ML23136B281

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Historical Site Assessment for the National Institute of Standards and Technology
ML23136B281
Person / Time
Site: 07000398
Issue date: 04/25/2023
From: Jones P
US Dept of Commerce, National Institute of Standards & Technology (NIST)
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML23136B277 List:
References
TAC L32643, EPID L-2022-DFA-0010
Download: ML23136B281 (1)
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Text

Historical Site Assessment for the National Institute of Standards and Technology ReNuke #NIST-TR-23-001 (Perma-Fix #144276-RPT-001)

National Institute of Standards and Technology (NIST) 100 Bureau Drive Gaithersburg, MD REVISION: Original Approvals:

Paul Jones 04/25/2023 Prepared By: __________________________

Paul Jones (Apr 25, 2023 15:32 EDT) ________________________

Paul Jones, RRPT Date Reviewed By: __________________________ 04/25/2023 Jeffrey Knight, RRPT Date Reviewed By: __________________________ 04/25/2023 Ryan Larochelle, RRPT Date Approved By: __________________________ 04/25/2023 Ian Howard Date

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page ii of iv TABLE OF CONTENTS

1. EXECUTIVE

SUMMARY

................................................................................................ 1

2. PURPOSE OF THE HISTORICAL SITE ASSESSMENT ............................................... 2 2.1 Data Quality Objectives .......................................................................................... 2
3. PROPERTY IDENTIFICATION ....................................................................................... 3 3.1 Physical Characteristics .......................................................................................... 3 3.1.1 License Holder ........................................................................................................ 3 3.1.2 Location .................................................................................................................. 3 3.1.3 Topography ............................................................................................................. 3 3.1.4 Geology (Reserved) ................................................................................................ 3 3.1.5 Hydrology ............................................................................................................... 3 3.1.6 Meteorology ............................................................................................................ 4
4. HISTORICAL SITE ASSESSMENT METHODOLOGY ................................................. 5 4.1 Approach and Rationale .......................................................................................... 5 4.2 Boundaries of the site.............................................................................................. 7 4.3 Documents Reviewed ............................................................................................. 7 4.4 Property Inspections................................................................................................ 7 4.5 Personnel Interviews ............................................................................................... 7
5. SITE LOCATION AND HISTORICAL RADIOLOGICAL DESCRIPTION .................. 9 5.1 NIST Background ................................................................................................. 10 5.2 Historical Radiological Activities ......................................................................... 10 5.3 Current License Possession Limits ....................................................................... 10 5.4 Incident History .................................................................................................... 14 5.5 Radioactivity Migration ........................................................................................ 14
6. INVESTIGATION OF SNM-362 LICENSED ROOMS ................................................. 15
7. Conclusion ........................................................................................................................ 38 7.1 DQO RESULTS.................................................................................................... 38
8. REFERENCES ................................................................................................................. 40 NIST Historical Site Assessment Specific Documents .................................................... 40 LIST OF TABLES Table 1. Interviews.......................................................................................................................... 8 Table 2. Possession Limits (with Nuclide and Chemical/Physical Form Only) ........................... 11 Table 3. Historical Site Assessment Findings............................................................................... 16

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page iii of iv

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page iv of iv LIST OF FIGURES Figure 1. Process for Integrating HSA with Characterization and FSS .......................................... 6 Figure 2. Location of NIST Facilities ............................................................................................. 9 LIST OF APPENDICES Appendix A. Maps Appendix B. HSA Investigation List for All Rooms

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page v of iv LIST OF ACRONYMS AND SYMBOLS CFR Code of Federal Regulations D&D Decontamination and Decommissioning DQO Data Quality Objective HSA Historical Site Assessment MARSSIM Multi-Agency Radiation Survey and Site Investigation Manual NIST National Institute of Standards and Technology NMSS Nuclear Materials Safety and Safeguards NRC U.S. Nuclear Regulatory Commission NUREG Nuclear Regulatory Commission Guidance Document Perma-Fix Perma-Fix Environmental Services, Inc.

RAM Radioactive Materials ReNuke ReNuke Services, Inc.

RSO Radiation Safety Officer TEDE Total Effective Dose Equivalent WSCC Washington Suburban Sanitary Commission

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 1 of 41

1. EXECUTIVE

SUMMARY

The National Institute of Standards and Technology (NIST), headquartered in Gaithersburg, Maryland, contracted ReNuke Services, Inc. who teamed with Perma-Fix Environmental Services to develop facility decommissioning cost estimates (DCEs) for their non-reactor radiological facilities in Gaithersburg. As part of the DCE the ReNuke Services team performed this Historical Site Assessment (HSA). The conclusions of the HSA identified 22 rooms requiring radiological scoping surveys. This report describes the summary of the Historical Site Assessment performed as part of the DCE activities.

The team designed and implemented the historical site assessment using the guidance of the Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) such that the quality of the data produced would be suitable for use in determining MARSSIM classification.

During the last quarter of 2022 and 1st quarter of 2023, the ReNuke Services Team performed historical site assessment for the following buildings of the NIST facility: 101, 202, 205, 208, 217, 218, 220, 221, 222, 223, 224, 226, 227, 245, 301, 303, and 423. During the HSA 324 rooms were evaluated and from these facilities 181 rooms were found to have an impact on the DCE.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 2 of 41

2. PURPOSE OF THE HISTORICAL SITE ASSESSMENT The purpose of this HSA is to document a comprehensive investigation to identify, collect, organize, and evaluate historical information relevant to the applicable areas of License No. SNM-362 for the NIST site. This historical information is used to guide radiological surveys and provide initial survey area classifications based on guidance contained in NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM). The classifications will be used to guide scoping study survey efforts. Final structure and land area classifications used for the final status survey will be based on the HSA, Scoping, site routine survey data and future characterizations.

The HSA describes the site's physical configuration, identifies potential radioactive constituents of site contamination, assesses the migration of contaminants, identifies contaminated media, identifies non-impacted and impacted areas, and classifies impacted areas.

2.1 Data Quality Objectives The HSA objectives included the following:

  • Identifying licensed buildings/rooms,
  • Differentiate impacted from non-impacted areas,
  • Provided an assessment of the likelihood of residual radioactivity migration,
  • Identify which licensed buildings/rooms require further radiological investigation.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 3 of 41

3. PROPERTY IDENTIFICATION 3.1 Physical Characteristics 3.1.1 License Holder U.S. Department of Commerce National Institute of Standards and Technology 100 Bureau Drive, Mailstop 1731 Gaithersburg, Maryland 20899-1731 NRC License Number SNM-362 3.1.2 Location National Institute of Standards and Technology 100 Bureau Drive Gaithersburg, MD 20899 Longitude: North -77° 12' 59.3676" Latitude: West 39° 8' 39.9228" NIST is located in the center of Gaithersburg, MD near Interstate 270 Exit 10 in Montgomery County, Maryland. The site is approximately 30 miles Northeast of Washington Dulles International Airport. Located approximately 1 mile to the west is Seneca Creek State Park and Clapper Lake. The city of Gaithersburg has a population of approximately 69,657. Its largest major city is Washington DC with a population of 712,816.

3.1.3 Topography The site is relatively flat with an average elevation of 502 feet above mean sea level. The property is not located within a 100-year flood zone.

3.1.4 Geology (Reserved) 3.1.5 Hydrology Surface-water drainage at the site flows southwest to the Muddy Branch stream and its tributaries.

Muddy Branch discharges to the Potomac River about 2 river miles (3 river kilometers) upstream from the Washington Suburban Sanitary Commission (WSSC) water filtration plant, and approximately 5.5 river miles (8.9 river kilometers) upstream of the uppermost intake for the District of Columbias water supply. The site is more than 10 river miles (16 river kilometers) along Muddy Branch from its confluence with the Potomac River. The nearest naturally occurring surface water body to the site is Tributary A of Muddy Branch, approximately 1,000 feet (305 meters) to the west-northwest of the site.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 4 of 41 Based on information from the well records of Montgomery County Health Department, there is no municipal or private use of Muddy Branch for drinking water. The closest downstream user of surface water for drinking purposes is the WSSC filtration plant on the Potomac River, at least 12 river miles (19 river kilometers) from the site. There is no known use of Muddy Branch or other surface waters within the county for irrigation.

While irrigation farming does occur in this region, well water is the primary source of its water. In Montgomery County, there are no irrigated farms.

3.1.6 Meteorology The climate in Montgomery County Maryland is mild, generally warm, and temperate.

The following are the annual averages for weather (since 1970):

  • 43 inches of rain per year
  • 18 inches of snow per year
  • 113 days per year of some form of precipitation.
  • 201 days per year of sun
  • July is the hottest month with an average high of 86.5°
  • January is the coldest nighttime with an average of 25.2°

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 5 of 41

4. HISTORICAL SITE ASSESSMENT METHODOLOGY 4.1 Approach and Rationale This HSA documents those events and circumstances occurring during the history of the facility that contributed to the contamination of portions of the site environs above background levels.

Information relevant to changes in the radiological status of the site following publication of this HSA will be considered part of the ongoing characterization evaluations and decommissioning activities. These ongoing activities include the expansion of the site groundwater investigation and evaluations of subsurface contamination. The results of ongoing investigations into the extent of subsurface contamination will drive continuing remediation and/or mitigation efforts as appropriate.

The HSA involves collecting, organizing, and evaluating information that describes the site in terms of physical configuration and the extent to which the site is radioactively contaminated because of plant operations and activities. The HSA information is used to bound and classify survey areas. Boundaries of the identified survey areas are based on operational history, including recorded significant events and common radiological profiles from previous characterization efforts. Survey areas for structures and land will be broken into multiple survey units where appropriate to meet survey unit sizes recommended by MARSSIM prior to final status surveys.

The general criteria used to classify the survey areas are drawn from the regulatory guidance of MARSSIM as follows:

Non-impacted Area: Areas with no reasonable possibility (or extremely low probability) of residual contamination. Non-impacted areas are typically off-site and may be used as background reference areas.

Impacted Area: Areas that may contain residual radioactivity in excess of natural background or fallout levels. All impacted areas must be classified as Class 1, 2 or 3 as described in MARSSIM.

Class 1: Impacted areas that have, or had prior to remediation, a potential for radioactive contamination (based on site operating history) or known contamination (based on previous radiological surveys) above the anticipated Derived Concentration Guideline Level (DCGL).

Class 2: Areas that have, or had prior to remediation, a potential for radioactive contamination or known contamination, but are not expected to exceed the DCGL.

Class 3: Any impacted areas that are not expected to contain any residual radioactivity or are expected to contain levels of residual radioactivity at a small fraction of the DCGL, based on site operating history and previous radiation surveys.

Information collected for each survey area includes a description of the survey area, an operational history, an evaluation of past and current translocation pathways, and a description of the status of

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 6 of 41 decommissioning work. The findings section for each survey area includes an assessment of radiological contaminants, contaminated media, current radiological status, results of any subsurface mitigation or remediation efforts, and remaining decommissioning activities. The general process for integrating the HSA with continuing characterization, DCGL Development, and the Final Status Survey is shown in the following flowchart.

Review operational history and identify significant events contributing to contamination of the site.

Assemble available historical reference documentation.

Assign survey area classification.

Publish Historical Site Assessment document.

Obtain/develop site-specific derived concentration guideline levels (DCGL).

Update survey area packages as decommissioning activities progress. Include results of continuing characterization activities and document progress of remediation of sub-surface End-state of decommissioning attained. All areas meet DCGL criteria.

Evaluate data quality in survey area packages using DQO/DQA process and prepare characterization survey plans.

Obtain additional characterization data, if necessary, and document turn-over surveys.

Begin final status survey process.

Figure 1. Process for Integrating HSA with Characterization and FSS

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 7 of 41 4.2 Boundaries of the site The site is bounded by Highway 117 to the North, Highway 124 to the West, Muddy Branch Road to the East, and a Fenced boundary to the South (bordering a housing development and Conservation Lane).

4.3 Documents Reviewed In developing this HSA, the following documents were reviewed:

  • Previous Decommissioning Cost Estimates
  • Radiological Characterization Survey Reports
  • Environmental Report
  • Licensee Event Reports
  • Construction Drawings
  • Topographical Maps
  • Construction Drawings
  • As Built Drawings
  • Radiological Surveys
  • Incident Reports Section 7.0 of this report provides the NIST specific documents which impact the Findings and Conclusions of this report.

4.4 Property Inspections No detailed property inspection was performed in association with this Historical Site Assessment.

Inspections were limited to the building exteriors and interior rooms listed in Table 3, Historical Site Assessment Findings.

4.5 Personnel Interviews Personnel interviews of current and former site personnel were held during the site inspection and via telephone during the HSA process. Personnel were selected based on their employment history at the site. Personnel were interviewed that held positions in maintenance, operations, and radiation protection. Undocumented events were not discovered during this process, but the interviews did prove helpful in assessing the historical operations. In total, four (4) current and former employees were interviewed. There was no impact to the HSA findings as a result of these interviews to be accounted for in Table 3, Historical Site Assessment Findings.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 8 of 41 Table 1. Interviews Number Name Position 1 Manny Mejias Radiation Safety Officer 2 Christopher Young Health Physicist/Waste and Facilities Program Area Lead 3 Larry Lucas Research Chemist 4 Ron Colle Research Chemist

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 9 of 41

5. SITE LOCATION AND HISTORICAL RADIOLOGICAL DESCRIPTION The NIST facility is located at 100 Bureau Drive, Gaithersburg, MD 20899.

Figure 2. Location of NIST Facilities

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 10 of 41 5.1 NIST Background The National Institute of Standards and Technology (NIST) was founded in 1901 and is now part of the U.S. Department of Commerce. NIST is one of the nation's oldest physical science laboratories. Congress established the agency to remove a major challenge to U.S. industrial competitiveness at the time a second-rate measurement infrastructure that lagged behind the capabilities of the United Kingdom, Germany and other economic rivals.

From the smart electric power grid and electronic health records to atomic clocks, advanced nanomaterials and computer chips, innumerable products and services rely in some way on technology, measurement and standards provided by the National Institute of Standards and Technology.

Today, NIST measurements support the smallest of technologies to the largest and most complex of human-made creations from nanoscale devices so tiny that tens of thousands can fit on the end of a single human hair up to earthquake-resistant skyscrapers and global communication networks.

5.2 Historical Radiological Activities Special Nuclear material (SNM) License SNM-362 was first issued in 1960 by the Atomic Energy Commission to the National Bureau of Standards (renamed as the National Institute of Standards and Technology (NIST) in 1988). NIST is a federal agency within the Department of Commerce.

NIST uses licensed materials for research, development, calibration, and testing activities. Under SNM-362, NIST develops, maintains, and disseminates national standards for ionizing radiation and radioactivity to support health care, industry, and homeland security at its Gaithersburg, MD, site.

License SNM-362 was renewed in 1979, 1985, 1991, 1997 and 2007. The current license, which also recognizes NIST as a Type A Broad Scope License, was scheduled to expire on July 31, 2007.

On June 29, 2007, NIST submitted an application requesting renewal of license SNM-362 for a period of ten years, under Title 10 of the Code of Federal Regulations (10 CFR) Part 70, to continue its authorization to possess and use SNM. As a result of these operations, many laboratory areas and systems, such as fume hoods, gloveboxes, sinks, drains and ventilation systems have been impacted.

5.3 Current License Possession Limits The license possession limits were reviewed as part of the historical site assessment. Due to the very large license limits, Table 5.1 below excludes the quantity of the nuclides in the possession limits column since this information is OUO and the site is currently operating with all the nuclides listed below.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 11 of 41 Table 2. Possession Limits (with Nuclide and Chemical/Physical Form Only)

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 12 of 41

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 13 of 41

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 14 of 41 5.4 Incident History In the early planning meetings to develop the HSA, a determination was made with the NIST Radiation Safety Officers (RSOs) concurrence, that it was appropriate to conduct Incident Investigations from the date of the last DCE (June 2009). Reference document, NIST Incident Reports represents the recorded incidents provided for investigation as part of this HSA. Limited specifics pertaining to each incident were communicated in the log, but sufficient conclusive outcome of the incidents existed, and resolved that (3) locations were impacted, via the generation of a Fixed Contamination Area (FCA) for rooms B157, B49 and B142 in Building 245.

Specifically, fixed contamination remains in 245, B157 (around the cup sink on countertop-from former glovebox), B49 (concrete shield walls) & B142(benchtop). These rooms with FCAs are accounted for in Table 3 HSA Findings.

5.5 Radioactivity Migration Evaluating radioactivity migration at the NIST Site within the Laboratory and Accelerator Facilities was relatively straight forward. The site maintains a quality controlled routine survey program allowing the team to gain confidence that internally, buildings radioactive material is controlled within the posted areas and accounted for appropriately. No incidents reported any indication of continued radioactive material loss. The only penetration points through walls, floors and ceilings that radioactive material can assumed to be spread is via the design features of the laboratory drains and ventilation ducts.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 15 of 41

6. INVESTIGATION OF SNM-362 LICENSED ROOMS Based on potential contaminants, their associated radiation, and the types of residual contamination categories, the following buildings/rooms were evaluated for general MARSSIM classification and survey recommendations.

Areas potentially meeting the definition of an impacted area are included below. Classifications listed below are preliminary and likely will be revised as data gaps are filled and additional information is collected throughout the HSA, scoping, and characterization processes at final decommissioning. Areas within radiologically controlled areas are assumed to be a minimum of MARSSIM Class 3 unless survey results support a non-impacted classification.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 16 of 41 Table 3. Historical Site Assessment Findings Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Ampoule sealing room -uranium X158 Walkdown for DCE 202 liquids Note: this room was listed YES YES 3 YES NO (A158) impact/cost.

as A158 in 2009 DCE, U-nat similar to x158, shrink wrapping Walkdown for DCE 202 X154 SRM ampoule boxes prepared YES YES 3 YES NO impact/cost.

elsewhere NIST Recommends this room for scoping for Surface and Microanalysis, classification and 217 C115 YES YES 3 YES YES Unsealed TRU, U, Th verification. Survey and Mass Spec contamination with Walkdown for DCE Uranium impact/cost.

Surface and Microanalysis, Sealed Fe-55 only Walkdown for DCE 217 D113 low-level RSIMS Authorized YES YES 3 YES NO impact/cost.

source use location for HEU(U-235)

Surface and Microanalysis, Sealed Fe-55 only RSIMS Authorized Walkdown for DCE 217 D101 YES YES 3 YES NO source use location for HEU(U- impact/cost.

235), Unat, DU Surface and Microanalysis, Sealed Fe-55 only RSIMS Authorized Walkdown for DCE 217 D108 YES YES 3 YES NO source use location for HEU(U- impact/cost.

235)

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 17 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Particle Metrology, Sealed beta sources only (inc. Kr-85 and H-3)

Walkdown for DCE 217 C121 RSIMS - authorized source use YES YES 3 YES NO impact/cost.

location for LEU (U-235 powder on filter)

N/A, Selected Low Risk Source Walkdown for DCE 217 F122 Use YES NO 3 YES NO impact/cost.

low level (sealed sources only)

N/A, Selected Low Risk Source Walkdown for DCE 217 F118 YES NO 3 YES NO Use impact/cost.

N/A, Selected Low Risk Source Walkdown for DCE 217 F112 Use historical YES NO 3 YES NO impact/cost.

Very Low Level N/A, Selected Low Risk Source Walkdown for DCE 217 F111 YES NO 3 YES NO Use historical impact/cost.

N/A, Selected Low Risk Source Walkdown for DCE 217 F109 YES NO 3 YES NO Use historical impact/cost.

N/A, Selected Low Risk Source Walkdown for DCE 217 F106 Use historical YES NO 3 YES NO impact/cost.

Low level, alpha N/A, Selected Low Risk Source Walkdown for DCE 217 F101 Use historical (LEU, Mixed YES NO 3 YES NO impact/cost.

Byproduct)

D115 N/A, Selected Low Risk Source Walkdown for DCE 217 (aka Use historical YES NO 3 YES NO impact/cost.

D117) SEM Room, low level NIST Recommends this N/A, low activity: sealed/unsealed room for scoping for 217 D105 YES NO 1 YES YES Pu-239, HEU, U-nat, GD-148, classification and Pu-238, DU, Cs-137 solid sealed verification. Survey and

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 18 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Walkdown for DCE impact/cost.

Alpha and beta natural background (environmental Walkdown for DCE 217 C105 levels) YES NO 3 YES NO impact/cost.

Very Low Level, Ni-63 sealed source/device Formerly unsealed U - solid sealed GL device - Ni 63. Solid or powder- Ni-63,H-3,Th-nat,U- Walkdown for DCE 220 A122 YES YES 3 YES NO nat. HEU, LEU, DU, Th-232, impact/cost.

MBYP. Gas GL device - Kr-85.

Liquid - LEU, HEU solid sealed GL device - Ni 63.

Solid or powder- Ni-63, H-3, Th-Walkdown for DCE 220 A32 nat, U-nat., HEU, LEU, DU, Th- YES NO 3 YES NO impact/cost.

232, MBYP. Gas GL device - Kr-

85. Liquid - LEU, HEU Solid - Unat. Powder- Unat Walkdown for DCE 220 A266 Micro and Nano Analysis Sample YES YES 1 YES NO impact/cost.

Prep Sample receipt room for other Walkdown for DCE 220 A264 YES NO 3 YES NO rooms in 220 - All low level. impact/cost.

Solid Th-nat sourceMicro and Walkdown for DCE 220 A226 YES YES 3 YES NO Nano analysis impact/cost.

Solid Sealed - Na-22, Ra-226, Ni- Walkdown for DCE 220 A218 YES NO 3 YES NO 63, H-3. Gas - Kr-85 impact/cost.

Walkdown for DCE 220 A05 YES NO 3 YES NO liquid - I -129 impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 19 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Walkdown for DCE 220 A251 YES NO 3 YES NO solid- Ag-108m (bare metal) impact/cost.

Walkdown for DCE 220 A321 YES NO 3 YES NO sealed GAS- H-3 impact/cost.

Walkdown for DCE 220 A324 YES NO 3 YES NO Solid Sealed- H-3 impact/cost.

Walkdown for DCE 220 A340 YES NO 3 YES NO Sealed GAS - H-3 impact/cost.

Walkdown for DCE 220 B118 YES NO 3 YES NO Solid - HEU impact/cost.

Walkdown for DCE 220 B122 YES NO 3 YES NO Solid - HEU impact/cost.

Walkdown for DCE 220 B329 YES NO 3 YES NO Solid Sealed - H-3 impact/cost.

Solid Sealed Fe-55, Am-241, Walkdown for DCE 221 C11 HEU YES NO 3 YES NO impact/cost.

SE4, Low Risk Source use only Multimodal microscopy (door also connects to B51) Walkdown for DCE 221 B49 YES NO 3 YES NO Solid Material Unat, powder impact/cost.

Unat, sealed Liquid DU NIST Recommends this Preparing of samples to be room for scoping for analyzed in B49, Solid material classification and 221 B43 YES NO 3 YES YES Unat, powder Unat, Liquid DU, verification. Survey and (sealed Unat, DU, & Fe-55) Walkdown for DCE impact/cost.

Sealed solid or gases, H-3, liquid Walkdown for DCE 221 B367 YES NO 3 YES NO H-3 impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 20 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Sealed gas Kr-85, solid sealed Walkdown for DCE 221 B355 YES NO 3 YES NO Am-241 impact/cost.

Sealed solid Po-210, Same facility Walkdown for DCE B333 & as 331 cleared impact/cost.

221 YES NO 3 YES NO B331 Sealed solid Po-210, Pd-103, & This room includes former sealed liquid H-3, Am-241 room B331 Sealed solid or gas, Ni-63, Po-Walkdown for DCE 221 B21 210, &Kr-85. This room includes YES YES 3 YES NO impact/cost.

room B23 on previous DCE.

Sealed gas Kr-85; solid sealed Am-241, Eu-155, & Cs-137; Gd-Walkdown for DCE 221 A58 158, Pu-238; Liquid C-14 sealed YES YES 3 YES NO impact/cost.

Low level counting (gamma counting)

Solid sealed Am-241 Walkdown for DCE 221 A12 YES NO 3 YES NO Absorption Measurement impact/cost.

Walkdown for DCE 223 B321 Sealed: DU glass, Ni-63 YES NO 3 YES NO impact/cost.

Walkdown for DCE 223 B313 Solid: U-nat glass YES YES 3 YES NO impact/cost.

Walkdown for DCE 223 B167 U-nat sealed solid low risk YES NO 3 YES NO impact/cost.

Walkdown for DCE 223 B139 U-nat sealed solid low risk YES NO 3 YES NO impact/cost.

Walkdown for DCE 223 B133 U-nat sealed solid low risk YES NO 3 YES NO impact/cost.

Walkdown for DCE 223 B125 Co-57 solid sealed YES NO 3 YES NO impact/cost.

Walkdown for DCE 223 A234 sealed Fe-55 YES NO 3 YES NO impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 21 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

B150, Walkdown for DCE 223 sealed Co-57, Sn-119 YES YES 3 YES NO B151 impact/cost.

Currently X-ray Only Lab Walkdown for DCE 223 A132 (Sealed Fe-55 from previous YES YES 3 YES NO impact/cost.

report)

High intensity X-ray, sealed solid Walkdown for DCE 223 A150 YES YES 3 YES NO Co-57 (1975) impact/cost.

Currently X-ray Only Lab(Sealed Walkdown for DCE 223 A232 YES YES 3 YES NO Fe-55) (2004) impact/cost.

NIST Recommends this room for scoping for Cellulose nano material handling classification and 224 A306 YES NO 3 YES YES lab., C-14 liquid unsealed verification. Survey and Walkdown for DCE impact/cost.

Isotope Ratio Gas A264 / Chromatography, sealed Kr-85. Walkdown for DCE 224 YES YES 3 YES NO A262 Am-241, Po-210 impact/cost.

Sealed Only Walkdown for DCE 224 B154 Previously powder-U-nat, Th-nat YES YES 3 YES NO impact/cost.

Walkdown for DCE 226 B325 Co-57 solid sealed source only YES NO 3 YES NO impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 22 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

NIST Recommends this room for scoping for Mixed by product solid classification and 226 B159 material storage only (Cs-137/Co- YES NO 3 YES YES verification. Survey and 60)

Walkdown for DCE impact/cost.

GLD, solid sealed: Ni-63. Also, Walkdown for DCE 227 A126 solid HEU source authorized (15 YES YES 3 YES NO impact/cost.

Bq low risk)

Walkdown for DCE 227 B147 YES YES 3 YES NO impact/cost.

H sealed gas U-233 liquid source found in room in 2004, so quarterly Walkdown for DCE 227 B326 YES YES 3 YES NO surveys performed until 2006, impact/cost.

then decommissioned.

Walkdown for DCE 227 B141 Solid: C-14 Liquid: C-14, H-3 YES YES 3 YES NO impact/cost.

Radioactive Waste Storage Walkdown for DCE 227 B143 Solid sealed: Ba-133, Po-210. Liq. YES YES 3 YES NO impact/cost.

LSC cal sources: C-14. H-3 Solid- H-3. Liquid Sealed: P-32.

Liquid: C-14, P-32, H-3, S-35 Walkdown for DCE 227 B243 YES YES 3 YES NO Engineered Soft Nanomaterials, impact/cost.

Radioactive Waste Storage Walkdown for DCE 227 B333 YES YES 3 YES NO impact/cost.

U-233 liquid

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 23 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

H-3 solid sealed Walkdown for DCE 227 A316 Room includes former Room YES YES 3 YES NO impact/cost.

A320 NIST Recommends this room for scoping survey to support classification and 227 B353 Solid: Pb-210. Liquid: Pb-210 YES NO 1 YES YES verification. Survey and Walkdown for DCE impact/cost.

NIST Recommends this High Resolution Mass room for scoping for Spectrometer classification and 227 B345 YES NO 1 YES YES Solid: Pb-210, liquid: I-129 verification. Survey and authorized but not used. Walkdown for DCE impact/cost.

NIST Recommends this room for scoping for liquid: I-129. Solid: Pb-210 classification and 227 B343-1 This room was formerly B343 in YES NO 3 YES YES verification. Survey and HP database Walkdown for DCE impact/cost.

Walkdown for DCE 227 B225 P-32 only, short 1/2 life YES NO 3 YES NO impact/cost.

Walkdown for DCE 227 A230 U-nat liquid Uranyl Nitrate YES NO 3 YES NO impact/cost.

Liquid Sealed: H-3. Solid Sealed: Walkdown for DCE 227 B151 YES NO 3 YES NO H-3, DU. Gas sealed: H-3 impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 24 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

NIST Recommends this Solid sealed: Pb-210. Solid: Pb- room for scoping for 210, U-238, HEU, Th-nat. Powder classification and 227 A334 YES NO 1 YES YES

- U-nat. Liquid: HEU, Pb-210, U- verification. Survey and 233, Th-230 Walkdown for DCE impact/cost.

MIRF, High-energy Electron Walkdown for DCE 245 A004 Beam Irradiator. YES NO 3 YES NO impact/cost.

I-125, Cs-137, Am-241 MIRF, High-energy Electron Walkdown for DCE 245 A005 Beam Irradiator. YES YES 1 YES NO impact/cost.

TRU, U, Beta MIRF Set-Up Lab, Staging area for MIRF experiments. Note: This Walkdown for DCE 245 A006 YES NO 3 YES NO is the same room as A006-1. impact/cost.

Sealed Sr-90 Walkdown for DCE 245 A010 RAM Waste Storage YES NO 1 YES NO impact/cost.

Former LINAC Storage Room, Walkdown for DCE 245 A012 YES NO 1 YES NO Sealed Source Storage impact/cost.

Walkdown for DCE 245 A013 Storage YES NO 1 YES NO impact/cost.

Walkdown for DCE 245 A014 Storage YES NO 1 YES NO impact/cost.

Californium, 2.5 MeV, and 14 MeV Neutron Irradiation Walkdown for DCE 245 A018 YES NO 1 YES NO Californium Neutron Irradiation impact/cost.

Facility (CNIF)

Walkdown for DCE 245 A10E Rad Instrument Calibration YES NO 2 YES NO impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 25 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

He3 Cell Lab He3 cell preparation and optical Walkdown for DCE pumping impact/cost.

245 B002 YES NO 3 YES NO This lab was Decommissioned by New construction. NO RAM ATL (previously B006, B008. in this room yet.

Then rebuilt as B002)

Beta Particle Calibration Lab Walkdown for DCE 245 B003 YES NO 3 YES NO (inside old B002) impact/cost.

Fabrication Setup Lab, Former use of Sr-90, Pm-147, Tl-204, DU, U-238, Cs-137, Ru-106, & P- Walkdown for DCE 245 B009 YES YES 3 YES NO

32. impact/cost.

420 kV XRM is located in 245/B013 Gamma Calibration Range Walkdown for DCE 245 B014 YES YES 3 YES NO Radiation Measurements impact/cost.

Walkdown for DCE B015* TES Experimental impact/cost.

245 (formerly Measure sources by TES Decay YES YES 3 NOTE: Radioactive material YES NO B11) Energy Spectrometry use in room since last ATL survey.

Mammography X-ray standards and calibration Walkdown for DCE 245 B017 YES YES 3 YES NO with Sealed beta-gamma, impact/cost.

unsealed Co-57 Horizontal Beam Control Area Walkdown for DCE 245 B019 Control room for irradiator, with YES YES 3 YES NO impact/cost.

Sealed Cs-137 Horizontal Beam Cal Facility Walkdown for DCE 245 B021 YES YES 3 YES NO (Sealed Co-60, Cs-137, Sr-90) impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 26 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Set Up Lab Staging and set-up of Rad facility Walkdown for DCE 245 B023 equipment. Storage of YES YES 1 YES NO impact/cost.

radioactive material and SRM material.

Currently - Temporary SRM Natural Matrix Storage B024 Storage of natural matrix SRMs; Walkdown for DCE 245 YES YES 3 YES NO bsmt Storage of bulk material used in impact/cost.

preparation of natural matrix SRMs.

B024* Radionuclide Microcalorimetry Walkdown for DCE 245 YES NO 1 YES NO sub bsmt Detector Vault, Cf-252 impact/cost.

X Ray Spectrometry Swing SpaceMeasurement of low-energy photon emitting sources using Si Walkdown for DCE 245 B025 YES NO 3 YES NO (Li) detectorsThis room was impact/cost.

previously B25, RSD surveyed, then recommissioned for Rad.

MnSO4 Mini Bath Small Mn Bath Lab Walkdown for DCE 245 B029 YES YES 3 YES NO Old DCE Notes: accelerator impact/cost.

Support, sealed sources Walkdown for DCE 245 B034 Co-60 Irradiator YES YES 3 YES NO impact/cost.

Walkdown for DCE 245 B035 Vertical Beam Calibration YES YES 3 YES NO impact/cost.

Walkdown for DCE 245 B036 Co/Cs Vertical Calibration YES YES 3 YES NO impact/cost.

Source Storage Walkdown for DCE 245 B041 YES YES 1 YES NO radioactive material storage impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 27 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Walkdown for DCE 245 B044 Former RAM Waste Storage YES YES 3 YES NO impact/cost.

Health Physics Liquid Waste Tanks Walkdown for DCE 245 B045 Room contains two 5000 gal tanks YES YES 2 YES NO impact/cost.

for holding waste for radiation sinks in building 245.

Walkdown for DCE 245 B041 RAM Storage Room YES YES 1 YES NO impact/cost.

Setup Lab Walkdown for DCE 245 B125 YES YES 3 YES NO Sealed Ra-Be (1961-1985) impact/cost.

Well Counters Counting sealed sources in re-entrant ionization chambers (dose Walkdown for DCE 245 B127 YES NO 3 YES NO calibrators) and the Wallac impact/cost.

Wizard 2480 NaI gamma well counter RAM Receiving Walkdown for DCE 245 B131 Facility is used for the counting of YES YES 2 YES NO impact/cost.

radioactive samples RAM Storage Walkdown for DCE 245 B132 YES YES 1 YES NO Shielded facility for RAM storage impact/cost.

RAM Receiving Walkdown for DCE 245 B133 Facility is used for the receipt of YES YES 1 YES NO impact/cost.

radioactive packages High Dose Calibration Lab Solid State Dosimeter Calibration Walkdown for DCE 245 B140 YES YES 3 YES NO in Support of NIST Absorbed impact/cost.

Dose Certification Services

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 28 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Calibration Lab (Sealed AmBe, PuBe, RaBe, Cf-252) Walkdown for DCE 245 B141 YES YES 1 YES NO Mn bath Control Room impact/cost.

(Historical Contam.)

RAM Storage (fixed Contam. In Walkdown for DCE 245 B142 room) YES YES 1 YES NO impact/cost.

B142 is caged area in room B143.

Neutron Source Strength Calibration Facility The neutron calibration facility Walkdown for DCE 245 B143 consists of three areas: control YES YES 1 YES NO impact/cost.

room B141; Mg Bath source storage room B143; and the caged Radium storage area B142.

High Level RAM Waste Storage.

Walkdown for DCE 245 B145 For storage of high-level RAM YES YES 1 YES NO impact/cost.

waste RAM Waste Processing Walkdown for DCE 245 B146 YES YES 1 YES NO Processing of RAM waste impact/cost.

RAM Waste Storage - DSW Walkdown for DCE 245 B152 YES NO 1 YES NO Storage of RAM waste - DSW impact/cost.

RAM Waste Storage Walkdown for DCE 245 B155 Storage Closet used for RAM YES YES 3 YES NO impact/cost.

waste RAM Waste Storage - Liquid Walkdown for DCE 245 B156 YES NO 1 YES NO Storage of liquid RAM waste impact/cost.

RAM Waste - Drum Processing and StoragePackaging and Walkdown for DCE 245 B157 YES YES 1 YES NO Storage of RAM waste for impact/cost.

shipments

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 29 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

NIST Recommends this room for scoping for HVAC Room (Supporting B-wing classification and 245 B200 Contaminated Filter Banks) YES YES 1 YES Yes verification. Survey and Penthouse Walkdown for DCE impact/cost.

Walkdown for DCE 245 B20 Source Storage Closet YES NO 3 YES NO impact/cost.

Low-level Radiation Detector Testing Facility Walkdown for DCE 245 B21 Low-level instrument YES NO 1 YES NO impact/cost.

characterization and calibration, usually with gamma sources Calibration & Radiation Detector Testing Walkdown for DCE 245 B23 Mixed lab - experimental testing YES NO 1 YES NO impact/cost.

(682.03 only) and detector calibration (neutron & gamma) 1.5 MV Dynamitron, HEU, Am- Walkdown for DCE 245 B26 YES NO 3 YES NO 241, & Co-60 impact/cost.

Vacuum Systems Setup Walkdown for DCE 245 B37 Co-60, Sr-90, Sealed Sources. YES YES 3 YES NO impact/cost.

(Used in 1960 -1980)

Radioactive Labeling Walkdown for DCE 245 B44 Phantom Preparation (PET) YES YES 1 YES NO impact/cost.

Historical HPLC Validation Source Preparation Walkdown for DCE 245 B46 Source Preparation, Source YES YES 1 YES NO impact/cost.

Dilution & Storage Ionizing Chamber Measurements Walkdown for DCE 245 B47 YES YES 3 YES NO Ion Chamber Measurements impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 30 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Radiochemistry Lab Walkdown for DCE 245 B48 Medium-level radiochemistry YES YES 1 YES NO impact/cost.

Laboratory SRM STORAGE Walkdown for DCE 245 B49 Storage of SRMs and DHS YES YES 3 YES NO impact/cost.

sources Counting Laboratory Facility is used for the processing Walkdown for DCE 245 B50 YES YES 1 YES NO and counting of radioactive impact/cost.

samples.

Experiment Set-up Lab Walkdown for DCE 245 B51 Store equipment and radioactive YES YES 1 YES NO impact/cost.

sources Interim Waste/Source Storage Walkdown for DCE 245 B53 Prescreening of laboratory YES NO 3 YES NO impact/cost.

radiological waste.

Gas Counting Development of Walkdown for DCE 245 C003 radioactive gas standards and YES NO 3 YES NO impact/cost.

calibrations Low Level Counting - Beta Walkdown for DCE 245 C005 source measurements using gas- YES NO 3 YES NO impact/cost.

flow proportional counters Low Level Counting- Alpha Walkdown for DCE 245 C007 Alpha Spectroscopy YES NO 3 YES NO impact/cost.

measurements Activity Measurements Walkdown for DCE 245 C009 Source measurements using a YES NO 3 YES NO impact/cost.

NaI(ti) detectors

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 31 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Low Level Counting - Gamma Measurement of radioactive Walkdown for DCE 245 C011 sources with gammy ray YES NO 3 YES NO impact/cost.

spectrometers to determine radionuclide activities Microcalorimetry Walkdown for DCE 245 C013 Process sources for TES DES YES NO 3 YES NO impact/cost.

measurements Gamma Ray Spectrometry Walkdown for DCE 245 C015 Gamma-Ray spectrometry YES NO 3 YES NO impact/cost.

measurements Gamma Spectrometry Source Walkdown for DCE 245 C019 StorageStorage of radioactive YES NO 3 YES NO impact/cost.

sources Gamma Irradiation Facility Walkdown for DCE 245 H007-1 Calibration of gamma-ray YES NO 3 YES NO impact/cost.

measuring instruments Beta Particle Lab Calibration of Beta-emitting Walkdown for DCE 245 H015 YES NO 3 YES NO sources and extrapolation impact/cost.

chambers GR 420 Irradiation Facility Walkdown for DCE 245 H018 YES NO 3 YES NO High Dose Irradiations impact/cost.

Radioactive Waste Tank Room.

Liquid lab hold-up tanks that are Walkdown for DCE 245 H031-1 YES NO 3 YES NO tested for radioactivity prior to impact/cost.

release to sanitary sewer NIST Recommends this Health Physics Sample room for scoping for 245 H104 Preparation Lab YES NO 1 YES YES classification and Processing and preparation of verification. Survey and

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 32 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

RAM samples, typically prior to Walkdown for DCE counting impact/cost.

HDR Brachytherapy Lab -

Experiment Walkdown for DCE 245 H108-1 YES NO 3 YES NO Calibration of high dose rate impact/cost.

brachytherapy sources HDR Storage Closet Walkdown for DCE 245 H108-2 Source storage prior to use in YES NO 3 YES NO impact/cost.

experimental side Source Receiving Facility for the manipulation of large items and Walkdown for DCE 245 H113 YES NO 3 YES NO counting samples from incoming impact/cost.

packages.

Temporary Holding Vault.

Temporary storage location for Walkdown for DCE 245 H113-1 YES NO 3 YES NO incoming and outgoing RAM impact/cost.

packages Walkdown for DCE 245 H113-2 Source Storage - High Level YES NO 3 YES NO impact/cost.

Walkdown for DCE 245 H113-3 Source Storage - Low Level YES NO 3 YES NO impact/cost.

NIST Recommends this room for scoping for classification and 245 H113-4 Source Receiving - Processing YES NO 3 YES YES verification. Survey and Walkdown for DCE impact/cost.

Brachytherapy Suite Walkdown for DCE 245 H115 Calibration of low dose rate YES NO 3 YES NO impact/cost.

brachytherapy sources

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 33 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Brachytherapy Calibration Brachy seed WAFAC calibration Walkdown for DCE 245 H115-1 YES NO 3 YES NO and HPGE spectrum impact/cost.

measurements NIST Recommends this room for scoping for classification and 245 H119 Detector Testing Storage 1 YES NO 2 YES YES verification. Survey and Walkdown for DCE impact/cost.

Walkdown for DCE 245 H119-2 Detector Testing Storage 2 YES NO 3 YES NO impact/cost.

Walkdown for DCE 245 H119-3 Detector Testing YES NO 3 YES NO impact/cost.

NIST Recommends this Health Physics Sample room for scoping for Measurement Lab classification and 245 H120 Measurement of RAM samples YES NO 1 YES YES verification. Survey and for quantitative and/or qualitative Walkdown for DCE information impact/cost.

Medium Level Chemical General Walkdown for DCE 245 H204 Source preparation, minor YES NO 1 YES NO impact/cost.

chemical operations Medium Level Environmental Radiochemistry NIST Recommends this Source chemical separation for room for scoping for 245 H208 analysis and certification, source YES NO 1 classification and YES YES (reference material) preparation verification. Survey and and dilution, and chemical and Walkdown for DCE source (limited) storage impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 34 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Medium Level Source Production Walkdown for DCE 245 H210 Medium level radiochemistry YES NO 1 YES NO impact/cost.

laboratory NIST Recommends this room for scoping for High Level Radiochemistry MAP classification and 245 H214 Source preparation, dilution, YES NO 1 YES YES verification. Survey and dispensing, and storage Walkdown for DCE impact/cost.

Scintillation Spectrometry Source Walkdown for DCE 245 H215 measurement by liquid YES NO 3 YES NO impact/cost.

scintillation Packaging Room Walkdown for DCE 245 H217 Packaging of high-level YES NO 2 YES NO impact/cost.

radioactive sources Walkdown for DCE 245 H218-1 High Level Nuclear Med YES NO 1 YES NO impact/cost.

Walkdown for DCE 245 H218-2 Medium Level Nuclear Medicine YES NO 1 YES NO impact/cost.

Decontamination Room Location to facilitate the Walkdown for DCE 245 H219 YES NO 3 YES NO decontamination of equipment impact/cost.

and personnel NIST Recommends this Alpha Beta Measurements room for scoping for Solid alpha and beta emitting classification and 245 H220 sources are measured using YES NO 1 YES YES verification. Survey and several detectors including gas Walkdown for DCE proportional counters impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 35 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

NIST Recommends this User Contamination Check Room room for scoping for Counting lab for Source Users to classification and 245 H221 YES NO 3 YES NO perform post-experimental verification. Survey and contamination checks Walkdown for DCE impact/cost.

Ionization Chambers Walkdown for DCE 245 H223 YES NO 2 YES NO Measure sources in ion chambers impact/cost.

Source Storage Walkdown for DCE 245 H225 Long-term storage of radioactive YES NO 2 YES NO impact/cost.

materials and general group use High-Medium Level Nuclear Medicine Research Walkdown for DCE 245 H227 YES NO 1 YES NO Source preparation, dilution, and impact/cost.

storage High-Medium Level SRM NIST Recommends this Production room for scoping for Preparation of radioactive classification and 245 H229 YES NO 1 YES YES solutions with dilutions and verification. Survey and dispensing, preparation of Walkdown for DCE counting sources, and storage impact/cost.

NIST Recommends this Low Level Radiochemistry PT room for scoping for Prep classification and 245 H233 Performance testing, materials YES NO 1 YES YES verification. Survey and preparation, homogenization, and Walkdown for DCE dilutions impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 36 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Mass Spectrometry Analysis of radionuclides and Walkdown for DCE 245 H237-1 stable nuclides in samples YES NO 2 YES NO impact/cost.

prepared elsewhere by mass spectrometry, micro-XRF Mass Spectrometry Class 10,000 Clean Room Walkdown for DCE 245 H237-3 Sample preparation including YES NO 1 YES NO impact/cost.

dilution, dissolution, and purification/ chemical separations Mass Spectrometry Class 100 Clean Room Walkdown for DCE 245 H237-5 YES NO 3 YES NO Trace & ultra trace environmental impact/cost.

sample preparation Mass Spectrometry Balance Walkdown for DCE 245 H237-6 YES NO 2 YES NO Sample weighing impact/cost.

Low Level Radiochemistry Clean Room - Sample Prep Radioanalytical work for Walkdown for DCE 245 H247-1 radionuclides separations from YES NO 2 YES NO impact/cost.

low-level radioactivity samples, and source preparation for radioactivity measurements Low Level Radiochemistry Clean Room - Fusion Walkdown for DCE 245 H247-2 Samples drying, ashing, and YES NO 2 YES NO impact/cost.

fusion. Labware storage and cleaning.

Pent. Walkdown for DCE 245 Penthouse / Fan Room, H-Wing YES NO 1 YES NO H-Wing impact/cost.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 37 of 41 Scoping Room Historical Radioactive Material Use SNM-362 In 2009 Impact Survey Bldg. Class1 Conclusions (aka) / Notes Lic. DCE to DCE Recommended (YES/NO)

Co-60 Pool irradiator, Cs-137 Walkdown for DCE 245 F101 YES YES 3 YES NO sealed impact/cost.

NIST Recommends this room for scoping for G-104, Horizontal Smokestack classification and 245 G104 Simulator (This room surrounds YES NO 2 YES NO verification. Survey and G-105)Accelerator Storage Walkdown for DCE impact/cost.

NIST Recommends this room for scoping for classification and 245 YES NO 1 YES NO G105 verification. Survey and G-105 has known activation from Walkdown for DCE linear Accelerator. impact/cost.

Notes:

1 This is NUREG 1575 Class (MARSSIM) for Impacted Rooms.

2 Decommissioning Survey Performed by ATL and NIST license release complete.

New room number previously used in HAPPY

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 38 of 41

7. CONCLUSION The Historical Site Assessment performed by the ReNuke Services Team during the last quarter of 2022 and 1st quarter of 2023, for buildings of the NIST facility: 101, 202, 205, 208, 217, 218, 220, 221, 222, 223, 224, 226, 227, 245, 301, 303, and 423 resulted in the following:

NOTE: The following numbers are rough estimates due to grouping of rooms, duplicate room numbers and room number changes. These figures give an approximate for means of reference.

In total (323) rooms were evaluated in this HSA Investigation. A total of (183) of those rooms evaluated were found to have an impact on the current DCE.

  • The last DCE completed by Philotechnics contained (155) Impacted rooms. (Note -

Some of these were duplicates (due to Room Numbering issues) o Our current findings concluded that (80) Rooms from the 2009 DCE no longer have any impact on the DCE.

o (75) Rooms from the 2009 DCE remain an impact to the current DCE.

o Since the 2009 DCE, (40) rooms originally impacting the DCE, were released for unrestricted use in accordance with the clearance levels in Table 4 in the NIST License Renewal Application and removed from the SNM-362 License.

o (40) Rooms previously on the DCE were found to no longer have an impact.

  • An additional (168) Rooms not included in the 2009 DCE were evaluated and resulted in (108) additional rooms impacting the DCE.

o The H Wing Addition in building 245 added (47) new rooms to the DCE.

o (61) additional rooms were added for various reasons.

7.1 DQO RESULTS DQO 1 - Identifying licensed buildings/rooms.

Results - There are 16 Buildings making up a total of 183 impacted Rooms under license SNM-0362. 101, 202, 205, 208, 217, 218, 220, 221, 223, 224, 226, 227, 245, 301, 303, and 423.

DQO 2 - Differentiate impacted from non-impacted areas.

Results - There are 183 Impacted Rooms under license SNM-0362.

DQO 3 - Evaluate the likelihood of residual radioactivity migration, Results - Radioactive material migration was restricted to designed features of the laboratories and room Ventilation and Drainage systems. No new or unplanned radioactivity migration is identified in this HSA.

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 39 of 41 DQO 4 - Identify which licensed buildings/rooms require further radiological investigation and provide information useful for scoping surveys needed due to lack of information.

Results - There are 22 Rooms requiring scoping surveys and those rooms can be found on the NIST-TR-23-002 Scoping Report.

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 40 of 41

8. REFERENCES
1. NRC Regulations 10 CFR 20 Subpart E.
2. NRC Regulatory Guide 1.86, Termination of Operating Licenses for Nuclear Reactors.

Acceptable Surface Contamination Levels.

3. NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM).
4. NUREG-1505, A Nonparametric Statistical Methodology for the Design and Analysis of Final Decommissioning Surveys.
5. NUREG-1507, Minimum Detectable Concentrations with Typical Radiation Survey Instruments for Various Contaminants and Field Conditions.
6. NUREG-1757, Volume 1 Consolidated NMSS Decommissioning Guidance, Appendix B.
7. NUREG-1757, Volume 2 Consolidated NMSS Decommissioning Guidance.
8. NIST, Decommissioning Funding Plan for License No. SNM-0362, September 2016.
9. NIST SNM-362 Amendment 11 License, July 2022 NIST Historical Site Assessment Specific Documents N1. Healthy Physics Database (HAPPY) Outbuildings Export, November 2022, email from C. Young to P. Jones.

N2. Health Physics Database (HAPPY) DFP Export for Radiological Facilities, November 2022, email from C.Young to P.Jones.

N3. Healthy Physics Database (HAPPY) Radionuclide List by Room Export, November 2022, email from C. Young to P. Jones.

N4. Results of Radiological Evaluation of Soil Adjacent to NIST Building 245 D Wing Foundations, June 2018. New D wing documents provided by C. Young.

N6. Healthy Physics Database (HAPPY) DFP export for new Radiological Facilities, January 2023, email from C. Young to P. Jones.

N7. Current Radiological Waste Inventory, January 2023, email from C. Young to P. Jones.

N8. Results of Radiological Evaluation of Soil Adjacent to NIST Building 245 B Wing Foundations, June 2018.

N9. NIST Radiological Routine Surveys (weekly, monthly, and annual), October 2022.

N10. RSIMS Database export of current sources onsite, November 2022, email from C. Young to P. Jones, November 2022.

N12. NIST Safety Evaluation Report for Special Nuclear Materials License SNM-362 Renewal Application, July 2013.

N13. ATL surveys including index.

N14. NIST Incident Reports, November 2023.

N15. NIST HSA Interviews 2023

License No. SNM-362:NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Page 41 of 41 N16. Final Report-Confirmatory Radiological Survey of Rooms B-118 and A344-National Institute of Standards and Technology - Gaithersburg, Maryland, January 1991

License No. SNM-362: Historical Site Assessment: NIST-TR-23-001, NIST Historical NIST Historical Site Assessment Site Assessment Revision: A Appendix Appendix A Building Maps

License No. SNM-362: NIST-TR-23-001, NIST Historical Site Assessment NIST Historical Site Assessment Revision: A Appendix Appendix B HSA Investigation List for All Rooms

NIST-TR-23-001 Historical Site Assessment Final Audit Report 2023-04-25 Created: 2023-04-25 By: Ryan Larochelle (ryan@renuke.com)

Status: Signed Transaction ID: CBJCHBCAABAAS9EvKUlshtb_ClBqdkL5-_ROUS8ZBtz_

"NIST-TR-23-001 Historical Site Assessment" History Document created by Ryan Larochelle (ryan@renuke.com) 2023-04 6:30:52 PM GMT Document emailed to paul.a.jones@perma-fix.com for signature 2023-04 6:32:08 PM GMT Email viewed by paul.a.jones@perma-fix.com 2023-04 7:32:16 PM GMT Signer paul.a.jones@perma-fix.com entered name at signing as Paul Jones 2023-04 7:32:45 PM GMT Document e-signed by Paul Jones (paul.a.jones@perma-fix.com)

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