SEC Petition Evaluation Report 

Petition SEC-00051 

 Report Rev # Addendum-1 Report Submittal Date 5-3-2007 

Subject Expert(s): Tim Vitkus, Tim Adler, Ray Clark, Dan Mantooth, Clark Barton, Vernon 

Shockley, Ron Kathren 

Site Expert(s): Jack Buddenbaum 

Petition Administrative Summary 

Petition Under Evaluation 

Petition # Petition 

Type 

Petition B 

Qualification Date 

DOE/AWE Facility Name 

SEC-00051 83.13 August 7, 2006 Los Alamos National Laboratory (LANL) 

Petitioner Class Definition 

All workers of LANL working in all Tech Areas from 1943 - 1975. 

Proposed Class Definition 

All employees of the DOE, its predecessor agencies, or DOE contractors or subcontractors who were 

monitored, or should have been monitored, for radiological exposures while working in operational Technical 

Areas with a history of radioactive material use at the Los Alamos National Laboratory for an aggregate of at 

least 250 work days during the period from March 15, 1943 through December 31, 1975, or in combination 

with work days within the parameters established for one or more other classes of employees in the SEC. 

Related Petition Summary Information 

SEC Petition Tracking #(s) Petition Type DOE/AWE Facility Name Petition Status 

None 

Related Evaluation Report Information 

Report Title DOE/AWE Facility Name 

SEC Petition Evaluation Report, SEC-00061 LANL 

ORAU Lead Technical Evaluator: Tim Vitkus ORAU Review Completed By: K. Jessen, D. Stempfley 

Peer Review Completed By: Signature on File 

Gregory V. Macievic 

05/03/2007 

Date 

SEC Petition Evaluation Reviewed By: Signature on File 

Jim Neton 

05/03/2007 

Date 

SEC Evaluation Approved By: Signature on File 

Larry Elliott 

05/03/2007 

Date 
SEC-00051 Addendum-1 5-03-2007 LANL 

This page intentionally blank 
SEC-00051 Addendum-1 5-03-2007 LANL 

Addendum to Los Alamos National Laboratory (SEC-00051) Special Exposure Cohort 


Evaluation Report 


This addendum revises the class definition at every place it appears in the Evaluation Report for SEC00051 to remove the exclusion of Technical Areas -1-Z, -17, -19, -28, -34, -38, -57, -64, -65, -69, -70, 

and –74, and instead read as follows: 

All employees of the DOE, its predecessor agencies, or DOE contractors or subcontractors who were 

monitored, or should have been monitored, for radiological exposures while working in operational 

Technical Areas with a history of radioactive material use at the Los Alamos National Laboratory for 

an aggregate of at least 250 work days during the period from March 15, 1943 through December 31, 

1975, or in combination with work days within the parameters established for one or more other 

classes of employees in the SEC. 

Table Addendum-1. 

TA-0 

TA-1 (Inclusive of all TA-1 [with the exception TA-1-Z] locations listed in Table 5-1: LANL 

Technical Areas, Operational Dates, and Radionuclides) 

TA-2 (Inclusive of all TA-2 locations listed in Table 5-1: LANL Technical Areas, Operational Dates, 

and Radionuclides) 

TA-3 (Inclusive of all TA-3 locations listed in Table 5-1: LANL Technical Areas, Operational Dates, 

and Radionuclides) 

TA-4 

TA-5 

TA-6 

TA-7 

TA-8 

TA-9 

TA-10-CMR-10 

TA-11 

TA-12 

TA-13 

TA-14 

TA-15 

TA-16 

TA-18 

TA-20 

TA-21 (Inclusive of all TA-21 locations listed in Table 5-1: LANL Technical Areas, Operational 

Dates, and Radionuclides) 

TA-22 

TA-23 

TA-24 

TA-25 

TA-26 

TA-27 

TA-29 

TA-30 

TA-31 
SEC-00051 Addendum-1 5-03-2007 LANL 

TA-32 

TA-35 (Inclusive of all TA-35 locations listed in Table 5-1: LANL Technical Areas, Operational 

Dates, and Radionuclides) 

TA-36 

TA-37 

TA-39 

TA-40 

TA-41 (Inclusive of all TA-41 locations listed in Table 5-1: LANL Technical Areas, Operational 

Dates, and Radionuclides) 

TA-42 

TA-43 

TA-45 

TA-46 (Inclusive of all TA-46 locations listed in Table 5-1: LANL Technical Areas, Operational 

Dates, and Radionuclides) 

TA-48 (Inclusive of all TA-48 locations listed in Table 5-1: LANL Technical Areas, Operational 

Dates, and Radionuclides) 

TA-49 

TA-50 

TA-51 

TA-52 

TA-53 

TA-55 

TA-56 

TA-58 

TA-59 

TA-60 

TA-61 

TA-62 

TA-63 

TA-66 

TA-67 

TA-68 

TA-71 

TA-72 

TA-73 

REASON FOR CLASS MODIFICATION 

NIOSH modified the class definition removing the excluded Technical Areas in the class 

definition. In all previous class definitions, NIOSH has not listed buildings or in this case 

Technical Areas for exclusion. NIOSH recognizes future information could be received which 

may require adding additional Technical areas that are not listed. Therefore, NIOSH has 

modified the existing class definition to allow for this.