose section (Section 4.2) and Scope section (Section 4.3) were added. Incorporates internal and NIOSH formal review comments. This revision results in no change to the assigned dose and no PER is required.
Approved March 1, 2006 [282 KB (21 pages)]
Site Profile: Occupational Internal Dose [1.6 MB (64 pages)]Approved February 22, 2006
Site Profile: Occupational External Dose
Revised November 16, 2006 [186 KB (17 pages)]
**Revision Includes:** Revision to change the site name to Atomics International throughout the document in keeping with DOE site naming conventions. Updated required language in Section 6.1. Constitutes a total rewrite of document. Incorporates internal formal review comments and corrects typographical errors. Adds a paragraph to section 6.1.2 and clarification to missed dose and magnitude of background dose, Sections 6.2 and 6.8 respectively, as requested by DOL. This revision results in no change to the assigned dose, and no PER is required.
Approved February 22, 2006 [162 KB (17 pages)]Technical Information Bulletins (TIBs) Document Archive
Internal Coworker Dosimetry Data for Area IV of the Santa Susana Field Laboratory and the De Soto Avenue Facility [269 KB (28 pages)]
**Document Number:** ORAUT-OTIB-0080 Rev-00
**About this Document:** Provides internal coworker data for SSFL workers.
**Approved:** March 14, 2014
**Note:** This document was previously titled “Internal Coworker Dosimetry Data for Area IV of the Santa Susana Field Laboratory and the De Soto Avenue Facility.” It was changed on September 1, 2020, to accurately describe the coworker model as a co-exposure model. Previous versions of the is document are located on this page under the Document Archive for Technical Information Bulletins (TIBs) section.
							
					
							Last Reviewed:  June 30, 2022						Source: 	National Institute for Occupational Safety and Health
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