Text

Response to Request 2 SU10214
	ML21102A392
Person / Time
Site:	Zion File:ZionSolutions icon.png
Issue date:	04/10/2019
From:	; ZionSolutions
To:	; Office of Nuclear Material Safety and Safeguards
Shared Package
ML21103A229	List: ML21102A383; ML21102A385; ML21102A386; ML21102A387; ML21102A388; ML21102A389; ML21102A390; ML21102A391; ML21102A392; ML21102A393; ML21102A394; ML21102A395; ZS-2020-0011, ZS-2020-0011 Attachment, Zion Station Restoration Project Supporting Information for the Phased Release of Land from the 10 CFR Part 50 License, Revision 3; ZS-2021-0010, Cutting Tools 1, Volume Reduction Station (Yrs), Zion Rvis Project, Technical Specification (C077-1000), Rev. 0;
References
	ES-ZION-CR-2019-0030, SU10214, ZS-2021-0010
	Download: ML21102A392 (33)
	v • d • e

NRC Request 1: Provide additional information and photographs concerning the DRPs and their source in survey units 10214E and 10214F.

ZionSolutions Response: Two condition reports (CRs), ES-ZION-CR-2019-0030 and ES-ZION-CR-2019-0166, documenting the identification of discrete radioactive particles (DRPs) in Class 2 survey units 10214D (subsequently Class 1 survey unit 10214E) and 10214C (subsequently Class 1 survey unit 10214F), have been provided to the NRC.

Additionally, the Classification Worksheet and Classification Summary forms that document the creation of Class 1 survey units 10214E and 10214F have been provided.

In March and November of 2019, the DRPs were discovered while performing radiological assessments in the site parking lot (10214). The response to NRC Question

7 on Attachment 1 of ZS-2021-0001 attributes the source of the particles to the events in 2014 and 2015 (documented in CR-2014-001074 and CR-2015-000324). The DRPs were spread throughout the site by water and heavy equipment. ZionSolutions contends that particles from these events migrated to the drainage ditch in survey unit 10212D by means of water and, in turn, after the flooding of the drainage ditch in late 2018, spread to areas of survey units 10212, 10213, and 10214. In this case, two particles from the flooding event settled in survey unit 10214. The timeline of every significant event in survey units 10212, 10213, and 10214 was provided in Drainage Ditch Flood Timeline on the enclosure to ZS-2021-0001.

The NRC reviewers requested that, if possible, a map be provided that traced the routes of vehicles moving to and from the Radiologically Restricted Area (RRA). ZionSolutions cannot provide the requested map, as vehicles were not tracked outside of the RRA.

However, all vehicles exiting the RRA were required to successfully go through the truck monitor, and the probability of particles leaving the RRA in any method other than described above is very low.

DETAILS Division:

LT;#79;#RP Name:

Discrete Radioactive Particle Outside of Radiologically Restricted Area (RRA)

==

Description:==

Pre-excavation surveys (radiological) outside of the RRA discovered a Discrete Radioactive Particle (DRP) east of the north access road to the site.

Start Date:

3/7/2019 7:39:00 AM End Date:

4/10/2019 12:00:00 AM Status:

Completed PROPERTIES SIG Level:

3 Date/Time Initiated:

3/7/2019 7:39:00 AM Brief

Description:

Discrete Radioactive Particle Outside of Radiologically Restricted Area (RRA)

==

Description:==

Pre-excavation surveys (radiological) outside of the RRA discovered a Discrete Radioactive Particle (DRP) east of the north access road to the site.

Immediate Actions:

Supervision was notified, the DRP was captured, field assessed and forwarded for isotopic analysis. The site grounds immediately surrounding and extending out away from the discovery location were assessed for contamination with no results greater than MDC or MDCR.

Recommended Actions:

Management review for additional follow-up activities, notifications and CR closeout.

Date Discovered:

3/6/2019 Issue Identified By:

SUMMARY

ZS-LT-300-001-002 Revision 6 Information Use Survey Area No.: 10200 Survey Unit No.:

10214E Survey Unit Name: Construction Parking Area Type of Classification Initial IZl Verification D Change D Final 0 Comments:

Basis for Current Classification Class 1 ~

Class 2 D Class 3 D

1) Function of Area during Facility Operation - The 10214 survey unit serves as the primary parking lot for the site, and vehicles (including radioactive material transport vehicles) entering and leaving through the North Gate traverse this area via a road along the east boundary. Public access to Hosa Park is via paths in the north/northwest portions of the area, large enough for vehicles. While performing pre-excavation surveys in SU 10214D a particle was identified and a new survey unit was carved out and added within Survey Unit 10214, creating a total of five (5) survey units labeled 10214 A,B,C,D and now 10214E.

2) Documented Process Events, Spills and/or Radiological Incidents (HSA) - September 2006 classified the Construction Parking Area as non-impacted. However, because the area serves as the primary parking lot for decommissioning, and because of the high number of radioactive material shipments ( enclosed) that traverse this area, this survey unit was reclassified as Class 3 early on in the decommissioning in 2012.. On 6/12/2017 the Survey Unit 10214 was re-classified again to a Class 2 due to ongoing construction activities in the L TP.

3) Past Operational Survey Results - All operational RP Radiological Surveys reported less than the 1 0CFR20 release limits for the site.

Visual Inspection & Walk-down Performed D Date:

Time:

Not Performed IZl

1) Observations and/or Findings - NI A Current Radiological Survey Data Characterization D RASS/RA IZl Turnover D

1) Summary - While performing pre excavation surveys under Sample Plan RA10200-E-04 survey scans identified a 1.26E+06 pCi Co-60 particle. No other particles or anomalies were identified during the RA survey.

Comments: Based on analytical results and where the particle found a new survey unit was added creating the fifth survey unit to SU10214. SU10214E will be a Class 1 MARSSIM Survey Unit while, the remaining survey units 10214 A, B. C and D will remain a MARS SIM Class 2.

SURVEY UNITS FOR CLASSIFICATION

SUMMARY

Classification Class 1 IZ!

Class 2 D Class 3 D ZS-LT-300-001-002 Revision 6 Information Use Non-Impacted D Review & Approval

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Submitted: '],J"'/ Gi:ro ti) *.,,,~ 3b frlleviewetl: t:J..,J,e,,/{l ~

-z~ 19

~nt/Sign Nam ate) 1 I

{

rint/Sign Name!D

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If the classification of the survey unit has changed from the initial classification Approved: ~-'N:>~

~-

Date:.& / 1 { to 1 'i SURVEY UNITS CLASSIFICATION WORKSHEET ZS-LT-300-001-002 Revision 6 Information Use Survey Area No.: _1_0_2_00 __________ Survey Unit No.: _1_0_2_14_E _________ _

SECTION 1 - Class 1 (checked box indicates affirmative)

Area previously subjected to remedial actions (see MARS SIM section 5.4).------------------------------ D Leaks and/or spills of radioactive material are known to have occurred.------------------------------------- D Former burial or disposal site for radioactive waste.---------------------------------------------------------------------* D Radioactive waste storage site.*------------------------------------------------------------------------------------------------------- D The presence of discrete solid radioactive material with high specific activity. ------------------------

rgj Considering the potential for all impacted areas to exceed the DCGL, does the Yes No existing data provide a high degree of confidence that no individual measurement lv7 will exceed the applicable DCGL in this survey unit?-----------------------------------------------------

L.:.J I IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 1 AREA.

M IF YES, CONTINUE WITH THE CLASSIFICATION PROCESS BELOW.

p SECTION 2 - Class 2 Radioactive materials present in unsealed form.---------------------------------------------------------------------------- D Potentially contaminated transport route. *------------------------------------------------------------------------------------- D Area downwind and/or downstream from an eflluent release point. ------------------------------------------ D Upper walls or ceiling of building subjected to airborne radioactivity. -------------------------------------* D Area where low concentrations of radioactive materials were handled. ------------------------------------- D Perimeter of former contamination control area. --------------------------------------------------------------------------

Yes No A

C T

E D

Does the existing data provide a high degree of confidence that no individual measurement will exceed 5% of the applicable DCGL?*-------------------------------------------------

A IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 2 AREA.

R IF YES, CONTINUE WITH THE CLASSIFICATION PROCESS BELOW.

E SECTION 3 - Class 3 Buffer zone around a Class 1 or Class 2 area. ------------------------------------------------------------------------------ D Potential for low levels ofresidual radioactivity. ------------------------------------------------------------------------- D Yes No Is there no reasonable potential for contamination in this area?*------------------------------------- D IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 3 AREA.

IF YES, CONTINUE WITH THE CLASSIFICATION PROCESS BELOW.

SECTION 4 Sufficient process knowledge and/or historical data to warrant a non-impacted designation?

Yes No IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 3 ARE IF YES, THE SURVEY UNIT IS NON-IMP ACTED.

1 A

2000.04 sq. m

su10214E

C\\ass 1 s945J5 sq. rn su10214D C\\ass2

3/5/2019 2:32:02PM Page I of6

~~~pex-Gamma Analysis Report for 05-Mar-19-10008 L2-10214D-IJGS-00 1 SS GAMMA SPECTRUM ANALYSIS Sample Identification Sample Description Sample Type Unit Sample Point Sample Size Facility Sample Taken On Acquisition Started Procedure Operator Detector Name Geometry Live Time Real Time Dead Time Peak Locate Threshold Peak Locate Range (in channels)

Peak Area Range (in channels)

Identification Energy Tolerance Energy Calibration Used Done On Efficiency Calibration Used Done On Efficiency Calibration Description Sample Number Certificate Name Certificate Date

05-Mar-19-10008

L2-10214D-IJGS-001SS

Soil 1.419E+02 grams

Default

3/5/2019 1 :30:00PM

3/5/2019 2:19:04PM

1L_Bottle_Water

Administrator

324

1 L Bottle Water

600.0 seconds

618.8 seconds

3.04%

3.00

120 - 4096

1.000 keV

9/29/2018

3/5/2019

64439

Eu155-Na22

1/30/2013 12:00:00PM

"tliis count CAN NOT be Tlte accuracy OJ

h. al and calibration d b se tlte P ysic I

assure ecau.

t did not match. T us

of the coun 1

geometries lVE identification on Y*

is a QUALITAT I/,,Ll/ _

A11alyst---Tz~a-:...J1!~1:1----

D t

~.... r---c f ae PEAK ANALYSIS REPORT Peak Analysis Performed on

3/5/2019 2:31:48PM Peak Analysis From Channel Peak Analysis To Channel

120

4096

3/5/2019 2:32:02PM Page 2 of6 Analysis Report for 05-Mar-19-10008 L2-10214D-IJGS-001SS Peak Energy ROI No.

(keV) start 1

1173.09 2338 -

2 1332. 35 2657 -

M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000sigma ROI end 2352 2671 Peak Centroid 2345.78 2664.51 No background subtract performed on this spectrum.

Net Peak Net Area Continuum Area Uncertainty Counts 1.13E+05 350.00 3.40E+03 1.01E+05 323.29 1.34E+03 NUCLIDE /DENT/FICA TION REPORT Nuclide Library Used

C:\\Canberra\\Apex\\Root\\Default\\Library\\ZION LIB-BNL.NLB IDENTIFIED NUCLIDES Nuclide Name Co-60 Id Confidence 0.99 Energy (keV) 1173.23 1332.49

= Energy line found in the spectrum.

- = Manually added nuclide.

? = Manually edited nuclide.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.000 keV Nuclide confidence index threshold = 0.30 Errors quoted at 1.000sigma Yield(%)

99.85 99.98 Activity (pCi/grams) 9.10E+03 8.74E+03 Activity Uncertainty 3.65E+02 3.51E+02 FWHM (keV)

1. 90 2.06

3/5/2019 2:32:02PM Analysis Report for 05-Mar-19-10008 L2-10214D-IJGS-001SS INTERFERENCE CORRECTED REPORT Nuclide Name Co-60 Nuclide Id Confidence 0.997

?

= nuclide is part of an undetermined solution X

= nuclide rejected by the interference analysis Wt mean Activity (pCi/grams) 8.91E+03

@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 1.000sigma Wt mean Activity Uncertainty 2.53E+02 Page 3 of6 Comments

3/5/2019 2:32:02PM Analysis Report for 05-Mar-19-10008

+

L2-10214D-IJGS-001 SS Peak Locate Performed on Peak Locate From Channel Peak Locate To Channel Peak No.

Energy (keV)

All peaks were identified.

M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000sigma UNIDENTIFIED PEAKS

3/5/2019 2:31:48PM

120

4096 Peak CPS(3/4)

Peak Size (CPS)

Uncertainty Peak Type NUCLIDE MDA REPORT Nuclide Library Used

C:\\Canberra\\Apex\\Root\\Default\\Library\\ZION LIB-BNL.NLB Nuclide Energy Yield(3/4)

Activity Nuc/ideMDA LineMDA Name (keV)

(pCi/grams)

(pCilgrams)

(pCl/grams)

An Pk 511. 00 100.00

-1. 96E+OO 1.81E+Ol 1.81E+Ol BE-7 477.60 10.44 4.81E+Ol 1.57E+02

1. 57E+02 K-40 1460.82 10.66 1.03E+02

1. 38E+02

1. 38E+02 Co-60 1173.23 99.85 9.10E+03 1.85E+Ol 2.73E+Ol 1332.49 99.98 8.74E+0 3 1.85E+01 Nb-94 702.65 99.81 4.44E+OO 2.43E+Ol 2.43E+Ol 871. 09 99.89

-6. llE+OO 3.18E+Ol Ag-108m 79.13 6.60

-6.59E+Ol 1.73E+Ol

2. 17E+02 433.94 90.50

-4.lOE+OO 1.73E+Ol 614.28 89.80

-9.24E+OO 2.40E+Ol 722.94 90.80

-2.99E-01 2.75E+Ol Sb-125 176.31 6.84

-l.03E+Ol 5.29E+Ol 1.59E+02 380.45

1. 52 7.90E+02 9.96E+0 2 427.87 29.60 2.27E+Ol

5. 2 9E+Ol 463.36 10.49

-l.13E+Ol l.54E+02 600.60 17.65

-4.79E+Ol

1. 2 0E+02 606. 71 4. 98 3.67E+OO 4.32E+02 635.95

11. 22 l.18E+0 2 l.99E+02 671. 44

1. 79

-2.09E+0 2 1.29E+03 Page 4 of6 Tolerance Nuclide

3/5/2019 2:32:02PM Page 5 of6 Analysis Report for 05-Mar-19-10008 L2-10214D-IJGS-00 1 SS Nuclide Energy Yield(%)

Activity NuclideMDA LineMDA Name (keV)

(pCUgrams)

(pCilgrams)

(pCl/grams)

Ba-133 79.61 2.65

-7.78E+Ol 2 *. 35E+Ol 5.33E+02

81. 00 32.90 2.18E+OO 4.12E+Ol 276.40 7.16

7. 2 0E+Ol

1. 89E+02 302.85 18.34

-l.86E+Ol 7.27E+Ol 356. 01

62. 05 8.14E-01

2. 35E+Ol 383.85 8.94

-3.80E+OO 1.68E+02 Cs-134 475.36

1. 48 9.25E+Ol 2.2 0E+Ol l.11E+03 563.25 8.34

3. 25E+Ol 2. 32E+0 2 569.33 15.37

-5.89E+Ol l.27E+02 604.72 97.62 l.15E+Ol 2.20E+Ol 795.86 85.46

-7.26E+OO 3.23E+Ol 801. 95 8.69 4.68E+Ol 3.23E+02 1038.61 0.99

-l.16E+0 3 3.65E+03 1167.97

1. 79

-9. 2 9E+0 3 6.15E+03 1365.1 9 3.02

-l.09E+02 4.92E+02 Cs-137 661.66 85.10

1. 7 5E+Ol 2.73E+Ol 2.73E+Ol Eu-152 121.78 28.67

-1. 22E+OO 3.16E+Ol 3. 16E+Ol 244.70 7.61

- 3.50E+Ol

1. 82E+02 295.94 0.45

1. 49E+02 2.98E+03 344. 2 8 26.60 5.02E+OO 5.46E+ Ol 367.79 0.86 7.88E+02

1. 72E+03 411.12 2. 2 4 3.59E+02 6.91E+02 443. 96 2.83

-1.92E+Ol 5.59E+0 2 488.68 0.42

- 1.60E+03 4.19E+03 563. 99 0. 49

-3.22E+02 3.94E+03 586.26 0.46

-2.76E+02 4.54E+03 678.6 2 0.47

-l.26E+03 4.93E+03 688.67 0.86

-4.97E+02 2.77E+03 719.35 0.28

3. 11E+03 8.94E+03 778.90 12. 96

-2.61E+Ol 2.08E+02 810.45

0. 32

-7.32E+03 8.80E+03 867.3 7 4.26 7.71E+Ol 7.40E+02 919.33 0.43

-2.55E+02 8.70E+03 964. 08 14.65 6.84E+Ol 2.63E+02 1085. 87 10.24 5.08E+Ol 3.57E+02 1089.74

1. 73

-2.01E+02 2.13E+03 1112.07

13. 69 3.41E+02 2.74E+02 1212.95

1. 43

-3.47E+02 l.52E+03 1249.94 0. 19 5.53E+02 9.42E+03 1299.14

1. 63

-3. 2 1E+02

1. 09E+03 1408.01 21.07 2.15E+O l 6.99E+Ol 1457.64 0.50

9. ) 3E+0 2 2.94E+03 1528.10 0.28

-3.17E+0 3 4.97E+03 Eu-154 123.07 40.40

-1.05E+O l

2. 23E+Ol 2.23E+Ol 247.93 6.89 l.16E+02 2.02E+02 591.76 4.95 2.99E+02

4. 25E+0 2 692.4 2

1. 78 6.58E+02 l.35E+03 723. 30 20.06

-1. 2 6E-01

l. 2 4E+02 756. 80 4.52 5.02E+Ol 5.76E+02 873. 1 8 12.08

1. 24E+Ol 2.65E+02 996. 2 9 10.48

-7.88E+OO 3.39E+02

3/5/2019 2:32:02PM Page 6 of6 Analysis Report for 05-Mar-19-10008 L2-10214D-IJGS-001 SS Nuclide Energy Yield(%)

Activity NuclideMDA LineMDA Name (keV)

(pCilgrams)

(pCl/grams)

Eu-154 1004.76 18.01

5. G2Ei*0l 2.23E+O l 1.95E+02 1274.43 34.80

-6.83E+00 5.05E+0l 1596. 48

1. 80

-4.80E+02 7.63E+02 Eu-155 45.30

1. 31 1.34E+02 3.86E+Ol 2.30E+03 60.01

1. 22 3.88E+02 2.35E+0 3 86.55 30.70 7.88E+00 3.86E+0l 105.31 21.10

- 9.92E+00 4.77E+01 Ra-22 6 186.21 3.64 5.71E+01 3.02E+02 3.02E+02 Pa-231 27.36 10.30 1.09E+03 2.29E+02 2.29E+02 283.69

1. 70 4.10E+02 7. 97E+02 300.07 2.47

-3.40E+02 5.37E+02 302.65 2.20

-1.55E+02 6.06E+02 330.06

1. 40 1.61E+02

1. 03E+03 U-2 35 143.76

10. 96

-2.14E+0l 1.93E+O l 8.27E+0l 163.33 5.08 4.41E+0l 2.14E+02 185.71

57. 2 0

4. 71E+00

1. 93E+0l 202.11 1.08 1.99E+02 1.08E+03 205.31 5.01

-3.78E+02 2.36E+02 Am-241 59.54 35.90 1.84E+0l 8. 19E+0l 8.19E+01

+ = Nuclide identified during the nuclide identification

. = Energy line found in the spectrum

> = MDA value not calculated

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

? = CAUTION: MDA value is inconsistent with Currie MDA at 95% confidence level

V)

+-'

C:

I 30000 25000 20000 8 15000 10000 5000 05-MAR-19-100087OB3.CNF

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1:

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500 1000 1500

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ROI Type: 1 2000 channel 2500 3000 3500 4000

DETAILS Division:

RP Name:

Discrete radioactive particle Located outside the radiological restricted area (RRA) in SU10214

==

Description:==

On 11/18/19, while performing an end of day survey in SU10214 where CCDD is loaded, near the railcar lid storage area, a discrete radioactive particle (DRP) was located 3 to 4 below the surface. The DRP was surveyed and read 100,000 CPM using an M12 / 4410 gamma detector. A Telepole was also used to read the DRP at contact, and it read 1 mRem/hr.

The DRP was captured and sent to chemistry for isotopic analysis. A follow-up survey of the area was completed the next morning in the same area where the DRP was located. No DRPs were found.

A copy of the attached initial survey has been added to the CR.

Start Date:

11/19/2019 11:06:00 AM End Date:

11/21/2019 12:00:00 AM Status:

Completed PROPERTIES SIG Level:

3 Date/Time Initiated:

11/19/2019 11:06:00 AM Brief

Description:

Discrete radioactive particle Located outside the radiological restricted area (RRA) in SU10214

==

Description:==

On 11/18/19, while performing an end of day survey in SU10214 where CCDD is loaded, near the railcar lid storage area, a discrete radioactive particle (DRP) was located 3 to 4 below the surface. The DRP was surveyed and read 100,000 CPM using an M12 / 4410 gamma detector. A Telepole was also used to read the DRP at contact, and it read 1 mRem/hr.

The DRP was captured and sent to chemistry for isotopic analysis. A follow-up survey of the area was completed the next morning in the same area where the DRP was located. No DRPs were found.

A copy of the attached initial survey has been added to the CR.

Immediate Actions:

The DRP was secured until chemistry was ready to perform an isotopic analysis.

Screened for 10 CFR 50.75*VHQWVXUYH\\UHVXOWVIURPWKHLQLWLDODQGIROORZXSVXUYH\\VWR)66

Recommended Actions:

Page 1 of 3 ES-ZION-CR-2019-0166 Page 1 of 3 Condition Report

~

ENERGYSOLUTIONS l

l 1

1

Trends Cause Codes:

A7-B2-Radiological - Hazardous material problem Event Codes:

3E - Radiation Protection - Equipment or area contamination Close to actions completed.

Date Discovered:

11/18/2019 Issue Identified By:

Initiator Related Documents:

Reviewed Date/Time:

11/19/2019 12:00:00 AM Maintenance Rule Applicable?

False Reportability Applicable?

False Operability Review Required?

False CAQ/NONCAQ?

Non-CAQ 50.75g Issue?

True 7230D Issue?

False MRC Review Meeting Date:

MRC Approval:

False MRC Comments:

Responsibilities Initator:

David S. Villicana Shift Manager:

Jason P. Pacheco-ext CR Owner:

Timothy W. Plutchak Events Step Person Start Date End Date Initiation:

David S. Villicana 11/19/2019 11/19/2019 OP Review:

Jason P. Pacheco-ext 11/19/2019 11/19/2019 Screening:

Timothy W. Plutchak 11/19/2019 11/21/2019 MRC Review:

Timothy W. Plutchak Pending CA Completion:

Timothy W. Plutchak 11/21/2019 11/21/2019 Verify and Closure:

Timothy W. Plutchak 11/21/2019 11/21/2019 Page 2 of 3 ES-ZION-CR-2019-0166 Page 2 of 3 Condition Report

~

ENERGYSOLUTIONS

Verification Verification:

Timothy W. Plutchak 11/21/2019 Verification Comments Close to actions taken as recommended in MRC meeting on 11/21/19 Page 3 of 3 ES-ZION-CR-2019-0166 Page 3 of 3 Condition Report

~

ENERGYSOLUTIONS I O +- Z..

SURVEY UNIT CLASSIFICATION

SUMMARY

ZS-LT-300-001 Revisio Information Surv Area No.: _1_02_00 _________ Survey Unit No.: _1_02_1_4_F ________

+--

Surve Unit Name: Construction Parkin Area Type of Classification Initial V crification O Change [8J Final (8l Class 1 D Class 2 18)

Class 3 D

1)

2)

3) tion of Area during Facility Operation - This area contained the construction parking area which consist edrock.

umented Process Events, Spills and/or Radiological Incidents (HSA) - None.

Operational Survey Results - None of the past operational survey results served as a basis for t classification.

-down Performed [8'J Date: 12/5/19 Time: 1330 Not Performed D ations and/or Findings - None.

Characterization [8'J RASS/RA 0 Turnover D ary - The highest soil sample result in this SU was 0.11 pCi/g of Cs-13 7.

Comm ts : This swvey unit was part of the original Survey Unit 10214 which the HSA classified as Class 3.

On 6/1 /17, due to changing radiological and operational conditions brought about by site deoommissioning activiti inside or adjacent to this area, 10214 was re-classified as a Class 2 and split into four survey units:1 214.A, 10214B, 10214C and 10214D. In November of2019 a 0.02 µCi particle was discovered in the southw portion of survey unit 10214C. This area is now reclassified as Class 1 and designated Survey Unit 10214 Class l ~

Class 2 D Class3 0 Non-Impacted D Richard Mandi~ ~ l'i Reviewed:

ign NameiDate)

If the c assification of the survey unit J,.as changed from the initial classification Date: 12/5 U ?

r tion/Ucense Termination Manager)

FSS Sample Plan Ll-10214F-F 2.. * +-

z._

SURVEY UNJT CLASSJFICATION

SUMMARY

ZS-LT-300-001-002 Revision 6 Information Use Survey Area No.: 10200 Survey Unit No.:

10214F Survey Unit Name: Construction Parking Area Type of Classification Initial 0 Verification D Change ~

Final ~

Comments:

Basis for Current Classification Class 1 D Class 2 ~

Class 3 D

1) Function of Area during Facility Operation - This area contained the construction parking area which consisted of crushed rock.

2) Documented Process Events, Spills and/or Radiological Incidents (HSA) - None.

3) Past Operational Survey Results - None of the past operational survey results served as a basis for the current classification.

Visual lnspection & Walk-down Performed IZ] Date: 12/5/19 Time: 1330 Not Performed D

1) Observations and/or Findings - None.

Current Radiological Survey Data Characterization IZl RASS/RA 0 Turnover D

1) Summary - The highest soil sample result in this SU was 0.11 pCi/g of Cs-137.

Comments : This survey unit was part of the original Survey Unit 10214 which the HSA classified as Class 3.

On 6/12/17, due to changing radiological and operational conditions brought about by site decommissioning activities inside or adjacent to this area, 10214 was re-classified as a Class 2 and split into four survey uruts:10214A, 10214B, 10214C and 10214D. In Novemberof2019 a 0.02 µCi particle was discovered in the southwest portion of survey unit 10214C. This area is now reclassified as Class 1 and designated Survey Unit 10214F.

Classification Class 1 IZl Class 2 D Class 3 D Review & Approval Submitted:

Richard Mandia/~ -Ll.:.-5--I'; Reviewed:

(Pri ign Name/Date)

If the classification of the survey unit has changed from the initial classification Approved:

(Print/Sign Characterization/License Te,inination Manager)

5e ~e. l £P---z.__

-r'n~ 4. Mo--e-h."""' e---r-Date:

n/ G--

f)

,4AJ,v-1o*lq FSS Sample Plan Ll-10214F-F Non-Impacted D SURVEY UNIT CLASSIFICATION WORKSHEET ZS-LT-300-001-002 Revision 6 Information Use Survey Area No.: 10200 Survey Unit No.:

10214F SECTION 1 - Class 1 (checked box indicates affinnative)

Area previously subjected to remedial actions (see MARSSIM section 5.4).. ***************************** D Leaks and/or spills of radioactive material are known to have occurred.*-*********************************** D Former burial or disposal site for radioactive waste.*******-*************************************-************************ D Radioactive waste storage site.******************************************************************************************************** D The presence of discrete solid radioactive material with high specific activity. ************************

r8]

Considering the potential for all impacted areas to exceed the DCGL, does the Yes No existing data provide a high degree of confidence that no individual measurement

!x7 will exceed the applicable DCGL in this survey unit?*****************************************************

~

IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 1 AREA.

IF YES, CONTINUE WITH THE CLASSIFICA TJON PROCESS BELOW.

SECTION 2 - Class 2 Radioactive materials present in unsealed form. ***************************************-************************************ D Potentially contaminated transport route. ********************************** ************************************************** D Area downwind and/or downstream from an effluent release point. ****************************************** D Upper walls or ceiling of building subjected to airborne radioactivity. ************************************** D Area where low concentrations of radioactive materials were handled. ************************************* D Perimeter of former contamination control area. ******* ************************************** ***************************** D Yes No I

M p

A C

T E

D Does the existing data provide a high degree of confidence that no individual measurement will exceed 5% of the applicable DCGL?*********.. **********************- ***************

A IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 2 AREA.

R IF YES, CONTINUE WITH THE CLASSIFICATION PROCESS BELOW.

E SECTION 3 - Class 3 Buff er zone around a Class 1 or Class 2 area. * *** * ** * ** * ** * * ** * ** * ** *** * * ** ***** * ************ * *** ***** ** * ** * ** *** ***** ** * *

D Potential for low levels ofresidual radioactivity. ************************************************************************* D Yes No Is there no reasonable potential for contamination in this area?************************************* D D IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 3 AREA.

IF YES, CONTINUE WITH THE CLASSIFICATION PROCESS BELOW.

SECTION 4 Sufficient process knowledge and/or historical data to waITant a non-impacted designation?

Yes No IF NO OR UNKNOWN, THEN THE SURVEY UNIT IS CLASSIFIED AS A CLASS 3 AREA.

IF YES, THE SURVEY UNIT IS NON-IMPACTED.

Submitted: Richard Mandia/~ __g__12-4....-,"\\

(Print/Siame/Date)

FSS Sample Plan Ll-10214F-F A

Record for 10 CFR 50.75 (g) or 10 CFR 72.30 (d)

ZS-RP-104-001-003 Revision 1 Information Use I.

Summary A discrete radioactive particle (DRP) was found in SU10214 by the area known as the CCDD pile.

II.

Event Description & Location A DRP reading 100K CPM using an Ml2/4410 detector and 1 mrem /hr. on contact using a Telepole was found 3-4" below the surface.

III.

Radiological Information An isotopic analysis was completed on the DRP. Results showed Co 60 0.02 uCi.

IV.

Pathway Analysis Analysis using Varskin showed that over a 24-hour period, the dose contribution would be 3 mremCEDE.

V.

VI.

References See attached information.

Condition Report ES-ZION-CR-2019-0166 David vmO fX)::----

Radiation Protection Manager Approval

_ll_j _1Q_j -1.2___

Date

Survey#:.;:,,?C, \\:\\, -

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==

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Surveyor Name{s): (Print}~ o\\...~ R(:..e.)..,

{Sign~ 1

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<1000 dpm/l00cm2 (unless noted below) IMasslinns

113-y 1a 113-v 1a Letter I !3-y DRPs detected: SillYes No ON/A Purpose of Survey:

Comments:

0 RWP Decon Recommended g] Routine Shielding Recommended 0 lnvestigatlonal D

Release Recommended D Release ii None O Other (specify)

Other (specify)

_ _ _ _ = Rad boundary *#/# = Contact/ 30cm dose rates

= Gamma dose rate

(!) = Smear location Peer Check (Signature):

Air Sample taken: Dyes 161no All dose rates in mrem/hr unless otherwise noted

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D RWP D

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==

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11/19/2019 8:07:37AM

~pex-Gamma Analysis Report for 19-Nov-19-10007 HOT SOIL FROM SE CORNER OF WEST PARKING LOT GAMMA SPECTRUM ANAL YS/S Sample Identification Sample Description Sample Type Unit Sample Point Sample Size Facility Sample Taken On Acquisition Started Procedure Operator

uetector Name Geometry Live Time Real Time Dead Time Peak Locate Threshold Peak Locate Range {in channels)

Peak Area Range {in channels)

Identification Energy Tolerance Energy Calibration Used Done On Efficiency Calibration Used Done On Efficiency Calibration Description Sample Number Certificate Name Certificate Date Peak Analysis Performed on

19-Nov-19-10007

HOT SOIL FROM SE CORNER OF WEST PARKING LOT

Soil 1.000E+02 grams

Default

11/18/2019 3:00:00PM

11/19/2019 7:29:30AM

1 L_Bottle_Water

Administrator

352

1L Bottle Water

600.0 seconds

629.1 seconds

4.62 %

3.00

120 - 8192

1.000 keV

11/4/2019

11/19/2019

81387

Eu155-Na22

1/7/2013 12:00:00PM PEAK ANALYSIS REPORT 11/19/2019 7:40:03AM Peak Analysis From Channel Peak Analysis To Channel

120

8192 Page 1 of6

11/19/2019 8:07:37AM Page 2 of6 Analysis Report for 19-Nov-19-10007 HOT SOIL FROM SE CORNER OF WEST PARKING LOT Peak Energy ROI No.

(keV) start 1

310.68 1236 -

2 1173.11 4677 -

3 1332.33 5313 -

M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000sigma ROI Peak end Centroid 1248 1242.87 4706 4 691. 82 5344 5329.18 No background subtract performed on this spectrum.

Net Peak Area l.82E+02 l.49E+05 1.35E+05 Net Area Continuum Uncertainty Counts 110. 22 4.55E+03 418.59 5.49E+03 381. 99 2.23E+03 NUCLIDE /DENT/FICA TION REPORT Nuclide Library Used

C:\\Canberra\\Apex\\Root\\Default\\Library\\ZION LIB-BNL.NLB IDENTIFIED NUCLIDES Nuclide Name Co-60 Id Confidence 0.99 Energy (keV) 1173.23 1332.49

= Energy line found in the spectrum.

- = Manually added nuclide.

? = Manually edited nuclide.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance: 1.000 keV Nuclide confidence index threshold = 0.30 Errors quoted at 1.000sigma Yield(%)

99.85 99.98 Activity (pCilgrams) 1.92E+04

1. 86E+04 Activity Uncertainty 7.71E+02 7.47E+02 FWHM (keV) 0.41

1. 92 2.04

11/19/2019 8:07:37AM Analysis Report for 19-Nov-19-10007 HOT SOIL FROM SE CORNER OF WEST PARKING LOT INTERFERENCE CORRECTED REPORT Nuclide Name Co-60 Nuclide Id Confidence 0.997

?

= nuclide is part of an undetermined solution X

= nuclide rejected by the interference analysis Wt mean Activity (pCilgrams)

1. 89E+04

@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 1.000sigma Wt mean Activity Uncertainty 5.37E+02 Page 3 of6 Comments

11/19/2019 8:07:37AM Analysis Report for 19-Nov-19-10007

+

HOT SOIL FROM SE CORNER OF WEST PARKING LOT Peak Locate Performed on Peak Locate From Channel Peak Locate To Channel Peak No.

Energy (keV) 1 310.68 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000sigma UNIDENTIFIED PEAKS

11/19/2019 7:40:03AM

120

8192 Peak CPS(%)

Peak Size (CPS)

Uncertainty 3.03324E-01 60.56 Peak Type D-Esc NUCLIDE MDA REPORT Nuclide Library Used

C:\\Canberra\\Apex\\Root\\Default\\Library\\ZION LIB-BNL.NLB Nuclide Energy Yield(%)

Activity NuclideMDA LineMDA Name (keV)

(pCi/grams)

(pCilgrams)

An Pk 511. 00 100.00 2.67E+Ol 3.93E+Ol 3.93E+Ol BE-7 477.60 10.44 4.58E+Ol 3.56E+02 3.56E+02 K-40 1460.82 10.66 4.60E+Ol 2.42E+02 2.42E+02 Mn-54 834.85 99.98 2.34E+Ol 6.31E+01 6.31E+Ol Co-60 1173.23 99.85 1.92E+04 4.99E+Ol 7.09E+Ol 1332. 49 99.98

1. 86E+04 4.99E+Ol Nb-94 702.65 99.81

-7.93E+Ol

5. OlE+Ol 5.0lE+Ol 871. 09 99.89 3.86E+Ol 6.88E+Ol Ag-108m 79.13 6.60

-3.75E+02 3.85E+Ol 5.71E+02 433.94 90.50

-5.71E+OO 3.85E+Ol 614.28 89.80

-3.48E+Ol 5.02E+Ol 722.94 90.80

-4.53E+Ol 5.63E+Ol Sb-125 176.31 6.84 2.05E+02 1.16E+02 3.28E+02 380.45

1. 52

-l.06E+02 2.15E+03 427.87 29.60

-4.27E+Ol 1.16E+02 463.36 10.49

-l,82E+02 3.43E+02 600.60 17.65

-1. 73E+02 2.41E+02 606.71 4.98 2.67E+02 9.01E+02 Page 4 of6 Tolerance Nuclide

11/19/2019 8:07:37AM Page5of6 Analysis Report for 19-Nov-19-10007 HOT SOIL FROM SE CORNER OF WEST PARKING LOT Nuclide Energy Yield(%)

Activity NuclideMDA LineMDA Name (keV)

(pCilgrams)

Sb-125 635.95

11. 22

-1. 05E+02 1.16E+02 4.12E+02 671. 44

1. 79

-6.18E+02 2.69E+03 Ba-133 79.61 2.65

-3.23E+02

5. 00E+0l

1. 40E+03

81. 00 32. 90 3.12E+0l

1. 09E+02 276.40 7.16

1. 09E+02 4.25E+02 302.85 18.34 2.93E+0l 1.66E+02 356.01 62.05

-3.42E+0l 5.00E+0l 383.85 8.94

-1.41E+02 3.66E+02 Cs-134 475.36

1. 48 9.78E+0l 4.39E+0l 2.43E+03 563.25 8. 34

-2.73E+02 4.85E+02 569.33 15.37 2.57E+02 2.66E+02 604.72 97.62 1.16E+0l 4.39E+0l 795.86 85.46

-2.70E+0l 6.81E+0l 801. 95 8.69 3.97E+0l 6.78E+02 1038.61 0.99

-1.60E+03 7.28E+03 1167. 97

1. 79

-1.29E+04 1.37E+04 1365.19 3.02 3.17E+02 9.20E+02 Cs-137 661.66 85.10

-1. 95E+Ol 5.57E+0l 5.57E+0l Eu-152 121. 78

28. 67

-4.86E+00 8.13E+0l 8.13E+0l 244. 70 7.61 1.20E+02 3.91E+02 295.94 0.45

-1. 17E+03 6.74E+03 344.28 26.60 2.68E+0l 1.17E+02 367.79 0.86 7.25E+02

3. 72E+03 411. 12 2. 24

-2. l0E+Ol 1.53E+03 443. 96 2.83

-9.32E+02

1. 23E+03 488.68 0.42

-2.35E+03 8.86E+03 563.99 0.49 1.58E+03 8.26E+03 586.26 0.46

-2.01E+02 9.04E+03 678.62 0. 47 1.78E+03 l.03E+04 688.67 0.86

-2.20E+03 5.70E+03 719. 35 0.28

-2.63E+03 1.82E+04 778.90 12.96

-4.28E+02 4.38E+02 81 0.45 0.32

-1. 69E+04

1. 86E+04 867.37 4.26

-5.45E+02

1. 59E+03 919.33 0. 43 4.53E+02

1. 82E+04 964.08 14.65 6.99E+0l 5.45E+02 1085.87 10.24

-5.61E+02 7.17E+02 1089.74

1. 73

-1.52E+03 4.35E+03 1112. 07 13.69 5.21E+02 5.51E+02 1212.95

1. 43 2.30E+03 3.02E+03 1249.94 0.19 1.62E+04 1.86E+04 1299.14

1. 63

-1. 61E+03 2.06E+03 1408.01 21.07

-5.66E+0l 1.26E+02 1457.64 0.50 5.47E+03 5.16E+03 1528.10 0.28 1.18E+04 9.34E+03 Eu-154 123. 07 40.40

-2.44E+0l 5.73E+0l 5.73E+0l 247.93

6. 89 3.69E+02 4.32E+02 591. 76 4.95

-4.49E+02 8.43E+02 692.42

1. 78 9.68E+02 2.77E+03 723. 30 20.06

-4.55E+0l 2.55E+02 756.80 4.52

- 6.04E+02 1.22E+03

~

11/19/2019 8:07:37AM Page 6 of6 Analysis Report for 19-Nov-19-10007 HOT SOIL FROM SE CORNER OF WEST PARKING LOT Nuclide Energy Yield(%)

Activity NuclideMDA LineMDA Name (keV)

{pCilgrams)

Eu-154 873.18 12.08 3.01E+02 5.73E+0l 5.73E+02 996.29 10.48

-3.42E+02 6.99E+02 1004.76 18.01 2.71E+02 4.07E+02 1274.43 34.80

-2.80E+0l 9.49E+01 1596. 48

1. 80 3.79E+02

1. 46E+03 Eu-155 45.30

1. 31

1. 93E+03 9.95E+0l 6.59E+03 60.01

1. 22 2.48E+02 6.55E+03 86.55 30.70

1. 41E+0l 9.95E+0l 105.31 21.10 6.02E+0l 1.17E+02 Ra-226 186.21 3.64

-1.11E+02 6.38E+02 6.38E+02 Pa-231 27.36 10.30 6.80E+03 7.45E+02 7.45E+02 283.69

1. 70 3.27E+02 1.79E+03 30 0.07 2.47 4.06E+02

1. 23E+03 302.65 2.20 1.09E+03 1.38E+03 330.06

1. 40 l.19E+03 2.19E+03 U-235 143.76

10. 96

-4. 72E+0l 4.06E+0l 2.08E+02 163.33 5.08 2.78E+02 4.43E+02 185.71 57.20 1.09E+0l 4.06E+0l 202. 11 1.08

- 2.15E+03 2.24E+03 205.31 5.01

-1.37E+02 4.93E+02 Am-241 59.54 35.90

-8.94E+0l 2.29E+02 2.29E+02

+

= Nuclide identified during the nuclide identification

= Energy line found in the spectrum

= MDA value not calculated

= Half-life too short to be able to perform the decay correction

?

= CAUTION: MDA value is inconsistent with Currie MDA at 95% confidence level

Varskin 6.0 Date: 11/20/2019 Time: 12:13:49 PM Electron Photon Total Zion DRP in West Parking Lot Point Source Geometry Irradiation Time: 2.40E+0l hr Irradiation Area: l.00E+0l cm2 Skin density thickness: 7.00E+00 mg/cm2 Air Gap Thickness: 0.00E+00 mm Nuclide: Co-60 [25.5] 38 Half Life: 46205.6 h Average Electron Energy: 0.09690186 MeV X-99 Distance: 0.03300993 cm Source Strength: 2.00E-02 µCi Initial Dose Rate Dose (No Decay)

Decay-Corrected Dose 7.13E-03 rad/h 2.55E-04 rad/h 7.38E-03 rad/h l.71E-01 rad 6.12E-03 rad

1. 77E-0 1 rad 1.71E-01 rad 6.12E-03 rad

1. 77E-0 1 rad

Survey#: ~Ci\\<':\\ - i~ ~~

Unit: rJ,/4 BLDG: 1/~ ELEV: 5 C:,~'

RWP:,..;] C \\ ~ 0 00 l Dosimetry Placement: la Chest Head Thigh Other

""/4 Instrument Model Serial#

~1t:i80

!.,,_Ci, /t.j -067 I

AII Smears and/or Large Area Swipes,-------,1

<1000 dpm/100cm2 {unless noted below) l Masslinns

113-y la I#

113-v la Letter I 13-J DRPs detected : )i:!Yes No ON/A Purpose of Survey:

Comments:

D RWP D

Decon Recommended 81 Routine Shielding Recommended D lnvestigational Release Recommended D Release 151 None D Other (specify)

Other (specify)

_ _ _ = Rad boundary *#/#=Contact/ 30cm dose rates

= Gamma dose rate (1f) = Smear location E3 = Large area swipe Peer Check (Signature):

==

Description:==

?<A.r-+;~\\e. L.,.c.~JeA Date: 11 /J?,/ \\C)

Time: 15 YS:

~

Surveyor Name(s): (Print) ~ c;'"'!"\\ Re:..e..~

{Sign!.&,

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ML21102A392

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