ML18019A658
| ML18019A658 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 01/09/2018 |
| From: | Westinghouse |
| To: | Office of Nuclear Material Safety and Safeguards |
| Shared Package | |
| ML18019A532 | List:
|
| References | |
| HEM-18-2 | |
| Download: ML18019A658 (20) | |
Text
0 2013 Westinghouse Electric Company LLC. All Rights Reserved.
(9 Westinghouse
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Hematite Decommissioning Project NUMBER:
HDP-INST-FSS-LSAOS-03 TITLE:
Final Status Survey Plan and Instructions for Survey Area & Unit: LSA 05-03 REVISION:
0 EFFECTIVE DATE:
August 15, 2013 Approvals:
Author:
Owner:
Michelle E. Bresnahan Joseph S. Guido
Revision: 2 Page P-l of 10 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 FINAL STATUS SURVEY SAMPLING J>LAN FOR SOIL SURVEY UNITS Survey Area: LSA-05 Survey Unit:
03
==
Description:==
Barns and Cistem Open Land Area
==
Description:==
Red Barn
- 1. Verify Survey Unit Isolation & Control
- a.
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 Package Development and Isolation and Control Measures to Support Final Status Survey?
Yes'Fv] NoD (If.. No", discontinue survey design until area turnover requirements have been met)
- 2. Evaluate Final Remedial Action Support Survey (RASS) Data
- a.
Number of RASS Samples:
13
- b.
Record analytical results and summary statistics for each RASS sample U-234 U-235 U-238 Tc-99 Th-232 Ra-226
( oCi/e)
(pCi/g)
(oCi/e)
(pCi/g)
(oCi/Q)
(pCi/e)
Minimum
< MDA
< MDA
< MDA NR
- 1. 00E+OO 8.58E-02 Maximum 2.90E+Ol 1. 60E+OO 9. 56E+OO NR 3.45E-01 7.22E- 01 Mean
- 1. 02E+Ol 4.48E- 01 1. 72E+OO NR
-8. 45E-03 4.07E- 01 Median 7.81E+OO 2.40E-01
< MDA NR 8.97E- 02
- 4. 26E-01 Standard
- 8. 13E+OO 4. 72E-Ol 3.07E+O O NR 3.69E-01 1.63E-01 Deviation
- c.
Are all RASS results less, or equal to the appropriate DCGLw?
Yes[C No~
- d.
If"No", have remaining locations of elevated concentration been evaluated?
N/AF] Yes~ Nor]
(If No", discontinue survey design until investigation is complete.)
- e.
Have elevated areas identified by gamma walk.over surveys been investigated?
YesE] No D (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?
YesE] NoE]
(If No", terminate survey design, perform additional characterization or remediation and repeat the planning process.)
- 3. Deflne the Survey Unit Classification Write a short description of the survey unit based on historical use and remedial activities:
LSA 05-03 contains the former footpront of the Wood (Red) Darn. The Wood Barn was used to store both clean am.I contaminated equipment throughout the facility's operating period. The building was demolished and shipped to an approved offsitc burial location Classification:
Survey Unit Area (cn2) :
1563.3
- a.
Has the Classification changed from the Initial Classification as indicated in DP Ch. 14? Yesle] No~
(If Yes", then include a copy of Appendix P-5, Survey Unit Classification Change Form.)
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-2 of 10 HDP-PR-FSS-701, Final St.atus Survey Plan Development APPENDIX P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS
- b.
Is the Survey Unit area less than the maximum size for the Classification?
Yes~ NofFl (If"No", then tetminate swvey design and evaluate dividing the swvey unit into multiple survey units.)
- 4. Detlne the Surrogate Evaluation Area (SEA)
- a.
Select the appropriate SEA as input to calculating scan sensitivity and variability in the RASS SOF.
Plant Soils SEA ~
Tc-99 SEA F Burial Pit SEA Fl
- 5. Define Final Survey Unit Conditions ID No Excavations, Paved/Partially Paved or Excavated but not Backfilled
~ Excavated and to be Backfilled ID Excavated and Backfilled Note: If a portion of a Survey Unit is paved, then Surface Soil strata begins at the bottom of the paved surface and extends 15 cm from that point below grade. The lower depth of the Root Strata remains at 1.5 m below grade. The pavement is then treated as a separate structural Survey Unit within the Survey Area.
- 6. Define the Type of FSS Samples and Measurements
- a.
Select the appropriate types of samples and measurements for fSS of this Survey Unit that corresponds to the final condition and survey classification of the Survey Unit.
Not Excavated, Paved/Partially Paved or Excavated and to be Backfilled:
Excavated but not Backfilled:
[F Surface Soil (< 15cm) Samples.
fr" Root Strata Soil Samples composited from 15cm to 1.5m.
Note: If the SOF ofthe Root Strata sample exceeds 0.5, a composite sample is collect from 1.5 meters to an appropriate depth (deep stratum)
Excavated and Backfilled
[r Core through backfill layer to the lowest point where remediation occurred and composite a sample from a coring that extends one meter deeper than the lowest point where remediation occurred.
F Surface Soil Samples taken from any remaining surface soil strata and Root Strata Soil Samples taken at the same locations as Surface Samples, composited over the entire root strata.
~ Root Strata Soil Samples composited from exposed grade to I.Sm and Deep Strata Soil Samples taken at the same locations as Root Samples of the top 15cm of the deep strata W] Deep Strata Soil Samples of the top 15 cm of the exposed Deep Strata.
Scan Measurements:
IE]
lr l 1000/o Scan Coverage of Exposed Soil.
____ % Scan Coverage of Exposed Soil.
Other _ ______ _
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-3 of 10 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS
- 7. Define Derived Concentration Guidelbte Levels (DCGL)
- a.
Select the appropriate DCGL for each Radionuclide of Concern (ROC) based on the corresponding SEA and the Uniform Conceptual Site Model (CSM).
- lfTc-99 was measured during the characterization/RASS survey, then the "Measure Tc-99" DCGLs will be used from Appendix A of HDP-PR-FSS-701.
- IfTc-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.
Surface Strata Root Strata Deep Strata 1
Uniform fnCi/v;)
{nCi/v\\
(pCi/g)
(oCi/g) 508.5 235.6 872.4 195.4 14.1 3
11.8 2.5 207 6 183.3 55 1.1 168.8 15 1 30.1 74 25.1 Th-232 + C 47 2
5.2 2
Ra-226 + C 5
- 2. 1 5.4 1.9
- 1.
The Deeo Strata DCGLs corresPond to the Excavation Scenario DCGL from Appendix A of HDP-PR-FSS-701.
NOTE: The Uniform DCGL will be used to calculated the number of samples in the statistical survey po1>ulation.
- 8. Calculate the Number of Samples in the Statistical Survey Population NOTE: The Statistical Survey Population is routinely derived based on the Uniform DCGL 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 lfthe excavation significantly extends into the deep strata, then the alternate approach presented in section 8.2.5 ofHDP-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 DCGLw values.
The values used in the following equations (SOFmcan and crsoF) can be found in the tables from Section 2b and Section 7a.
- a.
Calculate a mean SOF for the characterization/RASS survey data set.
Conc 0 _234 Conc 0 _ 235 Cone 0 231 ConcTc-99 Conolh-ni + ConcRa_226 SOFM..,
+
+
+
+ ---=-='-
DCGLu.23,4 DCGLu-ns DCGL 0 131 OCGLTc-99 OCGLn,_232 DCGLRa_226 Lower Bound of the Grey Region (LBGR) = SOFMcan = 0.46
- b.
Calculate the mean and standard deviation in the SOF for the cbaracterization/RASS survey data set.
NOTE: For the calculation of SOFMcan and O ooF, include the concentration for Tc-99 if it was measured. 1f Tc-99 was not measured, include the modified U-235 DCGL and omit Tc-99 concentration term.
O
=
O u-2J<
+
O U-23)
+
O u - 238
+
O Tc-99
+
OTh-232
+
ORa-226
'(
)2 (
)2
(
)2 (
)2 (
)2
(
)2) soF 1, DCGL u_234 DCGL 0 _23)
DCGL u-ne DCGLTc---99 DCGLTh-2J2 DCGLR*-224 Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-4 of I 0 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS Survey Unit OsoF =
Background crsop=
0.28 0.16
./' Used in worksheet survey design
~
Fl
- 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 concurrence.
- d.
Calculate the Relative Shift.
R I.
Sh.ft 1-LBGR e attve O'so, Relative Shift =
1.93
- e.
Is the Relative Shift between 1 and 3?
YesW No r If"Yes", then continue to step lOf.
If"No", then adjust the LBGR as necessary to achieve a relative sh ift between 1 and 3. In order to accomplish this, the LBGR may be set as low as the MDC for the analytical technique.
Adjusted LBGR =
NA Adjusted Relative Shift =
1.93
- f.
Determine t he Number of Samples (N for the Sign test or N/2 for the WRS test) required corresponding to the Type I error, Type II Error and the Relative Shift.
If the Sign Test has been chosen as the statistical test, then use Appendix E ofHDP-PR-FSS-701 to determine N.
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 or N/2) =
I I
- a.
NOTE:
When U-235 is reported as negative or zero and U-238 is reported as positive, set the sample enrichment lo 0.71 % (natural uranium).
When U-235 is reported as positive and U-238 is reported as negative or zero, set the sample enrichment to 100% (highly enriched).Note: When both U-235 and U-238 data 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 enrichment that corresponds to the mean U-238:U-235 ratio.
Calculate and record the average Uranium enrichment for the survey unit using the enrichment calculated for each individual sample.
Average Enrichment (%)
68.09 The Activity Fractions ( f) for each radionuclide that corresponds to the mean enrichment in the following calculations is obtained from Appendix G of HDP-PR-FSS-701.
If the Uniform DCGL is not used, and the excavation extends into multiple CSMs (e.g. surface, Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 Page P-5 of 10 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 OCGLw for Total Uraniwn f u-n<
+
f u >>s
+
f u-2*
DCGLu-2><
DCGLu-m DCGLu_2,.
DCGLwToLU for Total Uranium =
52.8 pCi/g
- c.
Identify the Radiological Instrument that will be used for scanning.
w 2"x 2" NaI Detector F"
FIDLER Nal Detector
[F Other _ _ ____ _
- d.
Calculate the Scan MDC for the selected instrument NOTE: 2x2 Sodiwn Iodide (with surveyor efficiency factor of0.5 and a background count rate of 10,000 cpm).
If the instrument is not a 2"x 2" Nal detector, or if the background count rate exceeds 10,000 cpm, the MDCsc,n can be determined in accordance with DP Ch. 14, section 14.4.4.2.9 (Reference 5.1) ofHDP-PR-FSS-701.
f u-234
+ __fu-23s
+
fu-238 7383pCi/g 4.9pCi lg 62.BpCilg MDCscan for Total Uraniwn =
121.1 pCi/g
- a.
Select the appropriate DCGLw for Th-232 and Ra-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-232 DCGLw =
2 pCi/g Ra-226 DCGLw =
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 alternate approach as presented in DP Ch. 14, section 14.4.3.1.10 (Reference 5.1) of HDP-PR-FSS-701 may be used in lieu of using the most conservative.
- b.
Identify the Radiological Instrument that will be used for scanning.
~
2"x 2" Nal Detector E_
FIDLER Nal Detector IC_ Other ______ _
- c.
Calculate the Scan MDC for the selected instrument Note: Table 6.4 ofNUREG-1507 (Reference 5.8) ofHDP-PR-FSS-701 has calculated an MDC5can of 1.8 pCi/g for Th-232 and 2.8 pCi/g for Ra-226 when using a 2"x 2" Nal detector.
Note: If the selected instrument is not a 2"x 2" Nal detector, then the MDCscan can be determined in accordance with DP Ch. 14, section 14.4.4.2.9 (Reference 5.1) ofHDP-PR-FSS-701.
1.8 pCi/g MDCscan for Ra-226 =
2.8 pCi/g NOTE: If a value is not applicable, mark as NIA.
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 Page P-6 of 10 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS
- 11. Adjust the Statistical Sample Population Size (N or N/2) for Scan MDC
- a.
If the 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 (Nor N/2) calculated in step 8fto calculate the area bounded by the statistical sample population.
Area Bounded by the Statistical Sample Population (Asu) =
142. 1 m
2 URANIUM
- c.
Is the Scan MDC for the selected instrument less than the DCGLw that was calculated for Total Uranium? (compare values from step 9b and 9d)
YeslC_ Now I (If yes proceed to step l lk)
- d.
Using the Area Factors in Appendix H ofHDP-PR-FSS-701, calculate a Total Uranium AF for each listed area using the Activity Fractions (j) for each radionuclide that corresponds to the mean enrichment from Appendix G of HDP-PR-FSS-701.
DCOL.
x fu..,..
+
fu.ns fu.n, AP1.u -
(
)
1""
APu.D< x DCGL..u.,..
Aflu n; x DCGL..u.m Aflu.ZJI x DCGL..u a Area(m.t) 153375 10000 3000 1000 300 100 30 10 3
1 AFTota1U 1.00 1.12 I. I 5 I. I 5 2.20 3.09 4.2 1 6.06 12.38 26.29 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, or the Excavation Scenario.
- e.
Find the Area Factor (AFTowu) calculated in the previous step that corresponds to the area bounded by the Statistical Sample Population (Aat ).
AFTotU for the Bounded Area (Asu ) =
2.9
- f.
Multiply the DCGLw calculated for Total Uranium by the Arca Factor (AFTotu) to derive a DCG~c for Total Uranium.
DCGLEMc for Total Uranium =
152. 12 pCi/g
- g.
ls the MDCsc.n for the selected instrument less than the DCGLEMc that was calculated for Total Uranium?
NACJ Yes~ No~
(lf"Yes" then proceed to step 1 lk.)
- h.
Calculate a new AF (AFEMc) corresponding to the MDCscan for the selected instrument by dividing the MDCscan by the DCGLw.
NA
- 1.
Find the Area (A' ) that corresponds to the Area Factor (AFEMc).
A' for Utotal =
NA Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-7 of 10 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS J.
Calculate an Adjusted Number of Samples (NEMc) for the Statistical Sample Population size that corresponds to the bounded AEMC*
Asu NEMc =--
A' NF.Mc corresponding to A' for Utotal NA THORIUM-232
- k.
Is the MDCscan for Th-232 less than the DCGLw ?
(lf"Yes" then proceed to step llr)
YesE., No[_,
- l.
Find the Area Factor (AF) in Appendix H that corresponds to the area bounded by the Statistical Sample Population (A511).
AFTh-232 for the Bounded Area (A<;U)
NA
- m. Multiply the DCGLw for Th-232 by the Area Factor (AF) to derive a DCG4:Mc for Th-232 DCG4:Mc for Th-232 = NA pCi/g
- n.
Is the MDCscan for Th-232 less than the DCG4:Mc that was calculated for Th-232?
NAE, Yes[_, No[_,
(If "Yes" then proceed to step 1 lr)
- o.
Calculate a new AF (AFEMc) corresponding to the MDCscan for the selected instrument by dividing the MDCscan by the DCG Lw.
AFEMc for Th-232 =
NA
- p.
Find the Area (A' ) that corresponds to the Area Factor (AFEMc).
A' for Th-232 =
NA NOTE: The Area Factors for Th-232 can be found in Appendix H ofHDP-PR-FSS-701.
- q.
Calculate an Adjusted Number of Samples (NEMC) for the Statistical Sample Population size that corresponds to the bounded AEMC*
N
= Asu EMC A'
N'c corresponding to A ' for Th-232 NA RADIUM-226
- r.
ls the MDCScan for Ra-226 Jess than the DCGLw ?
(lf"Yes" then proceed to step 12)
YesCJ No~
- s.
Find the Area Factor (AF) in Appendix H that corresponds to the area bounded by the Statistical Sample Population (Asu)-
AFRa-226 for the Bounded Area (Asu) =
3.69 Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 Page P-8 of 10 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS
- t.
Multiply the DCGLw for Ra-226 by the Area Factor (AF) to derive a DCGLEMC for Ra-226 DCGLEMC for Ra-226 =
7.02
- u.
Is the MDCscan for Ra-226 less than the DCGLEMc that was calculated for Ra-226?
NA[r YesW No[r (lf"Yes" then proceed to step 12)
- v.
Calculate a new AF (Af EMc) corresponding to the MDCscan for the selected instrument by dividing the MDCscan by the DCGLw AFEMC for Ra-226 =
Nt\\
- w. Find the Area (A') that corresponds to the Area Factor (AFEMc).
A ' for Ra-226 =
NA
- x.
Calculate an Adjusted Number of Samples (NEMC) for the Statistical Sample Population size that corresponds to the bounded AEMC*
N
=Asu EMC A'
NEMc corresponding to A ' for Ra-226 =
NA
- 12. Calculate the Grid Spacing
- a.
Larger of N from step 8f and the maximum value of NEMC from 1 lj, 1 lq or 1 lx.
CNEMc[ max] or N) =
I I
- b.
Is the Survey Unit a Class 3 Survey Unit?
(Jf"Yes", then continue to step 13)
Yes[r No~
- c.
Calculate Grid Spacing (L).
1 i;;: Triangular Grid L =
Area
. 866(N or Nn )
Cc:: Square Grid Area L =, ___ _
(NorNn )
Grid Spacing (L) for Survey Unit =
12.8 1
- 13. Generate a Survey Map
- a.
Assign a unique identification number to each sample in the Statistical Sample Population using the guidance and direction provided in Appendix M of HDP-PR-FSS-701.
- b.
Generate a graphic representation of the Survey Unit with dimensions and boundaries corresponding to the established reference coordinate system in accordance with step 8.2. l O of IIDP-PR-FSS-701.
- c.
Using the reference coordinate system, ascertain coordinates for each sample location.
m
- d.
Designate sample locations, and location coordinates on Appendix P-4, FSS Sample & Measurement Locations & Coordinates and attach a copy of that form to this FSSP.
- e.
Attach a copy of the developed Survey Map with sample locations to this FSSP.
- 14. QC & Biased Samples
- a.
Randomly choose 5% of the Statistical Sample Population as QC Samples in accordance with Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-9 of 10 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-1 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 ta.ken at the discretion of the survey designer and the basis for taking them. Necessary biased samples will be explained on Appendix P-3, FSS Sample Instructions.
- 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, FSS Sample &
Measurement Locations & Coordinates.
- 15. Scan Coverage
- a.
The Survey Unit is:
~ Class 1
.c_ Class 2 F Class 3
- b.
Based on 1he Survey Unit Classification, the scan coverage in this Survey Unit is;
~
100% Scan Coverage of exposed soil IF
% Scan Coverage of exposed soil
- c.
Designate any specific scan locations as determined necessary, on Appendix P-3, P'SS Sample Instructions and attach a copy of that form to this FSSP.
- 16. Investigation Levels
- a.
The Survey Unit is:
.c_ Class 3
- 1) Scan Investigation Levels are set at:
NA cpm Sample Investigation Levels are set at 50% of the DCGLw when expressed as the SOF.
- b.
The Survey Unit is:
[F Class 2
- 2) Scan Investigation Levels are set at:
NA cpm Sample Investigation Levels are set at the DCGLw when expressed as the SOF.
- c.
The Survey Unit is:
~ Class 1
- 3) Scan Investigation Levels are set at:
1698 cpm Sample Investigation Levels are set at the DCGLw when expressed as 1he SOF.
- 17. Survey lnstn.1ctions and Sample Measurement Locations and Coordinates FSSP Approval Attach a copy of completed forms as appropriate:
~ Appendix P-3, FSS Survey Sample Instructions,
~ Appendix P-4, FSS Sample Measurement Locations & Coordinates
.c_ Appendix P-5, FSS Unit Classification Change Form
~ Appendix P-6, FSS Field Log
~ Survey Unit Figure r
Other:
Quality Record Westinghouse Non-Proprietary Class 3
Revision : 2 HDP-PR-FSS-701, Final Status Sur\\'ey Plan Development APPEN DIX P-1 Page P-10 of 10 FINAL STATUS SURVEY SAMPLING PLAN FOR SOIL SURVEY UNITS
- 18. f'SSP Approval Prepared by :
Peer Reviewed by :
Approved by (RSO):
Quality Record Westinghouse Non-Proprietary Class 3 B/15/13_
g.rfc2 /)
(Dale)
,,,13
- '1-1~ -
(Dale)
Revision: 2 Page P-1 of 6 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE fNSTRUCTIONS Survey Arca:
_0_5___
==
Description:==
Barns and Cistern Open Land Area Survey Unit:
_0_3 _ ____ D_ es_c_*r_,ip_t_io_n_: ___ W_o_o_d_,_(R_e_d..,_)_B_a_n_1 _Ai_*_ea _____ _ _ ___________ _
Comments:
The Wood Barn building existed on the property prior to purchase by Mallinckrodt in 1956. lt was used to store both clean and contaminated equipment throughout the facility's operating period. The Wood Barn building was demolished and shipped offsite for disposal in Spring 20 11. The floor of the wood barn is dirt and may have residual contamination in low concentrations.
An initial RASS walkover survey performed on 3/14/20 13 indicated two areas with elevated readings. One adjacent to State Road P and one close to d1e parking area), as indicated by the black coloring on Figure:
"Combined Probes M and S LSA-05-03 Barn Area RAS Gamma Walkover Survey". Samples were collected and analyzed onsite to guide remediation of the two elevated areas. The results of the onsite sample analysis are shown on forms HDP-PR-IlP-423-1.
The fo llowing samples were collected from the elevated area located near the parking area:
474 1-RA-1 30326-05-0 1 through 4741-R.A-130326-05-03; 4774-RA-130328-05-0 I through 4774-RA-130328-05-05 and 4738-RA-1 30328-05-0 I ilirough 4738-RA-I 30328-05-04 The following samples were collected in from the elevated area adjacent to State Road P:
4792-RA-130329-05-0 1 through 4792-RA-130329 11 and 4925-RA-1304 10-05-0 I ilirough 4925-RA-130410-05-04 Remediation and sampling activities took place until all samples collected from each elevated area were below 80% of the Uniform DCGLw-Table: "RASS Samples collected from the elevated areas found in LSA 05-03" provide the calculated SOF from the samples collected in d1e elevated are.as.
Afler the initial RASS scans and sampling were complete, it was determined that additional excavation was required to remediate non-radiological contamination. The extent of the non-radiological remediation activities required an additional KASS walkover to be performed to ensure the introduction of workers and heavy equipment did not impact this survey w1it. The results of all RASS performed are provided in Section 6.0 CRASS Data and Figures).
The survey unit is classified as MARSSIM Class l.
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-2 of 6 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE TNSTRUCTIONS Gamma Walkover Survey (GWS):
Scan Coverage I 00% accessible excavation floors and walls Scan MDC 121. 1 pCi/g Total Uranium (1,352 ncpm) 1698 Net CPM*
- After the GWS is performed, the data Investigation Action Level (IAL) collected will be examined to confirm areas exceeding the calculated IAL and statistical analysis will be performed to determine significance.
Systematic Sampling Locations:
Depth Number of Sample Comments 0 - 15 cm 0
None 15 cm - 1.5 m 11
> I.Sm 11 Biased SurvevlSampling Locations:
Biased samples may be collected: I) during Gamma Walkover Surveys (at the discretion of the HP Technician), 2) after statistical analysis of the survey data or, 3) at the direction of Radiological Engineering.
Instrumentation Used for gamma walkover survey and to obtain Ludlum 2221 with 44-10 (2x2 Nal) detector static count rates at biased measurement locations.
General Instructions:
I.
Summarize daily work activities on Appendix P-6. Each working day provide a description of site conditions (including the condition of isolation controls), samples collected and the status of gamma walkover surveys. In the event that a situation arises where the survey instructions cannot be followed as written, stop work and contact Radiological Engineering (or RSO) for resolution.
All changes to the survey instructions shall be approved by Radiological Engineering (or RSO) before continuing work and be documented by the HP Technician (or Radiological Engineer) in the FSS Field Log.
- 2.
In accordance with HDP-PR-FSS-70 1, Final Status Survey Plan Development (.~ec. 8.4.2), documentation of activities performed, equipment used, potential safety hazards that may be encountered dw*ing 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" Nal (Tl) detector held at a distance as close as possible to the surface being surveyed. The meter will be moved in a serpentine pattern at a speed of approximately I foot per second or less. The gamma walkover survey wil I cover the percentage of the accessible surface areas within the area of interest as indicated in the table above.
Noti fy Radiological Engineering of any areas, conditions or constraints where surveying (or subsequent sampling) may not be possible. Docwnent the conditions and any resolutions in the fSS Field Log.
Quality Record Westinghouse on-Proprietary Class 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE INSTRUCTIONS Page P-3 of 6
- 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.
S.
Class I Open Land Survey Units will be gridded to identify the systematic sampling locations. Each sample location will have associated GPS coordinates specified. In the case of inaccessible sampling locations, the sample location will be relocated witJ1i.n a radial distance of2 feet of the original sample location.
- 6.
Verify that isolation controls established in accordance with HDP-PR-HP-602 are in place prior to the start ofFSS.
- 7.
Perform daily pre and post QC source checks in accordance with HDP-PR-H P-416.
- 8.
A map of the survey unit showing predetermined sample locations is provided. Additional (biased) sampling may be required, based on results of the GWS, al the discretion of the HP Technician based on field conditions, or as determined by Radiological Engineering. Statistical analysis of the survey/sampling data will be used to help identify locations for biased soil sampling. Biased soil samples will be collected in a manner similar to systematic soil sampling locations. Record the location of biased samples on the FSS Field Log.
- 9.
At each systematic soil sampling location a composite soil sample will be collected from each location and depth listed on Appendix P-4.
JO. 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.
11. All samples collected as pait of this survey will be analyzed at an off-site laboratory by gamma spectroscopy for uranium and gamma emitting radionuclides (Th-232, Am-24 1, etc.), and for technetium-99 by liquid scintillation counting or ICPMS.
Specific Instructions:
NOTE: Unless otherwise indicated, the performance of these specific instructions is the responsibility of the llP Technician.
Before Beginning Work
- 1.
Rad. Engineer/HP Technician: Verify and document (each shift) that isolation controls established in accordance with HDP-PR-HP-602 arc in place prior to the sta1t ofFSS using ci1e Daily Task Briefing log sheet.
- 2.
Rad. Engineer/HP Technician: Perform a daily task-specific briefing; documenting d1e attendants, planned work activities, anticipated hazards, and controls on the FSS Daily Task Briefing log sheet. Retain all completed daily briefing log sheets in the Field Log section of this package.
NOTE : If soil sampling to a depth greater than one foot is required, ensure HOP Safety & Health are aware of the activity, an Excavation Permit (Form HDP-PR-El lS-02 1-1) has been performed for the work area, and underground utilities have been identified Carn ma Walkover Survey (GWS)
- 3.
Establish a general area background, in accordance with HDP-PR-FSS-7 11.
- 4.
Perform a gamma walkover of the survey unit holding the probe as close to the surface as possible, in accordance with HDP-PR-FSS-711.
- a.
Look and/or listen for locations that exhibit anomalous readings (e.g., count rates in excess of the area background count rate ai1d/or count rates that exceed the JAL for this unit).
- b.
Mark the location(s) exhibiting anomalous readings to facilitate possible future investigations (for example, use a nag, stake, or other marking resistant to anticipated environmental conditions).
Quality Record W estinghouse Non-Proprietary C lass 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE INSTRUCTIONS Page P-4 of 6
- 5.
Al 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.
OTE: If field conditions limit the ability to perform contact readings, collect readings as close a~ practical. Contact I IP Supervisor (or Radiological Engineering) regarding tJ1e issue for each location. The I IP Technician. HP Supervisor and/or Radiological Engineer will log the issue (and resolution) for each location in the FSS Field I,0g and on applicable HOP survey forms.
- 6.
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 identify any areas requiring additional surveys or sampling. Contact I lP Technician to mark additional locations requiring survey or sampling as described above in Step 5 of these Specific Instructions.
If a CPS 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.
Sampling
- 7.
Obtain soil samples at locations and depths identified in Appendix P-4 and at locations specified by Radiological Engineering in accordance with HDP-PR-FSS-711.
- 8.
Collect one duplicate sample for every 20 samples. Collect a minimum of one duplicate sample is required for each survey unit.
- 9.
Submit samples for analysis following sample chain of custody requirements contained in HDP-PR-QA-006.
I 0. When performing biased sampling, monitor the count rate within the depression created by the biased surface soil sample.
- a.
If the count rate within the depression exceeds the count rate on the surface by a factor two, then collect an additional soil sample from a depth of 15 cm 30 cm.
- b.
Monitor the count rate within the depression created at each location requiring a second biased soil sample.
- 11. Monitor the count rates observed at all accessible surfaces within close proximity (e.g., 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 (or l LP Supervision) on the results obtained from monitoring the locations of biased sampling to receive instructions for further investigation or the need for additional excavation.
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE INSTRUCTIONS Required Additional Surveys Page P-5 of 6 NOTE: The following items were identified in LSA 05-03 that require survey. The surveys will be performed in accordance with HDP-PR-HP-31 I and will be compared to the limits found in document Guidelines for Decontamination of Facilities and Equipment Prior to Release for Unrestricted Use or Termination of Licenses for Byproduct, Source, or Special Nuclear Material.
- 1) Fire Hydrants (located in the NE corner) adjacent to Highway P.
- 2) Fence Posts (located in the NE comer) adjacent to Highway P.
Meters B, I or D (Ludlum 2360 w/ 43-89) will be selected to perform the following surveys. See attached sheets (Minimum Detectable Concentration (MDC) Worksheet) for scan MDC and JAL calculations.
II~
Contamination Survev (SCS):
II
~
erae:e I 00% exposed surfaces Meter B: Alpha Scan MDC 82 dpm/ 100cm 2
Meter B: Beta Scan MDC 2,057 dpm/100cm2 Meter B: Alpha Investigation Action Level (IAL) 15 Net CPM Meter I3: Beta lnvestigation Action Level (lAL) 2 18 Net CPM Meter I: Alpha Scan MDC I 1 0 dpm/1 OOcn/
Meter l: Beta Scan MDC 2,725 dpm/100cm' Meter I: Alpha Investigation Action Level (IAL) 19 NetCPM Meter 1: Beta Investigation Action Level (JAL) 252 Net CPM Meter D: Aloha Scan MDC 169 dom/ 100cm 2
Meter D: Beta Scan MDC 2,023 dpm/ I 00cm' Meter D: Alpha lnvestigation Action Level (JAL) 27 Net CPM Meter D: Beta Investigation Action Level (IAL) 2 17 Net CPM Svstematic Surface Contamination Measurements:
Number of Locations The number of measurements is dependent on the size of the item. A minimum of one measurement will be performed.
A measurement will be performed on the surface of the item approximately every linear meter.
Biased Surface Contamination Measurements:
l fa scan result is greater Lhan either the alpha or beta IAL listed above, take a static measurement and a removable activity smear.
lf tJ1e item scanned is concrete collect 3 volumetric samples from O" to 0.25" depth at locations with the highest static measurements. Volumetric samples will be sent to an otfsite laboratory for analysis by ganm1a spectroscopy and liquid scintillation or lCPMS for Tc-99.
Instrumentation Ludlum 2360 w/ 43-89 I Used for direct alpha and beta measurements and surface contamination scan survevs.
- 12. Perform daily pre QC source check on the instrument used in accordance with HDP-PR-HP-4 11. Perform a post QC source check in the same manner you would perform a pre QC source check. Note in the comment section of Form HDP-PR-HP-4 I 1-4 when post QC check is performed.
Q uality Record Westingho use Non-Proprietary C lass 3
Revision: 2 HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-3 FSS SAMPLE INSTRUCTIONS Page P-6 of 6
- 13. Perfom, 3 background measurements in alpha mode and 3 background measurements in beta mode in the general location of the area to be surveyed. The average of the 3 measurements for alpha and the 3 measurements for beta wil l be the field background used.
- 14. Perform a surface contamination scan survey over 100% of the exposed concrete surfaces in accordance with HDP-PR-HP-3 I I. Hold the detector as close as possible to the surface being surveyed. Move the meter at a speed of approximately 3 inches per second.
- 15. Perfonn static surface contamination measurements at systematic locations de fined in the table above in accordance with IIDP-PR-HP-311. At each measurement location a I minute static count will be performed.
- 16. If results in excess of the IA L are found, follow the instructions listed above under Biased Surface Contamination Measurements.
- 17. Jn the locations where a static surface contamination measurement is taken, collect a removable activity smear survey in accordance with HDP-PR-HP-3 11.
- 18. Document all surveys performed on items found in the survey unit on Form HDP-PR-HP-3 11-1.
8/t-1 /13 Prepared by:
(Print Name)
(Date)
Peer Reviewed by:
fl_ oc K Ne vect. f1
~-/r-!.J (Date)
Approved by (RSO):
?-I t(-/5 (Date)
Quality Record Westinghouse Non-Proprietary Class 3
Revision: 2 Page P-1 of I HDP-PR-FSS-701, Final Status Survey Plan Development APPENDIX P-4 FSS SAMPLE & MEASUREMENT LOCATIONS & COORDINATES Survey Area:
No.
05
==
Description:==
Barns and Cistern Open Land Arca Survey Unit:
No.
03
==
Description:==
Wood (Red) Barn Arca Survey Type: Soil Sampling Classification:
1 Measurement or Surface Type Start End Easting Northing Sample ID orCSM Depth Depth (X Axis)*
(Y Axis)*
(ft)
(ft)
L050301 PRSOO Root s
0 2
826747.6 864773.6 L050302PES00 Deep s
2 2.5 826747.6 864773.6 L050303PRS00 Root s
0 1.5 826706.5 864784.6 L050304PEQOO Deep Q
1.5 2
826706.5 864784.6 L050304PES00 Deep s
1.5 2
826706.5 864784.6 L050305PRS00 Root s
0 4.5 826777.6 864803.6 L050306 P ESOO Deep s
4.5 5
826777.6 864803.6 L050307PRS00 Root s
0 3
826736.6 864814.6 L050308PES00 Deep s
3 3.5 826736.6 864814.6 L050309PRS00 Root s
0 4.5 826807.7 864833.7 L050310PES00 Deep s
4.5 5
826807.7 864833.7 L050311 PRSOO Root s
0 4
826766.6 864844.7 L050312PES00 Deep s
4 4.5 826766.6 864844.7 L050313PRS00 Root s
0 4
826725.6 864855.7 L050314PES00 Deep s
4 4.5 826725.6 864855.7 L050315PRS00 Root s
0 4
826837.7 864863.7 L050316PES00 Deep s
4 4.5 826837.7 864863.7 L050317PRS00 Root s
0 3.5 826796.7 864874.7 L050318PES00 Deep s
3.5 4
826796.7 864874.7 L050319PRSOO Root s
0 3
826755.6 864885.7 L050320PES00 Deep s
3 3.5 826755.6 864885.7 L050321 PRSOO Root s
0 3.5 826826.7 864904.8 L050322PESOO Deep s
3.5 4
826826.7 864904.8
- Distance in feet from southwest comer of the surface.
Surface:
r loor = F, Wall = W, Ceiling - C, Roof = R CSM; Surface, Root, Deep or Unifonn Type; Systematic = S. QC = Q, Biased = H, Investigation -
I Quality Record Westinghouse Non-Proprietary Class 3
Northing: 864931 L Easting: 826816.9
\\
Northing: 864926.1
_\\........_~
Easting: 826835.5 Northing: 864907.1
)
" 8268'6.2 orthing: 864874.1
....... 5 1.68644
\\
"'Northing:*8§4855.9 Easting: 826853.2 Northing: 864859.4 Easting: 826835.7 LEGEND:
Corner Point D Land Survey Area C]LSA-05-03
[] Property Boundary
[l]J Former Building Footprint 0Road Parking Area Fence
- cc:z Gate Location 0
20 40 Feet LSA-05-03 Boundary Requested By:
Document/Reason:
M. Bresnahan Final Status Survey Hematite Decommissioning Project Jefferson County Hematite, MO Prepared By:
Rev:
DJH 0
Siu:
8.Sxll Date:
08-IS-13
L050322PES00 L050321PRS00~
I'.050320P.ESOO
/,
iros0319PRS00 L0503*18PES00 L050317PRS00 e
/
L05031!6PESOO
>>"' /
/
L05031sP RSOO err, L050314PES00 LSA-OS-03
/
~~ b03 03 l3PRS00 c,.!Ji L050312PES00 L0503 l l PRSOO e
/
L050310PES00 L050309PRS00 L050308PES0 LOS0307PR'sO o /
L050306P.ES00 0
7 5PRSOO L050302PESOO L050301PR S00 LSA-06-01 LEGEND:
Sample Locations D Land Survey Area C] LSA-05-03
[] Property Boundary OI] Fonner Building Footprint 0
Road Parking Area Fence
- ca Gate Location 0
20 40 Feet FSS Sampling Locations LSA-05-03 Requested By.
M. Bresnahan Document/Reason:
Final Status Survey Hematite Decommissioning Project Jefferson County Hematite, MO Prepared By:
Rev:
DJH 0
Size:
8.Sxll Date:
08-15-13