hematite decommissioning project - procedure hdp-pr-fss ... · survey area: survey unit: overview:...

Survey Area:Survey Unit:

Overview:

BSA 02-01 ,6t25t2015 Page P-l of6

HDP-PR-FSS-701, Final Status Survey Plan Development @evision 7)APPEIIDIX P-3

FSS PLAN

BSA 02 Description: Plant Soil Area. Open Land Area0l Description: Subsurface Soils under Building 110

The Survey Unit (SU) identified as Building Survey Area (BSA) 02-01 has been prepared for FinalStatus Survey (FSS) by the Hematite Decommissioning Project (HDP). Although designated as aBSA in the HDP Decommissioning Plan, this SU addresses the subsurface soils underlying Building230. Therefore, this FSS approach is more akin to a modified Land Survey Area (LSA)implementation. This appendix provides an overview of the proposed FSS implementation as wellas general and specific instructions for the technicians responsible for performing the FSS.

o Data Quality Objectives

l. Health Physics (HP) personnel performing FSS duties meet the qualifications listed in HDp-pR-HP-102 Health Physics Technician Training and have received training and instructioncommensurate with their duties. The Radiation Safety Officer has approved all FSS personnelto perform work associated with their individual roles and responsibilities. Training records aredocumented in accordance with HDP-PR-GM-020 Training Material Deve[opment andDocumentation of Training.

2. All I{DP FSS procedures ("700 series") have been reviewed, revised, and validated in order toensure performance of actual FSS work activities reflect the requirements detailed in theindividual FSS Procedures and the HDP Decommissioning plan (Dp).

3. All FSS instrumentation has undergone a receipt inspection by HDP Quality Assurancepersonnel, is within current calibration, and is determined to be functioning within acceptableranges based on initial set-up and daily source checks in accordance with HDP-pR-Hp-4llRadiological Instrumentation. HP technicians will confirm that environmental conditions (e.g.operating temperature range, no standing water) are acceptable for use of field instrumentation.

o Location

BSA 02-01 is designated Class 2 and is located in the Plant Soil Sunogate Evaluation Area directlyunderneath Building 230. The planar area of BSA 02-01 is3642 m2. The eight (8) FSS samplinglocations within BSA 02-01 were based on asystematic random-start triangular grid spacedover the footprint of the buildinrg- 3,642 m2.'

o Background

The land area comprising BSA 02-01 was initiallyconsidered a Class 3 SU in most DP drawings andtables. However, since there was at least onedrawing which indicated subsurface soils underbuildings as Class 2, the more conservativeclassification has been selected. Since BSA 02-0l is classified :rs Class 2, there is lowprobability that this subsurface soil will exceedthe Unifurm Stratum DCGLs. Therefore, noremedial excavation was required for this SU.Although some floor drain pipes under the

Quality Record Westinghouse Non-Proprietary Class 3

HDP Satellite Site Yiew:See BSA 02-01 callout @uitding 230)

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HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 7)APPBNDIX P.3

FSS PLAN

Building 230 slab were removed and disposed of as waste, there was no indication of collateral soilcontamination as evidenced by negative remedial action support survey (RASS) data. Isolation andcontrol measures are minimal since the subject area is underlying Building 230. After collection ofFSS samples, boreholes will be covered or patched.

Subsurface soil samples under Building 230 collected during earlier site characterization activities(Hematite Radiological Characterization Report, HRCR, 2009) were reviewed and supported theinitial DP Class 3 classification and compliance to the Uniform Stratum DCGLs. An eight (8) pointrandom-start systematic triangular sampling grid was developed for BSA 02-01 based on thestatistical evaluation of the twenty-three sample results collected during the HRCR.

o Criteria

All FSS analytical results for samples collected within BSA 02-01 will be evaluated against the

Uniform Stratum CSM DCGLs. FSS sampling is implemented using the "Three-Layer" multi-CSM, however analytical results will be conservatively evaluated using the UniformStrutum DCGLs.

Radionuclide.; ".,,,. :..'!r. . { .: ,.. i . l tri rr .: i-' , .l. Uniform

Stratum(pCi/e)

5:.1 t'::;1.'r,

,:!,ifi"ilctiiiliitiiili-

lrl1':.,1! lt tit$ .1r,:;t'r L*t-ir;i;

,.\gi iirii;:?t

Radium-226+C' 1.9Technetium-99 1 25.1Thorium-232+C" i 2.0Uranium-234 195.4Uranium-235+D' 51.6Uranium-238+D' r68.8

Table adapled ftom HDP FSS Procedure HDP-PR-FSS-701 Final Status Survey Plan Development, Revision 7, June 2015'The reported DCGL.s are the activities for the parent radionuclide as specified and were calculated to account for the dose contributionfrom insignifi cant radionuclides."+D indicates the DCGL" includes short-lived (half-life S 6 mo.) decay products.o+C indicates the DCGL". includes all radionuclides in the associated decay chain.

o Implementation

As a Class 2 SU, BSA 02-01 would typically require a minimum 50% GWS using an uncollimated2" x2" sodium iodide (NaI) detector. However, BSA 02-01 is a special case in that the subject soilsunderlie an occupied building. FSS technicians will document the gross count rates at each boreholelocation using a NaI detector and take a 1-minute static measurement on exposed soil before samplecollection. In areas where floor drains and subfloor piping have been removed such as the formerRod Load restrooms and the Cushman room, a manual GWS (GPS datalogging not possible indoors)will be performed within the trenches. GWS coverage in the pipe removal areas will be 100% ofaccessible areas.

Based on a statistical evaluation of the HRCR dataset, an eight point sampling size was calculated;each systematic location was determined by using GIS software^to produce a random-start triangulargrid pattern with spacing appropriate forthe SU size (3,642 m') and number (8) of locations. TheBSA 02-01 is an unexcavated land area, therefore, a total of eight surface stratum and eight rootstratum composite samples will be collected at all systematic locations. Samples will also be


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HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 7)APPENDIX P-3

FSS PLAN

collected from the top six inches of the deep stratum (1.50 m - 1.65 m bgs) for archiving, andanalyzed only if the overlying root stratum sample result in a given location exceeds a SOF of 0.5.

Judgmental biased samples will be collected within the trenches to verifu contamination from pipesdid not leak into the surrounding soil.

A minimum of one QC duplicate per SU (at least 5%o of the total number of samples) will be

collected.

FSS IMPLEMENTATION SUMMARY TABLE

Gamma Walkover Survev (GWS):

Scan Coverage

100% of exposed soil in pipe removaltrenches; document the on-contact surfacesoil NaI count rate at each borehole locationas a I -minute static count measurement priorto samolins.

Scan MDC (2" x 2" NaI) 3 4.3 pCi/ gtotal uranium ; 0.7 5 pCil g Th-232;1.04 oCils.Fla-226*

lnvestieation Action Level (IAL) 1,624 net cpm**Systematic Samnlins Locations:

Depth Number ofSample

Comments

These samples will be collected on asystematic triangular grid. *Excavation

stratum samples will be archived andanalyzed only if the associated rootstratum result exceeds a SOF of 0.5.

0 - 15 cm (Surface) 8

15 cm - 1.5 m (Root) 8

> 1.5 m (Excavation) 8*

Biased Survev/Sampling Locations:

Biased samples may be collected during GWS in the removed piping trenches at the discretion ofthe HP Technician, after statistical analysis of the survey data, or at the direction of the FSSSupervisor.

Instrumentation

Ludlum 2221 with 44-10 (2x2 NaI) detector; withcollimation for investisations

Used for GWS and to obtain staticcount rates at biased measurementlocations.

*Values based on information provided in HDP-TBD-FS5-002, "Evaluation and Documentationof the Scannins Minimum Detectable Concentrations (MDC) for Final Status Survevs /FSS).**IAL is the net count per minute (ncpm) equivalent of an activity concentration less than theUniform Stratum DCGLw derived from the technical bases presented in HEM-MEMO-I5-021and HDP-TBD-FSS-003 "Modeling and Calculation of Investigative Action Levels for FinalStatus Soil Survev Units". Westinshouse. March 2015.


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HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 7)APPENDIX P-3

FSS PLAN

General Instructions:

l. Summarize daily work activities on the log sheets provided in Appendix P-6. Provide a description ofsite conditions (including the condition of isolation controls), samples collected and the status of gammasurveys at borehole openings for every shift that involves work in this survey unit. Document thesurveyor name and instrumentation used for each borehole location in Appendix P-6 for reportingtraceability. In the event that a situation arises where the survey instructions cannot be followed as

written, stop work and contact the FSS Supervisor for resolution. All changes to the survey instructionsshall be approved by the RSO before continuing work and be documented in the FSS Field Log.

2. In accordance with HDP-PR-FSS-701, Finql Status Survey Plan Development (Sec. 8.4.2),documentation of activities performed, equipment used, and potential safety hazards that may beencountered during the performance of characterization activities (along with associated controls) will bedocumented using the FSS Daily Task Briefing log sheet.

3. A gamma walkover survey (GWS) will be performed within the pipe removal trenches using a 2"x2"NaI (Tl) detector. Move the survey probe in a serpentine pattern approximately 6-inches off-set fromcenterline to the body (e.g., "shoulder-to-shoulder") with the probe as close to the surface as possible;maintaining the detector as close as possible to the surface (nominally 1", but not to exceed 3-in.distance from the surface). The meter will be moved at a speed of approximately 0.3 meter (or I .0 feet)per second or less. The gamma walkover survey will cover the percentage of the accessible surface areaswithin the area of interest as indicated in the table above.

4. In accordance with HDP-PR-HP-4ll Radiological Instrumentation, confirm that FSS instrumentation iswithin the current calibration period, has been daily source checked, and environmental conditions areacceptable for use as per the manufacturer's recommended operating parameters.

5. Verifl' that isolation controls established in accordance with HDP-PR-HP-602 Data PackageDevelopment and Isolation and Control Measures to Support Final Status Survey are in place prior tothe start of FSS. Ensure isolation controls include, as necessary, the use of stanchions, "Caution" tape,or rope to alert Building 230 personnel to keep a safe distance from the soil collection work areas. Plasticsheeting will be used to protect the floor from recovered borehole spoils.

6. One-minute static gamma count rates on contact with the surface soil at each borehole location will bedocumented using a 2"x2" NaI detector before sample collection. Protect the probe from borehole soilsby sheathing in a latex glove. Document the borehole conditions in the FSS Field Log.

7 . BSA 02-01 is a Class 2 Survey Unit. Each of the eight (8) sample locations were systematically spacedon a random-start triangular grid pattern using spreadsheet and GIS software. Boreholes will bephysically marked inside the building using measuring tape to locate pre-determined X-Y coordinates (infeet) based on a starting point (origin) set to the southwest comer of Building 230. However, all samplelocations will eventually be correlated with standard coordinates (Missouri East state plane, NAD 1983)for reporting purposes. In the case of inaccessible sampling locations, additional sample coordinatesmay be generated with the FSS Supervisor's and RSO's approval in order to identiff acceptable alternatesampling locations.

8. A map of the survey unit showing predetermined sample locations with associated X-Y grid coordinateswill be generated. A copy of the sample map and survey locations will be attached to the surveyinstruction.

9. Perform daily pre and post QC source checks in accordance with HDP-PR-HP-416 Operation of the


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HDP-PR-FSS-701, Final Status Survey Plan Development @evision 7)APPENDIX P-3

FSS PLAN

Ludlum 2221for Final Status Survey.

10. A soil sample will be collected from each location and depth as determined in the provided AppendixP-4. The random sample locations will include eight (8) samples taken at a depth of 0 - l5 cm (surface),eight (8) samples collected at a depth of 15 cm - I .5 m (root), and eight (8) samples collected at a depthof 1.5 m to 1.65 m (excavation).

NOTE: If trash, waste, or other non-native materials are observed during sample collection, stopsampling activities and noti$ HP Supervision (or Radiological Engineering) before collectingsamples at any sample location in the unit.

1 1. All samples collected as part of this survey will be analyzed at an off-site laboratory by gammaspectroscopy for radium, thorium, and uranium, and ICP-MS for Tc-99.

Snecific Instructions :

NOTE: Unless otherwise indicated, the performance of these specific instructions is the responsibility of theHP Technician.

Before Beginning Work

1. Rad. Engineer/IlP Technician: Verifu, each shift, that isolation controls, established in accordancewith HDP-PR-HP-602, are in place prior to the start of FSS using the Daily Task Briefing log sheet.

2. Rad Engineer/IlP Technician: Verifu that survey instrumentation is within the current calibrationperiod by checking the calibration due date for each piece of instrumentation used for FSS. Performdaily pre- and post-survey daily source checks for handheld survey instrumentation in accordance withHDP-PR-HP-4I1. Confirm that environmental conditions in which the survey will be performed arewithin the manufacturer's recommended operating range (e.g. temperature between -4" F to 122" F).

3. Rad. Engineer/IlP Technician: Perform a daily task-specific briefing; documenting the attendants,planned work activities, anticipated hazards, and controls on the FSS Daily Task Briefing log sheet.

NOTE: Since soil sampling to a depth greater than one foot is required, ensure HDP Safety &Health is made aware of the activity and subsurface utilities for Building 230 have been identifiedand marked.

Gamma Surveys

l. Establish a general area background, in accordance with HDP-PR-FSS-71 | Final Status Surveys andSampling of Soil and Sediment. Use this background level in conjunction with the Investigation ActionLevel (IAL) of 1,624 net counts per minute as a field guide to pause and, if necessary, flag locations inthe pipe removal trenches for possible biased sampling (see following Steps 2 and3 below for details).

2. Perform a gamma walkover within the pipe removal trenches (former restrooms, CushmanRoom) holding the probe as close to the surface as possible (nominally 1", but not to exceed3"), in accordance with HDP-PR-FSS-711.

a. Look and/or listen for elevated count rates and then pause to determine locations thatexhibit anomalous readings (e.g., count rates that exceed the IAL for this unit).

b. Mark the location(s) exhibiting anomalous readings to facilitate possible futureinvestigations (for example, use a flag, stake, or other marking resistant to


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HDP-PR-FSS-701, Final Status Survey Plan Development @evision 7)APPENDIX P-3

FSS PLAN

anticipated environmental conditions).

At each location where anomalous readings occur, perform a more detailed point survey of thearea. Pause and place the survey probe as close as possible to the surface to define and recordthe total count rate associated with the area of interest on the Field Log.

Document the l-minute static gamma count rates on contact with surface soil at each borehole locationprior to sample collection in accordance with HDP-PR-FSS-71 l.

a. Mark the location(s) exhibiting anomalous readings to facilitate possible futureinvestigations (for example, use a flag, stake, or other marking resistant to anticipatedenv ironmental conditions).

Soil Sampling

Collect soil samples in accordance with HDP-PR-FSS-71I at locations identified in Appendix P-4.

Collect a minimum of one duplicate sample for every 20 samples. A minimum of one duplicate sampleis required for each survey unit.

Care should be exercised to ensure the entire sample is included from within the depths specified forsampling. When collecting the composite samples, vegetation and native debris/rocks with a diametergreater than I inch should be discarded.

Submit samples for analysis to TestAmerica following sample chain of custody requirements containedin HDP-PR-QA-006.

Prepared by: Ellen C. Jakub(Print Name)

aJ.

4.

l.2.

a

4.

(olnl.,E

Peer Reviewed

Approved by(RSo):

by: Brian A. Miller(Print Name)

W. Clark Evers

(Date)

0/nts

(Signature)

(Print Name) (Signature)

Westinghouse Non-Proprietary Class 3

(Date)

Quality Record

Procedure: HDP-PR-FSS-701, Final Status Survey Plan DevelopmentHematiteDecommissioning

Proiect Appendix P-1, Page 1 of 10

APPENDIX P-lFINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

Survey Area: BSA 02 Description: Plant Soils Open Land Area

Survey Unit: 0l Description: Subsurface Soil beneath Building 230

1. Verify Survey Unit Isolation & Control

Survey Unit properly isolated and/or controlled (indicated by outlining the area with green rope and

posting the appropriate signage) as required by HDP-PR-HP-602, Data Packnge Development andIsolation and Control Measures to Support Final Status Survey? YesX Notr(lf 'No", discontinue survey design until area turnover requirements have been met.)

Note: I&C will be verified through ongoing routine surveillance while the building is occupied.

2. Evaluate Final Remedial Action Support Survey (RASS) Data

a. Number of RASS Samples: 23

b. Record analytical results and summary statistics for each RASS sample.

c. Are all RASS results less, or equal to the appropriate DCGL* from Appendix A of HDP-PR-FSS-701? YesX NoI

d. If 'No", have remaining locations of elevated concentration been evaluated? N/Af YesI NoI(If "No", discontinue survey design until investigation is complete.)

e. Have elevated areas identified by gamma walkover surveys been investigated? YesX Non(If "No", then terminate survey design and perform additional investigation and repeat the planning process.)

f. Are the Initial Characterization and RASS data sufficient to support FSS Design? YesX Non(If "No", terminate survey design, perform additional characterization or remediation and repeat the planning

process.) Note: Due to accessibility, only five subsurface soil RASS samples were taken.

Quality Record BSA 02-0r

v-234(pci/e)

u-235(pci/el

u-238

(pcile)Tc-99

tpci/s)

Th-232(pci/e)

Ra-225

(pci/e)

Minimum 0 (<BKG) 0 (<BKG) 0 (<BKG) 0 (<BKG) 0 (<BKG) o (<BKG)

Maximum 1.500 0.340 2.800 0.670 0.400 0.700

Mean 0.237 0.096 0.937 0.250 0.030 0.193

Median 0.130 0.100 0.730 0.21Q 0.000 0.020

Standard

Deviation0.37t 0.079 0.739 0.200 0.093 o.245

# of Samples 23 23 23 27 23 22

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HematiteDecommissioning

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APPENDIX P.lFINAL STATUS SURVEY SAMPLING PLAI\ DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

3. Define the Survey Unit Classification

Write a short description of the survey unit based on historical use and remedial activities:

The BSA 02-01 survey unit (SU) is classified as MARSSIM Class 2. BSA 02-01 is the subsurface soil locateddirectly below Building 230. Building23} was constructed in 1992 and used for uranium fuel rod bundling. Fuelpellets were brought into the building in stainless steel transfer boxes via the Cushman Room and sent into both theGadolinium Room and Rod Assembly Room via a conveyor system. The footprint of Building 230 has a surfacearea of 3642 m2. It is classified as a MARSSIM Class 2 survey unit due to the level of confrdence that areas ofelevated activity are not present.

Classification: 2 Survey Unit Area 1m27: 36+2

a. Has the Classification changed from the Initial Classification as indicated in DP Ch. 14 Table 14-16and Figures 14-14 through 14-17? YesX NoI(If o'Yes", then include a copy of Appendix P-5, Sumey Unit Classification Change Form.)

b. Is the Survey Unit area less than the maximum size for the Classification? YesX Nof](If "No", then terminate survey design and evaluate dividing the survey unit into multiple survey units.)

4. Define the Surrogate Evaluation Area (SEA)

Select the appropriate SEA as input to calculating scan sensitivity and variability in the RASS SOF.Plant Soils SEA X Tc-99 SEA n Burial pit SEA n

5. Define Final Survey Unit Conditions

X No Excavations, Paved/Partially Paved or Excavated but not Backfilled

! Excavated and to be Backfilled

I Excavated and Backfilled

Note: If a portion of a Survey Unit is paved, then Surface Soil Stratum begins at the bottom of the paved surface andextends 15 cm from that point below grade. The lower depth of the Root Stratum remains at 1.5 m belowgrade. The pavement is then ffeated as a separate structural Survey Unit within the Survey Area.

6. Define the Type of FSS Samples and Measurements

Select the appropriate types of samples and measurements for FSS of this Survey Unit that correspondsto the final condition and survey classification of the Survey Unit.

Not Excavated. Paved,/Partially Paved or Excavated Excavated and to be Backfilled:but not Backfilled:

X Surface Soil(<l5cm) Samples. ! Surface Soil Samples taken from any remaining surface

soil Stratum and Root Stratum Soil Samples taken at the

Quality Record BSA 02-01

Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development

Appendix P-1, Page 2 of 10Westinghouse Non-Proprietary Class 3 Revision: 7

Procedure: HDP-PR-FSS-701, Final Status Survey Plan DevelopmentHematiteDecommissioning

Project


SOL SURVEY UNITS

same locations as Surface Samples, composited over the

entire root stratum.

X Root Stratum Soil Samples composited from tr Root Stratum Soil Samples composited from exposed

l5cmto 1.5m. grade to 1.5m and Deep Stratum Soil Samples taken at

X Deep Stratum soil Samples of the top 15cm of the same locations as Root samples of the top l5cm of' the Deep Stratum.

the Deep Stratum.

Note: If the SOF of the Root Stratum sample n Deep Stratum Soil Samples of the top 15 cm of the

exceeds 0.5, a composite sample is collected exposed Deep Stratum.

from 1.5 meters to an appropriate depth

(Deep Stratum).

Excavated and Backfilled:

n Core through backfill layer to the lowest pointwhere remediation occurred and composite a

sample from a coring that extends one meter

deeper than the lowest point where remediation

occurred.

7. Define Derived Concentration Guideline Levels (DCGL)

Select the appropriate DCGL for each Radionuclide of Concern (ROC) based on the corresponding SEAand the Uniform Conceptual Site Model (CSM).o If Tc-99 wi$ measured during the characterization/RASS survey, then the "Measure Tc-99" DCGLs

will be used from Appendix A of HDP-PR-FSS-701.o If Tc-99 was not measured in the chaructenzation/RASS survey, then the modified U-235 DCGL

("Infer Tc-99") will be used from Appendix A HDP-PR-FSS-701.


Surface Stratum DCGL

{pci/g}

Root Stratum DCGL

{pci/g}

Deep Stratum DCGL'

{pci/e}

Uniform DCGI

(pcilsl

u-234 N/A N/A N/A L95.4

u-235 NiA N/A N/A 51.6

u-238 r{lA N/A N/A 168.8

Tc-99 N/A N/A N/A 25.1

Th-232 + C t\/A N/A N/A 2.0

Ra-225 + C N/A N/A N/A 1.9

1. The Deep Stratum DCGLs correspond to the Excavation Scenario DCGL from Appendix A of HDP-PR-FSS-701.

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Appendix P-1, Page 4 of 10


SOL SURVEY UNITS

8. Determine the Number of Samples in the Statistical Survey Population

Note: The statistical survey population is routinely derived based on the Uniform DCGL.o Alternatively, if the Survey Unit excavation extends into multiple CSMs (e.g. surface, root &

deep), then the DCGL(s) from the most limiting strata can be used with the equations below;OR

o If the excavation significantly extends into the Deep Stratum, then the alternate approachpresented in Section 8.2.5 of HDP-PR-FSS-701 may be used for determining the mean SOF

and weighted standard deviation that accounts for the reduced dose from the deeper surface,

i.e., by weighting the Root Stratum and Excavation DCGL.* values.

o The values used in the following equations (SOF'.- and osor) can be found in the tables fromStep 2b and Step 7.

a. Determine a mean SOF for the characterization/RASS survey data set using the equation fromSection 8.2.5a of HDP-PR-FSS-70 I .

Lower Bound of the Grey Region (LBGR) : SOFy.- = 0.13

b. Determine the weighted standard deviation in the SOF for the characterization/RASS survey data set

using the equation from Section 8.2.5b of HDP-PR-FSS-701.

Note: For the determination of SOFy.* and o5ep , include the concentration for Tc-99 if it was measured. If Tc-99

was not measured, include the modifiedU-235 DCGL and omit Tc-99 concentration term.

{ Larger of the two used in worksheet survey design

Survey Unit Oson : 0.13

Background oSoF= 0'14 X

c. Define the Decision Errors.

Type I Error : 0.05 Type II Error : 0.10

Note: The Type II Error is set at 0.10 initially but it may be adjusted with RSO conculrence.

d. Determine the Relative Shift using the equation in Section 8.2.5d of HDP-PR-FSS-701.

Relativeshift: 6.16* *spreadsheet value may differ slightly from hand-calculated

results due to roundins


n


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Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan DevelopmentDecommissioning

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APPENDIX P.lFINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

e. Is the Relative Shift between 1 and 3? YesE NoXo If "Yes", then continue to Step 8f.

o If "No", then adjust the LBGR as necessary to achieve a relative shift between 1 and 3. In order toaccomplish this, the LBGR may be set as low as the MDC for the analytical technique.

Adjusted LBGR: 0.58

Adjusted Relative Shift: 3.00

f. Determine the Number of Samples (N/2) required corresponding to the Type I error, Type II Errorand the Relative Shift from Appendix F of HDP-PR-FSS-701 or calculate using equation 5-1 fromMARSSIM.No. of Samples (N/2) = 8

9. Determine the Scan MDC for Total Uranium

. When U-235 is reported as negative or zero and U-238 is reported as positive, set the sample

enrichment to 0.7 2oh (natural uranium).

. When U-235 is reported as positive and U-238 is reported as negative or zero, set the sample

enrichment to l00o/o (highly enriched).

. When both U-235 and U-238 data are reported as positive, determine the U-2384J-235 ratio foreach sample and use Appendix G of HDP-PR-FSS-701, to determine the uranium enrichmentthat corresponds to the mean U-238:U-235 ratio.

a. Record the average Uranium enrichment for the survey unit using the enrichment determined foreach individual sample.

Average Enrichment (%): 2.2

Note: The Activity Fractions ( "f ) for each radionuclide corresponding to the mean enrichment used in the

following calculations is obtained from Appendix G of HDP-PR-FSS-701.

lf the Uniform DCGL is not used, and the excavation extends into multiple CSMs (e.g. surface, root &deep), then the most conservative DCGLs should be used in the following calculation.

b. Determine a DCGL* for Total Uranium using the equation from Section 8.2.6b of HDP-PR-FSS-70r.

DCGL*1o1rr for Total Uranium : 49.7 pCilg

c. Identify the Radiological Instrument that will be used for scanning.

X 2"x2" NaI Detector n FIDLER NaI Detector I other


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APPENDIX P.IFINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

d. Determine the Scan MDC for the selected instrument using the equation in Section 8.2.6d of HDP-PR-FSS-701 or the calculations presented in the Open Land Area Gamma Scan MDCs section inChapter 14 of the DP.

MDC."- for Total Uranium = 34.3 pCt/g

10. Determine the Scan MDC forTh-232 and Ra-226

a. Select the appropriate DCGL* for Th-232 andRa-226 corresponding to the soil strata that will be

exposed at the time of FSS and the SEA where the survey unit is located.

Th-23ZDCGL*:2.0 pCilg Ra-226 DCGL*: 1.9 pCi/g

Note: If the Uniform DCGL is not used, and the excavation extends into multiple CSMs (e.g. surface, root &deep), then the most conservative DCGL for the strata should be used. With RSO concurrence, the alternateapproach as presented in DP Ch. 14, Section 14.4.3.1.10 may be used in lieu of using the most conservative.

b. Determine the Scan MDC for the selected instrument

Note: HDP-TBD-FSS-002 documents the calculated MDC,.- of 0.75 pCi/g for Th-232 and 1.04 pCi/g for Ra-226when using a2" x2" NaI detector with a background of 10,000 cpm. If a different background is indicated,see Appendix C of HDP-TBD-FSS-002 for the appropriate MDC."-.

Note: If the selected instrument is not a 2"x 2" Nal detector, then the MDC."- can be determined in accordancewith the Open Land Area Gamma Scan MDCs section in DP Ch. 14.

MDC.""' forTh-232 :0.75 pCi/g MDC."un forRa-226:1.04 pCilg

Note: If a value is not applicable, mark as N/A.

11. Adjust the Statistical Sample Population Size (N/2) for Scan MDC

a. Is the Scan MDC for the selected instrument less than the DCGL* that was determined for TotalUranium? (compare values from Step 9b and 9d) YesX NoXClass 2 and 3 survey units - If "Yes", then proceed to Step 12, if 'No", then contact the RSO fordirection as to changing parameters for scanning such as scanning speed, detector distance, diff-erent

instrumentation, etc.

Class 1 survey units, proceed to the next step.

b. Divide the total area of the survey unit by the Number of Samples (t {/2) determined in Step 8f todetermine the area bounded by the statistical sample population.

Area Bounded by the Statistical Sample Population (Asu) : NA ^'T]RAIIIUM

c. Was the Scan MDC for the selected instrument less than the DCGL* that was determined for TotalUranium in Step 11.a?

(If "Yes", then proceed to Step 12, if "No", then proceed to the next step).

N/AX Yestr NoI




APPENDIX P-IFINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

d. Using the Area Factors in Appendix H of HDP-PR-FSS-701 and using the equation from Section8.2.8d of HDP-PR-FSS-701, determine a Total Uranium AF for each listed area using the ActivityFractions (fl for each radionuclide that corresponds to the mean enrichment from Appendix G ofHDP-PR-FSS-701.

Note: The AFs for the Uniform Stratum will generally be used. The RSO may approve use of AFs from the

Surface, Root or Deep CSMs, or the Excavation Scenario.

e. Find the Area Factor (AF16a1u) determined in the previous step that corresponds to the area boundedby the statistical sample population (Asu).

AFrotu for the Bounded Area (Asu) : NA

f. Multiply the DCGL* determined for Total Uranium by the Area Factor (AFrntr') to derive a

DCGLEyc for Total Uranium.

DCGLsr,ac for Total Uranium = NA pCilg

g. Is the MDCr.a', for the selected instrument less than the DCGLgrac that was determined for TotalUranium? NAX YesI NoI(If "Yes", then proceed to Step 12, if "No", then proceed to the next step.)

h. Determine a new AF (AFerr,1c) corresponding to the MDCrr- for the selected instrument by dividingthe MDC,.* by the DCGLw.

AFrvc for U1os1 : NA

i. Find the Area (A') that corresponds to the Area Factor (AFEr'ac).

A' for U1o1u1 = NA

j. Determine an Adjusted Number of Samples (Nrr'.ac) for the statistical sample population size thatcorresponds to the bounded Apvcusing the equation from Section 8.2.8j of HDP-PR-FSS-701.

NsMg corr€sponding to A' for U16121 : NA

N corresponding to A' for potential Tc-99 hotspots : NA

12. Determine the Grid Spacing

a. Larger of N/2 from Step 8f, the maximum value of Nrrrac from Step 1lj, or N corresponding to A'for potential Tc-99 hotspots from Step 1lj.

(N6Ms[max], N corresponding to the potential Tc-99 hotspot or N/2) = 3

b. Is the Survey Unit a Class 3 Survey Unit? Yesf NoX


Rrea (mz) 153375 10000 3000 1000 300 100 30 10 3 1

AFro,"tu NA NA NA NA NA NA NA NA NA NA


Project Westinghouse Non-Proprietary Class 3 Revision: 7




Proiect


SOIL SURVEY UNITS

(lf "Yes", then continue to Step 13, if 'No", then proceed to the next step).

c. Determine Grid Spacing (L) using the equation from Section 8.2.9 of HDP-PR-FSS-701.

Grid Spacing (L) for Survey Unit: 22.9 m

13. Generate a Survey Map

a. Assign a unique identification number to each sample in the statistical sample population using theguidance and direction provided in Appendix M of HDP-PR-FSS-701.

b. Generate a graphic representation of the Survey Unit with dimensions and boundaries conespondingto the established reference coordinate system in accordance with Section 8.2.10 of HDP-PR-FSS-70r.

c. Using the reference coordinate system, ascertain coordinates for each sample location.

d. Designate sample locations, and location coordinates on Appendix P-4, FSS Sample & MeasurementLocations & Coordinates and attach a copy of that form to the FSSP.

e. Attach a copy of the developed Survey Map with sample locations to the FSSP.

f4. QC & Biased Samples

a. Randomly choose 5o/o of the statistical sample population as QC samples in accordance with HDP-PR-FSS-703, Final Status Survey Quality Control.

b. Designate QC sample locations, and location coordinates on attached Appendix P-4, FSS Sample &Measurement Locations & Coordinates.

c. Designate if any biased samples will be taken at the discretion of the HP Staff designing the surveyand the basis for taking them. Necessary biased samples will be explained on Appendix P-3, FSS

Sampling Plan.

d. Using the reference coordinate system, determine coordinates for each biased sample location.

e. Designate biased sample locations, and location coordinates on attached Appendix P-4, F,SS Sample

& Measurement Locations & Coordinates.

15. Scan Coverage

a. The Survev Unit is: IClassl XClass2 EClass3

b. Based on the Survey Unit Classification, the scan coverage in this Survey Unit is;

X l00o Scan Coverage ofexposed soil inpiping trenches. n _Nn_X Scan Coverage of exposed soil


Westinghouse Non-Proprietary Class 3 Revision: 7


Proiect


SOIL SURVEY UNITS

c. Designate any specific scan locations as determined necessary, on Appendix P-3, F,S,S SamplingPlan.

16. Investigation Levels

a. The Survey Unit is: I Class 3

1) Scan Investigation Levels are set at: NA cpm

Sample Investigation Levels are set at 50Yo of the DCGL* when expressed as the SOF.

b. The Survey Unit is: X Class 2

2) Scan Investigation Levels are set at: 7,624 net cpm

Sample Investigation Levels are set at the DCGL* when expressed as the SOF.

c. The Survey Unit is: n Class t

3) Scan Investigation Levels are set at: NA cpm

Sample Investigation Levels are set at the DCGL* when expressed as the SOF.

17. Attachments

Attach a copy of completed forms as appropriate:

I Appendix P-3, FSS Survey Sampling Plan,

I Appendix P-4, FSS Sampte & Measurement Locations & Coordinates

I appendix P-5, FSS lJnit Classification Change Form

I Appendix P-6, FSS Field Log

I Survey Unit Figure

fl other:



Appendix P-1, Page 9 of 10Westinghouse Non-Proprietary Class 3 Revision: 7


Project


Westinghouse Non-Proprietary Class 3 Revision: 7 Appendix P-1, Page 10 of 10

APPENDIX P.lFINAL STATUS SURVEY SAMPLING PLAIT DEVELOPMENT CHECKLIST FOR

SOIL SURVEY UNITS

18. FSSP Development Checklist Approval

Prepared by: Ellen C. Jakub U^,ltlfuG,aa^r*J@

lorJ

Peer Reviewed by:

Approved by (RSO):

(Print Name)

Brian A. Miller(Print Name)

W. Clark Evers 8/h//5(Print Name) (Signature)



Project


Westinghouse Non-Proprietary Class 3 I Revision: 7 | Appendix P-5, Page 1 of I

APPENDIX P.5FSS SURVEY UNIT CLASSIFICATION CHANGE FORM

SurveyArea:

Survey Unit:

No.

No.

BSA 02 Description: Plant Soil Area, Open Land Area

01 Description: Subsurface Soil beneath Buildins 230

Initial Classification per DP Ch. 14:

Classl f] Class2 f, Class3 X Non-Impacted f]New Classification:

Class 1 I Class 2 X Class 3 f] Date of Change: 05-08 -2015

Describe the proposed change and the reason for the change: BSA 02-01 was initially classified asMARSSIM Class 3 in most of the Decommissioning Plan drawings and tables, however one figure indicateda Class 2 designation. Therefore the more conservative designation of Class 2 will be implemented.

Prepared by: Ellen C. Jakub 6-22-2015(Print Name) (Date)

Approved by (RSO): 0/h/ls(Signature)

Quality Record

R230 Subsurface Sample LocationBSA 02-0 1

Sample lD

Start

Depth( Inches

End

Oepth(inches

X

Coordrnates

{ feet iCoordrna!es

{feet)802-01-01-p-s.s-00 0 6 43.3 141.0

BO2-01-02-P-R-S-00 6 59 43.3 141..0

802-01-03-p-E-5-00 59 65 43.3 l.ll.0802-01-O4-p-S-S-00 0 6 118.4 141.0

802"01 -05- p-R"S-00 6 59 118.4 141.0

s02-0r-06-p- E-5-00 59 65 118.4 141.0

802-0r-07-p- 5- s-00 6 193.6 141.0

802-01-08- p-R-S-00 6 59 r93.6 141.0

BO2-01-09- p- E-5-00 59 65 193.6 141.0

802-01- l0-p-s-s-00 0 5.7 76.0

BO2-01-11- p-R-S-00 6 59 5.7 76.0

802 0t 12-p.E,s-00 59 65 q7 76.0

802-01- 13- p-S-S-00 0 6 80.9 76.0

802-01-14.p.R-S-00 6 59 80.9 76.0

802-01-15-p-E-S-00 59 65 80.9 76.4

802-01.16.p.s.s.00 0 o 156.0 76.0

802-01-17-p-R-S-00 6 59 156.0 76.O

802.01.18.p-t-s.00 59 65 156.0 76.O

802-01- 19-P-S-S-00 0 6 43.3 11.0

802-01.20.p.R.s-00 6 59 4 3.3 ll^0802-01-21-p- E-S-m 59 65 43.3 11.0

802.01.?2'p-s-5-00 0 118.n 11.0

so2-01-23, p-R,s-00 6 59 118.4 11.0

802-01-24-P-E-5-00 59 65 118.4 1t.0802-01-02- p- R-Q-00 19 43.3 141.0

802-0 1-10-P-S-Q-00 0 D 5.7 76.0

802-0 I -0 I -P-S-S-00802-01-02-P-R-S-00802-01-03-P-E-S-00802-01-02-P-R-Q-00

802-0 I -04-P-S-S-00802-01-05-P-R-S-00802-01-06-P-E-S-00

802-01-07-P-s-s-00802-01-08-P802-01-09-P-

r) a) .)

802-0 I - I 0-P-S-S-00802-0 I - I l -P-R-S-00 802-0 I - I 3-P-S-S-00802-0 r - r 2-P-E-S-00 802-0 I - I 4-p-R-S-00802-0 I - I 0-P-S-Q-00 802-0 I - I 5-p-E-S-00

802-0 I - r 6-P-S-S-00802-01- 17-P-R-S-00B02-0 I - l 8-P-E-S-00

a)

802-0 I - I 9-P-S-S-00 802-0 l -22-p-S-S-00

N B02-01-20-p-R-s-00 802-01-23-p-R-s-00802-01-21-P-E-S-00 ,/2 802-01-24-P-E-S-00

4r^\,/cl+E \-/ V| | Exposed Subsurface Soil (129 m2)

DecommissioningProcedure: HDP-PR-FSS-701. Final Status Survev Plan

Westinghouse Non-Proprietary Class 3 Appendix P-4, Page I of I

Fss sAMpLE o t"^.*$in*""$o$lltron, & cooRDrNArESSurvey Area:Survey Unit:Survey Type:

BSA 02 Description:Description:Classification:

Plant Open Land Area01 Subsurface Soil Below Blds 230

FSS Class 2

ples highlightcd in lcd will be collectccl ancl arcl.rired: racliological ualrses perlbrnrccl onlr il-overlying root sanrple has a SOIr >0.5.

X and Y coordinates originate from southwest comer offloor surface (Bldg 230 footprint).urface: Floor: F; Wall = W; Ceiling = g Roof = R

Three-layer (Surface-Root-Excavation) with conservative use ofUniform DCGLs

',pe: Systematic = S, Biased = B; QC =Q; Investigation = |

Record

B02-01-01-P-s-s-00802-01-02-P-R-S-00B02-0 t -03-P-u-s-00 E,xcal ation 6-inch802-01-04-P-s-s,00802-01-05-P-R-S-00

Ercavation802-01-06-t,-t--s-00 Ilxcavation 6-inch

802-01-08-P-R-S-00

[:rcal ation 6-inchl:xcavatiortB02-01-09-P-1.1-S-00

B02-0r-r0-P-s-s-00B02-01-l l-P-R-s-00

lrxcavation 6-inchB02-0l-l2-P-E-S-00802-01-13-P-s-s-00802-01-14-P-R-S-00

Bxcavation 6-inchllxcar,'ation802-01-15-P-E-S-00

802-0 | - I 6-P-S-S-00

B02-01 - l 7-P-R-S-00lixcal ationB02-0 t- |8-P-lt-s-00 I}cavation 6-inch

B02-0 | - l 9-P-S-S-00

802-0t-20-P-R-S-00Ilxcavation 6-inch802-0t-2I-P-B-S-00 Ercavation

B02-0 l -22-P-S-S-00

802-01-23-P-R-S-00Excavation802-0 l -24-P-S-S-00 Excavation 6-inch

802-0r-10-P-s-Q-00

hematite decommissioning project - procedure hdp-pr-fss ... · survey area: survey unit: overview:...

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