ML18199A140
| ML18199A140 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 05/15/2017 |
| From: | Pallagi K Westinghouse |
| To: | Gregory Chapman Division of Decommissioning, Uranium Recovery and Waste Programs |
| G CHAPMAN NMSS DUWP | |
| Shared Package | |
| ML18199A128 | List: |
| References | |
| HEM-17-35 | |
| Download: ML18199A140 (25) | |
Text
LSA 03-01, 912512015 Page P-l of8 HDP-PR-X'SS-701, Final Status Survey Plan Development @evision 8)
APPENDIX P-3 FSS PLAN Survey Area: LSA 03
==
Description:==
Plant Soils West Ooen Land Area Survey Unit: 01
==
Description:==
West Open Land Area ("Area 5")
Overview: The Survey Unit (SU) identified as LSA 03-01 has been prepared for Final Status Survey (FSS) by the Hematite Decommissioning Project (HDP). This appendix provides an overview of the proposed FSS implementation as well as general and specific instructions for the technicians responsible for performing the FSS.
o Data Quality Objectives
- l. Personnel performing FSS duties meet the qualifications listed in HDP-PR-HP-102, Health Physics Technician Training and have received training and instruction commensurate with their duties. The RSO has approved all FSS personnel to perform work associated with their individual roles and responsibilities. Training records are documented in accordance with HDP-PR-GM-020, Training Material Development and Documentation of Training.
- 2. All HDP FSS procedures ("700 series") have been reviewed, revised, and validated in order to ensure performance of actual FSS work activities reflect the requirements detailed in the individual FSS Procedures and the HDP Decommissioning Plan.
- 3. All FSS instrumentation has undergone a receipt inspection by HDP QA personnel, is within current calibration, and is determined to be functioning within acceptable ranges based on initial set-up and daily source checks in accordance with HDP-PR-HP-4I1, Radiological Instrumentation. Prior to field use, HP technicians will confirm that environmental conditions (e.g. operating temperature range, no standing water) are acceptable for use of FSS instrumentation.
o Location LSA 03-01 is designated Class 3 and represents the open land area between the Site Pond and State Road P. This SU is located within the Plant Soil Surrogate Evaluation Area (SEA), therefore the Plant SEA DCGLs were used only for Scan MDC calculations where the inferred Tc-99 DCGL for U-235 is 2.5 pCtlg. The surrogate DCGL for U-235 was used for the calculation of Scan MDC only. Laboratory analysis for Tc-99 will be performed on all final status survey samples and as such, the adjusted U-235 DCGL values will not be used to demonstrate compliance with the final status survey dose criteria. The two-dimensional areal extent of LSA 03-01 is 10,540 m2. This area is less than that described in Table 14-16 (10,879 m2) because 339 m2 adjacent to the southwest boundary of the Site Pond was separated into a new Class 2 LSA 03-02. The soil sampling locations within the SU were randomly determined. Since this is an undisturbed SU, the interior surface area (three-dimensional) is not needed for the purposes of sidewall sampling requirements.
o Background The West Open Land Area between the Site Pond and State Road P (LSA 03) was designated a Quality Record Westinghouse Non-Proprietary Class 3 HDP Satellite Site View: Area 5 in Red Outline; LSA 0341 in Red Crosshatching
LSA 03-01, 912512015 Page P-2 of8 HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 8)
APPENDIX P-3 FSS PLA}[
Class 3 area as described in the Hematite Radiological Characterization Report and the DP. After issuance of the DP and the subsequent Request for Additional Information (RAI) process, a flood event prompted HDP to conservatively upgrade a 339 m2 section adjacent to the southwest edge of the Site Pond and northwest edge of the northern section of the Site Creek-this new Class 2 SU was designated LSA 03-02.
No restoration is planned for this SU; therefore the current grade will be the final as-left grade.
LSA 03-01 was subject to final Remedial Action Support Surveys (RASS) during June 2015. RASS included a minimum 10o/o gamma walkover survey (GWS) and systematic sampling. Since this LSA is a Class 3 SU already surrounded by the site perimeter fence and the existing Isolation and Control (l & C) postings for the Site Pond, additional I & C measures are not necessary and will not be installed.
Since LSA 03 was Nuclear Criticality Safety (NCS) exempt, no NCS borings were performed.
o Criteria All FSS analytical results for samples collected within LSA 03-01 will be evaluated against the Uniform Stratum DCGLs. FSS sampling is implemented using the Three-Layer CSM, however analytical results will be conservatively evaluated using the Uniform Stratum DCGLs. Three-Layer CSM DCGLs may be utilized for FSS data evaluation if necessary.
Radionuclide ii-'{I i.r'- i.'ii ii-+,;':s ; {rgl-.,,j:.r l' Uniform Stratum (oCi/s) i'a i r,i:1 a:8".-r i t! lrl Radium-226+C' i'1 195.4 Technetium-99 s1.6 Thorium-232+C" 168.8 Uran um-234 25.t Uran um-235+D" 2.0 Uran um-238+Dc 1.9 Table adapted from I'IDP FSS Procedure HDP-PR-FSS-70 Final Slotus Survey Plan Developmenr, Rev 20 adapted Survey Plan Developmenl 8, August b The reported DCGL*s are the activities fbr the parent radionuclide as specilied and were calculated to account fbr the dose contribution from insignifi cant radionuclides.
"+D indicates the DCGL* includes short-lived (half-life < 6 mo.) decay products.
d +C indicates the DCGL* includes all radionuclides rr the associated decay chain.
o Implementation As a Class 3 SU, LSA 03-01 will undergo a minimum l0%o gamma walkover survey (GWS) using an uncollimated 2" x 2" sodium iodide (NaI) detector. The GWS within the SU should be judgmentally targeted toward the eastern edges of the SU near the boundary with the adjacent Class I Site Pond SUs.
Based on a statistical evaluation of the RASS dataset, an eight (8) point sampling plan was developed for LSA 03-01. All locations were randomly selected. Eight (8) surface stratum, eight (8) root stratum composite, and eight (8) excavation stratum samples will be taken at the eight random sample locations. However, the excavation stratum samples will be archived and analyzed only if the overlying root stratum sample at a given location exceeds a SOF of 0.5.
Consideration of residual Tc-99 "hot spots": As is expected for a Class 3 SU, previous soil and sediment characterization data collected prior to FSS indicate that residual radioactivity concentrations in the West Open Land Area, or LSA 03 (in which LSA 03-01 is located), are well Quality Record Westinghouse Non-Proprietary Class 3
LSA 03-01, 912512015 Page P-3 of8 HDP-PR-X'SS-701, X'inal Status Survey Plan Development @evision 8)
below the DCGLs for all samples (Hematite Radiological Characterization Report (HRCR),
Westinghouse 2009). Therefore, there is little potential for areas of residual Tc-99 activity, and the eight (8)-point random sampling pattern is appropriate.
A minimum of one biased sample will be collected at the maximum GWS measurement within the SU. Biased samples may also be collected during GWS at the discretion of the HP Technician, after a statistical review (e.g. greater than 3o above mean) of the entire GWS dataset, or at the discretion ofthe FSS Supervisor.
A minimum of one QC duplicate per SU (or 5Yo of the total number of samples) will be collected.
Since the total number of samples is expected to exceed 20, two QC duplicate samples will be collected within LSA 03-01.
Supplemental Sidewall Sampling: Supplemental sidewall sampling is not applicable since this is an undisturbed, unremediated Class 3 SU.
Quality Record Westinghouse Non-Proprietary Class 3
LSA 03-01, 9t25/2015 Page P-4 of 8 HDP-PR-F'SS-701, Final Status Survey PIan Development (Revision 8)
APPENDIX P.3 FSS PLAI\\
FSS IMPLEMENTATION
SUMMARY
TABLE Gamma Walkover Survey (GWS):
Scan Coverage Minimum 10% of LSA 03-01 total area Scan MDC 38.8 pCi/g total Uranium;0.82 pCi/g Th-232;1.14 pCrlgRa-226 (based on a 9,000 com backsround)*
Investieation Action Level flAL) 1,624 net cpm **
Svstematic Samnlins Locations:
Depth Number of Samole Comments These samples will be taken on a systematic grid. ***Excavation stratum samples will be collected and archived, but will be analyzed only in the event the overlying root stratum samole exceeds a SOF of 0.5 0 - 15 cm (Surface) 8 l5 cm - 1.5 m (Root) 8
> 1.5m (Excavation) 8* 1.t Biased Survev/Sam plins Locations:
Collect a minimum of one biased sample at the maximum GWS measurement within the SU.
Biased samples may be collected during GWS at the discretion of the HP Technician, after statistical analysis ofthe survey data, or at the direction ofthe FSS Supervisor.
Sidewall Samplins Locations:
Supplemental Sidewall Sampling: Not applicable; SU is an undisturbed (unremediated) Class 3 area.
lnstrumentation:
Ludlum 2221 with 44-10 (2x2 NaI) detector Used for GWS and to obtain static count rates at biased measurement locations.
- Values based on information provided in HDP-TBD-FSS-002, "Evaluation and Documentation of the Scanning Minimum Detectable Concentrations (MDC) for Final Status Surveys (FSS).
The Scan MDC for total Uranium reflects a conservative assumption of 4%o enrichment. The actual RASS enrichment (1.6%) would result in Scan MDC values slightly less than those calculated for FSS plannins pumoses.
- IAI is the net count per minute (ncpm) equivalent of an activity concentration less than the Uniform Stratum DCGLry derived from the technical bases presented in HEM-MEMO-I5-021 and HDP-TBD-FSS-003 "Modeling and Calculation of Investigative Action Levels for Final Status Soil Survey Units". Westinghouse, March 2015.
Quality Record Westinghouse Non-Propietary Class 3
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LSA 03-01, 912512015 Page P-5 of8 HDP-PR-FSS-701, Final Status Suruey Plan Development (Revision 8)
APPENDIX P-3 FSS PLAII General Instructions:
- l. Summarize daily work activities on the log sheets provided in Appendix P-6. Provide a description of site conditions, samples collected and the status of gamma walkover surveys for every shift that involves work in this survey unit. Document the surveyor name and instrumentation used for each GWS event (i.e., data file) in Appendix P-6 for reporting traceability. 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 instructions shall be approved by the RSO before continuing work and be documented in the FSS Field Log.
In accordance with HDP-PR-FSS-701, Final Status Survey Plan Development (Sec. 8.4.2),
documentation of activities performed, equipment used, and 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.
Since this LSA is a Class 3 SU already surrounded by the site perimeter fence and the existing Isolation and Control (I & C) postings for the Site Pond, additional I & C measures are not necessary and will not be installed.
Perform daily pre and post QC source checks in accordance with HDP-PR-HP-416.
A minimum l0o/o gamma walkover survey (GWS) of the total SU area will be performed using a 2"x2" NaI (Tl) detector. Move the survey probe in a serpentine pattern approximately 6-inches off-set from centerline 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 1.0 feet) 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. Notify the FSS Supervisor 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.
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 the FSS Supervisor to determine specific instructions for performing and documenting gamma walkover surveys.
LSA 03-01 is a Class 3 Survey Unit. Each sample location was randomly determined and has associated GPS coordinates specified. In the case of inaccessible sampling locations, additional sample coordinates may be generated with the FSS Supervisor's and RSO'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.
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 random sample locations will include eight (8) samples taken at a depth of 0 - 15 cm (surface), eight (8) samples collected at a depth of 15 cm - 1.5 m (root), and 8 (eight) samples collected at a depth of 1.5 m to 1.65 m (excavation). The excavation stratum samples will be analyzed only if the overlying root stratum sample in a given location exceeds a SOF of 0.5.
- 10. 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 the FSS Supervisor based on statistical analysis of the survey/sampling data or processftristorical knowledge Quality Record Westinghouse Non-Proprietary Class 3 4.
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LSA 03-01, 912512015 Page P-6 of 8 HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 8)
APPENDIX P.3 FSS PLAI\\
of the area. Biased soil samples will be collected in a manner similar to systematic soil sampling locations. The 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.
- 11. Supplemental Sidewall Sampling: Not applicable to this SU.
- 12. All samples collected as part of this survey will be analyzed at an off-site laboratory by gamma spectroscopy for radium, thorium, and uranium, and ICP-MS for Tc-99.
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/IlP Technician: Veriff each shiftthat isolation controls (not applicable for LSA 03-01), established in accordance with HDP-PR-HP-602 are in place prior to the start of FSS using the Daily Task Briefing log sheet.
- 2. Rad. Engineering/HP Technician: Prior to gamma walkover survey in the area to be surveyed, walk the area looking specifically for any debris material (e.g. asphalt, plastic, concrete, etc.) that may indicate further investigation is 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 is aware of the activity, an Exeavation Permit (X'orm HDP-PR-EHS-021-1) has been performed for the work area, and underground utilities have been identified and marked.
Gamma Walkover Surveys (GWS)
- 1. Establish a general area background, in accordance with HDP-PR-FSS-711. Use this background level in conjunction with the Investigation Action Level (IAL) of 1,624 net counts per minute as a field guide to pause and, if necessary, flag locations for possible biased sampling (see following Steps 2 and 3 below for details).
- 2. Perform a gamma walkover of the survey unit holding the probe as close to the surface as possible (nominally 1", but not to exceed 3"), in accordance with HDP-PR-FSS-711. Preferentially perform GWS in the eastem section of the SU (near the boundary with Class I LSAs 02-01 and 02-02).
- a. Look and/or listen for elevated count rates and then pause to determine locations that exhibit anomalous readings (e.g., 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.
Quality Record Westinghouse Non-Proprietary Class 3
LSA 03-01, 912512015 Page P-7 of8 4.
HDP-PR-FSS-701, Final Status Survey Plan Development (Revision 8)
APPENDIX P-3 FSS PLAN NOTE: If field conditions limit the ability to perform contact readings, collect readings as close as practical. Contact the FSS Supervisor (or Radiological Engineering) regarding the issue for each location. The FSS Technician, FSS 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.
GPS (and associated data logger) is the preferred method for performing GWS.
When a GPS and data logger is used, download 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 the FSS Supervisor.
- b. FSS Supervisor: Provide statistical analysis to determine population characteristics of the survey data set and identiff any areas requiring additional surveys or sampling. Contact FSS Technician to mark additional locations requiring survey or sampling.
If a GPS and data logger cannot be used to perform GWS in any portion of this survey unit, the FSS Technician will contact the FSS Supervisor and RSO to determine compensatory survey methods. The FSS Supervisor will log the compensatory methods in the FSS Survey Log.
Download the survey dataat the end of each shift. To minimize data loss, periodically save the GWS data set throughout the shift.
Soil Sampling Collect soil samples in accordance with HDP-PR-FSS-711 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 the FSS Supervisor. Any adjustments to sampling locations will be documented in the FSS Field Log.
Collect a minimum of one duplicate sample for every 20 samples. Two duplicate samples are required for LSA 03-01.
Collect and homogenize the entire volume from the specified depth interval prior to containerizing the sample. Vegetation and native debris/rocks with a diameter greater than 1 inch should be discarded.
NOTE: If a discrete source of radiation (e.9., a fuel pellet) is discovered during the perfiormance of sampling activities, contact the FSS Supervisor who will then notifr the RSO. Pause any additional characteization 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 Building230 Sample Cage via physical turnover to the shift Sample Custodian.
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.
Collect bias samples from the surface to a depth of 6 inches. Collect a minimum of one biased sample at the maximum GWS measurement location.
Monitor the count rates within the depression created by the collection of biased soil samples. Inform the FSS Supervisor of the results obtained at monitored biased sample locations. Depending on the results, subsequent actions may include further investigation or additional remediation.
Obtain and record the count rate on contact with features other than soil within the excavation. (e.g.,
native rock). Record the nature and extent of features other than soil found within the excavation in the l.
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Quality Record Westinghouse Non-Proprietary Class 3
LSA 03-01, 9/2512015 Page P-8 of 8 HDP-PR-FSS-701, X'inal Status Survey Plan Development (Revision 8)
APPENDIX P-3 X'SS PLAN FSS Survey Log and contact the FSS Supervisor to determine additional charactenzation methods, if necessary.
- 8. Submit samples for analysis to TestAmerica following sample chain of custody requirements contained in HDP-PR-QA-006.
Prepared by:
Brian A. Miller (PrintName)
Peer Reviewed by: Ellen C. Jakub Qz-
' (Da/e)
Approved by (RSO):
(PrintName)
W. Clark Evers
?/30//{
(Print Name)
(Date)
Quality Record Westinghouse Non-Proprietary Class 3
Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page I of 10 APPENDIX P.l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS Survey Area: LSA 03 Survey Unit: 01
- 2. Evaluate Final Remedial Action
- a. Number of RASS Samples:
==
Description:==
Plant Area Open Land Area
==
Description:==
Class 3 LSA, west of Site Pond in "Area 5" Support Survey (RASS) Data 8
- 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 Package Development and Isolation and Control Measures to Support Final Status Survey?
(If "No", discontinue survey design until area turnover requirements have been met.)
Yes[ NoE
- b. Record anahtical results and Are all RASS results less, or equal to the appropriate 701?
DCGLry from Appendix A of HDP-PR-FSS-YesX NoE If 'No", have remaining locations of elevated concentration been evaluated? N/AX Yes[ NoE (lf "No", discontinue survey design until investigation is complete.)
Have elevated areas identified by gamma walkover surveys been investigated? N/AX Yesf] NoE (If "No", then terminate survey design and perform additional investigation and repeat the planning process.)
Are the Initial Charucterization and RASS data sufficient to support FSS Design?
Yes[ NoE (If 'No", terminate survey design, perform additional characterization or remediation and repeat the planning process.)
- 3. Define the Survey Unit Classification Write a short description of the survey unit based on historical use and remedial activities:
The LSA 03-01 survey unit (SU) is classified as MARSSIM Class 3. LSA 03-01 is located directly west of the site pond in the western end of the HDP. This SU along with LSA 03-02, LSA 0l-01, LSA 0l-02, LSA 02-01, LSA 02-02, and LSA 02-03 are collectively referred to as "Area 5" for the purposes of remediation planning and work sequencing. Area 5 is primarily a wooded and grassy area. There has been no LSA 03-01,9lt6lt5 d.
e.
results and summary statistics fbr each RASS samnle.
u-234 (pCi/e) u-235 (oCi/s) u-238 (oCi/s)
Tc-99 (pCi/s)
Th-232 (pCi/g)
Ra-226 (oCi/s.\\
Minimum 1.262 0.065 0.8s6 0.017 0.010 O (<BKG)
Maximum 4.614 0.2s3 1.780 0.1 05 0.250 O (<BKG)
Mean 2.392 0.126 t.291 0.064 0.083 0 (<BKG)
Median 2.278 0.122 t.300 0.058 0.040 O (<BKG)
Standard Deviation 0.984 0.056 0.322 0.032 0.088 0 (<BKG)
- of Samoles 8
8 8
8 8
8
Hematite Decommissioning Project Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page 2 of 10 documented evidence of any comprising Area 5.
Classification: 3 Not Excavated. PavedlPartially Paved or Excavated but not Backfilled:
X Surface Soil (<15cm) Samples.
radioactive materials being stored, buried, or handled within the LSAs Survey Unit Area 1m2;: 10,540 APPENDIX P-I FINAL STATUS SURVEY SAMPLING PLAI\\ DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS
- a. Has the Classification changed from the Initial Classification as indicated in DP Ch. 14 Table 14-16 and Figures 14-14 through 14-17?
Yes[ NoX (If "Yes", then include a copy of Appendix P-5, Survey Unit Classification Change Form.)
- b. ls the Survey Unit area less than the maximum size for the Classification? YesX NoE (lf "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 f]
Burial Pit SEA E
- 5. Define Final Survey Unit Conditions X No Excavations, Paved/Partially Paved or Excavated but not Backfilled f
Excavated and to be Backfilled f
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 and extends 15 cm from that point below grade. The lower depth of the Root Stratum 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 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.
Excavated and to be Backfilled:
tr Surface Soil Samples taken from any remaining surface soil Stratum and Root Stratum Soil Samples taken at the same locations as Surface Samples, composited over the entire root stratum.
[l Root Stratum Soil Samples composited from f Root Stratum Soil Samples composited from l5cmto 1.5m.
exposed grade to 1.5m and Deep Stratum Soil Samples taken at the same locations as Root Samples of the top l5cm of the Deep Stratum.
LSA 03-01, 9t16n5
Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Revision: 8 Appendix P-1, Page 3 of 10 Westinghouse Non-Proprietary Class 3 APPENDIX P.l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOI SURVEY UNITS X Deep Stratum Soil Samples ofthetop 15 cm tr Deep Stratum Soil Samples of the top 15 cm of the of the Deep Stratum. (Analyzed if the Root exposed Deep Stratum.
Stratum sample SOF > 0.5.)
Note: If the SOF of the Root Stratum sample exceeds 0.5, a composite sample is collected from 1.5 meters to an appropriate depth (Deep Stratum).
Excavated and Backfilled tr 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.
- 7. Define Derived Concentration Guideline Levels (DCGL)
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 o'Measure Tc-99" DCGLs 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.
- 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 Altematively, 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 approach presented in Step 8.2.5 of HDP-PR-FSS-701 may be used for determining the mean SOF and LSA 03-01,91t6115 Surface Stratum
, (oCils)
Root Stratum
,.'(nei/e)
Deep Stratum'
,(oCi/s)
Uniform
..{oei/p) u-234 t
195.4 u-235 51.6 u-238 168.8 Tc-99 25.1 Th-232+ C 2.0 Ra-226 + C 1.9
- l. The Deep Stratum DCGLs correspond to the Excavation Scenario DCGL from Appendix A of HDP-PR-FSS-701.
Hematite Decommissioning Project Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page 4 of l0 APPENDIX P-l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS weighted standard deviation that accounts for the reduced dose from the deeper surface, i.e., by weighting the Root Stratum and Excavation DCGLw values.
o The values used in determining the following (SOFn,"un and os6p) can be found in the tables from Section 2b and Section 7.
- a. Determine a mean SOF for the characterization/RASS survey data set using the equation from Step 8.2.5a of HDP-PR-FS S-701.
Lower Bound of the Grey Region (LBGR) : SOFyr*:0.07
- b. Determine the weighted standard deviation in the SOF for the characterization/RASS survey data set using the equation from Step 8.2.5b of HDP-PR-FSS-701.
Note: For the determination of SOFrr,r.- and osor, include the concentration for Tc-99 if it was measured.
If Tc-99 was not measured, include the modifiedu-z3s DCGL and omit Tc-99 concentration term.
/ Larger of the two used in worksheet survey design Survey Unit osor =
0.04 f]
Background osop:
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 concuffence.
- d. Determine the Relative Shift using the equation in Step 8.2.5d of HDP-PR-FSS-701.
Relative Shift:
6.6*
- Spreadsheet value may differ from hand-calculated results due to
- e. Is the Relative Shift between, #!;ot"'
yes! NoX o 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 to accomplish this, the LBGR may be set as low as the MDC for the analytical technique.
Adjusted LBGR: 0.58 Adjusted Relative Shift = 3.0
- f. Determine the Number of Samples (N/2) required corresponding to the Type I error, Type II Error and the Relative Shift from Appendix F or calculate using equation 5-1 from MARSSIM.
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 LSA 03-0t,9/t6/75
Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page 5 of l0 APPENDIX P-l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS enrichment to 0.72%o (natural uranium).
o When U-235 is reported as positive and U-238 is reported as negative or zero) set the sample enrichment to l00Yo (highly enriched).
o When both U-235 and U-238 data are reported as positive, determine the U-238fu-235 ratio for each sample and use Appendix G of HDP-PR-FSS-701, to determine the uranium enrichment that corresponds to the meanU-238:U-235 ratio.
- a. Record the average Uranium enrichment for the survey unit using the enrichment determined for each individual sample.
Average Enrichment (%): 1.6 Note: The Activity Fractions (,f ) for each radionuclide coffesponding to the mean enrichment used 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, root &
deep), then the most conservative DCGLs should be used in the following calculation.
- b. Determine a DCGLw for Total Uranium using the equation from Step 8.2.6b of HDP-PR-FSS-701.
DCGL'iruo1r, for Total Uranium :
54.1 pCilg
- c. Identify the Radiological Instrument that will be used for scanning.
X 2"x2" NaI Detector tr FIDLER NaI Detector tr Other
- d. Determine the Scan MDC for the selected instrument using the equation in Step 8.2.6d of HDP-PR-FSS-701 or the calculations presented in the Open Land Area Gamma Scan MDCs section in Chapter 14 of the DP.
MDC'"* for Total Uranium:
38.8 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 DCGL*: 2.0 pCilg Ra-226 DCGLyy: 1.9 pCilg 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 altemate approach 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,"un of 0.87 pCtlg for Th-232 and l.2l pCi/g for Ra-226 when 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,"-.
LSA 03-01,9116115
Hematite Decommissioning Project Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page 6 of 10 APPENDIX P.l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CIIECKLIST FOR SOIL SURVEY UNITS Note: If the selected instrument is not a 2"x 2" NaI detector, then the MDCscan can be determined in accordance with the Open Land Area Gamma Scan MDCs section in DP Ch.14.
MDCsca,., for Th-232 : 0.82 pCilg MDCr.un for Ra-226 : l.l4 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 DCGLw that was determined for Total Uranium? (compare values from Step 9b and 9d)
Yes[l Non Class 2 and 3 survey units - If "Yes", then proceed to Step 12, if 'No", then contact the RSO for direction as to changing parameters for scanning such as scanning speed, detector distance, different 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 (Irl/2) determined in Step 8f to determine the area bounded by the statistical sample population.
Area Bounded by the Statistical Sample Population (Asu) = NA m'
- c. Was the Scan MDC for the selected instrument less than the DCGLw that was determined for Total Uranium in Step 11.a?
NAX Yes[ Nof]
(If "Yes", then proceed to Step 12, if "No", then proceed to the next step).
- d. Using the Area Factors in Appendix H of HDP-PR-FSS-701 and using the equation from Step 8.2.8d of HDP-PR-FSS-701, determine a Total Uranium AF for each listed area using the Activity Fractions (fl for each radionuclide that corresponds to the mean enrichment from Appendix G of HDP-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 (AF1o6g) determined in the previous step that corresponds to the area bounded by the statistical sample population (Asu).
AFrotu for the Bounded Area (Asu) : NA
- f. Multiply the DCGLw determined for Total Uranium by the Area Factor (AF1o1u) to derive a DCGLe1ac for Total Uranium.
LSA 03-01, 9n6/t5 Area (m')
153,375 10,000 3,000 1,000 300 100 30 10 J
I AFrotatu NA NA NA NA NA NA NA NA NA NA
Hematite Decommissioning Project Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-I, Page 7 of l0 FrNAL srArus suRvEy s"***l[E#i* ilJur"o*MENr cHECKLrsr FoR SOIL SURYEY UNITS DCGLsrrac for Total Uranium : NA pCilg
- g. Is the MDC."an for the selected instrument less than the DCGLsrrac that was determined for Total Uranium?
NAX YesE Nof]
(If "Yes", then proceed to Step I lk, if "No", then proceed to the next step.)
- h. Determine a new AF (AFer.,,1c) corresponding to the MDC,"., for the selected instrument by dividing the MDC,can by the DCGLy.
AFsuc for U1o61 : NA
- i.
Find the Area (A') that corresponds to the Area Factor (AFsMs).
A' for IJ1o6 : NA
- j.
Determine an Adjusted Number of Samples (NEr,ac) for the statistical sample population size that corresponds to the bounded As1y16 using the equation from Step 8.2.7j of HDP-PR-FSS-701.
Nsy6 Coffesponding to A' for U1661 : NA TECHNETIUM (Tc-99)
- k. Determine if the maximum reasonable result for Tc-99 from previous Characterization or RASS remaining within the area is greater than the DCGLw for the appropriate CSM and SEA?
N/AX YesE NoE (If 'oNo", then proceed to Step 12, if ooYes", then proceed to the next step.)
- l.
Determine the area per sample station needed to account for potential Tc-99 hotspots by dividing the highest Tc-99 result obtained by the Tc-99 DCGLw for the appropriate CSM and compare that value to the Area Factor Tables in Appendix H.
A' for potential Tc-99 hotspots : NA
- m. Determine the number of samples needed by dividing the Asg by the A' for potential Tc-99 hotspots determined in Step I ll.
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 Npy6 from Step 1lj, or N corresponding to A' for potential Tc-99 hotspots from Step I lm.
N/2, N6y6[max], or N corresponding to the potential Tc-99 hotspot : 8
- b. Is the Survey Unit a Class 3 Survey Unit?
Yesffi NoE (lf "Yes", then continue to Step 13, if 'oNo", then proceed to the next step).
LSA 03-01,9116115
Hematite Decommissioning Project Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page 8 of 10 APPENDIX P-l rINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS
- c. Determine Grid Spacing (L) using the equation from Step 8.2.9 of HDP-PR-FSS-701.
Grid Spacing (L) for Survey Unit:
NA m
- 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 8.2.10 of HDP-PR-FSS-701.
- 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 & Measurement Locations & 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.
- 14. QC, Biased & Discretionary Samples
- a. Randomly choose 5Yo of the statistical sample population as QC samples in accordance with HDP-PR-FSS-703, Final Status Survey Quality Control.
& Measurement Locations & Coordinates.
- c. Designate if any biased samples will be taken at the discretion of the HP Staff designing the survey and the basis for taking them. Necessary biased samples will be explained on Appendix P-3, F,S,S 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, FSS Sample &
Measurement Locations & Coordinates.
- f. Include discretionary sidewall samples as applicable using guidance in Step 8.2.11. Are discretionary sidewall samples required?
N/AE Yes[ NoX (If "No", then proceed to Step 15, if "Yes", then proceed to the next step.)
- g. Determine the number of samples to be collected based on the sidewall surface area compared to the two dimensional systematic surface area.
Number of discretionary sidewall samples = 0 (maximum); may be reduced with FSS Supervisor approval if the actual sidewall surface area is significantly less than the CAD-calculated theoretical maximum.
LSA 03-01, 9lt6lt5
Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Decommissioning Project Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-I, Page 9 of l0 APPENDIX P.l FINAL STATUS SURVEY SAMPLING PLAN DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS
- h. Any discretionary sidewall samples will be taken at randomly chosen location(s) of the sidewall(s) (i.e.,
not based on radiological scans) selected atthe discretion of the Health Physics Technician performing soil sampling. Necessary sidewall samples will be explained on Appendix P-3, FSS Sampling Plan.
- 15. Scan Coverage
- a. The Survey Unit is:
I class 1
! Class 2 X Class 3
- b. Based on the Survey Unit Classification, the scan coverage in this Survey Unit is; tr 100% Scan Coverage of Exposed Soil X tOX Judgmental Scan Coverage of Exposed Soil
- c. Designate any specific scan locations, as determined necessary, on Appendix P-3, FSS Sampling Plon.
- 16. Investigation Levels
- a. The Survey Unit is: [l Class 3
- 1) Scan Investigation Levels are set at:
1,624 net cpm
- 2) Sample Investigation Levels are set at 50%o of the DCGLry when expressed as the SOF.
- b. The Survey Unit is: I Class 2 l) Scan Investigation Levels are set at: NA cpm
- 2) Sample Investigation Levels are set at the DCGLyT when expressed as the SOF.
- c. The Survey Unit is: f, Class I l) Scan Investigation Levels are set at: NA cpm
- 2) Sample Investigation Levels are set at the DCGLw when expressed as the SOF.
- 17. Attachments Attach a copy of completed forms as appropriate:
Appendix P-3, F^S^S Survey Sampling Plan, Appendix P-4, F^S,S Sample & Measurement Locations & Coordinates Appendix P-5, F,S,S Unit Classification Change Form Appendix P-6, FS',S Field Log Survey Unit Figure Other:
LSA 03-01, 9t16/15
Hematite I Procedure: HDP-PR-FSS-701, Final Status Survey Plan Development Westinghouse Non-Proprietary Class 3 Revision: 8 Appendix P-1, Page l0 of 10 APPENDIX P.l FINAL STATUS SURVEY SAMPLING PLAI\\ DEVELOPMENT CHECKLIST FOR SOIL SURVEY UNITS
- 18. FSSP Development Checklist Approval Prepared by:
Peer Reviewed by:
Approved by (RSO):
Ellen C. Jakub (Print Name)
Brian A. Miller (Print Name)
W. Clark Evers (Print Name) 7^*lkhL (Signature) t,'&A-4so/r5 (Signature)
(Date) sul t5 (Date)
LSA 03-01,9lt6lt5
HDP-PR-FSS-701 Final Sfatus Suruey Plan Development Appendix P-l Step 8. Determine the Number of Samples in the Statistical Survey Population MARSSIM Table 5.1 Na Pr 0.'l o.528182 0.2 0.556223 0.3 0.583985 0.4 0.51 1335 0.5 0_638't43 0.6 0.6M290 0.7 0.689665 0.8 o.714167 0.9 0.737710 0
0.760217 1
0.781627
,2 0.801892 3
0.820978
.4 0-838864 5
0.855541 6
0.871014 7
0.885299 I
0.898420 I
0.9104't3 2.O 0.921319 2.25 0.944167 2.5 0.96t428 2.75 0.974067 3.0 0.983039 3.5 0.993329 4.0 0.997658 4.01 1.000000 MARSSIM Table 5.2, a = 0.05, p = 0.10 c (or p)
Z1n(or Zlal 0.005 2.576 0.01 2.326 0.015 2.241 0.025 1.960 1.645 1.282 0.15 1.036 0.2 0.842 0.25 0.674 0.30 0.524 HDP LSA 03-01 FSSPD P-1 P-4 Worksheets.xls/P-'t Step 8 Sample Size 9t25t2015 able 5.1 (P,)
"N/2" Corresponds to the number of survey unit measurement locations of Rel. Shift = 3 for Rel. Shift >3 above MARSSIM Table 5.1 (P,)
"N/2" Corresponds to the number of survey unit measurement locations Page 1 of '1
HDP-PR-FSS-701 Final Stafus Survey Plan Development Appendix P-l Step 11. Adjust the Statistical Sample Population Size (N/2) for Scan MDC SU Area 10,540 m2 (Appendix P-1 Step 3)
Samples Required 8
P-1 Step 11.a. lf SU is Class 2 or Class 3, proceed no further.
Class 3 SU HDP LSA 03-01 FSSPD P-1 P-4 Worksheets.xlsx/P-1 Step 11 Sample Adjust Scan 9t25t2015 Page 1 of 1
Procedure: HDP-PR-FSS-70 1. Final Status Westinghouse Non-Proprietary Class 3 Appendix P-4, Page I of I APPENDIX P.4 FSS SAMPLE & MEASUREMENT LOCATIONS & COORDINATES Survey Area:
Survey Unit:
Survey Type:
LSA 03
==
Description:==
==
Description:==
Classification:
Plant Open Land Area 01 West of Site Pond in 'Area 5" FSS Class 3 Elevations are in feet above mean sea level.
+ Missouri - East State Plane Coordinates [North American Datum (NAD) 1983] (Open Land Area) OR in feet from lower Ieft comer of the surface (Structures); each surf'ace has it's own (X,Y) = (0,0): OR Sanrples highlightcd in red will be collcclcd and archived: racliological analyscs perlirrnred oulf il'overli ing root samplc has a SOI: >0.-5.
piping the distance from the beginning ofthe survey unit
- Floor: F; Wall: W; Ceiling = 6 Roof = R M: Three-Layer (Surface-Root-Deep) or Unifbrm Systematic = S, Biased: B; QC =Q; Investigation = I Record L03-0 1-0 1-P-S-S-00 L03-0 I P-R-S-00 IJnilbrnr l-03-0 I P-i::-S-0i)
Excavation 6-inch L03-01 P-S-S-00 L03-01-05-P-R-S-00 L-03-0 I l'-E-S-00 8266 1 7 L.lnilbmr Excavation 6-inch L03-0 l P-s-s-00 L03-0 1 P-R-S-00 L03-0 l P-E-S-00
[:.xcavation 6-inch L03-01 P-S-S-00 L03-01-11-P-R-S-00 L03-01-12-P-E-S-00 tt26534 Lxcavaliorr 6-inch L03-01 -l 3-P-s-s-00 r_03-0t P-E-S-00 Ilrcar' ation 6-inch srah L03-01-l 6-P-S-S-00 L03-0 1 - l 7-P-R-S-00 r-0-3-0 t-I 8-P-E-S-00 t-lnifbnn
[:rcavalion 6-inch grab L03-01-t 9-P-S-S-00 r.03-0l-2t-P-Fi-s-00 Excavation 6-inch L03-0 l P-S-S-00 L03-01 P-R-S-00 L0 l-0 I l)-l:-S-00 Excavation 6-inch grab L03-01-01-P-s
LSA 03-103-01-07 103-01-08-P 103-01-09-P-103-0 0 37.5 75 150 and LO3-O1-22-P-S-S-o0 103-01-23-P-R-S-00 103-01-24-P-E-S-00 o
103-01 103-01 LSA 03-0,1 o 103-0 10,540 m2 PlanarArea 103-01-13-P-S-S-00 '
103-01-14-P-R-S-00.
103-01-15-P-E-S-00 o
103-01-10-P-S-S-00 103-01-11-P-R a
1-04-P-S-S-00 1-05-P-R-S-00 1-06-P-E-S-00 1-05-P-R-Q-00 103-01{1-P-5-S40 103-01{2-P-R-S-OO 103{1-04-P-5-5{O LO3{1-05-P-R-S-00 LO3{1{)7-P-S-SOO LO3{1{8-P-R-S{O LO3{1-O9-P-E-S-OO 103.{)1-11-P-R-S-OO LO3-01-12-P-E-S-00 10341-15-P-E-$OO 103{t-17-P-R-H0 10341-19-P-S-S40 103{1-20-P-R-S-OO 103-01-01-P-S-q-OO
HDP-PR-FSS-701 Final Stafus Suruey Plan Development Appendix P-l Step 2. Evaluate Final RASS Data o
g CL EG alt oi
.q dFo Eo 6=
toE TestAmerica Analvtical Results R -226 Tc.99 Th-2:fi1 U-23{ {lnferedl u-235 u-238
.ET'"
g3oo G
oota oo-o E63cl ttoG d
to o=
oo ao Eo o=
oo
.g6to (J
oo3 o
6
- l6o E
ooc IJo
!5 o
G 3oo u.
o Eo o=
LO od) g:,oo
.sGEoot
()o-o G3d 6o E6tootr oo
=
o
(!
3a oo E
.-cGtooc
(,o
=
!o 6
=ot co EE
.9 L^
"i i!
2095-SS-50605-07-01 s
0.827 33 0.075 NA
-0.073 0.000 0.1 05 0.1 05 0.041 o.210 U
'1.01 0.1 54 0.092 NA 0.010 0.010 2.346 NA NA NA o.121 0.145 0.214 U
1.640 0.557 0.818 NA 1.2 2095-SS-50605-07-02 5
0 814 0
44 0.089 NA
-0.086 0.000 0.085 0.085 0.074 0.226 U
1.03 0.1 67 0.1 23 NA 0.030 0.030 2.296 NA NA NA 0.1 23 0.123 0 182 U
1.'100 0 319 0.825 NA 1.8 2095-SS-50605-07-03 s
0.830
- 0. 2S 0.070 NA
-0.070 0.000 0.058 0.058 0.043 o.214 U
1.15 0.204 0.109 NA 0.1 50 0.1 50 2.261 NA NA NA 0.122 0.1 40 o.248 U
0.950 0.285 0.758 NA 2.0 2095-SS-50605-07-04 S
0.835 0
41 0.085 NA
-0.065 0.000 0.017 0.017 0.016 0.223 U
1.05 0.1 67 0.098 NA 0.050 0.050 1.772 NA NA NA 0.090 o.122 o1a2 U
1.370 0.524 o 744 NA 1.1 2095-SS-50605-07-05 s
0.789 0
36 0,074 NA
-0.'l 1 1 0.000 0.058 0.058 0.007 o.227 U
1.',t4 0.'t 85 0.089 NA 0.1 40 0.1 40 2.549 NA NA NA 0.1 36 0 140 o24 U
1 230 0 580 0 895 NA 1.7 2095-SS-50605-07-06 S
0.708 0
19 0.074 NA
-o.192 0.000 0.054 0.054 0.029 0.236 U
125 0.1 89 0 069 NA 0.250 0.250 2.437 NA NA NA 0.1 01 0 135 0.227 U
1 7AO 0.721 0.852 NA 0.9 2095-SS-50605-07-07 S
0.665 0
07 0.078 NA
-0.235 0.000 0 030 0.030 0 073 o 226 U
'1 0't 0.1 69 0 103 NA 0.010 0.010 4.6',t4 NA NA NA 0.253 0.1 49 0.182 NA 1.400 0.499 0.736 NA 2.4 2095-SS-50605-07-08 e
o.797 0
27 0 063 NA
-0.1 03 0.000 0.1 03 0.1 03 0.033 0.219 U
1r]2 0.1 64 0.1 06 NA 0.020 0.020 1.262 NA NA NA 0.065 0.147 0.219 U
0.856 0.294 0.791 NA 1.2 2094-SS-1 50605-07-01 -ON B
1.252 0
24 0.202 NA 0.352 0.352 0.042 0.042 0.040 0.226 U
1.21 0.226 0.339 NA 0.207 0.207 7.629 NA NA NA 0.235 0.1 50 0.2463s U
o.000 0.000 4.932 U
100.0 Minimum 0.000 0.017 0.010 1.242 0.065 0.856 Maximum 0.000 0.'105 0.250 4.AM 0.253 1.780 Mean 0.000 0.064 0.083 2.392 0.126
't.291
{.8 Median 0.000 0.058 0.o40 2.278 0j22 1.300 C
rP EDE Eb d,'E
>E
<lrJ Standard Deviation 0.000 0.032 0.088 0.s84 0.056 o.322 t{oinErryadh. use Ra226 bks {pCUs} =
0.90 fh232 bl(q (pCYq) r
1.0 NOTES
Gross results in units of pci/g
- Background without ingrowth (0.9 pci/g) subtracted from gross result
- Background (1.0 poi/g) subtracted from gross result (Appendix P-l Step 2.a)
I (Appendix P-1 Step 2.b)
List Min, Max, Mean, Median, Standard Deviation as above.
Max Tc-99 =
0.1 Take extra samples for Tc-99?:
ls the max Tc-99 > DCGL? NO lf NO go no further.
ls SU Class 1? NO lf NO go no further.
If YES:
Tc-99 Max/Tc-gg DCGL =
0.004 Appendix P-1 Step 11.k A'for potential Tc-99 hotspots =
247,776 Appendix P-1 Step 11.1 N with potential Tc-99 hotspots =
I (Average Enrichment = Appendix P-1 Step La)
Unlform Stlatum Nuclide I 53.375 1.OOO 300 too 30
.to 3
1 t-234 1.0 1
1.3
'I 3 40 93 19 6 34 70.5 132.8
'1.0 11 11 11 19 25 33 47 9.6 20.5 1.0
'l 1 13 13 25 36 50 7.2 149 31.6 1.0 1-O t-0 t-o 3,1
,o.3 34.3
{Orrg 3/,-27 1.027 rh-
't0 10 10 10 21 3.0 4.2 6.1 12.9 28.9 10 11 11 11 25 41 61 91 19.3 43.4 lc-yy unfiorm Area lactors AF A
unoer 34.3 30 C)ver 10.3 100 Intemolated 0.0042 247.776 HDP LSA 03-01 FSSPD P-1 P-4 Worksheets.xlsrP-1 Step 2 RASS Data Eval 9t2512015 Page 1 of 2
HDP-PR-FSS-7O1 Final Status Survey Plan Development Appendix P-l Sbp 2. Evaluate Final RASS Data lnfer U234 rooIo 66Rd f
lo
$o t6&E
)
!toN f
co Es
.9 L
IJJ
- e 1 3.55372 19.391 2.34642 1.2 8.943089 1 8.6652 2.29582 1.8 7.786885 1 8_53244 2.260959 2.0 1515447
'19.6001
't.77'1449 1.1 9.0441 1r 1A 74601 2.549466 17 17 62378 20.1657S 2.036745 0.9 5.533597 1 8.23604 4.613718 2.8 1 3.149 19.391 1.262413 1.2 0
32.50272 7.629343 100.0 average enrichment t.5g (Appendix P-1 Step 9.a.)
0.14 ossp (Appendix P-1 Step 8.a)
(Appendix P-1 Step 8.b)
Backgrcund Reference Area Greater of RASS SoF or BKG SoF (Appendix P-1 Step 8.b)
Uniform, h Measured Tc-99 (Appendix P-1 Step 7)
HDP LSA 03-01 FSSPD P-1 P4 Worksheets.xls/P-1 Step 2 RASS Data Eval 912512015 Page 2 ot 2
fu-zrq fu-r.s fu-rsa 0.0331 0.33861 1.0000 HDP-PR-FSS-701 Final Sfafus Suruey Plan Development Appendix P-1 Steps 9. - 10. Determine the Scan MDCs DCGL U-235 (inferred Tc-99)
Plant SEA HDP-TBD-FSS-002, Appendix C Scan MDCs at Various Backoround Levels BKG (cPM)
Ra-226 Th-232 u-234 u-235 u-238 Tot U (4%
Enrich) 4000 0.76 0.55 2314 1.47 19.4 25.9 5000 0.85 0.61 2587 1.64 21.6 29 6000 0.93 0.67 2834 1.80 23.7 31.7 7000 1.01 0.72 3062 1.94 25.6 34.3 8000 1.08 0.77 3273 2.08 27.4 36.6 9000 1.14 0.Ez 3/.71 2.20 29.0 38.8 1 0000 1.21 0.87 3659 2.32 30.6 40.9 1 1000 1.26 0.91 3838 2.43 32.1 42.9 12000 1.32 0.95 4008 2.54 33.5 44.9 1 3000 1.37 0.99 4172 2.65 34.9 49.7 14000 1.43 1.02 4330 2.75 36.2 48.5 15000 1.48 1.06 4482 2.84 37.5 50.2 Assumes surveyor efficiency of 0.75, observation interval = 1.64 sec, and air qaD of 2".
(Step 9.b.)
P-1 (Step 9.c.)
(Step 9.d.)
(Step 10)
Select lnstrument 2" x 2" Nal SU Background =
9,000 cpm Scan MDC (Tot U).f pCilg Scan MDC (Th-232)*.
HDP LSA 03-01 FSSPD P-1 P4 Worksheets.xlsx/P-1 Steps 9-10 Scan MDCs 9t25t2015 Page 1 of 1