ZS-2015-0078, Response to License Termination Plan Request for Additional Information, Including Revision 0 to Tsd 14-022, Use of In-Situ Gamma Spectroscopy for Source Term Survey of End State Structures

Response to License Termination Plan Request for Additional Information, Including Revision 0 to Tsd 14-022, Use of In-Situ Gamma Spectroscopy for Source Term Survey of End State Structures

ML15152A157
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	05/27/2015
From:	David Williams ZionSolutions
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
ZS-2015-0078 TSD 14-022, Rev. 0
Download: ML15152A157 (95)

Text

ZIONSOLUTIONSUC An.Ewrg*,WSt CoW,"

10 CFR 50.4(b)(1)

May 27, 2015 ZS-2015-0078 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Zion Nuclear Power Station, Units I and 2 Facility Operating License Nos. DPR-39 and DPR-48 NRC Docket Nos. 50-295 and 50-304

Subject:

License Termination Plan Request for Additional Information

References:

1) Gerard van Noordennen, ZionSolutions, Letter to U.S. Nuclear Regulatory Commission, "License Amendment Request for the License Termination Plan", dated December 19, 2014

2) Gerard van Noordennen, ZionSolutions, Letter to U.S. Nuclear Regulatory Commission, "License Termination Plan Update of the Site-Specific Decommissioning Costs", dated February 26, 2015

3) Gerard van Noordennen, ZionSolutions, Letter to U.S. Nuclear Regulatory Commission, "License Termination Plan Request for Additional Information", dated April 29, 2015 The Zion Station License Termination Plan (LTP) was submitted to the U.S Nuclear Regulatory Commission (NRC) for review on December 19, 2014 as documented in Reference 1. Following initial NRC review, an e-mail Request for Additional Information (RAI) was received on April 8, 2015 requesting the following information in support of the technical review process:

• Energy Services Commercial Services Group Report CS-RS-PN-028, "Background Reference Area Report - Zion Nuclear Power Station", - February 2012.

• Technical Support Document (TSD) describing the use of ISOCS.

• ZionSolutions Technical Support Document 14-003, Conestoga Rovers & Associates (CRA) Report, "Zion Hydrogeologic Investigation Report," Including all hydrogeologic investigation reports or documentation completed by Conestoga-Rovers & Associates (CRA), Exelon, and ZionSolutions from August 2006 through September 2013, used to develop TSD 14-003.

" Conestoga-Rovers and Associates, "Hydrogeologic Investigation Report, Fleetwide Assessment, Zion Station, Zion Illinois", Revision 1 - September 2006.

101 Shiloh Boulevard, Zion

• IL60099 (224) 789-4016

• Fax: (224) 789-4008

• www.zionsolutionscompany.com

ZionSolutions, LLC ZS-2015-0078 Page 2 of 2 The requested information, with the exception of the TSD describing the use of ISOCS, was previously submitted as documented in Attachment 3. The TSD describing the use of ISOCS is included in the enclosure sent with this correspondence.

There are no regulatory commitments made in this submittal. If you should have any questions regarding this submittal, please contact Robert Yetter at (224) 789-4250.

Respectfully, Donald E. Williams, Jr.

VP Radiological and Environmental Controls

Enclosure:

Technical Support Document (TSD) describing the use of ISOCS.

cc: John Hickman, U.S. NRC Senior Project Manager (2 copies of the enclosure)

Regional Administrator, U.S. NRC, Region III (1 copy of the enclosure)

Service List (Cover letter only, no enclosures)

Ken Robuck Russ Workman President Logistics Processing and General Counsel Disposal Group EnergySolutions EnergySolutions 423 West 300 South, Suite 200 423 West 300 South, Suite 200 Salt Lake City, UT 84101 Salt lake City, UT 84101 Alwyn C. Settles John Sauger Section Head, Nuclear Facility Inspection Executive VP & General Manager Bureau of Nuclear Facility Safety ZionSolutions, LLC Illinois Emergency Management Agency 101 Shiloh Boulevard 1011 North Street, PO Box 250 Zion, IL 60099 Mazon, IL 60444 Gerard van Noordennen Kelly F. Grahn VP Regulatory Affairs Senior Health Physicist, Unit Supervisor ZionSolutions, LLC Low Level Radioactive Waste and Site 101 Shiloh Boulevard Decommissioning Zion, IL 60099 Illinois Emergency Management Agency Bureau of Radiation Safety, Environmental Management Anthony Orawiec 245 W Roosevelt Road, Building 8, Suite 55 Decommissioning Plant Manager West Chicago, IL 60185 ZionSolutions, LLC 101 Shiloh Boulevard Kent McKenzie Zion, IL 60099 Emergency Management Coordinator Lake County Emergency Management Agency Dan Shrum 1303 N. Milwaukee Avenue Senior VP Regulatory Affairs Libertyville, IL 60048-1308 EnergySolutions 423 West 300 South, Suite 200 John E. Matthews Salt Lake City, UT 84101 Morgan, Lewis & Bockius LLP 1111 Pennsylvania Avenue, NW Washington, DC 20004

ZionSolutions, Inc.

Technical Support Document ZIONSOLUTIONSLLc A.E-WSOkd*O. aM TSD 14-022 Use of In-Situ Gamma Spectroscopy for Source Term Survey of End State Structures Revision 0 Originator: A; ý Date: 5/26/2015 Harvey Farr /

I2 Reviewer

Date: 5/26/2015 David Fauver Approval\ Date: __7/ ,_____

Robert4'er Page 1 of 92

TSD 14-022 Revision 0 Summary of Changes in this Revision:

0 Rev. 0 -Initial issuance.

Page 2 of 92

TSD 14-022 Revision 0 Table of Contents P U R PO S E ............................................................................................................................... 5

2. D IS C U S S IO N ......................................................................................................................... 5 2.1. Application of ISOCS in Source Tenn Survey ................................................................ 5 2.2. Source Term Geometry for ISOCS Efficiency Calibration ............................................. 6 2.3. ISOCS Geometry Composer Software: Circular Plane Geometry and Exponential Circular Plane Geometry ............................................................................. 7 2.4. Determination of Depth Relaxation Lengths (DRLs) from Concrete Core Data ...... 11

3. ISOCS EFFICIENCY CALCULATION ........................................................................ 13 3.1. Auxiliary Building Basement Floor and Lower 1 m of Wall ........................................ 13 3.2. Auxiliary Floor Concrete Source Term and Density .................................................... 20 3.3. ISOCS Composite Exponential Circular Plane Efficiency and Individual Core Circular Plane Efficiencies ................................................................................... 21 3.4. Comparison of Total Activity Estimate Using Composite and Individual C ore E ffi ciencies ............................................................................................................... 23 3.5.

Conclusion:

Geometry Template for Auxiliary Basement Floor ................................. 27 3.6. A uxiliary Basem ent W alls ............................................................................................. 27 3.7. C ontainm ent B asem ent ................................................................................................. 28 3.8. Turbine B asem ent ........................................................................................................ 29 3.9. Crib House, Forebay, and Circulating Water Intake Pipes ........................................... 30 3.10. Fuel Pool and Fuel Transfer Canal ............................................................................... 31 3.11. Waste Water Treatment Facility (WWTF) ................................................................... 31 3.12. Circulating Water Discharge Tunnels .......................................................................... 31

4. ISOCS EFFICIENCY UNCERTAINTY ANALYSIS .................................................... 31

5. SENSITIVITY TO NON-UNIFORM AREAL DISTRIBUITON .................................. 32

6. MINIMUM DETECTABLE CONCENTRATIONS OF CP AND ECP MODELS ..... 35

7. C O N C L U SION ..................................................................................................................... 36

8. R E FE R E N C E S ..................................................................................................................... 36

9. A T T AC H M EN T S ................................................................................................................. 38 9.1. Attachment 1 -Auxiliary Building Cs-137 Depth Profiles ........................................... 38 9.2. Attachment 2 -Circular Plane and Exponential Circular Plane Efficiency C om parison R eports ...................................................................................................... 38 9.3. Attachment 3 - Map of Auxiliary Building Floor and Wall Concrete C ore L ocations ................................................................................................................... 38 9.4. Attachment 4 - Areal Distribution Input and Results Reports ...................................... 38 9.5. Attachment 5 - Sensitivity to Density, Depth, and DRL Input and Output ................... 38 9.6. Attachment 6 - Minimum Detectable Concentrations ................................................. 38 Page 3 of 92

TSD 14-022 Revision 0 List of Tables Table I - Auxiliary Building In-House Gamma Spectroscopy Cs-137 Core Results Decay C orrected to January 1, 2013 ............................................................................................... 14 Table 2 - Auxiliary Basement Activity Depth Profile and Source Term Using Overall A verage of A ll 17 C ores ...................................................................................................... 16 Table 3 - Comparison of Overall, Trend Line Overall and Interpolated DRL Source Terms ............ 19 Table 4 - Auxiliary Building Floor Concrete Densities ...................................................................... 21 Table 5 - Summary of ECP and CP Efficiencies at Specified Energies ............................................. 22 Table 6 - Comparison of Average and Individual Core Efficiency Values and Effect on Total Activity Estimate in Auxiliary Basement Floor ...................................................... 26 Table 7 - Projection of Total Cs-137 Activity in Auxiliary Basement Using Average EC P Efficiency (N ote 1) ................................................................................................... 27 Table 8 - Auxiliary Building Wall Core Cs- 137 Results .................................................................... 27 Table 9 - Potential Containment Liner Corrosion Thicknesses Under Atmospheric and M arine C onditions .................................................................................................................. 29 Table 10 - Summary of Turbine Building and Main Steam Tunnel Cores ........................................ 29 Table 1I - ECP Model Sensitivity for Density, Depth, and DRL ...................................................... 32 Table 12 - Areal Distribution Efficiency Results ............................................................................... 34 Table 13 - Comparison of ECP and CP Model MDCs to Basement Fill Model Limits ..................... 36 List of Figures Figure 1 - 90 Degree Collimator Field of View (FOV) ........................................................................ 7 Figure 2 - ISOCS Calibration Software Circular Plane Template ...................................................... 8 Figure 3 - ISOCS Calibration Software Exponential Circular Plane Template ................................... 9 Figure 4 - Exponential Circular Plane Input Parameters .................................................................... 10 Figure 5 - Composite Depth Distribution Overall, Trend Lines, and Calculated from Interp olated DR L .................................................................................................................. 18 Figure 6 - Cumulative Activity Distributions for Composite and 2.3 cm DRL ................................. 20 Figure 7 - Areal Distribution Model Illustration ............................................................................... 33 Page 4 of 92

TSD 14-022 Revision 0

1. PURPOSE The primary purpose of this TSD is to describe the efficiency calibration methods and results for the use of in-situ gamma spectroscopy to perform the Source Term Surveys (STS) of the Zion Station Restoration Project (ZSRP) end state structure basements. This TSD also provides a general description of the in-situ gamma spectroscopy system application during STS including nominal minimum detectable concentration (MDC) values.

As described in the ZSRP License Termination Plan (LTP), (1) the objective of the STS is to determine the total activity remaining in each end state structure at the time of license termination.

The Canberra In-Situ Object Counting System (ISOCS) gamma spectroscopy instrumentation will be used. The source term geometry in concrete (and remaining steel liner in the case of the Containment basement) and the corresponding efficiency calibration for the ISOCS measurements are described for each structure. The efficiency calibrations apply to the expected general condition of the structures after remediation and will be used during STS design. However, the efficiency calibrations may be modified during STS design as necessary, using the general approach and methods described in this TSD, if the actual post-remediation conditions of the structures are significantly different than assumed.

The efficiency calibrations are intended to be conservative. If the STS results are such that a reduction in conservatism is deemed necessary for a given measurement or survey unit, additional characterization or data analysis may be performed to refine the efficiency calibration.

The efficiency calibrations assume a uniform areal distribution of residual radioactivity. The effects of non-uniform areal distributions are also evaluated to ensure that a conservative estimate of total activity inventory is generated for a reasonable range of distributions.

Finally, this TSD identifies areas where additional characterization or information is required to sufficiently define the source term geometry. The ISOCS efficiencies will be determined for these areas after the additional data is available.

2. DISCUSSION 2.1. Application of ISOCS in Source Term Survey As described in Zion LTP Chapter 6, the total activity inventory in each basement is the metric that will be used to demonstrate compliance with the 25 mrem/yr dose criteria in 10 CFR 20.1402. The total activity is the source term input for the Basement Fill Dose Model (BFM) and activity values that correspond to 25 mrem/yr are provided in Table 5-9 of the LTP. (1) Note that the BFM source term is total activity only which is independent of radionuclide concentrations.

Consistent with the graded approach recommended in the Multi Agency Radiation Survey and Site Investigation Manual (MARSSIM) (2), the number of ISOCS measurements in each basement is a function of the potential for residual radioactivity to be present (see LTP Chapter 5). The Auxiliary Basement floor and portions of the Fuel Pool/Transfer Tunnels to remain are known to be contaminated. ISOCS measurements will be performed over 100% of these surfaces. The number of measurements in the other basements represents less than 100% coverage of the surfaces depending on contamination potential. For survey planning purposes and the assessments provided in this TSD, the assumed configuration of the ISOCS system during STS is a three meter distance from the surface to be measured with a 90 degree, 50 mm lead collimator. This results in a 28.3 m 2 field of Page 5 of 92

TSD 14-022 Revision 0 view (FOV). This configuration may be changed as necessary depending on actual conditions encountered during STS.

2.2. Source Term Geometry for ISOCS Efficiency Calibration The source term geometry, i.e., concentration depth profile and areal distribution of the residual radioactivity in structures, is required to generate efficiency curves (i.e., efficiency as a function of energy) for the ISOCS gamma spectroscopy measurements. The concrete cores obtained during characterization, as described in LTP Chapter 2 (1), provide information regarding the distribution of activity with depth for each structure. The areal distribution is assumed to be uniform for the efficiency calibration. The effect of non-unifonn areal distribution is evaluated separately in Section 5.

The basement structures that will remain at license termination include:

• Unit 1 & 2 Containment Buildings,

" Auxiliary Building,

" Spent Fuel Pool (SFP) and the Fuel Transfer Canal,

• Crib House and Forebay,

• Turbine Building, Steam Tunnels, Circulating Water Intake Pipe and Circulating Water Discharge Tunnels, and

" Waste Water Treatment Facility (WWTF).

The characterization data is documented in LTP Chapter 2 and analyzed in the following TSDs:

• TSD 13-005, Unit I & 2 Reactor Building Estimated End State Concrete and Liner Volumes and Surface Areas (3),

• TSD 13-006, Reactor Building Units I and 2 End State Concrete and Liner Initial Characterization Source Terms and Distributions (4),

" TSD 14-013, Zion Auxiliary Building End State Estimated Concrete Volumes, Surface Areas, and Source Terms (5), and

• TSD 14-014, End State Surface Areas, Volumes, and Source Terms of Ancillary Buildings (6).

Several structures were in use during characterization including the SFP, Transfer Canal, Unit 2 Discharge Tunnel and WWTF and were therefore not surveyed. The Forebay and Circulating Water Intake Pipe are submerged and were not characterized but the concrete in these structures have very low potential of containing contamination. Conservative assumptions regarding the source term distribution, and corresponding ISOCS efficiency calibration, in these structures can be made based on the results of cores collected in the Crib House without additional characterization. The Spent Fuel Pool, Transfer Canal, WWTF and Unit 2 Discharge Tunnel will be characterized when access is available and the resulting data used to develop the source term geometry and corresponding ISOCS efficiency calibration using the methods outlined in this TSD.

There was no detectable activity in the Crib House cores and no contamination is expected in the Forebay (6) or Circulating Water Intake Pipes. Cores from the Turbine Building and Steam Page 6 of 92

TSD 14-022 Revision 0 Tunnels exhibited very low levels of Cs-137 in the first half inch of some of the cores (6) with locations very localized. (6) Minimal activity was found below the first half inch.

The steel liner walls in the containments extend from the 588 foot elevation to the basement floor at the 568 foot elevation with no interior concrete (3). The In-Core area consists of the area directly below the reactor vessel and an access tunnel. All have walls and floors with the access tunnel also having a concrete ceiling. The concrete wall and floor below the vessel is neutron activated. (4) As noted in Chapter 5 of the LTP, current plans are to remove all concrete inside the liners in both Containments. The source term geometry for the containment basements will therefore be a thin layer of surface contamination on the remaining steel liners. In the event that some concrete is left inside the liner in either Containment at the 568 foot elevation floors or the In-Core areas under the vessel, core data is available to develop concentration profiles at depth and corresponding ISOCS efficiency calibration (4).

A total of seventeen cores were collected from biased locations in the Auxiliary Building Basement 542 foot elevation and are sufficient to determine the concentration profiles at depth and to develop a conservative ISOCS efficiency calibration for the Auxiliary Basement.

2.3. ISOCS Geometry Composer Software: Circular Plane Geometry and Exponential Circular Plane Geometry The ISOCS Geometry Composer Software contains a number of geometry templates that allow physical parameters to be varied to determine efficiency curves for a variety of source term geometries. The Exponential Circular Plane (ECP) and Circular Plane (CP) templates, as applicable, were used to develop efficiency curves for the ISOCS measurements in basement structures. The general circular plane geometry is shown in Figure 1.

Figure 1 - 90 Degree Collimator Field of View (FOV)

The CP Template allows the radioactivity to be distributed in any manner in up to ten layers of sources/ absorbers (i.e., Items 2 through II in Figure 2). Item 1.1, wall thickness, is set to zero for end state floors and walls. Item 1.2 is the circular plane diameter which will typically be set to 6.0 meters when the source to detector distance is set to 3.0 meters (Item 4.1).

Page 7 of 92

TSD 14-022 Revision 0 DescdtAion:

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Units: ro mm r cm r m r in Ct 7 -1La

~ I 0 j 05---- - -- -0 0._00 4j Layer 3 [ o [_ ____- j_ _ -

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T[I Layer 4 j -5 1 1 1 F____ HJ -5__5-5 T[ý I La-er65~-F ___-F- - __:Y _ _06__

7r1 Gw gr- r - -- 3 5 5 5- a 9___ r___ r5-r-r--__ 5 _505__

Laye_____r ____ - r -- __ - - - -5__ 5__

7331 Absorber2F_ 0 [___ ___1II !Z i 14 source-Detector 0 0 0 0 0 -_1 Figure 2 - ISOCS Calibration Software Circular Plane Template The ISOCS ECP template is similar to the CP template but the distribution of radioactivity with depth in the ECP template is defined by a single exponential function as opposed to 10 layers of user input concentrations in the CP template. As seen in Figure 3 and Figure 4 the ECP template allows source concentrations to be distributed such that they first increase in concentration with depth, to a depth at which the maximum concentration occurs, and then decrease in concentration.

This "increase then decrease" distribution is often encountered in soils as surface contamination migrates through the soil column. It is also a typical distribution for activated concrete as was seen in the ZSRP Containment In-Core areas. (4) However, the ECP is fully applicable to profiles in which the maximum concentration is at the surface and concentration falls off in an exponential fashion which is the distribution generally expected for contaminated concrete. As discussed in Page 8 of 92

TSD 14-022 Revision 0 detail below, the Auxiliary Building cores confirm the exponential decrease of concentration with depth.

1.1 C

4-I- e. 2W"o LMtr W*WW"m (MI)

I C)

C 0

U I,

I

- T I Depth Exponential Circular Plane Figure 3 - ISOCS Calibration Software Exponential Circular Plane Template Page 9 of 92

TSD 14-022 Revision 0 urar.m e rm rin rf Row 1, d.l Container side wall thickness Row 1, d.2 Diameter of the source Rows 2 to 4, d.1 Thickness of absorber layers Row 5, d.1 Thickness of source layer Row 5, d.2 Dth at which maximum activity concentration occurs (Dmax)

Row 5, d.3 Relaxation length for the exponential distribution, DRL, the depth at which the activity concentration falls by a factor of lI/e of its value at Dmax Row 5, AO Relative source concentration at zero depth (A1o), 0 < Ao 4 < 1 Rows 6 and 7 describe any absorber layers that may be between the detector and the source, and Row 8 describes the position and angle between the detector and source, just as in all other ISOCS templates.

Figure 4 - Exponential Circular Plane Input Parameters The basic input parameters that are applicable to both the ECP and CP are;

• Source to Detector Distance

" Side wall thickness which is set to zero for floors and walls.

" Material Density

• Diameter of the source which equals the field of view based on distance from the floor or wall.

• Thickness of absorber layers.

• Thickness of source layer(s).

" Depth at which maximum activity concentration occurs (Cmax) for the ECP.

Characterization data indicates that this should be set to zero at ZSRP unless assaying activated concrete. Using the Circular Plane the Relative Concentration for each layer is entered. For the cores, the concentration (pCi/g) of each core layer segment was entered.

Page 10 of 92

TSD 14-022 Revision 0 The source term definition differs for ECP and CP. For CP, actual (or extrapolated) concentrations are entered into a maximum of 10 layers with user defined layer thicknesses. There is no requirement that the source term fit a given function with depth. For the ECP, the source term is defined as an exponential function that is continuous from the surface to a user defined depth. Three input parameters are needed to define the source term distribution in the ECP template

" Concentration at zero depth (Ao).

• Depth Relaxation Length (DRL) for the exponential distribution. This is the depth at which the activity concentration falls by a factor of l/e of its value at Cax. Where e is Euler's number 2.71828, the base of natural logarithms such that l/e equals 0.368. The equation is described on page 9-8 of the Advanced ISOCS Measurement Training Course (7)

• Depth of contamination Contamination depth profiles vary in the end state concrete as described in TSD 13-006 (4), TSD 14-013, and TSD 14-014 which provide the results of core samples from Containment, Auxiliary Building (5), and Turbine Building (6), respectively. The core depth profiles and other information regarding post-remediation source term geometry are used to develop ISOCS efficiency calibration files for each building. The ECP template is most applicable to areas with significant concrete contamination at various depths such as the Auxiliary Building basement. The ECP may also be the best template to use for the Fuel Pool/Transfer Canals but this will not be determined until characterization in these areas is completed. The CP template is applied to the remaining basements which contain low levels of contamination that are limited to a near surface layer. This source term geometry can be conservatively modeled by a single uniformly contaminated source term layer from the surface to a given depth (assumed to be 1/22 inch to correspond to the core sample slice thickness and maximum contamination depth expected).

2.4. Determination of Depth Relaxation Lengths (DRLs) from Concrete Core Data The ISOCS software uses the term Depth Relaxation Length (DRL) in place of the standard rate constant term, i.e., k. This section describes the derivation of the DRL value and how the DRL is calculated when core data is curve fitted and a Xvalue generated.

The radionuclide concentration at the DRL is defined by Equation 1. From Equation I it is seen that concentration at the DRL depth (CDRL) is the depth at which the concentration is equal to 0.368 of the maximum concentration (Cmax), i.e., CDRL = 0.368 Cmax.

Equation 1 - Concentration CDRL at Depth Relaxation Length (DRL) (7)

CRL = [l/)--27 = 0.368] Cmax

=2.7183 .

Page 11 of 92

TSD 14-022 Revision 0 The ECP template uses the DRL as an alternative expression of the rate constant (k) in the basic exponential function shown in Equation 2.

Equation 2- Exponential Function A = Aoe-;txcm Where:

A = Activity at depth X A0 = Activity at depth 0

= rate constant X = depth in cm The conversion of k to DRL is performed as follows. By definition, A/A 0 = 0.368 when X equals the DRL. Substituting and taking the natural log of both sides, results in the Equation 3:

Equation 3 - Exponential Function When A/AO = 0.368 ln(O.368) = - IDRL cm = -1 Therefore, 1

DRL cm This confirms the equation on page 3-34 of the Advanced ISOCS Measurement Training Course (7) which is copied as Equation 4 below. Note that the ISOCS formula nomenclature uses L as term for DRL. As seen in Equation 4 form, if X = L (i.e., DRL), then -X/L = -1. Then A/A 0 = e-' = 0.368.

Equation 4 - ISOCS Exponential Circular Plane Equation A = Aoe-X/L Where A = 0.368*Cmax Ao = Cmax L =DRL X = depth in cm Equation 3 is used in this TSD to convert, when necessary, the k,value generated by curve fitting exponential functions to core data to the DRL value used in the ISOCS ECP template.

Page 12 of 92

TSD 14-022 Revision 0

3. ISOCS EFFICIENCY CALCULATION 3.1. Auxiliary Building Basement Floor and Lower 1 m of Wall The Auxiliary Building floor is likely to contain the majority of the end state source term and be the bounding source term for compliance with the 25 mrem/yr dose criterion. The Auxiliary Building concentration profile with depth has been determined using the core data documented in TSD 14-013 (5). The ECP template is used to develop the ISOCS efficiency calibration for the Auxiliary basement floor.

TSD 14-019 (8) evaluated the concrete core data from the Auxiliary Building and refined the initial suite of potential radionuclides of concern (ROC) (9) by evaluating the dose significance of each radionuclide. This analysis determined that Co-60, Ni-63, Sr-90, Cs-134 and Cs-137 accounted for 99.5% of all dose in the Auxiliary Basement contaminated concrete mix. (8) Cs-137 is the predominant radionuclide.

After systems and components are removed, areas above 2 mrem/hr contact will be remediated to meet open air demolition limits (10). The STS will then be conducted in accordance with Chapter 5 of the LTP (1) to demonstrate that the total inventory of residual radioactivity in building basements, embedded piping and penetrations is below a total source term inventory commensurate with the 25 mrem/yr dose criterion (11). ISOCS will be used to perform the STS of end state structures.

Seventeen concrete cores were collected during the characterization of the Auxiliary Building. (5)

As noted in TSD 14-019 (8) Cs-137 accounts for 75% of the end state source term in the Auxiliary Building while Co-60 only accounts for 1.6% of the source term. In addition, Cs-137 is more mobile than Co-60 and expected to penetrate to a deeper depth on the concrete. Therefore, the evaluation of contamination with depth is performed with the Cs-137 results and assumed to apply to all ROC. Hard-to-Detect fission product radionuclides such as Sr-90 may be surrogated to Cs-137. Activation nuclides such as Ni-63 may be surrogated to Co-60 as appropriate.

As seen in Table 1, the Cs- 137 maximum concentration (Cmax) was in the first half inch for all 17 cores. The depth at which detectable activity was found varies from 0.5 to 14 inches. The results for five of the cores (B 105103-CJFCCV-00 1, B 105105-CJFCCV-00 1, B 105106-CJFCCV-00 1, B 105108-CJFCCV-00 1, and B 105111 -CJFCCV-00 1) indicated that detectable contamination was present at depths greater than the deepest core section counted. The deeper concentrations were estimated by extrapolation and included in the evaluation to account for all of the potential source term. As seen in Attachment 1, the depth profile of each core was graphed and fit to an exponential equation using Excel. The concentrations below the last core section were extrapolated using the trend line equation on the Attachment I graphs. The calculated values are shown in red in Table 1.

Page 13 of 92

TSD 14-022 Revision. 0 Table 1 - Auxiliary B ildingIn-HouseGammaSpectroscopy Cs-137 Core Results Decay Corrected to January 1, 2013.

Aux 542 Aux 542 Aux 542 Aux 542 U2 Aux 542 U2 Aux 542 Common Common Common Aux 542 1 Aux 542 2 Aux 542 2B Aux 542 UI Hot Pipe Hot Pipe Aux 542 Common Central Central Elevator Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 U1 Aux 542 U1 Location MR Pump HR Pum RHR Pipe Tunn Chase Chase HUT Area Area Area Shaft South Area North Area North Area East Area ABEDCT ABEDCT Bi05101- B105103- B105104- B105105- B105106- B105106- B105107- B105108- B105108- B105108- B105108- B105109- BI05110- B105110- B105111- B105113- B105113-Sample CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV-ID 001 001 001 001 001 002 001 001 002 003 004 001 001 002 001 001 002 Depth Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 cm pCi/g pCi/g pOig pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g 0.635 3198.7 22926.4 7.1 9598.7 2506.9 2142.2 89.5 1885.0 87.9 1215.0 111.9 1022.6 1563.4 44.0 954.9 4119.1 1595.2 1.905 654.4 12882.2 0.2 7392.5 2091.6 0.3 1.5 543.7 19.4 4.3 0.1 0.3 0.5 0.2 322.7 165.2 354.1 3.175 492.3 6161.9 1653.7 2027.3 1.0 143.5 8.0 1.0 0.2 122.0 39.9 229.2 4.445 231.7 2507.9 1869.0 1087.8 1.1 62.4 15.0 0.4 0.1 260.3 8.0 95.1 5.715 128.8 2023.0 2153.0 416.3 1.5 55.9 20.7 0.2 91.6 1.1 65.4 6.985 118.5 1347.0 1438.8 528.6 1.1 30.0 7.8 56.1 1.0 18.1 8.255 14.3 363.0 1203.9 819.3 0.9 16.9 2.8 28.9 0.9 6.0 9.525 4.9 221.4 1830.5 570.1 0.7 32.4 0.8 19.2 0.4 1.4 10.795 3.4 123.2 712.1 180.1 0.7 15.2 11.5 0.2 0.2 12.065 0.4 63.9 1624.9 204.1 0.5 3.6 6.9 0.1 13.335 0.4 33.1 690.5 153.7 0.9 2.0 4.2 0.3 14.605 17.2 563.6 115.8 0.6 1.1 2.5 15.875 8.9 459.9 87.3 1.4 0.6 1.5 17.145 4.6 375.4 65.7 2.8 0.3 0.9 18.415 2.4 306.3 49.5 2.8 0.5 19.685 1.2 250.0 37.3 2.8 0.3 20.955 0.6 204.0 28.1 1.5 22.225 0.3 166.5 21.2 1.8 23.495 0.2 135.9 16.0 1.8 24.765 110.9 12.0 0.6 26.035 90.5 9.1 0.6 27.305 1 73.9 6.8 0.4 28.575 60.3 5.1 0.5 Page 14 of 92

TSD 14-022 Revision 0 Aux 542 Aux 542 Aux 542 Aux 542 U2 Aux 542 U2 Aux 542 Common Common Common Aux 542 1 Aux 542 2A Aux 542 2B Aux 542 U! Hot Pipe Hot Pipe Aux 542 Common Central Central Elevator Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Ut ux 542 UI Location RHR Pum RHR Pum RHR Pipe Tunn Chase Chase HUT Area Area Area Shaft South Area North Area North Area East Area ABEDCT ABEDCT BI05101- B105103- B105104- B105105- B105106- B105106- B105107- B105108- B105108- B105108- B105108- B105109- BI05110- BI05110- B105111- B105113- B105113-Sample CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV-ID 001 001 001 001 001 002 001 001 002 003 004 001 001 002 001 001 002 Depth Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 Cs-137 CM pCilg pCi/g Ci/g pCl/g pCil/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCilg pCi/g pCi/g pCi/g pCi/g pCi/g 29.845 49.2 3.9 0.6 31.115 40.2 2.9 0.7 32.385 32.8 2.2 0.6 1 33.655 26.7 1.7 0.8 34.925 21.8 1.2 0.7 36.195 17.8 0.9 37.465 14.5 0.7 38.735 11.9 0.5 40.005 9.7 0.4 41.275 7.9 0.3 42.545 6.4 0.2 43.815 5.3 45.085 4.3 46.355 3.5 47.625 2.9 48.895 2.3 Total 4847.8 48U88.6 7.3 33221.8 11054.8 2142.5 120.2 2792.4 162.4 1220.8 112.3 1022.9 1563.9 44.1 1884.2 4335.8 2365.0 Note - Bold Italic Results are MDAs, Blank spaces indicate no sample counted. Red results are extrapolated values using Attachment I Trend Line equation. Average is total pCi/g at that depth divided by number of results at that depth.

Page 15 of 92

TSD 14-022 Revision. 0 The most direct method for determining the depth distribution of contamination in the Auxiliary Building was deemed to be the use of average concentrations from all 17 cores. If curve fitting of the average data indicates a good fit to an exponential function an argument could be made that the corresponding DRL could be used in the ECP template and the resulting efficiency calibration file applied to all measurements in the Auxiliary basement. This approach was pursued.

To generate the average data for curve fitting, the average concentration in each 0.5 inch slice was converted to total Ci. The extrapolated concentrations shown in red in Table I were included in the total activity calculations to ensure that all potential activity at depth is accounted for. Note that the average concentration in each slice was conservatively calculated using only the positive results at the respective depths as opposed to including MDC values for cores with non-detectable results at the given depth.

The total Ci in each 0.5inch slice was calculated by multiplying the average activity in a given slice by the total mass in each slice. The total mass was calculated by multiplying the 27,888 square foot surface area of the Auxiliary Building 542 foot elevation floor by a 1/2 inch thickness and assuming a density of 2.4 g/cc. The result was 7.90E+07 grams. The average concentrations and corresponding total Ci in each !/ inch slice is provided in Table 2.

Table 2 - Auxiliary Basement Activit Depth Profile and Source Term Using Overall Average of All 17 Cores All Samples Samples Average Average Depth Depth with for All Source Inches cm Results pCi/g Term Ci 0.25 0.635 17 3121.7 2.47E-01 0.75 1.905 17 1437.2 1.14E-01 1.25 3.175 12 640.0 5.05E-02 1.75 4.445 12 361.1 2.85E-02 2.25 5.715 11 291.6 2.30E-02 2.75 6.985 10 208.6 1.65E-02 3.25 8.255 10 144.5 1.14E-02 3.75 9.525 10 157.7 1.25E-02 4.25 10.795 9 61.6 4.86E-03 4.75 12.065 8 112.0 8.85E-03 5.25 13.335 8 52.1 4.11E-03 5.75 14.605 6 41.2 3.26E-03 6.25 15.875 6 32.9 2.60E-03 6.75 17.145 6 26.5 2.09E-03 7.25 18.415 5 21.3 1.68E-03 7.75 19.685 5 17.2 1.35E-03 8.25 20.955 5 13.8 1.09E-03 8.75 22.225 5 11.2 8.82E-04 9.25 23.495 4 9.0 7.15E-04 9.75 24.765 3 7.3 5.74E-04 Page 16 of 92

TSD 14-022 Revision 0 All Samples Samples Average Average Depth Depth with for All Source Inches cm Results pCi/g Term Ci 10.25 26.035 3 5.9 4.65E-04 10.75 27.305 3 4.8 3.77E-04 11.25 28.575 3 3.9 3.06E-04 11.75 29.845 3 3.2 2.50E-04 12.25 31.115 3 2.6 2.03E-04 12.75 32.385 3 2.1 1.65E-04 13.25 33.655 3 1.7 1.36E-04 13.75 34.925 3 1.4 1.11 E-04 14.25 36.195 2 1.1 8.71E-05 14.75 37.465 2 0.9 7.08E-05 15.25 38.735 2 0.7 5.76E-05 15.75 40.005 2 0.6 4.68E-05 16.25 41.275 2 0.5 3.81E-05 16.75 42.545 2 0.4 3.1OE-05 17.25 43.815 1 0.3 2.44E-05 17.75 45.085 1 0.3 2.OOE-05 18.25 46.355 1 0.2 1.63E-05 18.75 47.625 1 0.2 1.33E-05 19.25 48.895 1 0.1 1.08E-05 Total 5.37E-01 The data in Table 2 is plotted as the green line in Figure 5. Curve fitting was performed in two ways. First, the data was fitted to an exponential function using Excel. Second, the depth at which the activity is reduced to 0.368 Amax was determined graphically from the plotted data and the rate constant for the exponential function was calculated as described in Equation 4 and used to plot the data.

The black overall trend line equation and the black trend line in Figure 5 show the Excel trend line fitted exponential function. The "goodness" of the fit is described by the regression coefficient which is 0.899 in this case. A regression coefficient of one represents a perfect fit and zero represents no correlation. A regression coefficient of 0.899 indicates reasonable fit but visual inspection reveals a number of disparities between the data and the fitted function. As seen on Figure 5, the fit appears very close to actual data at higher concentrations but diverges to some extent at greater depth and lower concentrations. In general, the black trend line is shifted to the right of the actual data (green plot) at mid to lower depths resulting in an overestimate of total activity.

The purple line draws the exponential function assuming a DRL of 2.3 cm (equivalent to X = 1/2.3 cm) which was interpolated from the plotted data as shown in Figure 5. There is no analogy to the regression coefficient for this function but visual inspection confirms a reasonable fit.

Page 17 of 92

TSD 14-022 Revision 0 2.50E-01 -

2.OOE-01 -

1SOE-01 -

LOE0 IV CDRL 0.0907 -

5.0OE-02 O.OOE+OO

-T--

'p4K 4, IV Interpolated DRI Depth an Figure 5 - Composite Depth Distribution Overall, Trend Lines, and Calculated from Interpolated DRL Table 3 calculates the total activity represented by each of the three curves in Figure 5 to a depth of 34.9 cm (i.e., 13.75 inches). As seen in Figure 6, this depth encompasses well over 95% of the activity present in the concrete floor. The calculated Auxiliary Floor total activity based on the 34.9 cm composite profile is 0.537 Ci at a concrete density of 2.40 g/cc. The purple column in Table 3 is the total activity from the interpolated DRL function (purple line in Figure 5) with a total source term of 0.447 Ci. The black overall trend line equation from Figure 5 resulted in a source term that is 48% higher than 0.537 Ci.

A fourth DRL function (blue line in Figure 5) was developed to reconcile the differences in total activity estimates shown in Table 3 by determining a DRL that results in a total activity that is equal to the composite profile from actual core data (green highlight in Table 3). The blue line uses a DRL of 2.75 cm which results in a calculated total activity value of 0.537 Ci (blue highlight in Table 3) that equals the activity from the actual core data.

Page 18 of 92

TSD 14-022 Revision 0 Table 3 - Comparison of Overall, Trend Line Overall and Interpolated DRL Source Terms Depth thepblac el Trend Cs-cm s17C 137 Ci 6.35E-01 2.7-1 2.14E-01 1.91 E+O00 14E1 1.56E-01 11M0 3.18E+00 5.5-2 1.14E-01 4.45E+00 2-5-2 8.38E-02 5.72 E+O00 20E2 6.13 E-02 6.99E+00 1.5-2 4.48E-02 8.26E+00 1.14-2 3.28E-02 ,4W 9.53E+00 1.5-2 2.40E-02 1.08E+01 4.6-3 1.76E-02 1.21 E+01 8-5-3 1.29E-02 1.33E+01 41E03 9.40E-03 1.46E+01 3.6-3 6.88E-03 j1*0 1.59E+01 2.0-3 5.03E-03 1.71 E+01 2.9-3 3.68E-03 ,E0 1.84E+01 1.8-3 2.69E-03 1.97E+01 1.5-3 1.97E-03 74 EX 2.10E+01 1.9-3 1.44E-03 2.22E+01 8.2-4 1.06E-03 2.35E+01 7.5-4 7.72E-04 2.48E+01 5.4-4 5.65E-04 2.60E+01 4.5-4 4.13E-04 2.73E+01 3.7-4 3.03E-04 2.86E+01 IM-4 2.21 E-04 2.98E+01 2.0-4 1.62E-04 3.11 E+01 2.3-4 1.19E-04 3.24E+01 1.5-4 8.67E-05 3.37E+01 1.6-4 6.34E-05 3.49E+01 1.1 -4 4.64E-05 Total 5.7-1 7.97E-01 From the perspective of total calculated inventory, and visual inspection, the 2.33 cm and 2.75 cm DRL interpolated functions (purple and blue lines in Figure 5) are both better fits to the actual data (green line in Figure 5) than the black Excel trend line.

However, assuming that the average concentrations are a perfect representation of the entire Auxiliary basement, one would conclude that the total inventory would be underestimated using the interpolated function (purple line in Figure 5, purple shade in Table 3). To correct this potential underestimation the DRL of 2.75 cm was selected for the ECP Geometry Template for the Auxiliary basement floor which results in a calculated total activity value that equals the activity from the actual data (green line in Figure 5, green shade in Table 3).

The second primary parameter in the ECP Geometry Template is the depth of contamination. To determine an appropriate value for depth a cumulative curve of total activity with depth was generated (see Figure 6). A depth of 5.8 cm was found to encompass 85% of the core data activity Page 19 of 92

TSD 14-022 Revision 0 (green line) and 90% of the activity in the 2.75 cm DRL function (blue line). Therefore, a depth of 5.8 cm was selected to use with the 2.75 cm DRL in the ECP Geometry Template for the Auxiliary Building floor.

100%

Composite Cumulative Deth Profile 90%

80%

70%

60%

50%

ý1 '  :-~-E , ........

40%

30%

20%

10%

0%

012 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

-90% = 4.5 cm -1 90%= 5.8 cm I Depth cm 190%= 7.5 cm I Figure 6 - Cumulative Activity Distributions for Composite and 2.3 cm DRL Section 3.3 below compares ISOCS efficiency data for circular plane geometry templates of individual cores to the extrapolated circular plane efficiency with a Cmax at 0 cm, a DRL of 2.75 cm and a depth of 5.8 cm.

3.2. Auxiliary Floor Concrete Source Term and Density It should be noted that a concrete density of 2.40 g/cm 3 was used in TSD 14-013 (5) to ensure that initial estimates of source term in concrete were bounding and conservative. In order to develop a density specifically for the Auxiliary Building floor concrete (and other end state basements) the volume and mass of a puck from each of the 17 cores was determined and the density calculated. As seen Table 4, the average density was 2.35 g/cm 3 which results in a Cs-137 inventory of 0.526 Ci (e.g.2.35/2.40 x 0.537) as opposed to the 0.537 Ci calculated in Table 2 and Table 3. The measured concrete density of 2.35 cm was used with the 2.75 cm DRL and 5.8 cm depth in the ECP geometry composer for the Auxiliary basement floor.

Page 20 of 92

TSD 14-022 Revision 0 Table 4 - Auxiliary Building Floor Concrete Densities Thickness Weight of puck Volume Density Puck ID grams cm cm3 g/cmI B105101-CJFCCV-001 126.84 1.4 54.511 2.327 8105103-CJFCCV-001 119.72 1.3 50.618 2.365 8105104-CJFCCV-001 138.86 1.5 58.405 2.378 B105105-CJFCCV-001 134.72 1.4 54.511 2.471 B105106-CJFCCV-001 135.01 1.5 58.405 2.312 8105106-CJFCCV-002 127.56 1.4 54.511 2.340 8105107-CJFCCV-001 109.06 1.2 46.724 2.334 B105108-CJFCCV-002 156.1 1.8 70.086 2.227 8105108-CJFCCV-003 129.24 1.4 54.511 2.371 8105109-CJFCCV-001 125.27 1.3 50.618 2.475 B105110-CJFCCV-001 135.86 1.5 58.405 2.326 B 10511O-CJFCCV-002 134.57 1.5 58.405 2.304 B105111-CJFCCV-001 130.33 1.4 54.511 2.391 B105113-CJFCCV-001 153.68 1.7 66.192 2.322 B105113-CJFCCV-002 151.75 1.6 62.299 2.436 8105113-CJFCCV-003 132.6 1.5 58.405 2.270 Max 2.475 Min 2.227 Average 2.353 The average density was 2.35 g/cc, which results in a Cs-137 inventory of 0.526 Ci (e.g.2.35/2.40 X 0.537 Ci).

3.3. ISOCS Composite Exponential Circular Plane Efficiency and Individual Core Circular Plane Efficiencies An ECP template was created using the ISOCS geometry composer with a DRL of 2.75 cm, a depth of 5.8 cm and a density of 2.35 g/cm 3 where the peak concentration CMax occurs at 0 (zero) cm thickness (see Figure 3 and Figure 4). The ISOCS geometry composer refers to Cna, as "the relative concentration (Ao)." The first page of the geometry composer report that shows the input parameters and the comma delimited results showing the efficiencies at the selected energies are presented in a combined report in Attachment 2. The efficiencies in counts per gamma emitted at the energies selected are summarized in Table 5. Selected data from the geometry composer input reports and results are provided in Attachment 2.

As discussed in section 3.4 below the composite ECP efficiencies were compared to the individual core efficiencies (using the CP template) to ensure that the use of the composite ECP geometry was reasonably representative of each individual core's geometry. To make this comparison each of the 17 cores were modeled in the CP geometry and the efficiency curves generated. The efficiencies in Page 21 of 92

TSD 14-022 Revision 0 counts per gamma photon emitted at the energies selected are summarized in Table 5. Selected data from the geometry composer input reports and results are provided in Attachment 2.

Table 5 - Summary of ECP and CP Efficiencies at Specified Energies Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Core IA RHR 2A RHR Aux 542 UI Pipe U2 Hot U2 Hot Aux 542 Common Description Composite Pump Pump 2B RHR Tunnel Pipe Chase Pipe Chase HUT Area B105101- B105103- B105104- B105105- B105106- B105106- B105107- B105108-CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV-Sample Number 2.75 DRL 001 001 001 001 001 002 001 001 Depth Modeled cm 5.8 13.97 24.13 2.54 49.53 43.18 2.54 35.56 17.78 All Cores Energy keV ECP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g 59.5 3.17E-06 4.06E-06 3.25E-06 5.55E-06 2.1OE-06 1.78E-06 5.65E-06 4.23E-06 4.22E-06 88 4.30E-06 5.16E-06 4.37E-06 6.68E-06 2.90E-06 2.62E-06 6.78E-06 5.11E-06 5.36E-06 122.1 4.51E-06 5.27E-06 4.57E-06 6.64E-06 3.07E-06 2.87E-06 6.71E-06 5.08E-06 5.45E-06 165.9 4.38E-06 5.01E-06 4.41E-06 6.19E-06 2.99E-06 2.84E-06 6.25E-06 4.75E-06 5.16E-06 238.6 3.89E-06 4.37E-06 3.89E-06 5.30E-06 2.67E-06 2.59E-06 5.35E-06 4.08E-06 4.49E-06 351.9 3.33E-06 3.69E-06 3.33E-06 4.40E-06 2.32E-06 2.28E-06 4.44E-06 3.40E-06 3.79E-06 583.2 2.71E-06 2.95E-06 2.71E-06 3.71E-06 1.92E-06 1.93E-06 3.46E-06 2.67E-06 3.01E-06 661.6 2.58E-06 2.79E-06 2.57E-06 3.23E-06 1.84E-06 1.84E-06 3.25E-06 2.52E-06 2.85E-06 1173.2 2.06E-06 2.18E-06 2.04E-06 2.45E-06 1.51E-06 1.54E-06 2.47E-06 1.94E-06 2.2 1E-06 1332.5 1.96E-06 2.07E-06 1.94E-06 2.31E-06 1.45E-06 1.48E-06 2.32E-06 1.83E-06 2.1OE-06 1460.7 1.88E-06 1.97E-06 1.86E-06 2.20E-06 1.39E-06 1.43E-06 2.21E-06 1.75E-06 2.OOE-06 2000 1.59E-06 1.66E-06 1.57E-06 1.82E-06 1.20E-06 1.24E-06 1.83E-06 1.46E-06 1.68E-06 Ratio 661 keV ECP 1.00 1.08 1.00 1.25 0.71 0.71 1.26 0.98 1.11 Page 22 of 92

TSD 14-022 Revision 0 Aux 542 Aux 542 Aux 542 Common Common Common Aux 542 Aux 542 Aux 542 Aux 542 Central Central Elevator Aux 542 North North Aux 542 UI UI Description Area Area Shaft South Area Area Area East Area ABEDCT ABEDCT B105108- B105108- B105108- B105109- BI05110- BI05110- B105111- B105113- B105113-CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV-Sample Number 002 003 004 001 001 002 001 001 002 Depth Modeled cm 10.16 6.35 5.08 1.27 2.54 1.27 20.32 10.16 13.97 Energy keV CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g CP Eff c/g 59.5 3.34E-06 5.63E-06 5.64E-06 5.65E-06 5.65E-06 5.65E-06 3.26E-06 5.45E-06 4.16E-06 88 4.31E-06 6.75E-06 6.76E-06 6.78E-06 6.77E-06 6.78E-06 4.28E-06 6.58E-06 5.30E-06 122.1 4.45E-06 6.70E-06 6.70E-06 6.71E-06 6.71E-06 6.71E-06 4.45E-06 6.55E-06 5.40E-06 165.9 4.26E-06 6.23E-06 6.24E-06 6.25E-06 6.25E-06 6.25E-06 4.27E-06 6.11E-06 5.12E-06 238.6 3.75E-06 5.34E-06 5.34E-06 5.35E-06 5.35E-06 5.35E-06 3.77E-06 5.24E-06 4.46E-06 351.9 3.21E-06 4.43E-06 4.43E-06 4.44E-06 4.44E-06 4.44E-06 3.22E-06 4.36E-06 3.77E-06 583.2 2.60E-06 3.45E-06 3.45E-06 3.46E-06 3.46E-06 3.46E-06 2.62E-06 3.40E-06 3.22E-06 661.6 2.48E-06 3.25E-06 3.25E-06 3.25E-06 3.25E-06 3.25E-06 2.49E-06 3.21E-06 2.84E-06 1173.2 1.97E-06 2.46E-06 2.47E-06 2.47E-06 2.47E-06 2.47E-06 1.98E-06 2.44E-06 2.21E-06 1332.5 1.88E-06 2.32E-06 2.32E-06 2.32E-06 2.32E-06 2.32E-06 1.89E-06 2.30E-06 2.1OE-06 1460.7 1.80E-06 2.21E-06 2.21E-06 2.21E-06 2.21E-06 2.21E-06 1.81E-06 2.18E-06 2.OOE-06 2000 1.53E-06 1.83E-06 1.83E-06 1.83E-06 1.83E-06 1.83E-06 1.53E-06 1.81E-06 1.68E-06 Ratio 661 keV ECP 0.96 1.26 1.26 1.26 1.26 1.26 0.97 1.24 1.10 3.4. Comparison of Total Activity Estimate Using Composite and Individual Core Efficiencies This section compares the efficiency values generated using the composite ECP template (2.75 DRL and 5.8 cm depth) to the efficiency values generated using the actual activity distributions in individual cores modeled with the CP template. The Cs-137 (661.6 keV) efficiency value is used for the comparison. The ratios are listed in the bottom row of Table 5. The objective is to ensure that using the composite ECP depth distribution over the entire Auxiliary basement floor will not underestimate the total activity. The ratios of the average ECP efficiency value to the 17 individual core CP efficiency values are also evaluated to ensure that the average is reasonably representative for each of the cores. This comparison is necessary because it is hypothetically possible that significant variability in the ratios of composite to individual core efficiencies could occur while still resulting in an acceptably close estimate of total activity due to the composite reflecting the average of the activity distribution with depth.

In general, if individual core CP efficiency is higher than the composite ECP efficiency then the use of the composite ECP efficiency to analyze an ISOCS measurement in the area represented by the given core would overestimate activity. This would be conservative in that it would overestimate dose. However, the 17 CP/ECP efficiency ratios do not fully represent the potential effect on the total activity estimate over the entire Auxiliary basement floor. The activity estimate will also depend on the concentrations found in a given core. For example, if a given core contains relatively Page 23 of 92

TSD 14-022 Revision 0 high concentrations and therefore represents a high percentage of the total activity in the building, the effect of the CP/ECP efficiency bias for the given core on total activity will be greater than if the core concentrations were low. The analysis in this section accounts for both efficiency bias and relative concentrations of individual cores.

Efficiency curves were generated for each of the 17 cores. For a given core, the actual concentrations in each 0.5 inch puck (see Table 1) were entered into the CP geometry template.

This generates an efficiency curve that would be directly applicable to ISOCS measurements in the area represented by core. The efficiency curves for the individual cores were then compared to the composite efficiency curve. Note that the predominant radionuclide is Cs-137 and the comparisons are made using only the Cs-137 efficiency to reduce complexity.

Table 6 provides the results of the efficiency comparison. All total activity entries (Rows 1, 4, and

5) are calculated assuming that each core represents the entire Auxiliary Basement floor. The table entries are:

" Rowl contains the calculated inventory using the results of core analysis directly. The total activity in the Auxiliary Basement was estimated by multiplying the average concentration in the core (pCi/g) by the mass over the entire Auxiliary Basement floor assuming a depth equal to the depth of contamination identified in the core, a surface area of 2591 m 2 and a density of 2.35 g/cc.

" Row 2 contains the Cs- 137 gamma efficiency from the composite ECP template (from Table 5). Note that only one value is generated and therefore all Row 2 entries are identical.

• Row 3 contains the Cs-137 efficiencies for each core using the CP template (from Table 5).

• Row 4 contains the ratio of the average/individual core efficiencies (from Table 5).

• Row 5 contains the multiple of Row 1 and Row 4 to provide an estimate of the activity that would be reported by an ISOCS measurement in the area represented by the given core assuming that the average ECP efficiency file is used for the analysis.

Reviewing Row 4 shows that the ratios are reasonably close for all cores with the exception of cores B105 105 (Aux 542 U1 Pipe Tunnel) and B105106 (Aux 542 U2 Hot Pipe Chase) which are 48.9 and 42.5 cm deep, respectively. Due primarily to the actual depth versus the composite ECP depth of 5.8 cm both have ratios of 0.71 indicating that the ECP will underestimate the activity present under these conditions by 29%. In addition, inspection of Row 1 indicates that these two cores represent the highest activity at 2.57E+12 pCi and 8.55E+1 1 pCi, respectively. The low ratio and high relative activity results in a potential that the total activity in the Auxiliary Basement floor could be underestimated by -8% (4.8 1E+I 1/5.24E+ 11) as shown in Table 7, Row 2 if the average efficiency is applied to all areas of the Auxiliary Basement floor. The reason for the low ratio in the Pipe Tunnel cores is the significant depth of the contamination found in these two cores. This is likely due to cracks in the area where the cores were collected. Note that the characterization cores were collected from locations where elevated activity was identified by instrument scan survey or where physical evidence of leaks were observed.

To eliminate the 8% low bias in total activity the ISOCS efficiency files for cores B105105 (Aux 542 UI Pipe Tunnel) and B105106 (Aux 542 U2 Hot Pipe Chase) will be based on area-specific depth distributions. Because of the unusual depth of contamination in these cores, additional cores Page 24 of 92

TSD 14-022 Revision 0 may be collected in the U 1 and U2 Pipe Tunnels to ensure that the depth distribution is well understood.

Table 7, Row 3 provides the projected total activity reported by ISOCS measurements assuming that the "Ratio: Individual Core/Average" is 1.0 for Cores B105105 and B 105106 under assumption that an area-specific efficiency will be used for ISOCS measurements in the Pipe Tunnels. As seen in Table 7, Row 3 when this adjustment is made the projected total activity using the average ECP efficiency with the average CP efficiency file in all areas except the Pipe Tunnel will result in an overestimate of total activity of-3% (5.39E+11/5.24E+1 1). Therefore, use of the composite ECP with a 2.75 cm DRL and 5.8 cm depth will result in a reasonably conservative estimate of total activity in the Auxiliary Basement floor assuming that area specific Geometry Template and efficiency calibration will be performed for the Pipe Tunnels.

Page 25 of 92

TSD 14-022 Revision. 0 Table 6 - Comparison of Average and Individual Core Efficiency Values and Effect on Total Activity Estimate in Auxiliary Basement Floor Aux 542 Aux 542 Aux 542 Aux 542 IA Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Aux 542 Anx 542 RHR 2A RHR Aux 54 UI Pipe L2 Hot U2 Hot AuT Common Commoen Common Comamon South North North East U! UI Pump Pump Tunnel Central Central Elevator Area Area Area Area ABEDCT ABEDCT Location Area Area Shaft BI05101- B105103- B105104- B105105- B105106- B105106- BI05107- BI05108- B105108- B105108- B105108- B105109- BI05110- B105110- BI05111- B105113- BI05113-CJFCCV- CJFCCV- .IFCCV CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCC\;- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCV- CJFCCVI- CJFCCV- CJFCCV-Sample ID 001 001 001 001 001 002 001 001 002 003 004 001 00t 002 001 001 002 Average pCi/g 4.41E+02 2.70E+03 3.63E+00 8.52E+02 3.25E+02 1.07E+03 4.29E+00 2.15E+02 2.03E+O1 2.44E+02 2.81E+01 5.11E+02 7.82E+02 2.21E+01 1.18E+02 4.82E+02 2.15E+02 Core Depth cm 13.97 24.13 2.54 49.53 43.18 2.54 35.56 17.78 10.16 6.35 5.08 2.54 2.54 2.54 20.32 10.16 13.97 Total Cs- 137 Activity in Auxiliary Basement 3.75E+11 3.76E+12 5.61E+08 2.57E+12 8.55E+l1 1.66E+1l 9.30E+09 2.16E+11 1.26E+10 9.44E+10 8.69E+09 7.91E+10 1.21E+II 3.41E+09 1.46E+ll 2.98E+l1 1.83E+l1 Based on Individual Core Data AverageCs-I37 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 2.58E-06 Efficiency IndividualCoreCs- 2.79E-06 2.57E-06 3.25E-06 1.84E-06 1.84E-06 3.25E-06 2.52E-06 2.85E-06 2.48E-06 3.25E-06 3.25E-06 3.25E-06 3.25E-06 3.25E-06 2.48E-06 3.21E-06 2.84E-06 137 Efficiency Ratio: Individual 1.08E+00 9.98E-01 1.26E+00 7.14E-01 7.14E-01 1.26E+00 9.78E-01 1.1IE+00 9.63E-0I 1.26E+00 1.26E+00 1.26E+00 1.26E+00 1.26E+00 9.63E-01 1.25E+00 L.IOE+0O Core/Average Projected ISOCS Measured Cs- 137 Activity Using'True' 4.06E+11 3.76E+12 7.08E+08 1.83E+12 6.11E+11 2.09E+ll 9.09E+09 2.39E+1l 1.21E+10 1.19E+ll l.IOE+10 9.98E+10 1.53E+ll 4.30E+09 1.40E+ll 3.71E+ll 2.02E+11 Individual Core Efficiency (pCi)

(Note I)

Projected ISOCS Measured Cs-137 Activity using 'True' uindividue' 4.06E+ll 3.76E+12 7.08E+08 2.57E+12 8.55E+ll 2.09E+11 9.09E+09 2.39E+11 1.21E+10 1.19E+lI 1.10E+I0 9.98E+10 1.53E+ll 4.30E+09 1.40E+ll Individual Core 3.71E+ll 2.02E+l1 Efficiency (pCi) with adjustment (N ote 2) L _J _ _

Note 1: Multiple of total Cs-137 activity in Row 1 by the "Ratio: Individual Core/Average" in Row 4 Note 2: Adjustment includes setting the "Ratio: Individual Core/Average" to 1.0 for Cores B 105105 and B 105106 under assumption that individual core efficiencies will be used in these two areas as opposed to the average efficiency due to relatively low ratios for these two cores.

Page 26 of 92

TSD 14-022 Revision 0 Table 7 - Projection of Total Cs-137 Activity in Auxiliary Basement Using Average ECP Efficiency (Note 1)

Total Cs-137 Activity in Auxiliary Basement Based on Core Characterization Data 5.24E+l I pCi (Note 1)

(pCi) at 2.35 g/cc Projected ISOCS Measured Total Cs-137 Activity in Auxiliary Basement using 4.8 1E+ I1pCi (Note 2)

Composite ECP Efficiency (pCi)

Projected ISOCS Measured Total Cs-137 Activity in Auxiliary Basement using Average ECP Efficiency File 539E+1 I pCi (Note 3) after adjustment for two anomalous cores (pCi)

Note 1: Average of Table 6, Row I Note 2: Average of Table 6, Row 5 Note 3: Average of Table 6, Row 6 3.5.

Conclusion:

Geometry Template for Auxiliary Basement Floor Based on the discussion above, the ECP Geometry Template using a DRL of 2.75 cm, a depth of 5.8 cm and a density of 2.35 grams will be used for efficiency calibration and applied to all areas of the Auxiliary Basement floor with the exception of the Pipe Tunnels. The geometry template for the pipe tunnels will either be the CP template provided in this TSD or a similar template based on additional characterization if performed. This decision will be made as a part of STS planning and Design Package Preparation.

Note that this conclusion assumes that the configuration of the Auxiliary basement floor is relatively fiat concrete surface. If remediation causes a significant change in this assumed 'flat' geometry then adjustments may be made to the geometry template used in the affected areas.

3.6. Auxiliary Basement Walls As seen in Attachment 3, three cores were obtained from walls of the Auxiliary Building. The core locations, results of in-house and off-site laboratory analysis, and estimated wall source term are discussed in TSD 14-013 (5). All three cores exhibited very shallow contamination depth as seen in Table 8. The embedded source term was assumed to be limited to within three feet of the floor with the exception of the HUT cubicles walls which were assumed to be contaminated over the entire wall height with a depth profile the same as the HUT floor core B105107-CJFCCV-001, i.e., down to 14 inches.

Table 8 - Auxiliary Building Wall Core Cs-137 Results Aux 542 East Unit 1 AEDCT AUX 542 U2 Sample Description Wall Room Wall EDT Wall B105111- B105113- B105114-Sample ID cJwccv-o02 cJWCCV-003 cJwcCV-ooi Sample Date 5/30/12 5/23/12 6/4/12 Decay To Date 1/1/13 1/1/13 1/1/13 Depth Mid Depth Puck inches cm Cs-137 pCi/g Cs-137 pCi/g Cs-137 pCi/g Puck 1 0 - 0.5 0.635 0.7 13833.9 3139.8 Puck 2 0.5 - 1.0 1.905 0.8 0.7 Page 27 of 92

TSD 14-022 Revision 0 The basis for the 3 foot and full height wall contamination assumptions in the general area and HUT, respectively, was operational history that indicates flooding to those heights during operation.

(5)

The three wall cores were from locations that exhibited evidence of water staining or high dose rates. While more cores may be required to confirm that wall source terms are confined to the first half inch, it is likely that a Circular Plane model with layer I being 1.27 cm will provide an appropriate model for the assay of the Auxiliary Building walls outside the HUT cubicles.

There is evidence that the HUT cubicles may have been flooded based on the presence of boric acid crystals on the walls. The results from HUT floor (AUX 542 HUT B105107-CJFCCV-001) showed the floor in the center cubicle to have relatively low Cs-137 concentrations at 89 pCi/g in the first half inch with levels approximately 1 to 2 pCi/g over the remaining 14 inches of the core. In order to ensure initial estimates of the source term in the walls were bounding, the results of the HUT floor core B105107-CJFCCV-001 were applied to the three end state HUT walls from the 541.5 foot to 588 foot elevation in TSD 14-013 (5). Due to the unusual profile and operational history in the HUT additional cores of the walls and floor should be considered to develop an area specific ISOCS geometry template and efficiency calibration. If there is evidence of elevated readings on walls outside the HUT cubicles, such as in the RHR cubicles, additional core samples should be considered in these areas to augment the results of the three samples obtained.

3.7. Containment Basement As noted above in Section 2.2, the steel liner walls in the containments extend from the 588 foot elevation to the basement floor at the 568 foot elevation with no interior concrete (3). The In-Core area consists of the area directly below the reactor vessel and an access tunnel. The In-Core area below the reactor vessel has 23.5 inch concrete walls and a 30 inch floor inside the liner. The access tunnel has 1 foot of concrete inside the liner on the walls, floors and ceilings. The concrete wall and floor directly below the vessel is neutron activated. (4) As noted in Chapter 5 of the LTP (1),

current plans are to remove all concrete inside the liners in both Containments. The source term geometry for the containment basements will be a thin layer of surface contamination on the remaining steel liners. This radionuclide distribution of the residual contamination on the liner may be influenced by the activated concrete from the bioshield removal. (8) The geometry used on the Containment carbon steel liner walls and floors will be a CP geometry with a thin source thickness.

(12)

To determine a reasonable source thickness the potential for corrosion to be present that could have trapped contamination during operations was considered. A NRC containment liner corrosion report (13) states that in the absence of foreign materials such as wood, "Atmospheric corrosion rates for steel are dependent on the type of environment and rangefrom 0.005 to 0. 02 mm/yr [0.2 to 0.8 mpy] in ruralatmospheres to 0.03 to 0.08 mm/year [1.2 to 3.2 mpy] in marine environments."

Where mpy equals mils per year which is equivalent to one thousandth of an inch per mil.

The Zion Unit 1 start date was June 19, 1973. The Unit 2 start date was December 24, 1973. (14)

(15) Assuming the Containments were constructed six years prior to start up, the liners would have 51 years of corrosion by the time of STS in July of 2018. Using the NRCs atmospheric and marine corrosion levels over a 51 year duration results in the ranges of corrosion to the 0.25 inch (0.635 cm) thick liner shown in Table 9.

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TSD 14-022 Revision 0 Table 9 - Potential Containment Liner Corrosion Thicknesses Under Atmospheric and Marine Conditions 51 year Corrosion Corrosion Rate Thickness Corrosion  % Liner mmlyear mm Thickness cm Thickness Atmospheric 0.005 0.26 0.026 4%

Marine 0.03 1.53 0.153 24%

A source thickness of 0.153 cm provides a bounding and conservative depth of contamination for the liner model.

In the event that some concrete inside the liner is left in either Containment at the 568 foot elevation floors or the In Core areas under the vessel, core data is available in TSD 13-006 (4) to develop concentration profiles at depth and corresponding ISOCS efficiency curves as was done for the Auxiliary Building floor. If contamination is found below the liner in areas such as sumps, the depth of contamination can be determined through additional cores.

3.8. Turbine Basement As noted above in Section 2.2, cores from the Turbine Building and Steam Tunnels exhibited very low levels of Cs- 137 in the first half inch of some of the cores (6) with locations very localized. (6).

As seen in Table 10, the majority of the activity is in the first half inch (1.27 cm) pucks in the locations that exhibited surface contamination.

Table 10 - Summary of Turbine Building and Main Steam Tunnel Cores Unit I Unit I Unit 1 Turbine Turbine Turbine Turbine Turbine Turbine Turbine Turbine 570 Ul 570 Ul 570 Ul 570 Ul 570 Ul 560 560 560 Steam Steam Steam Steam Steam North North North Tunnel Tunnel Tunnel Tunnel Tunnel B206104 B206104 B206104 B206207 B206207 B206207 B206207 B206207 CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC V-001 V-002 V-003 V-001 V-002 V-003 V-004 V-005 Avg Avg Avg Avg Avg Avg Avg Avg Puck Depth pCilg pCilg pCilg pCilg pCig pCig pCi/g pCig Puck 1 0.635 0.12 1.10 33.5 33.45 32.9 10.75 28.1 12.79 Puck 2 1.905 0.26 0.14 0.10 0.09 0.09 0.11 0.10 0.07 Puck 3 3.175 0.13 0.11 0.13 0.06 0.08 0.09 Puck 4 4.445 0.12 0.11 Page 29 of 92

TSD 14-022 Revision 0 Unit 1 Unit I Unit 1 Unit 1 Unit I Unit 1 Unit 1I Unit 1 Unit 1 Unit 1 Main Main Main Main Main Main Main Main Main Main Steam Steam Steam Steam Steam Steam Steam Steam Steam Steam Valve Valve Valve Valve Valve Valve Valve Valve Valve Valve House House House House House House House House House House B209171 B209171 B209171 B209171 B209171 B209171 B209171 B209171 B209171 B209171 CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC CJFCC V-001 V-002 V-003 V-004 V-005 V-006 V-007 V-008 V-009 V-010 Avg Avg Avg Avg Avg Avg Avg Avg Avg Avg Depth pCi/g pCilg pCi/g pci/g p p pg p p/g pcg pg pCfig pCi/g Puck 1 0.635 488.5 578 58.35 86.05 356.5 267.5 345 367 66.35 551.5 Puck 2 1.905 0.13 0.12 0.81 0.13 0.09 0.10 0.60 0.07 0.11 1.37 Puck 3 3.175 0.08 0.11 0.30 0.11 0.12 0.08 0.16 0.05 0.12 0.42 Puck 4 4.445 0.12 0.14 0.16 Puck 5 5.715 0.12 0.16 0.13 Puck 6 6.985 0.17 0.13 Puck 7 8.255 0.19 Puck 8 9.525 0.13 U2 Main U2 Main Steam Steam Turbine Turbine North North 570 U2 570 U2 Valve Valve Steam Steam House House Tunnel Tunnel 570 570 B206208 B206208 B209201 B209201 CJFCC CJFCC CJFCC CJFCC V-001 V-002 V-001 V-002 Avg Avg Avg Avg Depth pCig pCi/g pCi/g .pCig Puck 1 0.635 5.05 13.70 26.9 8.11 Puck 2 1.905 0.12 0.24 0.14 0.10 Puck 3 3.175 _ 0.15 _ _ 1 0.14 Note: Bold Italic equals MDC.

The top puck from five of the above cores was sent for analysis at Eberline Laboratories. The only plant related positively identified radionuclide was Cs-137. (16) A CP model with a 2.54 cm depth will yield a bounding and conservative estimate of the activity for the Turbine Building and Main Steam Tunnels.

3.9. Crib House, Forebay, and Circulating Water Intake Pipes Scoping surveys in the Crib house using an Inspector 1000 instrument and the results of three cores did not detect any plant-derived radionuclides (17). The Forebay and Circulating Water Intake Pipes may have scoping and characterization surveys performed as well once drained if deemed necessary given the Crib House results and low expectation of contamination being present. Based on results of core samples in the Turbine Building which contained little or no contamination, Page 30 of 92

TSD 14-022 Revision 0 detectable contamination in the Crib House, if any, is expected to be confined to the upper half inch.

A CP model with a depth of 1.27 cm can be used for the STS of these locations. (6) 3.10. Fuel Pool and Fuel Transfer Canal The Spent Fuel Pool and Transfer Canal end states will have the steel liner below the 588 foot elevation removed. Inspection of SFP liner weld leakage occurred once to twice per year by sampling the tell-tale drain system. Some did show very minor leakage but this was all collected and routed to Auxiliary Building sump by design versus uncaptured. (6) The concrete will be cored and characterized when the liner is removed and a methodology similar to that described for the Auxiliary Building floor can be used to determine the parameters of a CP or ECP geometry template.

3.11. Waste Water Treatment Facility (WWTF)

The WWTF is an operating facility required for National Pollutant Discharge Elimination System (NPDES) permit compliance. Therefore characterization has been limited to direct radiation and removable contamination surveys. There are indications that detectable levels of plant related radionuclides are present. (6) When the WWTF is removed from service, the concrete below the 588 foot elevation will be characterized. Since the building housed a non-radioactive system it is likely that any contamination present will be in the upper 1.27 cm as in the Turbine Building and Main Steam Tunnels and that CP model with a depth of 1.27 cm can be used.

3.12. Circulating Water Discharge Tunnels The South, Unit 1, Discharge Tunnel was used as a liquid effluent discharge pathway during plant operation. But the waste discharge point was at the far eastern side of the tunnel under the valve house. It is unlikely that the end state concrete structures will have sorbed contamination deeper than 1.27 cm. Confirmatory characterization will be performed when the tunnel becomes accessible during the decommissioning process.

The North, Unit 2, Discharge Tunnel was converted for use as an effluent discharge point during decommissioning. Due to the design of the system, water from the Lake Tanks which could be up to ten times the effluent concentration limits of the Off Site Dose Calculation Manual (ODCM) was released into the far western end of the tunnel while the preponderance of the service water dilution flow entered from the far eastern end under the valve house. (6) This created a dead leg which may have allowed sediments in the tunnel and some of its concrete to sorb contamination. The north Unit 2 tunnel may require a methodology similar to the Auxiliary Building basement to develop an ECP or CP model that accurately represents the depth profile. This will be determined after characterization is completed.

4. ISOCS EFFICIENCY UNCERTAINTY ANALYSIS The ISOCS Geometry Composer was used to test the sensitivity of the parameters in the Auxiliary Floor Composite ECP model (Attachment 2) including density, contamination thickness and DRL.

The ranges of the parameter values assessed are based on the analyses shown in Figure 5, Figure 6 and Table 4. The ISOCS reports are provided in Attachment 5 and the Cs- 137 results are summarized in Table 11.

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TSD 14-022 Revision 0 Table 11 - ECP Model Sensitivity for Density, Depth, and DRL Ref Eff Value 1 Value 2 Value 1 Value 2 Parameter Reference Value 1 Value 2 Units c/g Eff c/g Eff c/g  % Ref  % Ref Density 2.35 2.3 2.4 g/cc 2.58E-06 2.59E-06 2.56E-06 101% 99%

Thickness 58 45 78 mm 2.58E-06 2.65E-06 2.41E-06 103% 94%

DRL 27.5 23.3 45 mm 2.58E-06 2.67E-06 2.44E-06 104% 95% I Worst 1104% 194%

The results indicate that the thickness due to depth of contamination is the most sensitive parameter followed by the DRL. The least sensitive relative to the actual potential range of values is the density. The results indicate that the efficiency values are relatively insensitive to variability in the parameters ranging from 94% to 104% of the reference efficiency (2.75 DRL, 5.8 cm depth, density 2.35 g/cm 3 ).

5. SENSITIVITY TO NON-UNIFORM AREAL DISTRIBUITON The development of geometry templates and efficiency files discussed above assumes that the residual radioactivity is uniformly distributed over the ISOCS FOV. This section reviews the effect of non-uniform areal distributions on the calculation of total activity using ISOCS.

To determine the effect of non-uniform distributions two sets of three ECP Geometry Templates (DRL = 2.75, Depth = 5.8) were developed as shown in Figure 7. The first set assumed that the contaminated area was limited to a I m circular area as opposed to the full 28.3 m2 field of view.

The location of the 1 m 2 areas were defined by three offset distances from the detector centerline which were 0 m, 1.22 m, and 2.43 m. The 2.43 m offset places the lm 2 area at the edge of the 28.3 m2 field of view (i.e., the furthest distance from the detector). As seen in Figure 7, the second set of non-uniform distributions evaluated assumed that the contaminated area was a 0.5 m 2 circular area with offset distances from the centerline of 0 m, 1.3 m, and 2.60 m.

Efficiency files were generated for each configuration. The relevant excerpts from the geometry composer model report and results reports are provided in Attachment 4 and summarized in Table 12.

Inspection of Table 12 shows that the Cs- 137 efficiencies for single 1.0 m2 areas of contamination exceed the uniform ECP efficiency (DRL 2.75 cm, depth 5.8 cm) by a factor of 2.46 and 1.62 at offset distances of 0.0 m and 1.22 m, respectively. At a distance of 1.89 m the efficiencies of the uniform and 1 m area are equal. At offset distances greater than 1.89 m the 1 m2 area efficiencies 2 are less than the uniform. In summary, a I m area with a center that is offset less than 1.89 m would result in overestimating the total activity using the uniform ECP efficiency and I m2 spots with offsets greater than 1.89 m would result in an underestimate. Calculating an area-weighted 1 m2 efficiency average from the data in Table 12 shows that if a number of 1 m 2 spots were randomly distributed in either one or several ISOCS measurement FOVs the effective efficiency would be a factor of 1.2 times higher than the uniform ECP efficiency. This would result in an overestimate of total activity if the ISOCS spectrums were analyzed with the uniform ECP efficiency.

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TSD 14-022 Revision 0 1.0 m'Offsets in 28.3 m' Field Of View 06m 0 1.13m 1.om' Dotted Circle Indicates location wt 1.0 m' area efficiency Is equal to the 28.3m' Field of View efficiency.

0.5 m'Offsets In 28.3 m' Field Of View

-0 6m 0.798m 0.5 m'

-Dotted Circle Indicates location where 0.5in area efflency Is equal to the 28.3m2 Field of View efficiency.

Figure 7 - Areal Distribution Model Illustration Page 33 of 92

TSD 14-022 Revision 0 Table 12 - Areal Distribution Efficiency Results All Cores 1 m2 122 1 m 2 244 0.5 m2 0.5 m 2 0.5 M2 ECP Eff 1 m 2 No cm cm No 130 cm 260 cm Energy keV c/g Offset Offset Offset Offset Offset Offset 59.5 3.17E-06 6.OOE-06 4.66E-06 2.45E-06 6.03E-06 4.38E-06 2.14E-06 88 4.30E-06 8.19E-06 6.33E-06 3.33E-06 8.26E-06 5.96E-06 2.89E-06 122.1 4.51E-06 8.69E-06 6.67E-06 3.47E-06 8.79E-06 6.30E-06 3.02E-06 165.9 4.38E-06 8.81E-06 6.59E-06 3.28E-06 8.94E-06 6.22E-06 2.84E-06 238.6 3.89E-06 8.32E-06 5.97E-06 2.81E-06 8.49E-06 5.62E-06 2.42E-06 351.9 3.33E-06 7.66E-06 5.22E-06 2.30E-06 7.88E-06 4.89E-06 1.98E-06 583.2 2.7 1E-06 6.62E-06 4.37E-06 1.79E-06 6.83E-06 4.32E-06 1.52E-06 661.6 2.58E-06 6.34E-06 4.18E-06 1.68E-06 6.54E-06 3.91E-06 1.43E-06 1173.2 2.06E-06 5.02E-06 3.41E-06 1.32E-06 5.16E-06 3.20E-06 1.11 E-06 1332.5 1.96E-06 4.75E-06 3.23E-06 1.26E-06 4.88E-06 3.04E-06 1.06E-06 1460.7 1.88E-06 4.52E-06 3.09E-06 1.20E-06 4.64E-06 2.92E-06 1.01E-06 2000 1.59E-06 3.77E-06 2.62E-06 1.02E-06 3.86E-06 2.48E-06 8.57E-07 Cs-137 661.6 KeV 1.00 2.46 1.62 0.65 2.54 1.52 0.56 Ratio Adjustment Factor 0.41 0.62 1.53 0.39 0.66 1.80 Area Weighted Average 1.2 1.1 The same general analysis applies to the 0.5 m2 area spots. Figure 7 shows that the 0.5 m2 efficiency equals the uniform ECP efficiency at an offset distance of 1.86 m. From Table 12 the weighted average efficiency of randomly distributed 0.5 m 2spots is a factor of 1.1 times higher than the uniform ECP efficiency and would also result in an overestimate of total activity if the ISOCS spectrums were analyzed with the uniform ECP efficiency.

The area weighting was performed by calculating the circular areas inside and outside of the offset distance where the efficiencies of the all cores ECP and spot efficiencies are equal, i.e., 1.89 m and 1.86 m for the I m2 and 0.5 m2 spots, respectively. The two adjustment factors listed in Table 12 for offset distances less than the "equal distance" were averaged and applied to the inside circular area.

The single adjustment factor in Table 12 with an offset greater than the "equal distance" was applied to the circular area outside of the "equal distance".

The analyses above assume that there is no contamination present in the FOV other than a single at the distances shown. Any increase in the number and areal extent of contamination beyond the single 1 m 2 and 0.5 m2 areas assumed in Table 12, up to full uniform contamination over the entire 28 m 2 FOV would result in a convergence between non-uniform and uniform efficiencies.

The distribution and location of non-uniform elevated areas are expected to be randomly located with equal probability of being at any distance from the detector centerline. This would lead to the total activity estimate, on average, over an entire basement being reasonably conservative when the composite ECP efficiency file, which is based on uniform areal distribution, is applied. Therefore, no efficiency adjustment for potential non-uniform areal distribution is considered necessary.

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TSD 14-022 Revision 0 Note that the location(s) of small isolated spots, if any, in contaminated areas such as the Auxiliary basement should be well known through the results of the scan surveys that will be performed to identify areas exceeding the 2 mR/hr open air demolition criteria. After remediation of these areas additional scan surveys will be conducted to ensure that the remediation was successful providing additional information in regards to the potential for elevated areas at the time of STS. This scan information will further inform the STS survey design process to ensure that there is no obvious source term geometry present that would result in underestimating total activity in a given basement considering the sample plan and locations for ISOCS STS measurements. Note that this discussion of isolated spots is actually germane only to the Auxiliary Basement and possibly the Fuel Pool/Transfer Canal and north Unit 2 Discharge Canal. Remaining basements are expected to contain very low levels of residual radioactivity at license termination.

6. MINIMUM DETECTABLE CONCENTRATIONS OF CP AND ECP MODELS The Minimum Detectable Concentrations (MDCs) for the ISOCS application during STS of the ZSRP Basements are a small fraction of the contamination levels corresponding to the Basement Fill Model (BFM) activity limits. The Cs-137 MDCs were evaluated for three geometries;

1. The composite ECP that will be used for the STS of the Auxiliary Basement Floors and perhaps the Spent Fuel Pool and Transfer Canal,

2. The 1.27 cm CP used for the Auxiliary Building walls and all other end state structures except the Containments, and

3. The 0.153 cm CP model for the steel liners of the containments.

The ISOCS reports are provided in Attachment 6 and the Cs-137 MDC results are summarized in Table 13.

The predominant radionuclide is Cs-137 which has nominal MDCs of 1.1 1E+04, 8.94E+03 and 8.21 E+03 pCi/m 2 , respectively for each of the three models. To compare this MDC to the BFM activity limits, the values in LTP Table 5-9 were divided by the surface area of each structure to convert the building limit to pCi/m2 . The ISOCS MDC can then be directly compared to the BFM limit. Table 13 provides the results which show that the MDC ranges from 0.004% to 0.294% of the BFM limit (pCi/mi2) for the ZSRP basements. Note that the highest MDC percentage 0.294% is in the WWTF which has a relatively low BFM Inventory Limit due to the small size of the structure.

This is an artifact of the BFM method which relies on the basement surface area to volume ratio as one of the inputs. However, the low BFM limit for the WWTF is not significant given minimal contamination is expected to be present. The vast majority of the residual radioactivity is known to be contained in the Auxiliary Building basement and Spent Fuel Pool (SFP)/Transfer Canal. The ISOCS MDC percentages are 0.004% and 0.0 12% for these two basements, respectively.

Page 35 of 92

TSD 14-022 Revision 0 Table 13 - Comparison of ECP and CP Model MDCs to Basement Fill Model Limits Auxiliary Building Floor* 5.8 cm ECP 27888 2,590.88 6.90E+02 2.66E+08 1.11 E+04 0.004%

Auxiliary Building Walls* 1.27 cm CP 42200 3,920.51 1.45E+02 3.70E+07 8.94E+03 0.024%

Unit 1 Containment Liner 0.153 cm CP 29687.6 2,758.07 1.52E+02 5.51E+07 8.21E+03 0.015%

Unit 2 Containment Liner 0.153 cm CP 29687.6 2,758.07 1.52E+02 5.51E+07 8.21E+03 0.015%

SFP/Transfer Canal 5.8 cm ECP 7782.26 723.00 6.82E+01 9.43E+07 1.11E+04 0.012%

Turbine Building and Discharge Tunnels 1.27 cm CP 160454 14,906.66 5.94E+02 3.98E+07 8.94E+03 0.022%

Crib House/Forebay 1.27 cm CP 74705 6,940.32 6.52E+02 9.39E+07 8.94E+03 0.010%

WWTF 1.27 cm CP 12104 1,124.50 3.42E+00 3.04E+06 8.94E+03 0.294%

• BFM Limit Adjusted to 83% of Limit in Floor 17% in Walls

7. CONCLUSION The ISOCS gamma spectroscopy instrumentation can be used to perform the STS of the ZSRP end state structure basements. ECP and CP Geometry Templates have been developed to accurately assay the gamma emitting source term in the end state basements. This TSD provides recommended Geometry Templates to apply to each end state basement at ZSRP. All of the recommended templates assume uniform contamination. This TSD demonstrates that no adjustment to the ISOCS efficiency calibrations are necessary to account for isolated spots of contamination.

Additional concrete core samples should be collected from the following areas to either validate the limited core data currently available or to provide new data in areas that are considered to have unique operational history or contamination profile relative to other building areas. The ISOCS Geometry Template to apply in these areas will be developed using the methods described in this TSD based on a combination of existing and new core data. The areas are listed below:

" HUT walls and floor. If there is evidence of elevated readings on walls outside the HUT cubicles, additional core samples should be considered in the elevated areas.

• Auxiliary Building Pipe Tunnels

" Fuel Pool and Fuel Transfer Tunnel after Fuel Pool liner removed

" North Unit 2 Discharge Tunnel

8. REFERENCES I. Zion Station Restoration Project License Termination Plan Revision 0.

2. NUREG-1575, Rev. 1, Multi-Agency Radiation Survey And Site Investigation Manual (MARSSIM), August 2000.

Page 36 of 92

TSD 14-022 Revision 0

3. TSD 13-005, Unit I & 2 Reactor Building Estimated End State Concrete and Liner Volumes and Surface Areas.

4. TSD 13-006, Reactor Building Units I and 2 End State Concrete and Liner Initial Characterization Source Terms and Distributions.

5. TSD 14-013, Zion Auxiliary Building End State Estimated Concrete Volumes, Surface Areas, and Source Terms.

6. TSD 14-014, End State Surface Areas, Volumes, and Source Terms of Ancillary Buildings.

7. SU-476-3 Advanced ISOCS Measurements Training Course, Canberra Industries Inc, January 2014.

8. TSD 14-019 Radionuclides of Concern for Soil and Basement Fill Model Source Terms.

9. TSD 11-001 Potential Radionuclides of Concern During the Decommissioning of the Zion Station.

10. TSD 10-002 Technical Basis for Radiological Limits for Structure, Building Open Air Demolition.

11. 10 CFR 20 Standards for Protection Against Radiation, Subpart E-Radiological Criteria for License Termination http://www.nrc.gov/reading-rm/doc-collections/cfr/part02O/.

12. Canberra 31013E V4.2 Technical Reference Manual, Model S573 ISOCS Calibration Software.

13. NRC ML112140119, Containment Liner Corrosion, Darrell Dunn, U.S.N.R.C, August 2011.

14. WMG Report 07-046D-RE-088, Zion Units I and 2 Activation Analysis And Component Characterization, January 2008, WMG Project 07-046D.

15. ComEd Zion Station Historical Site Assessment, Version 1 - August, 1999.

16. EBS-OR-35166, Eberline Case Narrative for Work Order # 13-01030-OR, February 13,2013.

17. EBS-OR-3561S, Case Narrative, Work Order # 13-04120-OR, June 27, 2013.

18. NUREG-1757 Vol. 2, Rev. 1, Consolidated Decommissioning Guidance Characterization, Survey, and Determination of Radiological Criteria, September 2006.

Page 37 of 92

TSD 14-022 Revision 0

9. ATTACHMENTS 9.1. Attachment 1 -Auxiliary Building Cs-137 Depth Profiles 9.2. Attachment 2 -Circular Plane and Exponential Circular Plane Efficiency Comparison Reports 9.3. Attachment 3 - Map of Auxiliary Building Floor and Wall Concrete Core Locations 9.4. Attachment 4 - Areal Distribution Input and Results Reports 9.5. Attachment 5 - Sensitivity to Density, Depth, and DRL Input and Output 9.6. Attachment 6 - Minimum Detectable Concentrations Page 38 of 92

ATTACHMENT 1 TSD 14-022 Auxiliary Building Cs-137 Depth Profiles Revision 0 and Interpolated Relaxation Lengths AUX 542 2A RHR Pump AUX 542 U1 Pipe Tunnel B105103-CJFCCV-001 B105105-CJFCCV-001 25000.0 mx 2Z6.42 120D0.0 20000.0 - Cs-137 10000.0 :s-137 y = 5831.7e-f1l6x y = 32700e - -1 7x Cmax 958.7 R2 = 0.6025 2 - 91 8000.0 N\

,15000.0 -

U DKL = 2.62 6000.0LRz31 10000.0 , 8436.9 4000.0 CDR0-5 32 4 5000.0 2000.0 0.0 4 0.01 0.0 2.0 4.0 6.0 8.0 10.0 12.0 0.0 5.0 10.0 15.0 Interp DRL 2.6 cm Interp DRL 2.7 cm Aux 542 U2 Hot Pipe Chase Aux 542 Common Area B105106-CJFCCV-001 BI0106-CJFCCV-001 3000.0 2000.0 Cn= 1350 Cs-137 1800.0 DRL20.95 DRL= 5.30 2500.0 - Cmax U-9 1600.0 1400.0 - -0P- -0.474x 2000.0 70-0223x 1200.0 - = U.8443 1500D.0 -rR 2

= 0.7865 91000.0 Y-CL 1 5 0 .0 n , ,9 2 2. 5S 600.0 -RL 693.7 400.0 500.0 200.0 0.0 0.0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 0.0 2.0 4.0 6.0 8.0 10.0 Interp DRL 4.7 cm Interp DRL 1.7 cm Page 39 of 92

ATTACHMENT 1 TSD 14-022 Auxiliary Building Cs-137 Depth Profiles Revision 0 and Interpolated Relaxation Lengths Aux 542 East Area B1O5111-CJFCCV-O01 1000.0

-137 Cmax 954.9 DRL= 2.27 800.0 600.0 V 873 34e"0-40'x CL R' = 0.8796 400.0 R35.

200.0 0.0 0.0 2.0 4.0 6.0 8.0 10.0 Interp DRL 1.8 cm Page 40 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Exponential Circular Plane - Aux Floor Cores Composite Page I of A Geometry Composer Report CANBERRA Date: Wednesday, April 29, 2015 - 16:17:20

==

Description:==

or Comment: 3 m source to detector, 5.8 cm thick, 2.75 DRL, 90 degree 50 mm collimator File Name: C:\GENIE2KMsocs\data\GEOMETRY\In-Situ*\EXPONENTCIRCULAR_PLANE\General ECP Model.geo Software: ISOCS Template: EXPONENT_CIRCULARPLANE, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 2' (16), CRPN = 24 (16)

Dimensions (cm)

No. Description d.1 d.2 d.3 d.4 d.5 dL6 Material Density ReL Cone 1 Side Wals 0 600 none 2 Layer 1 0 none 3 Layr 2 0 none 4 Layer 3 0 none S

6 Sowrce Lar Absorberl 5.8 0 2.7S g concret 2.3 1.00 7 Absorber2 B Source-etec 1 300 0 0 1 0 0 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\GENERAL ECP MODELiue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Wed Apr 29 16:14:33 2015 Original gis-file name: general ecp model.gis Template Type: exponent circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 kev 583.2 keV 661.6 keV 1173.2 keV1332.5 keVL460.7 keV_000.0 keV Reference 3.17E-06 4.30E-06 4.51E-06 4.38E-06 3.89E-06 3.33E-06 2.71E-06 2.58E-06 2.06E-06 1.96E-06 1.88E-06 1.59E-06 Page 41 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 1A RHR Pump B105101-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 2015 - 13:26:44

==

Description:==

Aux 542 1A RHR Pump Room B105101-01 90 degree 50 mm Colrimator Comment: Detector 5456, 3.0 m 13.97 cm Thick File Name: C:\GENIE2K1lsocs\data\GEOMETRYln-Situ\CIRCULARPLANE\Aux 542 1A RItR 032715.geo Software: ISOCS Template: CIRCULAR-PLANE, Version: (default)

Detector. 5456 Collimator: 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC,Pressure = 760 mm Hg, Relative Humidity - 30%

Integration: Convergence = 1.00%, MDRPN = 2ý (16), CRPN = 24 (16)

Dimensions (cm)

No. Description d.1 d.2 d.3 4.4 d.5 d.6 material Density Rel. Conc.

1 SideWalk 0 600 none 2 Layer I 1.27 Lcocrete 3198.70 2.3 3 Lam 2 1.27 concrete 2.3 6s4.40 4 Layer 3 1.27 e 23 L_,_ 492.30 S Law 4 1.27 Concrete 2.3 231.70 6 Layer S 1.27 m 2.3 128MI 0 7 Layer 6 1.27 concrete 2.3 118.58 8 Layer 7 1.27 concrete 2.3 14.30 9 Layer a 2.54 .3 4.10 10 Layer 9 2.54 _oncret 2.3 0.0 11 taWer 10 0 <none>

12 Amorberl 13 Absor__r2 14 SurceL-Detecir 300 0 0 0 0 Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 1A RHR 032715~001.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 13:25:37 2015 Original gis-file name: aux 542 la rhr 032715.gis Template Type: circular_plane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV ReferencE 4.06E-06 5.16E-06 5.27E-06 5.01E-06 4.37E-06 3.69E-06 2.95E-06 2.79E-06 2.18E-06 2.07E-06 1.97E-06 1.66E-06 Page 42 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 2A RHR Pump B105103-CJFCCV-O01 Page 1 of A Geometry Composer Report CANBERRA Date: Monday, Apnl 27, 2015 - 13:56:44

Description:

AUX 542 2A RHR_01 Comment: Total Thicknes 22.86 3.0 m 90 degree 50 mm collimator File Name: C:\GENIE2K\isuc\data\GE-OMETRY*n-Situ\CIRCULAR_PLANE\Aux 542 2A RHR 042715.geo Software: isocs Template: CIRCULAR-PLANE, Version: (default)

Detector:. 5456 Collimator:. 50mm-90d new (newISOCS 50mm side 90deg collimation (large hole collimator])

Environment: Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity - 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Description d, d.2 d.3 d.4 d.5 d.6 Material Density ReL Conc.

1 Sde wak 0 600 omne 2 Layer1 1.27 oncrete 2.3 22926.40 3 Lar 2 127 concrmat 2.3 12882.20 4 Lyer 3 1.27 coancret 23 6161.90 S Layer 4 1.27 cLncr, 2.3 2507.90 6 Layer S 1.27 concre 2.3 2023M00 7 Layer 1.27 canLta 2.3 1347.00 8 Layer 7 1.27 - 2.3 363."0 9 Layer 5.08 - cnm 23 124.30 10 Law 5 508 cancet 2.3 12.50 11 tamr10 3.81 cancet 2.3 1.40 12 Absorbed 13 Aaroelr2 14 smgceýDltzcr I 300 0 0 0 0 List of energies for efkciency alrve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 2A RHR 042715.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Mon Apr 27 14:00:09 2015 Original gis-file name: aux 542 2a rhr 042715.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keY Reference 3.25E-06 4.37E-06 4.57E-06 4.41E-06 3.89E-06 3.33E-06 2.71E-06 2.57E-06 2.04E-06 1.94E-06 1.86E-06 1.57E-06 Page 43 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 2B RHR B105104-CJFCCV-001 Page 1 of Geometry Composer Report A

CANBERRA Date: Monday, April 27, 2015 - 14:15:59

==

Description:==

Aux 542 2B RHR B1051041_01 Comment, 3.0 m source to detector, 90 degree S0 mm collimator File Name: C:\GENIE1bsocr\dataoGEOMETRYhIn-SibtucIRCULARPLANE\Aux 542 2B RHR_01 042715.geo Software ISOCS Template: CIRCULAR-PLANE, Vernion: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg coriamation [large hole collimator])

Environment, Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 2e (16), CRPN = 24 (16)

Dimensions (cm)

No. Description &1 d.2 d.3 ,.4 d.5 d.6 Material Density ReL Cone.

1 Side Wali 0 600 none 2 Layerl 1.27 ses 2.3 Z_ 7.00 3 Lay 2 1.27 concrete 2.3 0.20 4 Layer 3 0 <none>

5 Layer 4 0 <none>

6 Layer 5 0 <none>

7 Layer6 0 <row*>

8 Layer7 0 <none>

9 Laye a 0 <none>

10 Layer 9 0 _ <lon,.

11 Layer 10 0 <nonrae>

12 Absorb1_l 13 Absoter2 14 Sou'ce-.tactr 300 0 0 0 0 List of ene.gies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 500.0 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 5422B RHR_01 042715.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Mon Apr 27 14:15:38 2015 Original gis-file name: aux 542 2b rhr-01 042715.gis Template Type: circularplane efficiency of all Models run (Efficiency)

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 500.0 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 5.55E-06 6.68E-06 6.64E-06 6.19E-06 5.30E-06 4.40E-06 3.71E-06 3.23E-06 2.45E-06 2.31E-06 2.20E-06 1.82E-06 Page 44 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 U1 Pipe Tunnel B105105-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Wednesday, April 29, 2015 - 13:35:39

==

Description:==

Aux Ul Pipe Tunnel 8105105_01 3.0 m 90 degree 50 mm collimator Comment: 0-49.53 concrete thicimess File Name: C:\GENIE2Kciso\data\GEOMETRY\In-Situ\CIRCULARPLANE\Aux 542 U1 Pipe Tunnel NU 042815.geo Software: SCS Template: CIROJLARPLANF, Version: (default)

Detector: 5456 ColIimator. 50mm-9od new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment- Temperature = 22 OC,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 21 (16), CRPN = 24 (16)

Dimensions (cm)

No. Des-rption d.1 d.2 .3 .4 d.3 d6 Material Density Rel. Coat.

1 Sde Walls 0 600 none 2 Layer 1 1.27 _ _cfet 2.3 998.70 3 Layff 2 1.27 coere 2.3 7392.S0 4 Layer3 1.27 _cnoste 2.3 1613.70 s Layer 4 1.27 a ,_ t 2.3 L_ 1869.00 6 Law 5 1.27 2.3 M 2153.00 7 Layw 6 1.27 t 2.3 1438.80 8 Layer 7 1.27 cnast 2.3 1203.90 9 Lar*e8 12.7 _onasta 2.3 70L72 10 Layer 9 12.?7 ca'ea 2.3 7M.68 11 Layer10 16.24 2.3 L 9.03 t2 Absorbs1_

13 Absoaer2 14 S1zrOetaca 300 0 0 0 0 1 List of energies for efficlency cure generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 Ul PIPE TUNNEL NU 042815"001.iue Report was generated by WUE with program function: <Sensitivity>

Project calculation was started at: Wed Apr 29 13:25:03 2015 Original gis-file name: aux 542 ul pipe tunnel nu 042815.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keY 122.1 keY 165.9 keY 238.6 keV 351.9 keV 583.2 keY 661.6 keV 1173.2 keV1332.5 keV1460.7 keV?000.O keV Reference 2.10E-06 2.90E-06 3.07E-06 2.99E-06 2.67E-06 2.32E-06 1.92E-06 1.84E-06 1.51E-06 1.45E-06 1.39E-06 1.20E-06 Page 45 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 U2 Hot Pipe Chase B105106-CJFCCV-001 Page I of Geometry Composer Report A

CANBERRA Date: Tuesday, April 28, 2015 - 14:07:21

==

Description:==

Aux 542 U2 Hot Pipe Chase NU 81051061; 3.0 m 0-43.2 Thickness Comment: 90 degree 50 mm collimator File Name: C:\GENIE2K\isoss\data\GEOMETRY\1n-Situ\CIRCULARPLANE\U2 Hot Pipe Chase_01 NU 042815.geo Software: IsoCs Template: CIRCULARPLANE, Version: (default)

Detector. 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Desa"ipion 41.1 d.2 d.3 d.4 d.5 &6 Material Density Rel. Cone.

1 STdeWall 0 600 none 2 Layer1 1.27 concrete 2.3 2506.90 3 Layer 2 1.27 2.3 Lconree 2091.60 4 Layer 3 1.27 concrete 2.3 2027.30 5 Layer 4 1.27 concrete 2.3 1087.80 6 Layer S 1.27 2.3 Lconce 41630 7 Layer 6 1.27 concrt 2.3 128.60 8 Layer 7 1.27 _conort 2.3 819.30 9 Layer 8 11.43 concrete 2.3 162.63 10 L 9 11.43 2.3 Lconcr~ 11.67 11 Layer10 1L43 concrete 23 0.91 12 Absorberd 13 Absorber2 14 Source-Detie: 300 0 0 0 0 1 1 Ust of energies for effidency curve generation 59.5 88.0 122.1 165.9 2386 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\U2 HOT PIPE CHASE_01 NU 042815.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 28 15:20:26 2015 Original gis-file name: u2 hot pipe chase_01 nu 042815.gis Template Type: circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keY 238.6 keV 351.9 keV 583.2 keV 661.6 keV 1173.2 keV1332.5 keVL460.7 keVZ000.0 keV Reference 1.78E-06 2.62E-06 2.87E-06 2.84E-06 2.59E-06 2.28E-06 1.93E-06 1.84E-06 1.54E-06 1.48E-06 1.43E-06 1.24E-06 Page 46 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 U2 Hot Pipe Chase B105106-CJFCCV-002 Page 1 of Geometry Composer Report A

CANBERRA Date: Tuesday, April 28, 201S - 15:56:47

==

Description:==

Aux 542 U2 Hot Pipe Chase B105106_02 3.0 m, 90 degree 50 mm collimator Comment: Thickness 0-2.54 Detector 5456 File Name: C:\GENIE2K~iocsdataXGEOMETRYXIn-Situ\CIRCULARPLANE\Aux 542 U2 Hot Pipe Chase_02 042815.gec Software: LSOCS Template: CIRCULARPLANE, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN - 24 (16)

Dimensions (cm)

No. Desction d1 d.2 d.3 cL4 d.5 ,46 Material Density Rel. Conc.

1 Side Wels 0 600 none 2 Layer 1 1.27 2.3 Lconree 2142.20 3 Layer 2 1.27 concret 2.3 0.2S 4 Layer 3 0 -<none, S Layer 4 0 <none>

6 Layer S 0 1 <none>

7 Layer 6 0 <none>

9 Laym 7 0 <rone>

9 Layer 6 0 1 <none>

10 Layer 9 0 <none>

11 Layer I0 0 <noe-12 Absarberl 13 Absorber2 14 Source-etecr 300 0 0 0 o0 1 1 List of enegies for effidency curve generation S9.5 88.0 122-1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 U2 HOT PIPE CHASE_02 042815.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 28 15:46:32 2015 Original gis-file name: aux 542 u2 hot pipe chase_02 042815.gis Template Type: circular_plane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keY 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keV L173.2 keVL332.5 keVL460.7 keVZOOO.0 keV Reference 5.65E-06 6.78E-06 6.71E-06 6.25E-06 5.35E-06 4.44E-06 3.46E-06 3.25E-06 2.47E-06 2.32E-06 2.21E-06 1.83E-06 Page 47 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 HUT B105107-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 201S - 14:19:23

==

Description:==

Aux HUT B105107._01; 3.0 m 90 degree 50 mm collimator Comment:. Thickness: 35.56 cm Detector 5456 File Name: C:\GENIE2K\Iocs\data\GEOMETRYXIn-Situ\CIRCULAR_PLANE\Aux 542 HUT. 02 032415.geo Software: ISOCS Template: CIRCULAR-PLANE, Version: (default)

Detector. 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation Plarge hole collimatorJ)

Environment: Temperature - 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence - 1.00%, MDRPN = 24 (16), CRPN - 24 (16)

Dimensions (cm)

No. Desription d.1 d.2 d.3 d.4 d.5 d.6 Material Density ReL Cone.

1 side Wals 0 600 none 2 Layer I 1.27 conrete 2.3 89.*0 3 Layr2 1143 concete 2.3 1.00 4 Layer 3 11.43 _concete 2.3 1.80 5 Layer 4 11.43 c 2.3 0.60 6 Layers 0 1 1 none 7 Layw 6 0 1 none 8 Layer 7 0 <none>

9 Layer8 0 <none>

10 Layer 9 0 <none>

11 Layer 10 0 <rnone>

_ Absorberi 13 Absmber2 14 Soueter 300 0 0 0 0 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 HUT_02 032415-001.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 14:21:09 2015 Original gis-file name: aux 542 hut_02 032415.gis Template Type: circularplane efficiency of all Models run (Efficiency]

Item Oesc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 4.23E-06 5.11E-06 5.08E-06 4.75E-06 4.08E-06 3.40E-06 2.67E-06 2.52E-06 1.94E-06 1.83E-06 1.75E-06 1.46E-06 Page 48 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 Common Area B105108-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Wednesday, April 29, 2015 - 10:52:09

==

Description:==

Aux 542 Common Area NU B1OS108_01 3.0 m 90 degree 50 mm collimator Comment Thickness 0- 16,51 an Detector 5456 File Name: C:\GENIE2Kkisocs~data\GEOMETRYNIn-Situ\CIRCULARPLANE\Aux 542 Common 01 NU042815.geo Template: CIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Descption d.1 d.2 d.3 dL4 d.5 d4.6 Hate4al Density ReL Conc.

1 side Wais 0 600 nanone 2 Lrer1 1.27 concree 2.3 1885.00 3 Laer 2 1.27 _condce 2.3 543.70 4 Layer 3 1.27 conrWeM 2.3 143.S0 5 law 4 1.27 caraete 2.3 62.40 6 Layer S 1.27 concret 2.3 55.90 7 Layer 6 5.08 cncete 2.3 23.60 8 Layer 7 6.35 concete 2.3 1.50 9 Layer 8 00 _______ _ __ <none>

<none> ___ ___

10 Laye9 11 Layer 10 0 <none>

12 Absorber_

13 ber2 Abaodsu co

_00 300 0

_ 0 0 _ 0 0 _____________ ____0__

14 Soree*

Ust of energies for effidency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 COMMON 01 NU042815.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Wed Apr 29 10:45:08 2015 Original gis-file name: aux 542 common 01 nu042815.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keVl.173.2 keVL332.5 keVL460.7 keV!.000.0 keV Reference 4.22E-06 5.36E-06 5.45E-06 5.16E-06 4.49E-06 3.79E-06 3.01E-06 2.85E-06 2.21E-06 2.10E-06 2.00E-06 1.68E-06 Page 49 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 Common Central Area B105108-CJFCCV-002 Page I of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 2015 - 14:35:35

==

Description:==

Aux 542 Common Area 02 8105106-02 90 degree 50 mm colifmator Comment: Thickness 0-10.16 File Name: C:\GENTE2K\*socs\data\GEOMETRY*1n-Situ\CaRCULARPLANEAux 542 Common Area 02 032415.geo Software: ISOCS Template: CIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Desription dl d.2 d.3 4.4 d.5 d46 Material Density Rel. Conc.

1 Side Wals 0 600 omne 2 Layer 1 1.27 concrete 2.3 87.90 3 La 2 1.27 concree 2.3 19.40 4 Layer 3 1.27 conoete 2.3 8.80 S Layer 4 1.27 Concrete 2.3 15.00 6 Layer 5 1.27 concree 2.3 20.70 7 Layw 6 1.27 concrete 2.3 7.80 8 Layer 7 2.54 concrete 2.3 1.SO 9 Layer 8 0 none 10 Layer 9 0 <none>

11 Layer 10 0 <none>

12 Absrberl 13 Absober2_

14 Sowce-Deteclor 300 0 0 0 0 1 1 1 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 COMMON AREA_02 032415-003.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 16:22:24 2015 Original gis-file name: aux 542 common area_02 032415.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 3.34E-06 4.31E-06 4.45E-06 4.26E-06 3.75E-06 3.21E-06 2.60E-06 2.48E-06 1.97E-06 1.88E-06 1.80E-06 1.53E-06 Page 50 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 Common Central Area B105108-CJFCCV-003 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 2015 - 14:41:49

==

Description:==

Aux 542 Common Area 8105108+03; 3.0 m 90 degree 50 mm collimator Comment: 7.62 Thickness, Detctor 5456 File Name: C:\GENIE21isocs\dataXGEOMETRY\In-Situ\CIRCULARPLANE\u 542 Common Area.03 032515.geo Software: ISOCS Template: CIRCULAR-PLANE, Version: (default)

Detector. 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (an)

No. Desc'iprtion d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Cone.

1 Side Wals 0 600 none 2 Layer 1 1.27 onoate 2.3 1215.00 3 Lay 2 3.81 2.3 Mconnre 1.90 4 Layer 3 0 -moe S Law 4 0 <noe>

6 Layer 5 0 <rne>

7 Lyer 6 0 <none>

8 Layer 7 0 <none>

9 Layer 8 0 <none>

10 Law 9 0 <none>

11 Layer 10 0 <none>

12 Absorber1 13 Absorber2 14 Source--Dflt-or 300 0 0 0 0 List of energies for efficiency carve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 COMMON AREA_03 032515'003.iue Report was generated by WUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 16:27:34 2015 Original gis-file name: aux 542 common area_03 032515.gis Template Type: circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keY 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 5.63E-06 6.75E-06 6.70E-06 6.23E-06 5.34E-06 4.43E-06 3.45E-06 3.25E-06 2.46E-06 2.32E-06 2.21E-06 1.83E-06 Page 51 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane -Aux 542 Common Elevator Shaft B105108-CJFCCV-004 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 2015 - 14:51:09

==

Description:==

Aux 543 Common Area Elevator Shaft B015108_04 Comment:

File Name: C:\GENIE2Kwmocs\data\GEOMETRY*In-Situ\CIRCULARP.PLANE\Aux 542 Common Area_04 032515.geo Software: ISOCS Template: CIRCULAR_PLANE, Version: (default)

Detector. 5456 Collimator. SOmm-90d new (newiSOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature - 22 oC, Pressure - 760 mm Hg, Relative Humidity - 30%

Integration: Convergence = LOO%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Descrition d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.

1 Sie Walk 0 600 nome 2 Layer 1 1.27 L 2.3 111.90 3 Layer2 3.81 onave 2.3 0.10 4 Laym 3 0 mnone>

S LaM 4 0 <no">

6 Layer S 0 <mone>

7 Layer 6 0 <none>

0 L 7er? 0 <none>

9 Layer8 0 <mone>

10 Layer 9 0 <none>

11- Lim10 0 <none>

12 Absoreril 13 kbe'2 14 sMe0@b.W 3W00

_ 0 0 0 0 Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 COMMON AREA04 032515-001.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 14:53:03 2015 Original gis-file name: aux 542 common area_04 032515.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 kev Reference 5.64E-06 6.76E-06 6.70E-06 6.24E-06 5.34E-06 4.43E-06 3.45E-06 3.25E-06 2.47E-06 2.32E-06 2.21E-06 1.83E-06 Page 52 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane -Aux 542 South Area B105109-CJFCCV-001 Page 1 of Geometry Composer Report A

CANBERRA Date: Tuesday, Apri 21, 2015 - 15:00:47

==

Description:==

Aux 542 South Area B105109_01; 3.0 m 90 degree 50 mm collimaor Comment- 1.27 cm Thick, File Name: C:\GENIE2KYJsocs\data\GEOMETRY\In-Situ\CIRCULARPLANE\Aux 542 South Area 01 032515.geo Software: ISOCS Template: CIRCULARPLANE, Version: (default)

Detector- 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C, Pressure - 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (c)n)

No. Desaription d.1 d.2 d.3 d.4 dl. 4.6 "MWeri Density Rl. cone.

1 Side Was 0 600 none 2 Laver1 1.27 amret 2.3 1022.60 3 Ler 2 0 <none>

4 Layer 3 0 <none>

S ILaym4 0 <none>

6 Law S 0 _<f.n>n 7 Laiw 6 0 <nose>

8 Lay7 0 <none>

9 Lame98 0 <none>

<noe>

10 Layer9 0 11 Layw10 0 <none>

12 Absmberl 13 bsrbe-2 Alz 14 smurce..0M 300 0 0 0 0 Ust of energies for efficiency cure generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 SOUTH AREA.01 032515-001.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 15:01:53 2015 Original gis-file name: aux 542 south area_01 032515.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 key 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 5.65E-06 6.78E-06 6.71E-06 6.25E-06 5.35E-06 4.44E-06 3.46E-06 3.25E-06 2.47E-06 2.32E-06 2.21E-06 1.83E-06 Page 53 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 North Area B105110-CJFCCV-001 Page 1 of Geometry Composer Report A

CANBERRA Date: Tuesday, April 21, 2015 - 15:05:54

==

Description:==

Aux 542 North Area B105110_01; 3.0 m 90 degree 50 mm collimaor Comment- 1.27 cm Thick, File Name: C:\GENIE2KMisocs\dataXGEOMETRY~in-Situ\CIRCULAR_PLANEAux 542 North Area_01 032515.geo Software: ISOCS Template: CIRCULAR.PLANE, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment. Temperature - 22 *C, Pressure - 760 mm Hg, Relative Humidity - 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (am)

No. ieso~lon '41 &.2 d d.4 d- d46 Mateal Density Rel Conc.

1 S& Wails 0 600 rwne 2 Layer 1 1.27 connmm 2.3 1563.40 3 Layer2 1.27"/ co,*re 2.3 0.60 4 Layer 3 0 <rmfle, S Layer 4 0 <none>

6 Layer S 0 <none>

7 Layer 6 0 I I I <none>

8 Layer 7 0 <none>

9 Lay a8 0 <none>

10 Layer 9 0 <none>

11 Layer10 0 <none>

12 Absorberl 13 Absorber2 14 Scurce-IX-Maor 300 0 0 0 0 1 Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 NORTH AREA.01 032515'-002.lue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 15:07:03 2015 Original gis-file name: aux 542 north area_01 032515.gis Template Type: circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keY 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 5.65E-06 6.77E-06 6.71E-06 6.25E-06 5.35E-06 4.44E-06 3.46E-06 3.25E-06 2.47E-06 2.32E-06 2.21E-06 1.83E-06 Page 54 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane - Aux 542 North Area B105110-CJFCCV-002 Page 1 of A Geometry Composer Report CANBERRA bate: Tuesday, April 21, 2015 - 15:14:29

==

Description:==

Aux 542 North Area B105110_02; 3.0 m 90 degree 50 mm coflimaor Comment:. 1.27 cm Thick, File Name: C:\GENIE2K*Isocs\data\GEOMETRY*In-Situ\CIRCULARPLANE\Aux 542 North Area_02 032515.geo Software: ISOCS Template: CIRCULARPLANEF, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collmation Blarge hole collimator])

Environment: Temperature - 22 OC,Pressure = 760 mm Hg, Relative Humidity - 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

, DesN.dio .s d.2 d.3 &V 4 d. d.6 Kateial Desiy ReLCone.

I S&iwdas 0 600 none 2 Layer 1.27 coneur 2.3 44.00 3 Laye2 0 none 4 LTeer3 0 ammie<nn S Laym-4 0 _<none, 6 Les 0o <none>

7 Laye'6 0 <none>

8 Layer7 0 _ <none>

9 Las 0 <none>

10 Layw 9 0 <none>

11 layer 10 0 <none>

12 Absorel 13 Abwb*er2 14 e cnr 300 0 0 0 0 1 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 3S1.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX 542 NORTH AREA_02 032515~~003.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 21 15:19:43 2015 Original gis-file name: aux 542 north area_02 032515.gis Template Type: circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keY 88.0 keY 122.1 keX 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keY Reference 5.65E-06 6.78E-06 6.71E-06 6.25E-06 5.35E-06 4.44E-06 3.46E-06 3.25E-06 2.47E-06 2.32E-06 2.21E-06 1.83E-06 Page 55 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane -Aux 542 East Area B105111-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 28, 2015 - 16:19:18

==

Description:==

Aux 542 East B105111_01 3.0 m, 90 degree 50 mm collimator Comment: Thickness2o.32 cm File Name: C:\GENIs2K*iocs\data\GEOMETRY\In-Situ\CIRCULARPLANE\Aux East 54201 042815.geo Software: ISOCS Template: CIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence - 1.00%, MDRPN - 24 (16), CRPN - 24 (16)

Dimensions (cm)

No. Desripti.o d.1 d.2 1 d.3 4 d. 6 it ReL Cone.

Dnateial I & Wals 0 600 none 2 Layer I 1.27 2.3 Monowe954.95 3 Layer 2 1.27 osnrem 2.3 322.70 4 Lay 3 1.27 coMKoae 2.3 122.00 S Layer 4 1.27 conono 2.3 260.33 6 Layer S 1.27 onoe 2.3 91.65 7 Layer 6 1.27 onlrete 2.3 S6.ID 8 Layr 7 1.27 awansm 2.3 2.90 9 Layer 8 3.81 concwew 2.3 12.53 10 Laye 9 3.81 2.3 Lnoreue 2.72 11 *Lay 10 3.81 2.3 Lacre 059 12 Absorbed 13 Absorber2 14 Smot,-0etem 300 0 0 0 0 Ust of energies for efficiency curve generation 59.5 88.0 122.1 16S.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:%GENIE2K\ISOCS\DATA\lBATCH\AUX EAST 542_01 042815.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 28 16:14:23 2015 Original gis-file name: aux east 542_01 042815.gis Template Type: circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keY 88.0 keY 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 3.26E-06 4.28E-06 4.45E-06 4.27E-06 3.77E-06 3.22E-06 2.62E-06 2.49E-06 1.98E-06 1.89E-06 1.81E-06 1.53E-06 Page 56 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane -,Aux 542 U1 ABEDCT B105113-CJFCCV-001 Page 1 of A Geometry Composer Report CANBERRA Date: Tuesday, April 21, 2015 - 15:37:04

==

Description:==

AUX 542 ABEDCT_01; 3.0 m 90 degree 50 mm collimator Comment* Thickness 0- 10.16 Detector 5456 File Name: C:\GENIE2KVisocs\data\GEOMETRY\In-Situ\CIRCULAR_PLANE\Aux ABEDCT_01 032515.geo Software: ISOCS Template: CIRCULARPLANE, Version: (default)

Detector. 5456 Collimator. 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment. Temperature = 22 0C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN - 24 (16)

Dimensions (cm)

DesaoRioa d.1 d.2 d ZL 45 d Matedria& Oensity ReL Conc.

1 Si Waft 0 600 ron" 2 Law 1.27 onet 2.3 4119.10 3 LAV, 2 1.27 a 2.3 165.20 4 Layr 3 1.27 ancwe 2.3 39.90 5 Law,4 1.27 e 2.3 8.00 6 Laver S 580I conawe 2.3 0.80 7 Lamr6 0 nroe 8 Layer 7 none 9 L 8yerS 0 noere 10 Lamer9 0 nor" 11 Lf 10 0 none 12 Abswberl 13 Absmrbw2 14 SareU!tWr 300 0 0 0 0 Ust of energies for effidency cu.ve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX ABEDCT-01 032515"001.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Tue Apr 2115:38:38 2015 Original gis-file name: aux abedct_01 032515.gis Template Type: circular plane efficiency of all Models run (Efficiency)

Item Desc Item Model 59.5 keV 88.0 key 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 583.2 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keY Reference 5.45E-06 6.58E-06 6.55E-06 6.11E-06 5.24E-06 4.36E-06 3.40E-06 3.21E-06 2.44E-06 2.30E-06 2.18E-06 1.81E-06 Page 57 of 92

ATTACHMENT 2 TSD 14-022 Circular Plane and Exponential Circular Plane Efficiency Comparison Reports Revision 0 Circular Plane -.Aux 542 U1 ABEDCT B105113-CJFCCV-002 Page 1 of A Geometry Composer Report CANBERRA Date: Monday, April 27, 2015 - 14:35:57

==

Description:==

Aux 542 ABEDCT B105113_- 02 Comment: 3.0 m source to detector, 90 degree 50 mm collimator File Name: C:\GENIE2KdL.ocEdata\GEOMETRYln-Sibu\CIRCULARLA NE\Aux ABEDCT_02 042715.geo Software: ISOCS Template: CIRCULAR. PLANE, Version: (default)

Detector. 5456 Collimator: S0mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence - 1.00%, MDRPN - 24 (16), CRPN - 24 (16)

Dimensions (cm)

No. Description TF1 d 52

d. d.4 d.5 &6 Matera Deask ReL Cone.

1 S Wals 0 600 none 2 Layfer1 1.27 Lcoow 195.20 2.3 3 LaM 2 1.27 2.3 2_are, 3S4.10 4 Lay 3 1.27 _cono 2.3 22f9.0 S Lae* 4 1.27 _ 2.3 95.10 6 Layer s 1.27 ccoaet 2.3 65.40 LayeJ 6 1.27 con= L.3 18W10 8 Layer 7 1.27 conarco 2.3 6.00 9 Lay 8SAcncrete .08 2.3 0.0 10 Layer 9 0 <nonef>

11 Laywer10 0 <rn@>

12 Absorberl 13 AbsotbeY2 14 sre.Detedur 300 0 0 0 0 1 1 Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 500.0 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\AUX ABEOCT_02 042715.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Mon Apr 27 14:35:24 2015 Original gis-f ile name: aux abedct_02 042715.gis Template Type: circularplane efficiency of all Models run [Efficiency)

Item Desc Item Model 59.5 keV 88.0 keV 122.1 ke\ 165.9 ke\ 238.6 ke\ 351.9 ke\ 500.0 ke\ 661.6 ke\ 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 4.16E-06 5.30E-06 5.40E-06 5.12E-06 4.46E-06 3.77E-06 3.22E-06 2.B4E-06 2.21E-06 2.10E-06 2.OOE-06 1.68E-06 Page 58 of 92

ATTACHMENT 3 TSD 14-022 Map of Auxiliary Building Floor and Wall Concrete Core Locations Revision 0 1*

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ac1ota-s\~j 2bi.9"j  ! I0 j la.aa.

US63132 11--

@LG Page 59 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite Full 28 m2 Zone Page 1 of A Geometry Composer Report CANBERRA Date: Thursday, April 30, 2015 - 13:19:04

==

Description:==

General Model 28.3 m^2 FOV Comment: 5.8 cm, DRL 2.75, Source to Det 3.0 m 90 degree 50 mm Collimator File Name: C:\GENIE2K\isocs\data\GEOMETRY\In-Sibu\EXPONENTCIRCULJAR...\General Model 28 m^2 043015.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collination [large hole collimator])

Environment: Temperature = 22 *C,Pressure = 760 mm Mg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (an)

No. Desiption &1 I 1d2 d.3 I4 d.5 d46 mateial Der'siy ReL Cone.

I & Waft 0 600 none 2 tay 1 0 none 3 L"W2 0 none Laye 3 0 none S.ce L 5,8 0 2.75 _ 2.3 1.00 6 Absorbedl 7 Absorber2 8 SOUMM(tecr 300 0 0 0 0 1 1 1 J Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\GENERAL MODEL 28 M^2 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 13:15:35 2015 Original gis-file name: general model 28 mA2 043015.gis Template Type: exponent circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keV 1173.2 keVL332.5 keVL460.7 keVZ000.0 keV Reference 3.17E-06 4.30E-06 4.51E-06 4.38E-06 3.89E-06 3.33E-06 2.71E-06 2.58E-06 2.06E-06 1.96E-06 1.88E-06 1.59E-06 Page 60 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite I M2 No Offset Page 1 of Geometry Composer Report A

CANBERRA Date: Thursday, Apil 30, 2015 - 13:51:53

==

Description:==

1.0 M^2 to 28 mA2 043015 Comment: 5.8 DRL 2.75 Source to Det 3.0 m 90 degree 50 mm collimator File Name: C:\GENIE2K\isocs\data\GEOMETRY\In-Situ\EXPONENTCIRCJLAR PLANE\I.0 m^2 to 28 m^2 043015.ge Software: ISOCS Template: EXPONENTaCRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No.I Descriptiomnl d.2 d.3 &14 d-5 4L6 Material Density ReL Cone.

1 Sde Walls 0 112.84 none 2 Layr 1 0 none 3 Laar2 0 none 4 Layer 3 0 none S Sroe Layer S.08 0 2.75 onaxe 2.3 1.00 6 Absoerlbe 7 Abworb_

8 Somm-0etec 1 300 189 0 189 0 11 Ust of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 500.0 66L6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\1.0 MA2 NO OFFSET 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 10:38:24 2015 Original gis-file name: 1.0 m^2 no offset 043015.gis Template Type: exponent circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keY 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keV L173.2 keV1332.5 keVL460.7 keVZO00.0 keV Reference 6.OOE-06 8.19E-06 8.69E-06 8.81E-06 8.32E-06 7.66E-06 6.62E-06 6.34E-06 5.02E-06 4.75E-06 4.52E-06 3.77E-06 Page 61 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite I rm12 122 cm Offset Page 1 of A Geometry Composer Report CANBERRA Date: Thursday, April 30, 2015 - 10:01:58

==

Description:==

1.0 m^2 Offset 121.8 cn 043015 Comment: 5.8 cn, DRL 2.75 Souite to Detr 3.0 m, 90 degree 50 mm collimator File Name: C:\GENIE2K\isocs\data\GEOMETRY\In-Situ\EXPONENT.CIRCULAR...\1.0 m^2 offset 122 cm 043015.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 oC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 2' (16), CRPN = 24 (16)

Dimensions (cm)

No Description R&._ d.2 d.3 d.4 d._ 4.6 Mat"Mla Density ReL Conc.

1 Side Wab 0 112.84 none 2 1 - 0_ _ none 3 Laywe 2 0 none 4 Layer3 0 none SSource Laer L(B 0 2.7S conrele 2.3 1.00) 6 Absorberi 7 Abscrber2 8 SOUns- c 300 1 121.79 0 12.L79 0 1 1 1 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\1.0 MA2 OFFSET 122 CM 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 10:01:18 2015 Original gis-file name: 1.0 mA2 offset 122 cm 043015.gis Template Type: exponent circular_plane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keV 1173.2 keVL332.5 keVL460.7 keV_000.0 keV Reference 4.66E-06 6.33E-06 6.67E-06 6.59E-06 5.97E-06 5.22E-06 4.37E-06 4.18E-06 3.41E-06 3.23E-06 3.09E-06 2.62E-06 Page 62 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite 1 m-2 244 cm Offset Page I of A Geometry Composer Report CANBERRA Date: Thursday, April 30, 2015 - 10:16:22

==

Description:==

1.0 m^2 Off*set 243.6 an 043015 Comment: 5.8 an, DRIL 2.75, Source to Det 3.0 m, 90 degree 50 mm collimator File Name: C:\GENIE2K1isocs\data\GEOMETRYNIn-Situ\EXPONENTCIRCULAR...\1.0 m^22 Offset 244 cm 043015.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector: 5456 Collimator. 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimatorJ)

Environment: Temperature = 22 OC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. ! Description di &2 d.3 d.4 d.3 &6 Material Density ReL Conc.

1 side Wal 0 112.84 nanone SLtaysr 1 0 none 3 1ay 2 0 none 4 Layer 3 0 none s Srce Layer 5.00 0 2.7S conree M.3 1.00 6 Absorber_

8a I Sourm4Det 300 243.58 0 243.$8 0 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\1.0 MA2 OFFSET 244 CM 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 10:15:28 2015 Original gis-file name: 1.0 m^2 offset 244 cm 043015.gis Template Type: exponent circularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keY 88.0 keY 122.1 keY 165.9 keY 238.6 keY 351.9 keV 583.2 keV 661.6 keY 1173.2 keVL332.5 keVL460.7 keV_000.0 keV Reference 2.45E-06 3.33E-06 3.47E-06 3.28E-06 2.81E-06 2.30E-06 1.79E-06 1.68E-06 1.32E-06 1.26E-06 1.20E-06 1.02E-06 Page 63 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite 0.5 M2 No Offset Page I of A Geometry Composer Report CANBERRA Date: Thursday, April 30, 2015 - 13:53:08

==

Description:==

0.5 mA2 Intersect to 28 m^2 Comment- 5.8 an, DPL 2.75 3.0 m source to det 90 degree 50 mm collimator File Name: C:\GENHE2KVisocs data\GEOMETRY\In-Situ\LE=PONENTCIRCULARP...\O.5 m^2 to 28 mA2 043015.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment* Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Desoription C1.1 d.2 d.3 dI.4 d.5 d.6 Material Density Ao 1 Side Wals 0 79.79 none 2 Layer 1 0 none 3 Lam 2 0 none 4 Lay 3 0 none S Source Layer S.8 0 2.7S __ onrew 2.3 1.i0 6 Absorberd 17 o eAb eorb3s2 18 Sourae-Oetomur 1 3001 186 1 0 1 116 - 07 1 Ust of energies for effilency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C;\GENIE2K\ISOCS\DATA\BATCH\0.5 MA2 NO OFFSET 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 13:03:48 2015 Original gis-file name: 0.5 mA2 no offset 043015.gis Template Type: exponentcircularplane efficiency of all Models run [Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keY 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keV 1173.2 keVL332.5 keVL460.7 keVZOO0.0 keV Reference 6.03E-06 8.26E-06 8.79E-06 8.94E-06 8.49E-06 7.88E-06 6.83E-06 6.54E-06 5.16E-06 4.88E-06 4.64E-06 3.86E-06 Page 64 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite 0.5 rM2 130 cm Offset Page I of A Geometry Composer Report CANBERRA Date: Thursday, April 30, 2015 - 12:34:43

==

Description:==

0.5 m^2 Offset 130.cm 042015 Comment: 5.8, cm DRL 2.75, 3.0 m source to det,90 degree 50 mm collimator File Name: C:\GENIE2Klsoc\data\GEOMETRYIln-Situ\EXPONENT.C1ROJLAR...\0.5 m^2 Offset 130 cm 043015.geo Software: ISOCS Template: EXPONENT._CIRCULAR.PLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newlSOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 *C, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No.I Desaiptioa d.1 d.2 d.3 dL4 d-5 MK Hateral De-*ity ReL Cone.

1 i Wals 0 79.79 none 2 Layer 1 0 none 3 Layer 2 0 none 4 Layr3 0 none 5 Source Layer 5.8 0 2.75 cncete 2.3 1.00 6 Absorberl 7 Absorber2 8 Sourca.ector 300 130.01 0 130.01 0 _ _ _ _

List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 238.6 351.9 500.0 661.6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\0.5 MA2 OFFSET 130 CM 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 12:34:09 2015 Original gis-file name: 0.5 mA2 offset 130 cm 043015.gis Template Type: exponent circularplane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 500.0 keV 661.6 keV 1173.2 keVL332.5 keVL460.7 keVZOOO.0 keV Reference 4.38E-06 5.96E-06 6.30E-06 6.22E-06 5.62E-06 4.89E-06 4.32E-06 3.91E-06 3.20E-06 3.04E-06 2.92E-06 2.48E-06 Page 65 of 92

ATTACHMENT 4 TSD 14-022 Areal Distribution Input and Results Reports Revision 0 Aux Floor Cores Composite 0.5 mV 2 260 cm Offset Page 1 of Geometry Composer Report A

CANBERRA Date: Thursday, April 30, 2015 - 12:43:51 Desription: 0.5 m^2 Offet 260 cm 043015 Comment* 5.8,cm, DRL 2.75, 3.0 m source to det, 90 degree 50 mm collimator File Name: C:\GENEE2KAisocs\data\GEOMETRYXIn-Situ\EXPONENTCIROJLAIR..A0.5 m^2 Offset 260 cm 043015.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector: 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 0C4 Pressaire = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 2' (16), CRPN = 24 (16)

Dimenions (cm)

No. Descrption d.I d.2 d.3 dL4 d.5 4L6 material Dens" ReL Conc.

1 Sde Wat 0 79.79 none 2 Laver I 0 none 3 Layer 2 0 none 4 Layer 3 0 none SSource tamer 5.8 0 2.7S _ 2.3 1.00 6 Absorberl 7 Absorbw2 8 Scurce-D"Racz1 300 260.1 0 260.1 0 Listof energies for efficiency curve generation 59.5 B8.0 122.1 165.9 238.6 351.9 583.2 66L6 1173.2 1332.5 1460.7 2000.0 Results Report Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\0.5 MA2 OFFSET 260 CM 043015.iue Report was generated by IUE with program function: <Sensitivity>

Project calculation was started at: Thu Apr 30 12:45:07 2015 Original gis-file name: 0.5 mA2 offset 260 cm 043015.gis Template Type: exponentcircular_plane efficiency of all Models run (Efficiency]

Item Desc Item Model 59.5 keV 88.0 keV 122.1 keV 165.9 keV 238.6 keV 351.9 keV 583.2 keV 661.6 keVL173.2 keV1332.5 keVL460.7 keVOO0.0 keV Reference 2.14E-06 2.89E-06 3.02E-06 2.84E-06 2.42E-06 1.98E-06 1.52E-06 1.43E-06 1.11E-06 1.06E-06 1.01E-06 8.57E-07 Page 66 of 92

ATTACHMENT 5 TSD 14-022 Sensitivity to Density, Depth, and DRL Input and Output Revision 0 Sensitivity Input Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\ALL CORE SENSITIVITY 042415.iue Program Function: Sensitivity Analysis of input parameters Template Type: exponentcircular_plane Units: length - MM; density- glcm3 Convrgence (%]: 1 Abbreviation after detector's name: (f) - facing [normal]; (o) - opposite side; (I) - left side; (r) - right side detector orientation with respect to sample Collimator Name:! CRPN = 4 Detector's housing: no housing

1. Descriptic'alue'sTyp d.1 d.2 d.3 d.4 d.5 d.6 Material Density RelConc 1 Side Wall:Current 6.OOE+03 5 Source La) Current 58 27.6 concrete 2.35 Low 45 23.3 2.3 High 78 45 2.4 95% cl 95% cl 95% cl SOURCE-DETECTOR 8 456(f) Current 3.00E+03 0 0 0 0 Page 67 of 92

ATTACHMENT 5 TSD 14-022 Sensitivity to Density, Depth, and DRL Input and Output Revision 0 Sensitivity Input Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\ALL CORE SENSITIVITY 042415.iue Program Function: Sensitivity Analysis of input parameters Template Type: exponent circularplane Units: length - MM; density - g/cm3 Convrgence (%]: 1 Abbreviation after detector's name: (f) - facing [normal]; (o) - opposite side; (I) - left side; (r) - right side detector orientation with respect to sample Collimator Name:! CRPN = 4 Detector's housing: no housing Descriptic'alue's Typ d.1 d.2 d.3 d.4 d.5 d.6 Material Density RelConc 1 Side Wall:Current 6.OOE'-03 5 Source LalCurrent 58 27.6 concrete 2.35 1 Low 45 23.3 2.3 High 78 45 2.4 95% cl 95% cl 95% cl SOURCE-DETECTOR 8 456(f) Current 3.00E+03 0 0 0 0 Sensitivity Results Project was loaded from the following file: C:\GENIE2K\ISOCS\DATA\BATCH\ALL CORE SENSITIVITY 042415.iue Report was generated by IUE with program function: <SenstiMty>

Project calculation was started at: Fri Apr 24 12:04:07 2015 Original gis-file name: all core sensitivity 042415.gis Template Type: exponentcircular plane efficiency of all Models run [Efficiency]

Item Description Item Model 59.5 ke, 88.0 ke, 122.1 keW165.9 kel 238.6 kel 351.9 ke' 583.2 ke' 661.6 kel 1173.2 ke 1332.5 ke 1460.7 ke 2000.0 keV Reference 3.16E-06 4.29E-06 4.51E-06 4.38E-06 3.88E-06 3.33E-06 2.71E-06 2.58E-06 2.06E-06 1.96E-06 1.88E-06 1.59E-06 Source Layer 5Density Valuel 3.21E-06 4.35E-06 4.56E-06 4.42E-06 3.92E-06 3.36E-06 2.73E-06 2.59E-06 2.07E-06 1.97E-06 1.89E-06 1.60E-06 5Density Value2 3.12E-06 4.24E-06 4.46E-06 4.33E-06 3.85E-06 3.30E-06 2.69E-06 2.56E-06 2.05E-06 1.95E-06 1.87E-06 1.58E-06 Source Layer 5 Valuel 3.40E-06 4.54E-06 4.74E-06 4.58E-06 4.04E-06 3.45E-06 2.79E-06 2.65E-06 2.11E-06 2.OOE-06 1.92E-06 1.62E-06 Thickness 5 Value2 2.65E-06 3.74E-06 4.01E-06 3.94E-06 3.55E-06 3.06E-06 2.52E-06 2.41E-06 1.96E-06 1.87E-06 1.79E-06 1.53E-06 Source Layer 5 Valuel 3.39E-06 4.58E-06 4.78E-06 4.63E-06 4.08E-06 3.47E-06 2.81E-06 2.67E-06 2.13E-06 2.02E-06 1.93E-06 1.63E-06 DRL 5 Value2 2.91E-06 3.96E-06 4.19E-06 4.08E-06 3.64E-06 3.12E-06 2.56E-06 2.44E-06 1.97E-06 1.88E-06 1.80E-06 1.53E-06 Page 68 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Exponential Circular Plane - Aux Floor Cores Composite MDC Input Page 1 of A Geometry Composer Report CANBERRA Date: Wednesday, April 29, 2015 - 16:17:20

Description:

or Comment, 3 m source to detector, 5.8 cm thick, 2.75 DIL, 90 degree 50 mm collimator File Name: C:\GENIE2K~isoc\data\GEOMETRYXIn-Situ\EXPONENTCIRCULARPLANE\General ECP Model.geo Software: ISOCS Template: EXPONENTCIRCULARPLANE, Version: (default)

Detector:. 5456 Colmlator: 50mm-90d new (newISOCS 50mm side 90deg colimation [large hole collimator)

Environment: Temperature = 22 OC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

No. Descrption 4-1 d.2 d.3 44 4.5 46 Naterial Density Rel. Comc.

SSide Walls 0 600 none 2 Layer 1 0 none 3 Layer 2 0 none 4 Layer 3 0 none 5 Source Layer 5.8 0 2.75 oncre 2.3 1M00 6 Absrber1 7 Abmrber2 8 Smvee--De= 1 300 0 0 0 0 List of energies for effi-dency crve generation 59.5 88.0 122.1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 G A MM A S P E C T R U M A N A L Y S I S Filename: C:\GENIE2K\CAMFILES\10216-012 7-31-13.CNF Report Generated On  : 5/12/2015 1:52:44 PM Sample Title ECPAuxBLDGFLOOR Sample Description Sample Identification Sample Type concrete Sample Geometry Peak Locate Threshold  : 3.00 Peak Locate Range (in channels) 50 - 8192 Peak Area Range (in channels) 50 - 8192 Identification Energy Tolerance 1.000 keV Page 69 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Sample Size  : 1.OOOE+000 MA2 Sample Taken On Acquisition Started  : 7/31/2013 12:36:59 PM Live Time 900.0 seconds Real Time 902.5 seconds Dead Time 0.28 %

Energy Calibration Used Done On 5/13/2013 Efficiency Calibration Used Done On 5/4/2015 Efficiency ID TB strutur 0-7cm Page 70 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Peak Analysis Report 5/12/2015 1:52:44 PM Page 2 P E A K A N A L Y S I S R E P O R T Detector Name: 5452 Sample

Title:

ECP AuxBLDGFLOOR Peak Analysis Performed on: 5/12/2015 1:52:44 PM Peak Analysis From Channel: 50 Peak Analysis To Channel: 8192 Peak ROI ROI Peak Energy FWHM Net Peak Net Area Continuum No. start end centroid (keV) (keY) Area Uncert. Counts 1 336- 345 340.40 84.83 1.14 3 .61E+001 40.33 1. 64E+002 2 946- 961 954.82 238.59 1.15 8. 72E+001 32.59 5. 88E+001 3 2327- 2336 2331.97 583.12 0.53 1. 90E+001 16.02 2. OOE+001 4 2639- 2654 2644.80 661.36 0.86 4. 23E+001 17.98 1. 27E+001 S 5830- 5852 5841.95 1460.50 1.21 2 . 08E+002 31.75 1. 15E+001 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 2.000 sigma Page 71 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/12/2015 1:52:44 PM Page 3 N U C L I D E I D E N T I F I C A T I 0 N R E P 0 R T *****

Sample

Title:

ECP Aux BLDG FLOOR Nuclide Library Used: C:\GENIE2K\CAMFILES\ZionLiB.NLB IDENTIFIED NUCLIDES Nuclide Id Energy Yield Activity Activity Name Confidence (keY) (%) (pCi/MA2) Uncertainty K-40 0.985 1460.81* 10.67 1.10239E+006 1.91708E+005 CS-137 0.986 661.65* 85.12 2.03813E+004 9.00575E+003 Tl-208 0.999 583.19* 84.50 8.77286E+003 7.47330E+003 PB-212 1.000 74.81 9.60 77.11 17.50 87.20 6.30 89.80 1.75 115 .19 0.60 238.63* 44.60 5.25423E+004 2.13569E+004 300.09 3.41 TH-231 0.983 26.64 18.70 84.21* 8.00 1.12231E+005 1.27238E+005 89.95 1.25

• = Energy line found in the spectrum.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.000 keV Nuclide confidence index threshold = 0.30 Errors quoted at 2.000 sigma Page 72 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/12/2015 1:52:44 PM Page 4 I N T E R F E R E N C E C O R R E C T E D R EPORT *****

WWWWWW* ** ** W** **WW

• • • • • • • • • • WW** ** **** ****

• W*WW*W****

Nuclide Wt mean Wt mean Nuclide Id Activity Activity Name Confidence (pCi/M^2) Uncertainty K-40 0. 985 1.102386E+006 1.917084E+005 CS-137 0.986 2.038133E+004 9.005751E+003 TI-208 0.999 8.772863E+003 7.473303E+003 PB-212 1.000 5.254233E+004 2.135691E+004 TH-231 0.983 1.122309E+005 1.272381E+005

? = nuclide is part of an undetermined solution X = nuclide rejected by the interference analysis

@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 2.000 sigma UNIDENTIFIED PEAKS Peak Locate Performed on: 5/12/2015 1:52:44 PM Peak Locate From Channel: 50 Peak Locate To Channel: 8192 Peak Energy Peak Size in Peak CPS Peak Tol.

No. (keV) Counts per Second  % Uncertainty Type Nuclide All peaks were identified.

Page 73 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Nuclide MDA Report 5/12/2015 1:52:44 PM Page 5 N U C L I D E M D A R E P 0 R T Detector Name: 5452 Sample Geometry:

Sample

Title:

ECP Aux BLDG FLOOR Nuclide Library Used: C:\GENIE2K\CAMFILES\ZionLiB.NLB Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%) (pCi/M-2) (pCi/M'2) (pCi/M-2) (pCi/M-2)

+ K-40 1460.81* 10.67 1.311E+005 1. 31E+005 1. 102E+006 5.834E+004 MN-54 834.83 99.97 . 750E+003 8.75E+003 2 .488E+003 3.767E+003 CO-60 1173.22 100.00 4.774E+003 4. 77E+003 -6. 426E+002 1. 691E+003 1332.49 100.00 1.058E+004 6 . 195E+003 4.557E+003 NB-94 702.63 100.00 8 . 183E+003 7 . 61E+003 1. 527E+003 3.523E+003 871.10 100.00 7 .607E+003 2. 536E+001 3. 186E+003 SN-113 255.12 1.93 4.593E+005 1. 30E+004 9. 917E+004 2 . 103E+005 391.69 64.90 1.299E+004 -3. 900E+003 5.806E+003 CS-134 475.35 1.46 5 094E+005 8. 60E+003 - .155E+005 2.215E+005 563.23 8.38 8 944E+004 -3 .435E+004 3 . 851E+004 569.32 15.43 5 .482E+004 1. 020E+004 2. 402E+004 604.70 97.60 1.015E+004 4. 056E+002 4. 525E+003 795.84 85.40 8 .602E+003 -3. 871E+003 3 .603E+003 801.93 8.73 1.137E+005 2. 173E+004 4 .998E+004 1038.57 1.00 7 .345E+005 - .345E+005 3 .011E+005 1167.94 1.80 4 021E+005 - .806E+005 1.625E+005 1365.15 3.04 1.678E+005 1. 129E+004 5.944E+004

+ CS-137 661.65* 85.12 1.115E+004 1. l1E+004 2 .038E+004 4.923E+003

+ Tl-208 583. 19* 84.50 1.146E+004 1. 15E+004 8 .773E+003 5. 106E+003 BI-211 72.87 1.20 1.635E+006 1. 02E+005 -7. 411E+005 7.869E+005 351.10 12.20 1. 017E+005 4. 319E+004 4.737E+004 404.80 4.10 2. 124E+005 3. 108E+003 9. 513E+004 426.90 1.90 4.337E+005 -1.160E+004 1.924E+005 831.80 3.30 2.264E+005 -5.435E+004 9.484E+004 PB-211 404.80 3.00 2.903E+005 2 . 67E+005 4.247E+003 1.300E+005 427.10 1.40 6.011E+005 3.536E+004 2.674E+005 831.80 2.80 2.669E+005 -6.406E+004 1. 118E+005 BI-212 39.86 1.10 5.556E+006 7. 90E+004 -1.920E+006 2.697E+006 727.17 11.80 7.896E+004 2.095E+004 3.460E+004 785.42 2.00 3.820E+005 -2.741E+005 1. 613E+005 1620.56 2.75 2. 016E+005 -3.800E+004 7. 143E+004

+ PB-212 74.81 9.60 2.212E+005 2. 81E+004 2.366E+005 1.068E+005 77.11 17.50 9.776E+004 4.704E+003 4.685E+004 87.20 6.30 2.302E+005 3.638E+004I 1.098E+005 89.80 1.75 6.756E+005 -2.448E+005 3. 190E+005 115.19 0.60 1.868E+006 4.291E+005 8. 821E+005 238.63* 44.60 2.809E+004 5.254E+004 1.323E+004 Nuclide MDA Report 5/12/2015 1:52:44 PM Page 6 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Page 74 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 (pCi/M'2) (pCi/M^2)

Name (keV) 06) (pCi/M-2) (pCi/M-2)

+ PB-212 300.09 3.41 2. 581E+005 -4.956E+004 1. 174E+005 BI-214 609.31 46.30 3. 191E+004 3 .19E+004 3.410E+004 1. 480E+004 768.36 5.04 1. 681E+005 6.538E+004 7. 237E+004 806.17 1.23 7.465E+005 1.225E+005 3. 245E+005 934 .06 3.21 2. 318E+005 2.649E+004 9. 615E+004 1120.29 15.10 9. 128E+004 3. 19E+004 4.545E+004 4 .112E+004 1155.19 1.69 3. 962E+005 -9.672E+004 1. 572E+005 1238.11 5.94 1. 606E+005 -1.147E+004 6 .833E+004 1280.96 1.47 6. 326E+005 -3.632E+003 2. 672E+005 1377.67 4.11 2. 614E+005 1.745E+005 1. 126E+005 1385.31 0.78 9. 998E+005 -2.009E+005 4. 040E+005 1401.50 1.39 6. 346E+005 1.650E+005 2 .632E+005 1407.98 2.48 3. 373E+005 -6.419E+003 1. 383E+005 1509.19 2.19 3.448E+005 3.287E+004 1. 368E+005 1661.28 1.15 4. 885E+005 0.OOOE+000 1. 731E+005 1729.60 3.05 2 .859E+005 4. 561E+004 1. 155E+005 1764.49 15.80 8. 202E+004 3.502E+004 3. 566E+004 1847.44 2.12 3. 638E+005 1.211E+005 1. 409E+005 2118.54 1.21 0 OOOE+000 0.OOOE+000 0 OOOE+000 PB-214 74.81 6.33 3. 355E+005 3. 53E+004 3.588E+005 1. 620E+005 77.11 10 .70 1.599E+005 7.693E+003 7 .663E+004 87.20 3.70 3.920E+005 6. 194E+004 1.870E+005 89.80 1.03 1. 148E+006 -4.160E+005 5. 420E+005 241.98 7.49 1. 132E+005 -1.362E+004 5. 173E+004 295.21 19.20 5.383E+004 1.963E+004 2 .485E+004 351.92 37.20 3.534E+004 3.472E+004 1.652E+004 785.91 1. 10 7.233E+005 -1.740E+005 3. 077E+005 RA-226 186.21 3.28 3. 310E+005 3. 31E+005 1.296E+005 1.553E+005 AC-228 89.95 2 .10 5. 571E+005 4. 80E+004 -3.180E+005 2. 630E+005 93.35 3.50 3.850E+005 2. 172E+005 1. 833E+005 129.08 2.80 3.484E+005 3.200E+004 1. 631E+005 209.28 4.40 2.272E+005 5.353E+004 1.057E+005 270.23 3.60 2.633E+005 1. 142E+005 1.211E+005 327.64 3.20 2.968E+005 1.065E+005 1.354E+005 338.32 11.40 8.549E+004 2.692E+004 3.906E+004 409.51 2 .13 4.253E+005 -1.890E+004 1. 912E+005 463.00 4.40 2. 501E+005 6.442E+004 1. 141E+005 794.70 4.60 1.803E+005 -1.896E+004 7. 719E+004 911.60 27.70 4.799E+004 4.269E+004 2. 173E+004 964 .60 5.20 1.893E+005 3. 152E+004 8. 231E+004 969. 11 16.60 7. 310E+004 3.906E+004 3.267E+004 1587. 90 3.71 2.246E+005 9.555E+004 9.075E+004 PA-234M 766.36 0.29 3.063E+006 8 .65E+005 5.443E+005 1. 331E+006 1001.03 0 .84 8.648E+005 -2.530E+005 3.545E+005 TH-234 92.38 2.81 4.436E+005 4. 44E+005 -2.144E+005 2 . 102E+005 92 .80 2.77 4.733E+005 4.843E+004 2.250E+005 112.81 0.28 3.704E+006 -2.115E+006 1.740E+006 Nuclide MDA Report 5/12/2015 1:52:44 PM Page 7 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keY) (%) (pCi/M^2) (pCi/M^2) (pCi/M'2) (pCi/M^2) 92.80 2.77 4.733E+005 4.843E+004 2.250E+005 Page 75 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 112 .81 0.28 3. 704E+006 -2.115E+006 1.740E+006 U-235 89. 96 1.50 7. 800E+005 1. 94E+004 -4.452E+005 3. 681E+005 93.35 2.50 5. 391E+005 3. 041E+005 2.566E+005 105. 00 1.00 1. 133E+006 4.969E+005 5.349E+005 109. 14 1.50 7. 792E+005 4. 814E+005 3.688E+005 143.76 10.50 9. 973E+004 1.200E+004 4.687E+004 163 .35 4.70 1. 645E+005 -1.245E+005 7.540E+004 185 .71 54.00 1. 936E+004 1.224E+003 9.063E+003 202.12 1.00 8. 035E+005 -1.098E+005 3.675E+005 205.31 4.70 1. 962E+005 1.602E+004 9.077E+004 AM-241 59.54 36.30 5. 851E+004 5. 85E+004 -2.143E+004 2.802E+004

+ = Nuclide identified during the nuclide identification

• = Energy line found in the spectrum

• = Calculated MDA is zero due to zero counts in the region or the region is outside the spectrum

@ = Half-life too short to be able to perform the decay correction Page 76 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 1.27 cm Circular Plane - Minimum Detectable Concentrations Input Page I of A Geometry Composer Report CANBERRA Date: Monday, May 11, 2015 - 15:07:57

Description:

CP Tu*bine Building 1.27 cm Concrete Comment: 90 degree 50 mm cofimator, source to detector 3.0 m File Name: C:\GENIEKZqsocs~dataXGEOMETRY\In-Situ\CIRCULARPLANEXCP Turbine 1.27 cm 051115.geo Software: ISOCS Template: CIRCULAR-PLANE, Verion: (default)

Detector:. 5456 Collimator: 50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])

Environment: Temperature = 22 OC, Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (cm)

N.Descriptin d.1 d.2 d.3 d.4 d.5 &6 Material Densrty Ret. Cojc 1 Side Wals 0 600 none 2 LaWl 1.27 _ 2.3 1.00 3 Laye" 2 0 _<none>

4 Lam 3 0 <rrne>

S Laye4 0 _<none>

6 Layer* S 0 <none>

7 Layerfi 0 <none>

a LayU"7 0 <none>

9 Lawr 8 0 <none>

10 Law9 0o <none>

11 taper 10 0 1 <none>

12 Aesorl 13 Aa2rbw2 14 Suwze- 1 300 o1 0 o0 a List of energies for efficency curve generation 59.S 98.0 122-1 165.9 238.6 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 G A MM A S P E C T R U M A N A L Y S I S Filename: C:\GENIE2K\CAMFILES\10216-012 7-31-13.CNF Report Generated On 5/14/2015 10:10:29 AM Sample Title CP_1.27cm Sample Description Sample Identification Sample Type Concrete Sample Geometry Page 77 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Peak Locate Threshold 3.00 Peak Locate Range (in channels) 50 - 8192 Peak Area Range (in channels) 50 - 8192 Identification Energy Tolerance 1.000 keV Sample Size 1.000E+000 MA2 Sample Taken On Acquisition Started 7/31/2013 12:36:59 PM Live Time 900.0 seconds Real Time 902.5 seconds Dead Time 0.28 %

Energy Calibration Used Done On 5/13/2013 Efficiency Calibration Used Done On 5/11/2015 Efficiency ID Tb Struct 0-1cm Page 78 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Peak Analysis Report 5/14/2015 10:10:29 AM Page 2

PEAK ANALYSIS RE PORT Detector Name: 5452 Sample

Title:

CPTurbine 1.27cm Peak Analysis Performed on: 5/14/2015 10:10:29 AM Peak Analysis From Channel: 50 Peak Analysis To Channel: 8192 Peak ROI ROI Peak Energy FWHM Net Peak Net Area Continuum No. start end centroid (keY) (keV) Area Uncert. Counts 1 336- 345 340.40 84.83 1.14 3.61E+001 40.33 1.64E+002 2 946- 961 954.82 238.59 1.15 8.72E+001 32.59 5.88E+001 3 2327- 2336 2331.97 583.12 0.53 1. 90E+001 16.02 2.OOE+001 4 2639- 2654 2644.80 661.36 0.86 4. 23E+001 17.98 1.27E+001 5 5830- 5852 5841.95 1460.50 1.21 2.08E+002 31.75 1.15E+001 M First peak in a multiplet region m Other peak in a multiplet region F Fitted singlet Errors quoted at 2.000 sigma Page 79 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/14/2015 10:10:29 AM Page 3

N U C L I D E I D E N T I F I C A T IO N R E P 0 R T *****

Sample

Title:

CPTurbine 1.27cm Nuclide Library Used: C:\GENIE2K\CAMFILES\ZionLiB.NLB IDENTIFIED NUCLIDES Nuclide Id Energy Yield Activity Activity Name Confidence (keV) (%) (pCi/MA2 Uncertainty K-40 0.985 1460.81* 10.67 9.40449E+005 1.63547E+005 CS-137 0.986 661.65* 85.12 1.63351E+004 7.21787E+003 Tl-208 0.999 583.19* 84.50 6.95508E+003 5.92479E+003 PB-212 1.000 74.81 9.60 77.11 17.50 87.20 6.30 89.80 1.75 115. 19 0.60 238.63* 44.60 3.85605E+004 1.56737E+004 300.09 3.41 TH-231 0.983 26.64 18.70 84.21* 8.00 7.16495E+004 8.12302E+004 89.95 1.25

• = Energy line found in the spectrum.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.000 keV Nuclide confidence index threshold = 0.30 Errors quoted at 2.000 sigma Page 80 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/14/2015 10:10:29 AM Page 4

• • • • • I N T E R F E R E N C E C 0 R R E C T E D R EPORT *****

Nuclide Wt mean Wt mean Nuclide Id Activity Activity Name Confidence (pCi/MA2 Uncertainty K-40 0.985 9.404491E+005 1.635471E+005 CS-137 0.986 1.633509E+004 7.217867E+003 Tl-208 0.999 6.955079E+003 5.924795E+003 PB-212 1.000 3.856048E+004 1.567370E+004 TH-231 0.983 7.164948E+004 8.123024E+004

? = nuclide is part of an undetermined solution X = nuclide rejected by the interference analysis

@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 2.000 sigma UNIDENTIFIED P E A K S **********

Peak Locate Performed on: 5/14/2015 10:10:29 AM Peak Locate From Channel: 50 Peak Locate To Channel: 8192 Peak Energy Peak Size in Peak CPS Peak Tol.

No. (keV) Counts per Second  % Uncertainty Type Nuclide All peaks were identified.

Page 81 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Nuclide MDA Report 5/14/2015 10:10:29 AM Page 5

NUCLIDE M DA REPORT Detector Name: 5452 Sample Geometry:

Sample

Title:

CPTurbine_1.27cm Nuclide Library Used: C:\GENIE2K\CAMFILES\Zion LiB.NLB Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%) (pCi/M'2 (pCi/M-2 (pCi/M-2) (pCi/M^2)

+ K-40 1460.81* 10 .67 1. 118E+005 1. 12E+005 9.404E+005 4 .977E+004 MN-54 834.83 99. 97 7. 153E+003 7. 15E+003 2.033E+003 3 .080E+003 CO-60 1173.22 100.00 4.009E+003 4. 01E+003 -5.396E+002 1. 420E+003 1332.49 100.00 8.970E+003 5.251E+003 3. 862E+003 NB-94 702.63 100.00 6.592E+003 6.24E+003 1.230E+003 2. 838E+003 871.10 100.00 6.240E+003 2 080E+001 2 . 613E+003 SN-113 255.12 1. 93 3.391E+005 9. 95E+003 7. 321E+004 1. 553E+005 391.69 64 .90 9.948E+003 -2 .987E+003 4 .446E+003 CS-134 475.35 1.46 3.967E+005 7. OOE+003 -8. 996E+004 1. 725E+005 563.23 8.38 7.070E+004 -2. 715E+004 3. 044E+004 569.32 15.43 4.337E+004 8. 071E+003 1. 900E+004 604.70 97 .60 8.071E+003 3. 226E+002 3 .599E+003 795.84 85.40 7.003E+003 -3. 152E+003 2. 933E+003 801.93 8.73 9. 261E+004 1. 771E+004 4. 072E+004 1038.57 1.00 6. 110E+005 -1.119E+005 2. 504E+005 1167.94 1.80 3.375E+005 -1.516E+005 1.364E+005 1365.15 3 .04 1.424E+005 9.587E+003 5.047E+004

+ CS-137 661.65* 85 .12 8.936E+003 8. 94E+003 1.634E+004 3.946E+003

+ Tl-208 583. 19* 84 .50 9.087E+003 9. 09E+003 6.955E+003 4.048E+003 BI-211 72.87 1.20 1.002E+006 7. 72E+004 -4. 541E+005 4.822E+005 351.10 12 .20 7 . 718E+004 3. 276E+004 3.594E+004 404.80 4 .10 1. 631E+005 2. 387E+003 7.306E+004 426.90 1.90 3.346E+005 -8. 953E+003 1.485E+005 831.80 3.30 1.850E+005 -4. 442E+004 7.750E+004 PB-211 404.80 3.00 2.229E+005 2. 18E+005 3 .262E+003 9.985E+004 427.10 1.40 4.638E+005 2. 728E+004 2.063E+005 831.80 2.80 2. 181E+005 -5.235E+004 9. 134E+004 BI-212 39.86 1. 10 2.530E+006 6. 38E+004 -8.743E+005 1.228E+006 727.17 11.80 6.380E+004 1.693E+004 2.796E+004 785.42 2.00 3 . 107E+005 -2.229E+005 1.312E+005 1620.56 2.75 1.732E+005 -3.265E+004 6.138E+004

+ PB-212 74.81 9.60 1.366E+005 2. 06E+004 1.461E+005 6.598E+004 77.11 17.50 6.089E+004 2.930E+003 2.918E+004 87.20 6.30 1.479E+005 2.337E+004 7.059E+004 89.80 1.75 4.370E+005 -1.584E+005 2.064E+005 Page 82 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 115.19 0.60 1.265E+006 2.907E+005 5.975E+005 Nuclide MDA Report 5/14/2015 10:10:29 AM Page 6 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keY) (%P)

(pCi/M'2 ) (pCi/M^2 ) (pCi/M^2 (pCi/M-2)

PB-212 238.63* 44.60 2.062E+004 3.856E+004 9. 711E+003 300.09 3.41 1.932E+005 -3.710E+004 8.785E+004 BI-214 609.31 46.30 2.540E+004 2. 54E+004 2. 714E+004 1. 178E+004 768.36 5.04 1.365E+005 5.307E+004 5.875E+004 806.17 1.23 6.085E+005 9. 981E+004 2.645E+005 934.06 3.21 1. 913E+005 2 . 185E+004 7.932E+004 BI-214 1120.29 15.10 7.637E+004 2.54E+004 3.803E+004 3.441E+004 1155.19 1.69 3.323E+005 -8.112E+004 1.319E+005 1238.11 5.94 1.354E+005 -9.671E+003 5.760E+004 1280.96 1.47 5.346E+005 -3.069E+003 2.258E+005 1377.67 4.11 2. 221E+005 1.482E+005 9.563E+004 1385.31 0.78 8.497E+005 -1.707E+005 3. 433E+005 1401.50 1.39 5.398E+005 1.403E+005 2. 239E+005 1407.98 2.48 2.870E+005 -5.462E+003 1. 177E+005 1509.19 2.19 2.948E+005 2 . 811E+004 1. 170E+005 1661.28 1.15 4.205E+005 0.OOOE+000 1 .490E+005 1729.60 3.05 2.468E+005 3.937E+004 9. 971E+004 1764.49 15.80 7 .089E+004 3.027E+004 3. 082E+004 1847.44 2.12 3 . 154E+005 1.050E+005 1. 222E+005 2118.54 1.21 0 OOOE+000 0.OOOE+000 0 .OOOE+000 PB-214 74.81 6.33 2. 072E+005 2. 68E+004 2 .215E+005 1. 001E+005 77.11 10.70 9. 958E+004 4.792E+003 4 .773E+004 87.20 3.70 2. 519E+005 3.980E+004 1. 202E+005 89.80 1.03 7.425E+005 -2.691E+005 3 .506E+005 241.98 7.49 8. 319E+004 -1.001E+004 3. 801E+004 295.21 19.20 4. 024E+004 1.467E+004 1. 858E+004 351.92 37.20 2 .682E+004 2.634E+004 1. 254E+004 785.91 1.10 5. 883E+005 -1.415E+005 2 .503E+005 RA-226 186.21 3.28 2. 375E+005 2. 38E+005 9.300E+004 1. 115E+005 AC-228 89.95 2.10 3. 605E+005 3. 95E+004 -2.058E+005 1. 702E+005 93.35 3.50 2. 512E+005 1.417E+005 1. 195E+005 129.08 2.80 2. 399E+005 2.204E+004 1. 123E+005 209.28 4.40 1.648E+005 3.883E+004 7 .668E+004 270.23 3.60 1.954E+005 8.472E+004 8. 981E+004 327.64 3.20 2.238E+005 8.032E+004 1. 021E+005 338.32 11.40 6.465E+004 2.035E+004 2. 954E+004 409.51 2. 13 3.269E+005 -1.453E+004 1.470E+005 463.00 4 .40 1.943E+005 5.006E+004 8. 869E+004 794.70 4.60 1.468E+005 -1.543E+004 6. 283E+004 911.60 27.70 3. 951E+004 3. 515E+004 1.789E+004 964.60 5.20 1.566E+005 2.607E+004 6.807E+004 969.11 16 .60 6.048E+004 3.232E+004 2.703E+004 1587.90 3.71 1.927E+005 8. 199E+004 7.787E+004 PA-234M 766.36 0.29 2.486E+006 7. 17E+005 4.417E+005 1. 081E+006 1001.03 0.84 7.173E+005 -2.098E+005 2.940E+005 Nuclide MDA Report 5/14/2015 10:10:29 AM Page 7 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%-) (pCi/M-2 ) (pCi/MA2) (pCi/MA2 (pCi/M-2)

Page 83 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 TH-234 92.38 2.81 2.887E+005 2.89E+005 -1.396E+005 1.368E+005 92.80 2.77 3.083E+005 3.155E+004 1.465E+005 112.81 0.28 2.501E+006 -1.428E+006 1. 175E+006 U-235 89.96 1.50 5.047E+005 1.39E+004 -2.881E+005 2.382E+005 93.35 2.50 3.516E+005 1.983E+005 1.674E+005 105.00 1.00 7.556E+005 3.315E+005 3.568E+005 109.14 1.50 5.233E+005 3.233E+005 2.477E+005 143.76 10.50 6.962E+004 8.375E+003 3.272E+004 163.35 4.70 1.165E+005 -8.817E+004 5.339E+004 185.71 54 .00 1.389E+004 8.782E+002 6 . 501E+003 202.12 1.00 5.810E+005 -7.938E+004 2.657E+005 205.31 4.70 1.421E+005 1.160E+004 6.573E+004 AM-241 59.54 36.30 3.337E+004 3.34E+004 -1.222E+004 1.598E+004

+ = Nuclide identified during the nuclide identification

• = Energy line found in the spectrum

• = Calculated MDA is zero due to zero counts in the region or the region is outside the spectrum

@ = Half-life too short to be able to perform the decay correction Page 84 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Containment Liner 0.153 cm Circular Plane - Minimum Detectable Concentrations Page 1 of Geometry Composer Report A

CANBERRA Date: Monday, May 11, 2015 - 14:43:52

Description:

CP Containment 0.152 cm Steel Comment: 90 degree 50 mm colmator 3.0 m Source to Detector File Name: C:\GENIE1isocs\data\GEOMETRYr n-SiuCIRCULARPLANECP Containmnet 0.153 Steel 051115.geo Software: ISOCS Template: CIRCULARPLANE, Version: (default)

Detector. 5456 Collimator: 50mm-90d new (newlSOCS 50mm side 90deg col]imation [large hole collimator])

Environment: Temperature = 22 OC,Pressure = 760 mm Hg, Relative Humidity = 30%

Integration: Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)

Dimensions (an)

No. d.1 d.2 d.3 d.4 d.AS d.6 Hateri Dwuiy ReL Coew.

1 SwdeWAS 0 600 none 2 Layer I 0.153 __mWO 7.9 1.00 3 Layw 2 0.182 Wcted 7.9 4 Layer 3 0 43o<ne>

S taye4 0 <Tone>

6 LayeS 0 <runoe>

7 La.w6 0 ruine>

8 Layr 7 0 <rorte>

9 Laye 0 _ <rwne>

t0 Layw9 0 ,<mane>

11 LWayr 10 0 c<rlue>

12 Ablsxwter 13 Aimrber2 14 Som, ce.Oetm'r 300 0 0 0 0 List of energies for efficiency veageneraono 59.5 88.0 122.1 165.9 2386 351.9 583.2 661.6 1173.2 1332.5 1460.7 2000.0 GAMMA SPECTRUM ANALYSIS Filename: C:\GENIE2K\CAMFILES\10216-012 7-31-13.CNF Report Generated On 5/14/2015 10:14:45 AM Sample Title CPContainment 0.153_Steel Sample Description Sample Identification Sample Type Steel Sample Geometry Peak Locate Threshold 3.00 Peak Locate Range (in channels) 50 - 8192 Peak Area Range (in channels) 50 - 8192 Identification Energy Tolerance 1.000 keV Page 85 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Sample Size  : 1.OOOE+000 MA2 Sample Taken On Acquisition Started  : 7/31/2013 12:36:59 PM Live Time 900.0 seconds Real Time 902.5 seconds Dead Time 0.28 %

Energy Calibration Used Done On 5/13/2013 Efficiency Calibration Used Done On 5/11/2015 Efficiency ID U1CT .153_051115 Page 86 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Peak Analysis Report 5/14/2015 10:14:45 AM Page 2

PEAK ANALYSIS RE PORT Detector Name: 5452 Sample

Title:

CPContainment_0.153_Steel Peak Analysis Performed on: 5/14/2015 10:14:44 AM Peak Analysis From Channel: 50 Peak Analysis To Channel: 8192 Peak ROI ROI Peak Energy FWHM Net Peak Net Area Continuum No. start end centroid (keY) (keV) Area Uncert. Counts 1 336- 345 340.40 84.83 1.14 3. 61E+001 40.33 1.64E+002 2 946- 961 954.82 238.59 1.15 8. 72E+001 32.59 5.88E+001 3 2327- 2336 2331.97 583.12 0.53 1. 90E+001 16.02 2.OOE+001 4 2639- 2654 2644.80 661.36 0.86 4. 23E+001 17.98 1.27E+001 5 5830- 5852 5841.95 1460.50 1.21 2. 08E+002 31.75 1.15E+001 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 2.000 sigma Page 87 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/14/2015 10:14:45 AM Page 3

N U C L I D E I D E N T I F I C A T I 0 N R EPORT *****

Sample

Title:

CPContainment_0.153_Steel Nuclide Library Used: C:\GENIE2K\CAMFILES\ZionLiB.NLB IDENTIFIED NUCLIDES Nuclide Id Energy Yield Activity Activity Name Confidence (keY) (%) (pCi/MA2 Uncertainty K-40 0.985 1460.81* 10.67 8.88975E+005 1.54596E+005 CS-137 0.986 661.65* 85.12 1.50062E+004 6.63070E+003 Tl-208 0.999 583.19* 84.50 6.36608E+003 5.42305E+003 PB-212 1.000 74.81 9.60 77.11 17.50 87.20 6.30 89.80 1.75 115 .19 0.60 238.63* 44.60 3.43311E+004 1.39546E+004 300.09 3.41 TH-231 0.983 26.64 18.70 84.21* 8.00 7.04728E+004 7.98962E+004 89.95 1.25

• = Energy line found in the spectrum.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.000 keV Nuclide confidence index threshold = 0.30 Errors quoted at 2.000 sigma Page 88 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Interference Corrected Activity Report 5/14/2015 10:14:45 AM Page 4

I N T E R F E R E N C E C O R R E C T E D R EPORT *****

Nuclide Wt mean Wt mean Nuclide Id Activity Activity Name Confidence (pCi/MA2 Uncertainty K-40 0.985 8.889747E+005 1.545956E+005 CS-137 0.986 1.500624E+004 6.630698E+003 Tl-208 0.999 6.366084E+003 5.423050E+003 PB-212 1.000 3.433112E+004 1.395459E+004 TH-231 0.983 7.047283E+004 7.989624E+004

? = nuclide is part of an undetermined solution X = nuclide rejected by the interference analysis

@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 2.000 sigma

• W* W*W UNIDENTIFIED PEAKS Peak Locate Performed on: 5/14/2015 10:14:44 AM Peak Locate From Channel: 50 Peak Locate To Channel: 8192 Peak Energy Peak Size in Peak CPS Peak Tol.

No. (keV) Counts per Second  % Uncertainty Type Nuclide All peaks were identified.

Page 89 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Nuclide MDA Report 5/14/2015 10:14:45 AM Page 5

NU CLI D E M DA REPORT Detector Name: 5452 Sample Geometry:

Sample

Title:

CP Containment_0.153_Steel Nuclide Library Used: C:\GENIE2K\CAMFILES\ZionLiB.NLB Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%-) (pCi/M-2 (pCi/M^2) (pCi/M-2) (pCi/M-2)

+ K-40 1460.81* 10. 67 1.057E+005 1. 06E+005 8.890E+005 4.705E+004 MN-54 834.83 99.97 6. 618E+003 6. 62E+003 1. 881E+003 2.849E+003 CO-60 1173.22 100.00 3.757E+003 3.76E+003 -5.057E+002 1. 331E+003 1332.49 100.00 8.450E+003 4.946E+003 3.638E+003 NB-94 702.63 100.00 6.066E+003 5. 78E+003 1. 132E+003 2. 612E+003 871.10 100.00 5.782E+003 1. 928E+001 2.422E+003 SN-113 255.12 1. 93 3.025E+005 9. OOE+003 6. 531E+004 1.385E+005 391.69 64 .90 9.002E+003 -2. 703E+003 4.023E+003 CS-134 475.35 1.46 3. 611E+005 6. 47E+003 -8. 188E+004 1.570E+005 563 .23 8.38 6.465E+004 -2. 482E+004 2.783E+004 569.32 15.43 3. 967E+004 7. 383E+003 1.738E+004 604.70 97.60 7. 395E+003 2. 956E+002 3.298E+003 795.84 85.40 6.470E+003 -2. 912E+003 2 . 710E+003 801. 93 8.73 8. 558E+004 1. 636E+004 3.763E+004 1038.57 1.00 5. 698E+005 -1. 044E+005 2.336E+005 1167.94 1.80 3. 162E+005 -1. 420E+005 1.278E+005 1365.15 3.04 1. 343E+005 9. 039E+003 4. 758E+004

+ CS-137 661.65* 85.12 8. 209E+003 8. 21E+003 1. 501E+004 3 .625E+003

+ Tl-208 583.19* 84.50 8. 317E+003 8 .32E+003 6 .366E+003 3. 705E+003 BI-211 72.87 1.20 1. 057E+006 6. 96E+004 -4 .788E+005 5. 084E+005 351.10 12.20 6. 960E+004 2. 955E+004 3. 240E+004 404.80 4.10 1. 477E+005 2. 162E+003 6. 618E+004 426.90 1.90 3 .036E+005 -8. 123E+003 1.347E+005 831.80 3.30 1. 712E+005 -4. 109E+004 7. 170E+004 PB-211 404.80 3.00 2. 019E+005 2. 02E+005 2. 95.5E+003 9.044E+004 427.10 1.40 4 .208E+005 2. 476E+004 1.872E+005 831.80 2.80 2 018E+005 -4. 843E+004 8.450E+004 BI-212 39.86 1.10 5. 045E+006 5. 88E+004 -1. 743E+006 2.449E+006 727.17 11.80 5. 878E+004 1. 560E+004 2.575E+004 785.42 2.00 2 .869E+005 -2. 058E+005 1.211E+005 1620.56 2.75 1.643E+005 -3.097E+004 5.822E+004 Nuclide MDA Report 5/14/2015 10:14:45 AM Page 6 Page 90 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%) (pCi/M'2 ) (pCi/M'2 ) (pCi/M-2) (pCi/M-2)

+ PB-212 74.81 9.60 1.421E+005 1.84E+004 1.519E+005 6. 861E+004 77.11 17.50 6.237E+004 3.001E+003 2.989E+004 87.20 6.30 1.441E+005 2.276E+004 6.873E+004 89.80 1.75 4.213E+005 -1.527E+005 1.990E+005 115.19 0.60 1.152E+006 2.646E+005 5.440E+005 238.63* 44 .60 1.836E+004 3.433E+004 8.646E+003 300.09 3.41 1.733E+005 -3.327E+004 7.880E+004 BI-214 609.31 46.30 2.328E+004 2.33E+004 2.487E+004 1.079E+004 768.36 5 .04 1.259E+005 4.897E+004 5.421E+004 806.17 1.23 5.623E+005 9.225E+004 2.445E+005 934 .06 3.21 1.777E+005 2.030E+004 7.368E+004 1120.29 15. 10 7.144E+004 2.33E+004 3.558E+004 3.218E+004 1155 .19 1.69 3.112E+005 -7.597E+004 1.235E+005 1238 .11 5.94 1.272E+005 -9.082E+003 5.409E+004 1280.96 1.47 5.028E+005 -2.887E+003 2. 124E+005 1377 .67 4 .11 2.095E+005 1.398E+005 9.020E+004 1385.31 0.78 8.016E+005 -1.611E+005 3.239E+005 1401.50 1.39 5.095E+005 1.325E+005 2. 113E+005 1407 .98 2.48 2.710E+005 -5.156E+003 1. 1l1E+005 1509.19 2.19 2.790E+005 2.660E+004 1.107E+005 1661.28 1. 15 3.991E+005 0.OOOE+000 1.414E+005 1729.60 3.05 2.345E+005 3.741E+004 9.475E+004 1764.49 15.80 6.740E+004 2.878E+004 2.930E+004 1847.44 2 .12 3.001E+005 9.994E+004 1. 162E+005

> 2118.54 1.21 0.OOOE+000 0.OOOE+000 0.OOOE+000 PB-214 74.81 6.33 2.154E+005 2.42E+004 2.304E+005 1.040E+005 77.11 10 .70 1.020E+005 4.909E+003 4.889E+004 87.20 3.70 2.453E+005 3.875E+004 1. 170E+005 89.80 1.03 7.158E+005 -2.594E+005 3.380E+005 241.98 7.49 7.410E+004 -8.915E+003 3.386E+004 295.21 19.20 3.607E+004 1.315E+004 1.665E+004 351. 92 37.20 2.418E+004 2.375E+004 1. 131E+004 785. 91 1.10 5.433E+005 -1.307E+005 2.311E+005 RA-226 186.21 3.28 2.105E+005 2.10E+005 8.241E+004 9.877E+004 89.95 2.10 3.474E+005 3.67E+004 -1.983E+005 1.640E+005 93.35 3.50 2.393E+005 1.350E+005 1. 139E+005 129.08 2.80 2.154E+005 1.979E+004 1.008E+005 209.28 4.40 1.462E+005 3.446E+004 6.805E+004 270.23 3.60 1.746E+005 7.572E+004 8.027E+004 327.64 3.20 2.014E+005 7.227E+004 9. 189E+004 Nuclide MDA Report 5/14/2015 10:14:45 AM Page 7 Nuclide MDA Report 5/14/2015 10:14:45 AM Page 7 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%) (pCi/M^2 ) (pCi/M'2 ) (pCi/M^2 (pCi/M^2)

AC-228 338.32 11.40 5. 822E+004 1.833E+004 2.660E+004 409.51 2.13 2. 963E+005 -1. 316E+004 1.332E+005 463.00 4.40 1. 767E+005 4. 552E+004 8.066E+004 794.70 4.60 1. 356E+005 -1. 426E+004 5.805E+004 911.60 27.70 3. 667E+004 3 .262E+004 1.660E+004 964.60 5.20 1. 456E+005 2. 424E+004 6. 331E+004 969.11 16.60 5 .626E+004 3. 006E+004 2. 515E+004 Page 91 of 92

ATTACHMENT 6 TSD 14-022 Minimum Detectable Concentrations Revision 0 1587.90 3.71 1.827E+005 7.772E+004 7 .382E+004 PA-234M 766.36 0.29 2.293E+006 6.68E+005 4.076E+005 9.970E+005 1001.03 0.84 6. 681E+005 -1.954E+005 2. 738E+005 TH-234 92.38 2.81 2.759E+005 2.76E+005 -1.334E+005 1. 307E+005 92.80 2.77 2.942E+005 3.011E+004 1.398E+005 112.81 0.28 2.284E+006 -1.304E+006 1.073E+006 U-235 89.96 1.50 4.863E+005 1.23E+004 -2.776E+005 2 .295E+005 93.35 2.50 3.350E+005 1.889E+005 1. 594E+005 105.00 1.00 6.992E+005 3.068E+005 3 .302E+005 109.14 1.50 4.806E+005 2.970E+005 2. 275E+005 143.76 10.50 6.202E+004 7.460E+003 2. 915E+004 163.35 4.70 1.033E+005 -7.818E+004 4. 735E+004 185.71 54.00 1.231E+004 7.781E+002 5. 760E+003 202.12 1.00 5. 153E+005 -7.040E+004 2. 357E+005 205.31 4.70 1.260E+005 1.029E+004 5. 831E+004 Nuclide Energy Yield Line MDA Nuclide MDA Activity Dec. Level Name (keV) (%) (pCi/M^2 ) (pCi/M'2 ) (pCi/M^2 (pCi/M^2)

AM-241 59.54 36.30 4.040E+004 4.04E+004 -1.480E+004 1.935E+004

+ = Nuclide identified during the nuclide identification

• = Energy line found in the spectrum

• = Calculated MDA is zero due to zero counts in the region or the region is outside the spectrum

@ = Half-life too short to be able to perform the decay correction Page 92 of 92