ML18010A274

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Final Status Survey Final Report Volume 3, Chapter 6, Survey Area Release Record for Land Survey Area 10, Survey Unit 6, Appendix P-1
ML18010A274
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Site: 07000036
Issue date: 11/25/2013
From: Bresnahan M
Westinghouse
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Westinghouse Proprietary Class 3

@ 2013 Westinghouse Elecbic Company LLC. All Rights Reserved.

Westinghouse Hematite Decommissioning Proj ect NUMBER:

TITLE:

HDP-INST-FSS-LSA1 0.06 Final Status Survey Plan and Instructions for Survey Area & Unit: LSA 10-06 1

November 25,2013 REVISION:

EFFECTIVE DATE:

Approvals:

Author:

Owner:

Michelle E. Bresnahan Joseph S. Guido

Revision: 2 Page P-l of lO HDP-PR-FSS-7O1, Flnll Status Surrey Plan Devclopment APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS SurveyAnea: LSA-10 Descripdon: BwialPitsOpentarxlArea Survey Unlt: 6 Descr{pdon: Section6

1. Verlfy Surwey Unit Isoladon & Control
a. Survey Unit properly isolated and/or controlled (indicared by outlining the area with green rope and postingthe appropriate signage) as required by HDP-PR-HP-6O2, Data Paclcage Development and Isolation and ControlMeasures to Support Final Stotus Survey?

YesF*l NoI (If 'tlo", discontinu survy de"ig, rmtil area turrovf, rquiremNrts have been met)

2. Evaluate Flnal Remedlal Acllon Support Survey (RASS) Ilatl
a. NumberofRASS Samples: 8
b. Record analytical results and summary statistics for each RASS sample
c. Are all RASS results less, or equal to the appropriare DCGLw?

Yes[ N"ltr]

d. If "No", have remaining locations of elevated concentration been evaluated? N/AFJ Yesfl NoT-l (If 'No", discontinu survey desigl rurtil irwestigation is complete.)
e. Have elevated areas identified by gamma walkover surveys been investi galed?

Yesfl NoE (If 'T.{o", then terminate Euvey design and perform additional in'vestigation and repeat the planning p,rocess)

f.

Are the Initial Characterization and RASS data suffrcient to sup'port FSS Design? Yesfl NoD (If 'No-, tcrminatc rurvey design, perform additiotral draracterization or rc,lnediation and repeat the plamring proceea.)

3. Deflne the Suney Unlt Classlflcadqr Write a short descripion of the suryey rmit based on historical use and remedial activities:

LSA-10-06 is a sectbn ofthe sotfh burial pit that contairpd both docunented (between 1965 and 1970) ard urdoctnrenied (pre-I 965) burlal pib.

Classificdion: I Suruey Unit Area (m2): 950

a. Has the Classification changed from the Initial Classificdion as indicaed in DP Ch. 14? Yesfl NoE (f 'Yes", then include a copy of Appendix P-5, Survey Unit Classfrcation Chorye Fum.)

Quality Record Westinghouse Non-Proprierry Class 3 v-234 (oCile) u-235 (pCi/e) u-238 (oCiJq-),

Tc-99 (oCi/pl T}J'-232 (oCi/s)

Ra.226 (oCile)

Minimum 2.52E+00 1.318-01 1.25E+00 NR 5.008-02 8.708-02 Maximum 8.70E+00 4.688-01 3.81-E+00 NR 3.40E-01 3.808-01 Mearr

4. 048+00 2.L7E-0'J.

l-.838+00 NR 2.20E-01.

2.778-O\\

Median 3.10E+00 l-.578-01 1.51-E+00 NR 2.258-Ot 2.858-01 Standard Devidion 2.15E+00 l.l_7E-01 8.148-01 NR 9.5LF'-02 9.158-02

Revision: 2 Page P-2 of lO HDP-PR-FSS-7O1, Flnal Status Surrey Plan Development APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS

b. Is the Survey Unit area less than the maximum size forthe Classification?

YesFl No[tr]

(If 'No", then terminate suwey design and evaluate dividing the suwey unit into multiple suwey units.)

4. Dellne tlre Surrogate Evaluation Anea (SEA)
a. Select the appropride SEA as inputto calculating scan se,nsitivity and variability in the RASS SOF.

Plant Soils sEAf-Tc-99 SEA T-Burial Pit sEA Fl

5. Deline Final Susef, Unit Condidons E No Excavations, Paved/Partially Paved or Excavated but not Backfrlled lFl Excavated and to be Backfrlled l[ Excavated and Backfrlled Note : If a portion of a Survey Unit is paved, then Surface Soil strala begins at the bottom ofthe paved surface and extends 15 cm from that point below grude. The lower deph offhe Root Strata remains at 1.5 m below gade. The pavement is then treated as a separde stnrctrrral Survey Unit within the Survey Area
6. Define tlre T5rpe of FSS Samples and Measunements
a. Select the appropriate types of samples and measureme,nts fo FSS of this Survey Unit that corresponds to the final condition and survey classification ofthe Survey Unit.

Not Excavated. Paved/Partiallv Paved or Excavded and to be Backfilled:

Excavated but not Bacldrlled:

[F Surface Soil (<15cm) Samples.

f Surface Soil Samples taken from any remaining surface soil strda and Root Strata Soil Samples 1,1 taken d the same locations as Surface Samples,

  • r\\nn' composited over the entire root strata.

lF Root Strara Soil Samples composited from,tt' gl Root Strda Soil Samples composited from exposed l5cmto 1.5m.

grade to 1.5m and Deep Strata Soil Samples taken at the same locations as Root Samples of the top l5cm ofthe deep strata Note: If the SOF ofthe Root Strata sample E] O""p Strda Soil Samples of the top 15 cm ofthe exceeds 0.5, a composite sample is collect exposed Deep Strata.

from 1.5 meters to an appropriate depth (deep stratum)

Excavated and Backfrlled Scan Measurements:

Core through backfill layer to the lowest V l00plo Scan Coverage of Exposed Soil.

point where remedidion occurred and composite a sample from a coringthat lfl Scan Coverage of Exposed Soil.

extends one metr deeper than the lowest point where remedidion occurred.

lfl Ofirer itv Record Westinghouse Non-Propriettry Class 3

Revision: 2 Page P-3 of l0 HDP-PR-FSS-701, Flnet Status Surrey Plan Development APPENDD( P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SUR\\rEY UNITS

7. Deflne Dertved Curcentration Guidellne Levels GrcGL)
t.

Select the appropriate DCGL for each Radionuclide of Concern (ROC) based on the corresponding SEA and the Uniform Conceptual Site Model (CSM).

o If Tc-99 was measured during the characterization/RASS survey, then the "Measure Tc-99" DCGI-S will be used from Appendix A of HDP-PR-FSS-701.

o If Tc-99 was not measured in the characterization/RASS survey, then the modified U-235 DCGL

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

Deep correspond NOTE: The Uniform DCGL will be used to calculated the number of samples in the statistical survey population.

8. Crlculat the Number of Samples ln the Stadsdcal Surwey Population NOTE: The Stdistical Survey Population is routinely derived based on the Uniform DCGL.

o Alternatively, ifthe Survey Unit excavation extends into multiple CSMs (e.g. surface, root &

deep) then the DCGt{s) from the most limiting strata can be used with the equations below; OR o Ifthe excavation significantly extends into the deep strata, then the altemate approach presented in sestion 8.2.5 of HDP-PR-FSS-701 may be used for determining the mean SOF and weiglrted standard deviation that accoturts for the reduced dose from the deeper surface, i.e., by weighting the Root stratum and Excavation DCGL,*, values.

e The values used in the following equations (SOFmc$ and ossp) can be found in the tables from Section 2b and Section 7a.

a. Calculde a mean SOF for the cbnac.tnt'uatior/RAss survey dda set.

qalF - conc,r-r.

  • conoo-rr,
  • c*o,r-,,,
  • contot"-*
  • cono*-o,
  • conco-ro

-'\\-'rxa : DCGL"*, - DCGL"-'* - DCGL"-., - DcGLr"-,

DCGLft-232 DCGLR.-226 Lower Bound ofthe Grey Region (LBGR) : SOFucm :0,32

b. Calculde the mean and standard deviatim in the SOF for the charrclenzdion/RASS survey data set.

NOTE: Forthe calculation of SOFl,rc'r and osor, include the concentration for Tc-99 if it was measured. If Tc-99 was not measured-include the modified V-235 DCGL and omit Tc-99 conce,ntrdion term.

a,uatity Record Westinghouse Non-Pro,prietary Class 3 Surface Strata (oCi/o)

Root Strata (oCtlp\\

Deep Strata' (oCi/o\\

Uniform (oCi/e) u-234 508.5 235.6 872.4 195.4 u-235 204 7

14.5 5.8 u-238

)97 6 r83 3 551.1 168.8 Tc-99 l5l 30.1 74 25.1 Th-232+ C 47 2

5.2 2

R:a-226 +C 5

2.1 5.4 1.9 The Deen Strats DCGI-s corresoond to the Excevetion Scensrio DCGL from Aooendix A of Hl)P-PR-FSS-7O

Revision: 2 Page P-4 of l0 HDP-PR-FSS-7O1, tr'hal Strhs Suney Plan Development APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS r'Used in worksheet sunuy design Survey Unit os6p :

0.07 n

Background osor':

0.13 l? l

c. Define the Decision Errors.

Tlpe I Error : 0.05 Type II Error : 0.10 NOTE: The TSrpe II Error is set at 0.10 initially but it may be adjusted with RSO concurrence.

d. Calculde the Relative Shift.

Relative956= I-LBGR

@sor Relative Shift:

5.06

e. Is the Relative Shift between I and 3?

Yes[F NoFT o If 'Yes", then continue to step 10f.

o If 'T.[o", then adjust the LBGR as necessary to achieve a relative shift between I and 3. In order to accomplish this, the LBGR may be set as low as the MDC forthe analytical technique.

Adjusted LBGR: 0.61 Adjusted Relative Shift:

3.00

f.

Determine the Number of Samples (N for the Sign test or N/2 for the WRS test) required corresponding to ttre Tlpe I error, T5pe II Error and the Relative Shift.

o If the Sign Test has been chosen as the statistical test, then use Appendix E of HDP-PR-FSS-701 to determine N.

o If the WRS Test has been chosen as the statistical test then use Appendix F of HDP-PR-FSS-701 to determine N/2.

No. of Samples (N orN/2):

8

9. Calculat Ore Scan MDC for Total Uranium o When U-235 is reported as negative or zero and U-238 is reported as positive, set the sample enrichment to O.lLo/o (ndural uranium).

o When V-235 is reported as positive and U-238 is reported as negative or zero, set the sample enrichment to lo0P/o (highly emiched).Note: When both U-235 and U-238 dd.a are reported as positive, calculate the U-238/U-235 ratio for each 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. Calculde and record the average Uranium enrichment forthe suney unit using the enrichment calculated for each individual sample.

Average Enrichment (7o) l'85 NOTE: The Activity Fractions (,f ) for each radionuclide that coresponds to the mean enrichment in the following calculatio'ns is obtained from Appendix G of HDP-PR-FSS-701.

If the Uniform DCGL is not used, and the excavdion extends irflo muhiple CSMs (e.g. surface, Quality Record Westinpilrouse Nur-Proprietary Class 3

Revision: 2 Page P-5 of l0 HDP-PR-FSS-701, Final Status Surwey Plan Development APPENDTX P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS root & deep), then the most conservative DCGLs should be used in the following calculation.

b. Calculate a DCGL.* for Total Uranium DCGL_^, =

I

,fu-r-

.fu-rr,

.fu-rr" DCGLu_2y DCGLT_235 DCGLu_23s DCGL*,rotu for Total Uranium :

88.5 pCi/g

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

F-2"x2" NaI Detector r FIDLER NaI Detector [-

Other

d. Calculate the Scan MDC for the selected instnrment NOTE: 2x2 Sodium Iodide (with surveyor effrciency factor of 0.5 and a background count rate of 10,000 cpm).

If the instrument is not a2"x 2" NaI detector, or if the background count rate exceeds IO,O0O cpm, the MDC..', can be determined in accordance with DP Ch. 14, section 14.4.4.2.9 (Reference 5.1) of HDP-PR-FSS-701.

,ScanMDC:

.fu-*

fu-r, fu-u"

+-f 7383pci I g 4.9pCi I g 62.8pci / g MDCscNr for Total Uranium :

81.9 pCi/g

10. Calculate the Scan MDC for Th-232 and Ra-226
a. Select the appropriate DCGI
  • for T\\-232 and Ra-226 corresponding to the soil strda thd will be exposed at the time of FSS and the SEA where the survey unit is located.

th-232DCG14,: 2 pCi/g Rz-226DCGt*: l'g pcr/e NOTE: If the Uniform DCGL is not use4 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 alternate approach as presented in DP Ch. 14, section 14.4.3.L.IO (Reference 5.1) of HDP-PR-FSS-701 may be used in lieu of using the most conservative.

b. Identifythe Radiological Instrument that will be used for scanning.

F 2ux2-NaI Detector IT FIDLERNaI Detector E_ Other

c. Calculde the Scan MDC forthe selected instrument Note: Table 6.4 of NUREG-1507 (Reference 5.8) of HDP-PR-FSS-7OI has calculded an MDC.',, of 1.8 pCi/g for Th-232 and 2.8 pCi/g for R:a-226 when using a2"x2" NaI detector.

Note: If the selected instrumerrt is not a 2"x2" NaI detector, then the MDCscn can be determined in accordancewithDPCh. 14,sestionL4.4.4.2.9 (Reference5.1)ofHDP-PR-FSS-701.

MDC.",, forT\\-232 :

1.8 pCt/g MDCscer forRa-226: 2.8 pCi/g NOTE: If a value is not applicable, mark as N/A.

Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Page P-6 of 10 HDP-PR-FSS-701, Fhat Strtus Surwey Plan Development APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS

11. AdJust Ore Stadsdcal Sample Populetlon Slze (N or N/2) for Scan MDC
a. If ttre survey unit is either Class 2 or 3, then proceed to step 12.
b. Divide the total area of the survey unit by the Number of Samples (N or N/2) calculaled in step 8f to calculale the area bounded by the statistical sample population.

Area Bounded by the Statistical Sample Populatio'n (A*) :

118.8 m'

URANIUM

c. [s the Scan MDC for the selected instnrment less than the DCGL* that was calculated for Total Uranium? (compare values from step 9b and 9d)

Yolq Nol (Ifyes proceedto step llk)

d. Usingthe Area Factors in Appendix H of HDP-PR-FSS-701, calculate a Total Uranium AF for each listed area trsingthe Activity Fractions @for each radionuclide that corresponds to the mean enrichment from Appendix G of HDP-PR-FSS-701.

DccL.-, r(

fu'n

  • fu--

6'-

I lAFu.ux DCGIr,s.a AFn.-x DCG\\.v.^ AFv.ax DCGLr,u.u)

NOTE: The AFs for the Uniform strata will generally be used. The RSO may approve use of AFs from the Surface, Root or Deep CSMs, orthe Excavdion Scenario.

e. Find the Area Factor (AFrot ru) calculatpd in the previous step that corresponds to the area bounded by the Stdistical Sample Population (A* ).

AF1e1g for the Bounded Area (A- ) :

NA

f.

Multiplythe DCGL-calculated for Total Uranium bythe Area Factor (AF1as)to derive a [)CGIouc for Total Uranium.

DCGI*uc for Total Uranium :

NA PCi/e

g. Is the MDCec.n for the selected instrument less than the DCGr m,rc that was calculaled for Total Uranium?

NArjJ yesl_J Nofl (If o'Yes" then proceed to step 11k.)

h. Calculde a new AF (AFBuc) corresponding to the MDCsc",, for the selected instnrment by dividing the MDCsn bythe DCGLw.

AFuuc for Utotal :

NA

i.

Find the Area (A') thd corresponds to the Area Factor (AFBrac).

A'forUtotal :

NA Record Westinehouse Non-Proorietarv Class 3 Area (m")

t53375 10000 3000 1000 300 r00 30 l0 J

I AFlot'trJ NA NA NA NA NA NA NA NA NA NA

Revision: 2 Page P-7 of l0 HDP-PR-FSS-701, Flnal Status Survey Plan Development APPENDIX P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS

j.

Calculate an Adjusted Number of Samples (Neuc) for the Statistical Sample Population size that corresponds to the bounded Arrr,rc.

rt Art r.rnrc =_fi Nsuscorrespondingto A' for Utotal :

NA THORIUM-232

k. Is the MDCs"- for T"h-23zless than the DCGLw ?

Yesl9 No,L (If "Yes" the,n proceed to step l lr)

l.

Find the Area Factor (AF) in Appendix H that corresponds to the area bounded by the Statistical Sample Population (A5n).

AFnr-zrz forthe Bounded Area 14*'; :

NA

m. Multiply the DCGI* for Th-232 by the Area Factor (AF) to derive a DCGLar,rc for llt-232 DCGLnrc forTh-232 : NA pcr/e
n. Is the MDC'.- for Th-232less than the DCGLBy6 that was calculatedfor T\\-232?

NAIL Yes! N",L (If "Yes" then proceed to step l1r)

o. Calculate a new AF (AFEMq) corresponding to the MDC""* forthe selected instnrment by dividing the MDCscen bythe DCGL-./.

AFpr,,rc forTh-232 :

NA

p. Find the Area (A') that corresponds to the Area Factor (AFBuc).

A' for th-232:

NA NOTE: The Area Factors forT\\-232 can be found in Appendix H of HDP-PR-FSS-701.

q. Calculate an Adjusted Number of Samples (Neuc) for the Statistical Sample Population size that corresponds to the bounded Aeuc.

N

A*

'-E\\rc A' Nrvs correspondingto A' fOr 1\\-232 :

NA RADIUM-226

r.

Is the MDC5"- for Ra-226less than the DCGLg, ?

Yesfl NoYJ (If "Yes" then proceed to step 12)

s. Find the Area Factor (AF) in Appendix H that corresponds to the area bounded by the Statistical Sample Population (A*).

AFxl-225 for the Bounded Area (A*) :

3.91 Quality Record Westinshouse Non-Proorietarv Class 3

Revision: 2 Page P-8 of 10 HDP-PR-FSS-701, Final Shhrs Suruey Plan Development APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS

t.

Multiplythe DCGL", for Fta-226 by the Area Factor (AF) to derive a DCGI+uc forRa-226 DCGLeuc forPra-226 :

7.44

u. Is the MDC'.- for P..a-226less than the DCGLel,,rc that was calculated for Ria-226?

NAIF Yes[F No[F (If "Yes" then proceed to step 12)

v. Calculate a new AF (AFeuc) corresponding to the MDCsce'r for the selected instrument by dividing the MDC$en bythe DCGL{'

AFsr,{6 for-Ra-226 --

NA

w. Find the Area (A') that corresponds to the Area Factor (AFsrrac).

A'for Ra-226 :

NA

x. Calculate an Adjusted Number of Samples (NeMc) for the Statistical Sample Population size that corresponds to the bounded Apuc.

ar A",,

rrruc:_If Nuwc corresponding to A' for Fta-226 :

NA

12. Calculate the Grid Spadng
a. Larger of N from step 8f and the maximum value ofNsMq from 1lj, llq or I 1x.

(NBuc[max] or N) :

8

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

(If "Yes", then continue to step 13)

c. Calculate Grid Spacing (L).

Yes[F No[F

@ tr*,rtarGrid L=

[f squarecria L-Grid Spacing (L) for Survey Unit:

ll.7l

13. Generate a Suvey Map
a. Assign a unique identification numberto each sample in the Statistical Sample Population usingthe guidance and direction provided in Appendix M of HDP-PR-FSS-701.
b. Generate a graphic representation ofthe Survey Unit with dimensions and boundaries corresponding to the established reference coordinate system in accordance with step 8.2. 10 of HDP.PR-FSS-70I.
c. Using the reference coordinate system, ascertain coordinates for each sample location.
d. Designate sample locations, and location coordinates on Appendix P-4, FSS Sampl.e & Measurement l,ocations & Coordinates and attach a copy of that form to this FSSP.
e. Altach a copy ofthe developed Survey Map with sample locations to this FSSP.
14. QC & Biased Samples
a. Randomly choose 5%o of the Stdistical Sample Population as QC Samples in accordance with Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Page P-9 of l0 HDP-PR-FSS-701, Flinal Status Surrey Plan Development APPENDIX P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS HDP-PR-FSS-703, Final Status Survey Quality Control (Reference 5.9) of HDP-PR-FSS-701.

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 survey designer and the basis for takingthem. Necessary biased samples will be explained on Appendix P-3, FSS Sample Instructions.
d. Usingthe reference coordinate system, determine coordinates for each biased sample location.
e. Designate biased sample locations, and localion coordinates on attached Appendix P-4, FSS Sampl.e &

Measurement Locations & Coordinates.

15. Scan Coverage
a. The Survey Unit is:

17 Class 1 l-- Class 2 f

Class 3

b. Based on the Survey Unit Classification, the scan coverage in this Survey Unit is; ll7 l00olo Scan Coverage of exposed soil F

-%o Scan Coverage of exposed soil

c. Designate any specific scan locations as determined necessary, on Appendix P-3, FSS Sample Instructions and attach a copy of that form to this FSSP.

16Invesdgatiur Levels

a. The Survey Unit is: l-- Class 3
1) Scan Investigation [rvels are set at:

NA cpm Sample Investigaiion lrvels are set al 5oo/o of the DCGIry when expressed as the SOF.

b. The Strney Unit is: lf Chss Z
2) Scan Investigation I-evels are set at:

NA cpm Sample Investigation Levels are set at the DCG[,g, when expressed as the SOF.

c. The Survey Unit is: 17 Class I
3) Scan Investigation kvels are set at:

5395 cpm Sample Investigation hvels are set atthe DCGL' when expressed as the SOF.

17. Suney Instmctions and Sample Measurrment Locatiurs and Coordinates FSSP Approval Attach a copy of completed forms as appropriate:

tr Appendix P-3, FSS Survey Sample Instructions, tr Appendix P-4, FSS Sample Measurement Locations & Coordinates tr Appendix P-5, FSS Unit Cl.assification Change Form F eppendix P-6, FSS FieldLog l7 Survey Unit Figtre l-- other:

Qudity Record Westinghouse Non-Propdetny Class 3

Revision: 2 Page P-10 of l0 HDP-PR-FSS-701, Final Status Surwey Plan Development APPENDD( P-l FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS 1& FSSP Approval Prepared by :

Peer Reviewed by :

Approved by (RSO):

lI), ct"eltc 3.2 s r.ai^q,'t-flofr'plfl,^

l(- ta-l3 Quality Record Westinghouse Non-Class 3

Revision: 2 Page P-l of5 HDP-PR-FSS-701, Final Status Suney Plan Development

==

Description:==

APPENDD( P-3 F'SS SAMPLE INSTRUCTIONS Burial Pits Open Land Area

==

Description:==

Section 6 REVISION l: ll/25/2013 The LSA-10-06 survey unit is classified as MARSSIM Class l. LSA-10-06 is located in the southern half of the Burial Pit Open Land Area. The area that comprises the footprint of LSA-10-06 was used to bury radioactive and chemical wastes during the operational lifetime of the Hematite Fuel Fabrication Facility. Documented burial pits, under the governance of the Atomic Energy Commission's regulations, were generated between 1965 and 1970. Also, undocumented waste burials were thought to have occurred pre-1965. A small pit ("VOC Pit") that covers a portion of the footprint of LSA-I0-06, labeled LSA 09, was Final Status Surveyed (FSS) and backfilled prior to conducting FSS of LSA-10-06.

This pit was excavated due to chemical (VOC) contamination.

There were no radiological reasons for the excavation of LSA-10-09. It was necessary to perform FSS and backfill LSA-10-09 to prevent ground water infiltration since it was excavated to the phreatic surface (groundwater table). LSA-10-09 was backfilled using approved offsite soil to level of the sunounding surfaces in LSA-10-06. The footprint of LSA-10-09 was absorbed back into the footprint of LSA-I0-06 and will be included as part ofthe FSS.

END OF COMMENTS Survey Area:

Survey Unit:

Comments:

l0 06 Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Page P-2 of5 IIDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P.3 FSS SAMPLE INSTRUCTIONS Gamma Walkover Survey (GWS):

Scan Coverage 100% accessible excavation floors and walls Scan MDC 81.9 pCi/g Total Uranium (1,512 ncpm)

Investigation Action Level (IAL) 5,395 net cpm Systematic Sampling Locations:

Depth Number of Sample Comments These samples will be taken on a systematic grid.

0-15cm 0

15cm-1.5m I

> l.5m 8

Biased Survev/Samolins Locations :

Biased samples may be collected during Gamma Walkover Surveys (at the discretion of the HP Technician), after statistical analysis of the survey data, or at the direction of Radiological Engineering.

Instrumentation Ludlum 2221with44-10 (2x2 NaI) detector Used for gamma walkover survey and to obtain static count rates at biased measurement locations.

General Instructions:

l. Summarize daily work activities on the log sheets provided in Appendix P-6. Provide a description of site conditions (including the condition of isolation controls), samples collected and the status of gamma walkover surveys for every shift that involves work in this survey unit. In the event that a situation arises where the survey instructions cannot be followed as written, stop work and contact Radiological Engineering for resolution. All changes to the survey instructions shall 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, potential safety hazards that may be encountered during the performance of characterization activities (along with associated controls) will be documented using the FSS Daily Task Briefing log sheet.
3. A gamma walkover survey (GWS) will be performed using a 2"x2" NaI (Tl) detector held as close to the surface being surveyed as possible (nominally not to exceed l-in. distance from the surface). The meter will be moved in a serpentine pattem at a speed of approximately I foot per second or less. The gamma walkover survey will cover the percentage of the accessible surface areas within the area of interest as indicated in the table above. Notiff Radiological Engineering of any areas, conditions or constraints where surveying (or subsequent sampling) may not be possible. Document the conditions and any resolutions in the FSS Field Log.
4. A GPS system and data logger should be interfaced with the meter. The downloaded information will then be used to prepare maps illustrating relative count rates and to perform statistical analysis of the data. If a GPS data logging system is not available, contact Radiological Engineering to determine specific instructions for performing and documenting gamma walkover surveys.

Quality Record Westinghouse Non-Proprietary Class 3

6.

5.

8.

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Revision: 2 Page P-3 of5 HDP-PR-FSS-701, Final Status Survey Plan Development APPEI\\IDIX P-3 FSS SAMPLE INSTRUCTIONS This is a Class 1 Survey Unit. Each sample location will be selected systematically and have associated GPS coordinates specified. In the case of inaccessible sampling locations additional pairs of random sample coordinates may be generated with the Radiological Engineering's approval in order to identify an acceptable sampling location.

A map of the survey unit showing predetermined sample locations with associated GPS coordinates will be generated. A copy of the sample map and survey locations will be attached to the survey instruction.

Verifo that isolation controls established in accordance with HDP-PR-HP-602 are in place prior to the start of FSS.

Ensure isolation controls include, as necessary, the use of "waddles", a berm, or trenching to minimize the potential for contaminated soils and water from surrounding areas to cross the boundary of this unit.

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

At each systematic soil sampling location a composite soil sample will be collected from each location and depth as determined after the completion of excavation (and will be provided in Appendix P-4). The systematic sample locations will include 0 (zero) samples taken at a depth of 0 - 15 cm (surface) and I (one) samples collected at a depth of l5 cm - 1.5 m (root) and 8 (eight) samples collected at a depth of 1.5 m to 1.65 m (deep).

Biased soil sampling locations may be determined at the discretion of the HP Technician during the performance of the GWS. Biased soil sampling locations may also be determined at the discretion of Radiological Engineering based on statistical analysis of the survey/sampling data or process/historical knowledge of the area. Biased soil samples will be collected in a manner similar to systematic soil sampling locations. Radiological Engineer and/or the HP Technician will log the reason for collection of biased samples in the Field Log sheet and record the location of biased samples on Appendix P-4 of this survey instruction.

NOTE: If trash, waste, or other non-native materials are observed during sample collection, stop sampling activities and notify HP Supervision (or Radiological Engineering) before collecting samples at any sample location in the unit.

All samples collected as part of this survey will be analyzed at an off-site laboratory by gamma spectroscopy for uranium and gamma emitting radionuclides and for Tc-99 by liquid scintillation counting or ICPMS.

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Specific Instructions:

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

Before Beginning Work

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

NOTE: LSA 10-06 is bordered on the North and West sides by LSA-10-05, to the South by LSA-10-07 and to the East by LSA-I0-10. There are no burial pit areas being excavated directly adjacent to LSA-10-06 however; a physical barrier will be in place to minimize the potential for cross contamination from the surrounding LSAs with the exception ofthe shared boundary ofLSA-10-06 and LSA-10-07.

2. Rad. Engineering/HP Technician: Walk the area looking specifically for any debris material (e.g. asphalt, plastic, concrete, etc... ) that may indicate further remediation efforts are necessary.
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: If soil sampling to a depth greater than one foot is required, ensure HDP Safety & Health are aware of the activity, an Excavation Permit (Form HDP-PR-EHS-021-1) has been performed for the work area, and underground utilities have been identified and marked.

Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Page P-4 of 5 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE INSTRUCTIONS Gamma Walkover Surveys (GWS)

I. Establish a general area background, in accordance with HDP-PR-FSS-71 I.

2. Perform a gamma walkover of the survey unit holding the probe as close to the surface as possible, in accordance with HDP-PR-FSS-71l.
a. Look and/or listen for locations that exhibit anomalous readings (e.g., count rates in excess of the area background count rate and/or count rates that exceed the IAL for this unit).
b. Mark the location(s) exhibiting anomalous readings to facilitate possible future investigations (for example, use a flag, stake, or other marking resistant to anticipated environmental conditions).
3. At each location where anomalous readings occur, perform a more detailed point survey of the area. Pause and place the survey probe as close as possible to the surface to define and record the total count rate associated with the area of interest on the Field Log.

NOTE: If field conditions limit the ability to perform contact readings, collect readings as close as practical.

Contact HP Supervisor (or Radiological Engineering) regarding the issue for each location. The HP Technician, HP Supervisor and/or Radiological Engineer will log the issue (and resolution) for each location in the FSS Field Log and on applicable HDP survey forms.

4. GPS (and associated data logger) is the preferred method for performing GWS.

When a GPS and data logger is used, down load and provide the survey data to a GIS Specialist.

a. GIS Specialist: Provide colorimetric maps indicating survey coverage and measurements exceeding the IAL and send the survey data to Radiological Engineering.
b. Radiological Engineering: Provide statistical analysis to determine population characteristics of the survey data set and identi! any areas requiring additional surveys or sampling. Contact HP Technician to mark additional locations requiring survey or sampling as described above in Step 5 of these Specifi c Instructions.

lf a GPS and data logger cannot be used to perform GWS in any portion of this survey unit, the HP Technician will contact Radiological Engineering to determine compensatory survey methods. Radiological Engineering will log the compensatory methods in the FSS Survey Log.

Download the survey data at the end of each shift. To minimize data loss, periodically save the GWS data set throughout the shift.

Sampling

1. Collect soil samples in accordance with HDP-PR-FSS-71 I at locations identified in Appendix P-4. Note that additional biased sampling locations may also be listed as determined by the GWS or as determined by Radiological Engineering.
2. Collect one duplicate sample for every 20 samples. A minimum of one duplicate sample is required for each survey unit.
3. Care should be exercised to ensure the entire sample is included from within the depths specified for sampling.

When collecting the composite samples, vegetation and native debris/rocks with a diameter greater than I inch should be discarded.

NOTE: If a discrete source of radiation (e.g., a fuel pellet) is discovered during the performance of sampling activities, contact HP Supervision or Radiological Engineering. Pause any additional characterization work in the immediate area and use a plastic bag to contain the material. Label the plastic bag per HDP-PR-HP-201, Section 8.2 "Labeling Radioactive Material" and transfer the material from the survey unit for controlled storage in the Building 230 Sample Cage via physical turnover to the shift Sample Custodian.

Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Page P-5 of5 HDP-PR-FSS-701, Final Status Survey Plan Development APPEI\\IDIX P.3 FSS SAMPLE INSTRUCTIONS Monitor the count rates observed at all accessible surfaces within close proximif (e.9., 2 meter diameter) of each biased sampling location, as practical. Note any accessibility issues and discuss compensatory measures with supervision.

a. Contact and brief Radiological Engineering on the results obtained from monitoring the locations of biased sampling to receive instructions for further investigation or the need for additional excavation.

Collect bias samples from the surface to a depth of 6 inches.

Monitor the count rates within the depression created by the collection of biased soil samples.

Obtain and record the count rate on contact with features other than soil within the excavation. (e.9., native rock).

Record the nature and extent of features other than soil found within the excavation in the FSS Survey Log and contact Radiological Engineering to determine additional characterization methods, if necessary.

Submit samples for analysis following sample chain of custody requirements contained in HDP-PR-QA-006.

Prepared by:

ll;"ju]le lNs'"than (Print Name)

(Slgnarure)

{1o.K N oVanq 5.

6.

7.

8.

Peer Reviewed by:

Approved by (RSO):

(Print Name)

(Signature)

//'t?zo1j (Date) lluf (Print Name)

Quality Record Westinghouse Non-Proprietary Class 3

Revision: 2 Pase P-l of I HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-4 FSS SAMPLE & MEASTJREMENT LOCATIONS & COORDINATES Survey Area: No. LSA 10

==

Description:==

Burial Pits Open Land Area Survev Unit:

No. 06

==

Description:==

Section 6 Survev Tvoe:

Soil Sampli Classification: 1

  • Distance in feet from southwest comer ofthe surface.

Surface; Floor = F, Wall = W, Ceiling: C, Roof = R CSM; Surface, Root, Deep or Uniform Type; Systematic: S, QC = Q, Biased = B, Investigation: I Measurement or Samole ID Surface or CSM Type Start Depth (feet)

End Depth (feet)

Northing (Y Axis)*

Easting (X Axis)*

11006018ES00 Deep S

0.0 0.5 865078.8 827674.7 1100602BES00 Deep s

0.0 0.5 865068.7 827712.4 1100603BES00 Deep S

0.0 0.5 865058.6 827750.1 11006048ES00 Deep S

0.0 0.5 865048.5 827787.7 1r.00605BRS00 Root S

0.0 0.5 865038.4 827825.4 11006058RQ00 Root a

0.0 0.5 865038.4 827825.4 1100606BES00 Deep S

0.5 1.0 865038.4 827825.4 11006078ES00 Deep S

0.0 0.5 865031.0 827722.5 1100608B8S00 Deep s

0.0 0.5 865020.9 827760.2 11006098ES00 Deep S

0.0 0.5 864993.3 827732.6 Quality Record Westinghouse Non-Proprietary Class 3

LEGEND:

o Corner Point Ime-ro-oo ffi ma-to-09 (Backfilled) n SP Excavation Unit f] Ncs controls Boundary

+

RR Spur

>- Fence 0

20 40 Feet LSA Corner Points LSA-10-06 Hematite Decommissioning Proj ect Jefferson County Hematite. MO

LEGEND:

(E Systematic SamPle Ima-ro-oo ffi lse-to-09 (Backfilled) n eP Excavation Unit f] Ncs controls Boundary

-- RR Spur

>- Fence 0

20 40 Fet

-l FSS Systematic Samples LSA-10-06 ao I

o Hematite Decommissioning Proj ect Jefferson County Hematite. MO

HDP-PR-FSS-7o1 Appendix P-1 (Addendum)

Samole lD u-234 u-235 u-238 U-238/U-235 Ra6o Enrichment 5273-M-130516-05-01 3.49 0.19 1.43 7.57 2.10 5273-RA-130516-05-02 8.70 0.47 3.81 8.14 1.90 5273-M-130516-05-03 2.58 0.13 1.80 13.53 1.20 5273-RA-130516-05-04 4.14 0.22 1.64 7.32 2.10 5273-M-130516-05-05 2.65 o.'14 1.51 10.79 1.50 5273-RA-1 3051 6-05-06 5.50 0.30 1.61 5.33 2.90 5273-M-130516-05-07 2.52 0.13 1.61 12.29 1.30 5273-RA-130516-05-08 2.71 0.15 1.26 8.69 1.80 Average Quality Record 1.85

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