ML022410195
| ML022410195 | |
| Person / Time | |
|---|---|
| Site: | Saxton File:GPU Nuclear icon.png |
| Issue date: | 08/20/2002 |
| From: | Kuehn G GPU Nuclear |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| -nr, E910-02-039 | |
| Download: ML022410195 (9) | |
Text
GPU Nuclear, Inc Three Mile Island NUCLER Nuclear Station NUCLEAR Route 441 South Post Office Box 480 Middletown, PA 17057-0480 Tel 717-948-8461 August 20, 2002 E910-02-039 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Gentlemen,
Subject:
Saxton Nuclear Experimental Corporation (SNEC)
Operating License No., DPR-4 Docket No. 50-146 Submittal of Information to NRC in July 31, 2002 Meeting On July 31, 2002, a meeting between NRC and GPU Nuclear, Inc was held in Rockvllle, MD. The purpose of the meeting was to discuss dose modeling technical issues from the review of SNEC's License Termination Plan (LTP). The purpose of this letter is to summarize what information was provided to you at this meeting. Also, per your request, additional information is being provided to you via this cover letter. This information is described as follows:
Reference NRC Letter dated July 17, 2002, Subject. "Forthcoming Public Meeting - Saxton Nuclear Experimental Facility".
During the July 31, 2002 meeting, GPU Nuclear, Inc. provided the following to the NRC:
- 1. Four 2-set CD ROM copies of SNEC Subsurface Dose Model files. These replace CDs previously provided to the NRC in the 4/8/02 meeting.
- 2. Four CD ROM copies of SNEC Surface Dose Model files. These replace CDs previously provided to the NRC in the 4/8/02 meeting
- 3. One hard copy of the Surface Model book containing:
+ SNEC Calc. E900-01-030, Rev. 3, "SNEC Radionuclide List," dated July 29, 2002 (two copies).
+ DCGL Lists
+ Sensitive Parameter Tables
+ Sensitive Parameter Statistic Reports
+ Base Inputs ANL Derived Kds.
- 4. Two hard copies of the Subsurface Model book containing:
+ DCGL Lists
+ Sensitive Parameter Tables
+ Sensitive Parameter Statistic Reports
+ Base Inputs
Submittal of Information to NRC in July 31, 2002 Meeting E910-02-039 August 20, 2002 Page 2 of 2
- 5. Radiological results of SNEC groundwater samples taken with ORISE duplicates.
- 6. PowerPoint presentation on dose modeling issues.
In addition to the above, the following information is being provided to you:
- 1. Two (2) CD ROM copies containing dose modeling files. Beside subsurface drinking water, NRC requested that consideration be made on dose impacts from other pathways, if water was brought to the surface via irrigation. These files provide the all pathways subsurface dose analysis results for bedrock, SSGS undisturbed backfill and spray pond undisturbed overburden.
- 2. Table of unresolved RAI issues requiring discussion and resolution. These will be discussed in the next NRC meeting scheduled for August 29, 2002.
- 3. A copy of revised table titled "Comparison of Proposed DCGL Values with Other Miscellaneous Values." This table needs to be inserted into the hard copy Surface Model Book. The reason this table was revised was due to a transcription error from the URS subsurface computer model results to the table. This error incorrectly stated the 25 mrem/yr DCGL result for Pu-238.
If you have any questions on this information, please contact Mr. James Byrne at (717) 948-8461.
Sincerely, eG.eA ueh n Program Director, SNEC cc: NRC Project Manager NRC Project Scientist, Region 1
SNEC LTP RAI Status NRC Ref Q#
Topic GPU NRC LTP LTP Rev 1 Status
Response
Accept Section Updated?
Letter# I Date Letter Date (YIN)
RAI1 1
10CFR 50 75 records E910-00-0016 1/17/01 2.1.1 Y
08/18/00 9/18/00 2
Use of NIST traceable sources E910-00-0016 1/17/01 2.1.2 Y
9/18/00 3a Update Rad Inventory E910-00-0016 1/17/01 2.2.1; T2-1 Y
9/18/00 3b Update project dose E910-00-0016 1/17/01 T3-1 Y
Updated further in LTP Revl & ER 9118/00 3c Update RW projections E910-00-0016 1/17/01 T3-2 Y
Updated further in LTP Revl & ER 9118/00 4
DSF & soil beneath DSF E910-01-013 2.24 1.2 Y
characterization/classrfication 7/2/01 T2-6 5
SSGS Discharge Tunnel E910-01-016 224.1 4 Y
characterizationlclassification 9/4/01 6
CV Soil E910-02-003 224.2 N
Carned over into RAI3 QI.
characterization/classification 1/24/02 T2-15 7
Gamma logging E910-01-013 11/2/01 224.2/3 Y
Carried over into RAI3 Q2 7/2/01 T2-16 8
Pavements E910-01-013 2.24 3 Y
characterization/classification 7/2/01 T2-28 9
Monitoring wells 2 2 4 5 2 2.4 5 Y
Carried over into RAI3 Q3 10 Justify site E910-00-0016 1/17/01 26 Y
characterization/classification 9/18/00 11 Clarify radionuclides of E910-00-0016 T2-5 Nuclide List Calc under NRC concern 9/18/00 review 12 CV saddle E910-02-003 4 3 4 N
characterization/classification 1/24/02 13 SSGS Sump E910-01-016 44 Y
characterization/classification 9/4101 14 Radionuclide inventory Ni-E910-00-0016 5 2 1 Y/N Nuclide List Calc under NRC 63/H-3 9/18/00 review 15 Listing of Rad Instruments E910-00-0016 11/2/01 T5-9/10 Y
Carried over into RAI3 Q4 9/18/00 16 Use of surrogate & gross E910-00-0016 1/17/01 5.232.1 Y
activity DCGLs 9118/00 5 2 323 5 2.3.2 4 17 Exposure rate measurements E910-00-0016 1/17/01 523.24 Y
DQO 9/18/00 18 Northeast dump site E910-00-0016 1/17/01 5242 Y
characterization/classification 9/18/00 T5-1/2 19 High degree of confidence E910-00-0016 1/17/01 5244 Y
9/18100 20 Footnote problems E910-00-0016 1/17/01 5 4; T5-5 Y
9/18/00 21 Scan & static measurements E910-00-0016 1/17/01 54.3 Y
9/18/00 22 Upgrading areas to a higher E910-00-0016 1/17/01 54.4 Y
classification 9/18/00 23 NUREG-1507 concerns & Tc-E910-00-0016 11/2/01 55.24 1 Y
Carried over into RAI Q5 99 energy mistake 9/18/00 5 5.2 2 24 Use of beta/gamma surrogate E910-00-0016 1/17/01 55242 Y
for alpha detection 9/18/00 5 5 2 5 25 Subsurface sampling E910-00-0016 1/17/01 5 5 34.7 Y
9/18/00 26 Statistics Type 1 error E910-00-0016 1/17/01 T5-16 Y
9/18/00 1
27 Predetermine sample size E910-00-0016 1/17/01 App 5-2 Y
"Selecting a min. # of samples' 9118/00 1
1 1
-1I-8/19/02
SNEC LTP RAI Status NRC Ref Q#
Topic GPU NRC LTP LTP Revi Status/
Response
Accept Section Updated?
Resp. Person Letter# I Date Letter Date (YIN)
RAI 2
1A SHPO requirements E910-01-012 ER Y
11108100 6/20/01 1B Consult Pa agencies E910-01-012 ER Y
(Game/boat/fishetc) 6120/01 2
Justify Np-237 DCGL exclusion E910-01-012 Chpt 2 & 5 N
There is no Np-237 6120/01
@SNEC.
3A Use of screening DCGL &
E910-01-012 App 6 1 Y
assumptions 6120/01 3B Area Factors for building E910-01-012 App 6 1 Y
Verified to NRC in 5/14/02 surfaces 6120/01 mtg Issue resolved.
4 Soil DCGL assumptions &
E910-02-005 622 Y
Dose models currently justification 2/4/02 App 6 1 under review by NRC 5
Contaminated media limits E910-02-005 622 Y
Dose models currently 2/4/02 under review by NRC 6
How gross DCGLs will be E910-02-005 5 2 3 23 Y
calculated 2/4/02 52.3 24 7
Stream sediment exposure E910-02-005 6222 Y
pathway issues 2/4/02 6 2 2.6 T2-19 8
Subsurface DCGLs E910-02-005 6 2.2 Y
Dose models currently 2/4/02 T2-19 under review by NRC 9
Alpha emitters at historical E910-02-005 2 2.4 3, T2-Y outfalls 2/4/02 1,231, 5 2.1, T5-1, T5-4, 5.5 3 6, ER 10 Site Specific decommissioning E910-00-0018 7.1 Y
costs 12/4/00 E910-01-002 2114/01
RAI 3
1 Classification of area under CV E910-01-007 2.2 4 2 N
Carried over from RAI 1 Q6.
01/17/01 &
saddle 3119/01 Work scope not clearly 11/2/01 E910-02-002 defined 1/24/02 2
Clarify intent of gamma logging E910-01-007 11/2/01 2.2.4 Carried over from RAI 1 Q7.
3119/01 T2-3 3
Groundwater TRUs and E910-01-007 2.2.4.5 Y
Carried over from RAE 1 Q9 hydrology issues 3/19/01 ER E910-02-003 1/24/02 4
Efficiency footnote to LTP Table E910-01-007 11/2/01 T5-10 Y
Carried over from RAI 1 5-10 3/19/01 55.244 015 5
Correct Tc-99 energy E910-01-007 11/2/01 55.22 Y
Carried over from RAE 1 3/19/01 Q23 6
SSGS characterization, DCGL E910-01-007 App 6.1 Y
and Kd values 3/19/01 E910-02-003 1/24/02 7A Asbestos Disposal E910-02-003 11/2/01 ER Y
1124/02 7B PCB Disposal E910-02-003 ER Y
1/24/02 7C SSGS sump debris disposal E910-02-003 11/2/01 ER Y
1124/02 Charactenzation Phase 1 Characterization E910-01-0001 Chpt 2 Commitments DSF 1/30/01 1/17101 CV Pipe Tunnel &
E910-01-013 subsurface soil 7/2/01 Pavement & subsurface soil Phase 2 Characterization E910-01-0001 Chpt 2 Y
SSGS footprint 1/30/01 SSGS discharge tunnel &
E910-01-016 surrounding environs 9/04/01 Phase 3 Characterization E910-01-0001 Chpt 2 Y
River sediment 1/30/01 Yard drains E910-02-002 Intake tunnel 1/111/02 1
1 11 NRC-SNEC LTP RAI Status doc 8/19/02
NRC Ref Topic LTP Section Status Summary Letter Pathway Analysis: Use DandD default metabolic & behavior Submitted for review 7/31/02 dated 05/14/02 parameters.
Pathway Analysis (RAI2 0418)
(Ref 4/8/02 mtg )
(RAI2 04/8)
Conduct probabilistic analysis to determine sensitive parameters Submitted for review 7/31/02 (RAI2 Q4/8)
Conduct deterministic analysis to develop DCGLs.
Submitted for review 7/31/02 (RAI2 Q4/8)
Treat Kd as a stochastic parameter Submitted for review 7/31/02 (RAI2 Q4/8)
Verify hydraulic gradient slope data Verified in 5/8/02 NRC mtg.
(RAI2 Q4/8)
Verify 10,000 m' contaminated area is bounding.
Chpt 6 Verified in 5/8/02 NRC mtg Provide Co-Physics report to NRC GPU provided report (RAI2 Q4/8)
Provide information to justify reducing list of SNEC isotopes SNEC Calc E900-01-030, rev 3 submitted to NRC in 7131/02 mtg (RAI2 Q6)
NRC to re-evaluate the need for additional information to close out RAI2 06 on gross DCGLs Summary Letter Revise LTP to include the removal of all concrete from CV.
Chpts. 3 & 4 dated 05114/02 Include new survey units HP Issues (Ref 4/8/02 mtg.)
Demonstrate that CV surface surveys behind installed steel support structures comply w/release criteria Need to provide TRU/HTDN data for survey units Maps need to indicate boundaries of survey units for the grounds GPU agreed to do and will as opposed to showing only area classifications put info into FSS packages Summary Letter SNEC will use volumetric values for embedded pipes in 5 2 3.1.1 dated 6/4/02 conjunction with contaminated bldg area DCGLs (Ref. 5/8/02 mtg)
(Ref RAI2 Q3A)
Update LTP Table 5-2 to show which DCGL values (i e. surface or Table 5-2 volumetric) will be used in each survey unit.
(RAI2 Q3B)
NRC to recheck its evaluation of SNEC surface area factors (Ref Chpt 5 NRC has rechecked and SNEC Calc E900-01-005) concurred (RAI2 Q4/8)
Dose model. Use probabilistic approach to determine sensitivity Dose Model analysis Chpt 6 DandD metabolic & behavior parameters will be used as constraints PRCC method to be used in determining 25" or 75u percentile parameters. Check will be made to see if mean is captured with this distribution range.
Sensitive parameters will be used in the deterministic analysis A
Sensitivity & DCGL development will be conducted on each nuclide individually.
(RAI2 04/5/8)
Kds using site-denved ranges will be included in sensitivity Copy of ANL report provided analysis to NRC in 4/8/02 mtg.
(RAI2 Q4/8)
Include justification for the 10,000 m= contamination area & 1 m contamination zone thickness in LTP chpt 6.
(RAI2 Q8)
Use mass balance parameter in subsurface model Summary Letter NRC to provide feedback to SNEC on the format for presenting Dated 6/13/02 data from water & soil samples taken from under the CV.
(Ref 5/22/02 mtg)
NRC to provide guidance to SNEC on how the TRU/HTDN data should be presented in the LTP.
(RAI3 Q1)
Provide to NRC soil & gw data from samples taken under CV.
Revise TRU/HTDN table to clarify footnotes, i e. state analytical Chpt 2 techniques used & other nuclides analyzed but not listed Revise TRU/HTDN table to cross reference data to sample Chpt 2 locations Revise LTP to describe survey process to identify activated areas Chpt 5 in CV.
Revise LTP to denote all survey units that include the inner/outer Table 5-2 steel supports & discuss design of the FSS.
Review & clarify the LTP discussion on FSS design for survey Chpt 5 Per NUREG 1727 Section units 144 Commit in LTP that boundaries & char. data specific to each survey unit would be included in FSS design package.
NRC agreed to format of Table 5-2. However, SNEC will revise to Table 5-2 include numeric value for each survey unit to ref. FSS package I
NRC-SNEC LTP RAI Status doc 8/19/02
NRC Ref Topic LTP Section Status Revise LTP to eliminate MARSSIM method to assess 10% of the 52.7.6 FSS samples since most conservative ratios will be used for those areas where TRU/HTDNs are at MDA.
Table 5-5, pg 5-24, Footnote 9. Revise LTP to describe FSS Table 5-5 Subsurface sampling design for residual materials in subsurface soils 5 4 procedure Revise LTP to describe content of the FSS report per NUREG 5 2 8 1727, Section 14 5, pg 14-11:
57.2 Revise LTP to delete all text referring to collection of additional 5 1.3 / 5.2 5.3 Will use NRC letter report, samples prior to any statistical analysis 5 6 "Two stage Sampling in Final Status Decom," Feb 2000.
Revise LTP to explain methods to remove CV dome and prevent Chpts 3 & 4 Info may not be available until recontamination of lower half of CV during removal of dome.
after LTP approval If this is case NRC will make it an in process inspection item Include list of LTP changes requiring a license amendment.
Chpt 1 A Adams provided Plumbrook (sacred cows) information Revise LTP to reflect removal of concrete from inside the CV Chpt 3 & 4 Revise Figure 5-1 to show storm drain system.
Fig 5-1 Revise figures specific to SSGS basement walls & discharge Chpt 2 tunnel sections to reflect sample locations Revise LTP tables to clarify sample type descriptions.
Tables 2 3a, 2.3b, 2 6a Reflect guidance in NUREG-1727, App E on background 544 1/5442 reference areas. Delete sentence 'If any background reference area is determined to be inappropriate it is adjusted as necessary and documented" 6/21/02 Mtg CV saddle characterization results still needed by NRC.
Same as 6113/02 Summary Schneider suggested SNEC email him the results (RAI3 Q1)
Letter above "QA Procedures', pg 2-18 Clanfy procedure on how 2.5 Data obtained from written decommissioning data from earlier periods of site remediation will procedures Cophysics report be included into the DQO process (e g. site soil remediation in on RESRAD verifications of 1994 and survey of RWDF, Pipe tunnel & C&A bldgs)
Reactor Support Bldg releases.
"Remaining Tasks* pg 3-2 Provide summary of embedded/buried 3 2 Summary to be put in Chpt 3 pipe that will remain on site after license term Detailed info will be put into FSS package.
"Surrogate Ratio DCGLs", pg 5-7. Revise last par to indicate when 5 2.3 2 3 SNEC will use best data that a surrogate ratio is established using data prior to remediation, it represents the area Nuclide may not always be the case to reestablish new ratio by post justification will be remediation sampling. In most cases the most conservative ratio documented in survey will be applied to the survey unit package.
(RAI2 Q6)
"Gross Activity DCGLs" pg 5-8. Clarify the statement "Post 5 2.3.2.4 Section will be revised remediation sampling will be used to adjust DCGL values as Sampling data will be used to necessary before performing the FSS.' May need to apply a calculate the effective (unity) different method for regulatory compliance vice adjusting DCGL.
DCGL Section will also be revised to allow use of both surface & volumetric DCGL "Changes in Classification" pg 5-14" Revise 2-sentence to say 5 2.44 Section to be revised to "All changes of area classification (after LTP approval) where a reflect NRC approval before higher classification is lowered (i e, Class I to Class2) will require lowering a classification.
a license amendment (see Section 1 0)
"Written Procedures", Table 5-3, pg 5-18 Clarify whether a 5 2.7.2 FSS report guidance will be procedure will be developed to cover preparation and contents of in new procedure FSS report.
"SNEC Facility Sample Analysis", pg 5-19 3' bullet bottom of pg 5.2.7.6 At least 5% of total samples states "5-10% of selected sample groups will be analyzed...."
will be analyzed for HTD Need to clarify the term "selected sample groups' nuclides "Survey Design", pg 5-23, Clarify survey design or procedure 5.4 Applicable procedure will be reference for facility systems such as piping referenced in LTP.
"Survey Design". Table 5-5, pg 5-24: Re Footnote I, provide a 5.4 Applicable procedure will be reference describing subsurface sampling procedure referenced in LTP.
"Measurement Locations", pg 5-28: Define the term 5.4.3 2 Will use NRC letter report,
"...supplemental measurement locations.."
"Two stage Sampling in Final Status Decom,' Feb 2000 "Gamma Scan MDC for Land Areas", pg 5-38: Use of scan MDC 5.5 2 4.3 Site specific scan MDCs will values in MARSSIM, Table 6.7 for SNEC is inappropriate. Such be derived & incorporated values need to be site specific.
into survey packages "HTD Radionuclides", pp5-38/39 Clarify reference to EPRI report 5.5 3 6 Section will be deleted after on "Utility Use of Constant Scaling Factors' approval of SNEC nuclide list NRC-SNEC LTP RAI Status doc 8119102
NRC Ref Topic LTP Section Status "Data Recording", pg 5-46 Clarify term "correcting for background" 5 5 5.3 Revise LTP to state material
& reference the applicable procedure specific bkgd will be subtracted "Definitions%, pg 5-54: Def #26, "Survey Unit" needs to be revised 5 8 Revise to use MARSSIM to delete of revise the ref To "the actual size of a survey unit is not definition deemed to be critical."
"Elevated Msmt Comparison%, pg 5-67, 2"0 par'. Clarify text at end Text will be removed from of this par. re msmt densities Note NUREG-11727, App E this section provides guidance to this issue (RAIl Q22)
"Resurvey%, 2" par. needs to explain that when a new survey unit 54 4.5 SNEC agrees to buffer the is separated out from an existing survey unit or is subdivided, the openfouter edges of impacted new survey unit should include a buffer zone that adequately areas bounds the area of identified contamination.
"Resurvey", 4" par. Indicates replacement msmts Are collected 5.4 4 5 Revise LTP - The whole within remediated area where only a small fraction of the area survey unit will be resurveyed
(<10%) of a Class 1 survey unit is remediated This statement needs to be clarified since replacement samples cannot be taken from areas remediated due to FSS & then combined with sample data from the remainder of the survey unit to demonstrate compliance. When an area in a survey unit is remediated, a new set of the required sample size (i.e. the predetermined sample size from the DQO process) must be obtained during the FSS 7/31/02 Mtg SNEC Calculation E900-01-030, Rev 3, "SNEC Radionuclide List" Chpt 6 NRC reviewing was submitted to NRC for final review. List contains 11 nuclides applicable to SNEC Submitted to NRC electronic media (CDs) for surface and Chpt 6 NRC reviewing subsurface dose models.
NRC requested SNEC look at other pathways, other than drinking Chpt 6 URS will run RESRAD to water, for bedrock, SSGS undisturbed backfill and spray pond include these additional undisturbed overburden, pathways SNEC provided NRC results of groundwater duplicate analyses.
NRC reviewing NRC will compare against ORISE results NRC-SNEC LTP RAI Status doc 8/11902
NRC-SNEC LTP RAI Status doc Information Provided to NRC Since 418/02 Mtg.
Submittal Method
- 1. CoPhysics Report, "Embedded Pipe Radiation Survey Report" January 2002.
Via GPU Letter E910-02-0017, dated 4/17/02
- 2. ANL Report, "Kd Study of Site Soils and Construction Debris from the SNEC Decommissioning Provided in NRC 4/8/02 Mtg.
Project," February 2002.
- 3. SNEC Calc. E900-01-005, Determination of Surface Area Factors," Apnl 5, 2002 Provided in NRC 4/8/02 Mtg
- 4. CD-ROM RESRAD 6 1 Dose Model Files for SNEC Surface Model.
Provided In NRC 4/8/02 Mtg
- 5. CD-ROM RESRAD 6 1 Dose Model Files for SNEC Subsurface Model and also URS Report Provided in NRC 4/8/02 Mtg
- 6. Presentation handouts addressing NRC Letter dated March 28, 2002.
Provided in NRC 4/8/02 Mtg
- 7. SNEC Calc 6900-02-008, SNEC Facility DCGL Values for Volumetric Contamination," February 7, Provided in NRC 4/8/02 Mtg 2002
- 8. Additional copies of CoPhysics Report, "Embedded Pipe Radiation Survey Report" January 2002 Provided in NRC 5/8/02 Mtg
Provided in NRC 5/8/02 Mtg 10 Table of RESRAD input values for SNEC surface model Provided in NRC 5/8/02 Mtg
- 11. Presentation handouts addressing NRC Letter dated 5/1/02.
Provided in NRC 5/8/02 Mtg.
- 12. Summary table of transuranic (TRU) and hard to detect (HTD) radionuclides from SNEC Provided in NRC 5/22/02 Mtg characterization work.
13 Four (4) prints describing the following Provided in NRC 5/22/02 Mtg SNEC Grout, Sheeting, and Well Location Plan SNEC Well Location Plan SNEC Grout Curtain Location Plan SNEC Anchor Bolt Hole and Well Locations
- 14. Presentation handouts addressing NRC Letter dated May 13, 2002.
Provided in NRC 5/22/02 Mtg.
15 SNEC Calc E900-01-030, Rev 2, SNEC Radionuclide List," June 20, 2002 Provided in NRC 6/21/02 Mtg.
16 Presentation handouts addressing NRC Letter dated 6/14/2002 Provided in NRC 6/21/02 Mtg.
- 17. Four 2-set CD ROM copies of SNEC Subsurface Dose Model files These replace CDs Provided in NRC 7/31/02 Mtg.
previously provided to NRC in 4/8/02 mtg 18 Four CD ROM copies of SNEC Surface Dose Model files These replace CDs previously provided Provided in NRC 7/31/02 Mtg to NRC in 4/8/02 mtg
- 19. Hard copy of Surface Model book containing.
Provided in NRC 7/31/02 Mtg SNEC Calc E900-01-030, Rev 3, "SNEC Radionuclide List," July 29, 2002 (2 copies).
DCGL Lists Sensitive Parameter Tables Sensitive Parameter Statistic Reports Base Inputs ANL Derived Kds
- 20. Hard copy of Subsurface Model book containing-Provided in NRC 7/31/02 Mtg DCGL Lists Sensitive Parameter Tables Sensitive Parameter Statistic Reports Base Inputs
- 21. Radiological results of SNEC groundwater samples taken with ORISE duplicates.
Provided in NRC 7/31/02 Mtg
- 22. One additional copy of Surface Model Book (see item 19 above)
Via GPU Letter E910-02-039 dated August 20, 2002.
23 Two (2) CD ROM copies providing requested information for all pathways subsurface dose Via GPU Letter E910-02-039 dated analysis results for bedrock, SSGS undisturbed backfill and spray pond undisturbed overburden.
August 20, 2002.
24, Table of unresolved RAI issues (2 copies) requiring discussion and resolution in August 29, 2002 Via GPU Letter E910-02-039 dated mtg August 20, 2002 25 Two (2) copies of table titled "Comparison of Proposed DCGL Values with Other Miscellaneous Via GPU Letter E910-02-039 dated Values" August 20, 2002 8/191902
r_ n'rlfn tf Prnnn~qAd DCOL Vnlues with Other Miscellaneous Values
-I SNEC Initial RESRAD Proposed Composite SNEC RESRAD 6.1 Deterministic Values 5.82 Deterministic DCGL's NRC Screening DCGL's (URS + SNECM (pCl/g)
URS Developed Subsurface Values (pCi/g)
DCGL's (pCI/g)
I
.,-,I J uv-02 February-00 May-99 25 mrem/y Limit 4 mrem/y DW Limit 25 mremly Limit 4 mrem/y DW Limit 25 mremly Limit 4 mrem/y DW LImit 25 mrem/y Limit 25 mrem/y Limit Am-241 25.7 2.3 25.7 207 107 2.3, 1.5 2.1 Am-241 C-14 26.8 5.4 26.8 450 42.1 5.4 3.7 12 C-14 Co-60 3.5 66.7 3.5 7.1E+10 8
66.7 2.5 3.8 CO-60 Cs-137 6.6 397 6.6 1.7E+17 21.1 397 8.5 11 Cs-137 Eu-152 10.1 1443 10.1 1.8E+15 20.7 1443 6.3 8.7 Eu-152 H-3 645' 31.1 645,-
279 2185 31.1 260 110 H-3 NI-63 747
'19249 747,-
1.9E+08 3220 19249 1700 2100 N1-63 Pu-238 30.1 0.41 30.1, 23.5 123 0.41 24 2.5 Pu-238 Pu-239 6.8, 0.37 6.8 1.4 45.7 0.37 22 2.3 Pu-239 Pu-241 866 19.8 866 4803 4072 19.8 45 72 Pu-241 FSr.90 1.2,
0.61 1.2 7.9 5.6 0.61 1.6 1.7 Sr-90