ML052020165

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Response to NRC RAI on FSS Final Report Nos. 10 and 10A
ML052020165
Person / Time
Site: Maine Yankee
Issue date: 07/06/2005
From: Whitney M
Maine Yankee Atomic Power Co
To:
Document Control Desk, NRC/FSME
References
Download: ML052020165 (27)
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Text

- 4 Maine Yankee 321 OLD FERRY RD.

  • WISCASSET, ME 04578-4922 July 6, 2005 MN-05-033 RA-05-036 Proposed Change No. 218, Supplement 29 UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk Washington, DC 20555

References:

(1) License No. DPR-36 (Docket No. 50-309)

(2) Maine Yankee Letter to USNRC, MN-04-020, dated March 15, 2004, License Amendment Request: Release of Non-ISFSI Site Land, Proposed Change No. 218 (3) Maine Yankee Letter to USNRC, MN-05-028, dated May 25, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 10, Proposed Change No. 218, Supplement 26-(4) Maine Yankee Letter to USNRC, MN-05-03 1, dated June 20, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 10A, Proposed Change No. 218, Supplement 27 (5) USNRC Letter to Maine Yankee, dated June 30, 2005 Request for Additional Information (RAI) Regarding Final Status Survey (FSS)

Supplement No. 10 and 1OA

Subject:

Response to NRC RAI on FSS Final Report Nos. 10 and 10A On March 15, 2004, Maine Yankee submitted a request for amendment (Reference No. 2) to the facility operating license (Reference No. 1) pursuant to 10 CFR 50.90 and in accordance with the NRC Approved License Termination Plan (LTP) for Maine Yankee, to indicate NRC's approval of the release of the Non-ISFSI site land from the jurisdiction of the license. In support of that request, Maine Yankee supplied the information required in LTP section 1.4.2 and 5.9.3. The land area associated with the license amendment request included the entire non-ISFSI portion of the site land. The dismantlement and survey information for the survey units is being submitted to the NRC in FSS Final Reports.

In Reference Nos. 3 and 4, Maine Yankee submitted FSS Final Report Nos. 10 and 1OA, respectively. In Reference No. 4, USNRC requested additional information on technical information submitted in FSS Final Report Nos. 10 and 10A. This additional information is provided in an attachment to this letter.

If you have any questions, please contact me.

Sincerely,

  • 9'/a4 Michael A. Whitney Sr. Licensing Engineer ab5D \

UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk Page 2 of 2

Attachment:

Maine Yankee Response to NRC Request for Additional Information (RAI)

Regarding Final Status Survey (FSS) Final Report Nos. 10 and I OA cc: Mr. D. R. Lewis, Esq., Shaw Pittman Mr. C. Pray, State of Maine, Nuclear Safety Advisor Mr. P. J. Dostie, State of Maine, Division of Health Engineering Mr. D. Gillen, NRC Director, Division of Waste Management Mr. M. Rosenstein, USEPA Region I Mr. S. J. Collins, NRC Regional Administrator, Region I Mr. J. Buckley, NRC NMSS Project Manager, Decommissioning Mr. M. Roberts, NRC Region I Mr. R. Shadis, Friends of the Coast

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A SUPPLEMENT 10 FR-2900 SU 2 Railroad Tracks and Roadways NRC RAI No. 1 - FSS Final Report No. 10, Attachment 1, Section 5.1.4 FR-2900 RailroadTracks and Roadways, Section 5.1.4, Attachment I states, "Followingthe FSS of the survey unit areareportedhere, standardcontrols andprocedureswere implemented including the provisionsforaccess control, postings, and routine surveys. Subsequently, waste was relocatedfrom the RestrictedArea to a temporary storage locationat the Independent Spent Fuel Storage InstallationISFSI ..However, as an additionalconservatism, a verificationsurvey will be performed along the vehicle travelpath."

It appearsthat radioactive materialwas transportedover the survey unit after thefinal status survey (FSS) was completed Performanceofthe FSSpriorto completing decommissioning activities is inconsistentwith License TerminationPlan (LTP) Section 5.1.2 (a). Please clarify whether radioactivewaste materialswere or will be transportedover the area after completion of the FSSs. If waste was transportedoverpreviously FSSed survey units, pleaseprovide the verification survey data.

Maine Yankee Response:

Contaminated soil which was stored in the Industrial Area was transported to a storage area within the ISFSI boundary to facilitate the remediation and survey of the remaining soil survey units within the Industrial Area. This transfer required the soil to be transported in trucks over the roadway that had been FSS surveyed as part of FR-2900 Survey Unit No. 2. This soil transfer was conducted in a manner which minimized the potential spread of contamination including the loading of each truck such that the soil was well contained in the truck and the free release survey of the truck tires. Finally, verification surveys were conducted following the completion of transfer activities.

LTP Section 5.1.2 (a) had provision for this kind of contingency which was allowed to be performed when authorized by the FSS Superintendent. Similarly, LTP Section 5.11.4 allowed for the evaluation of decommissioning activities which create a potential for the spread of contamination to FSS areas. This LTP section called for verification surveys to be conducted based on the potential for recontamination as determined by the FSS Superintendent.

Accordingly, as described in the referenced release record, verification surveys were performed along the vehicle travel path. Approximately 100% of the vehicle travel path was surveyed with ISOCS measurements configured in the same manner as the FSS measurements. The ISOCS results are provided in Table I for the measurement locations shown in Appendix A. It should be noted that none of these results were above MDA. Thus, the table provides the MDA's. In addition, paved areas and adjacent shoulders along the vehicle travel path were scanned with SPA-3. The resulting survey maps are provided in Appendix B.

Page 1

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 1OA Table I Verification Survey Summary FR-2900 SU 2 Roads Location Co-60 pCi/g Cs-137 pCi/g Co-60 dpm/lOOcm2 Cs-137 dpm/lO0cm2 Sool 0.100 0.145 178 258 S002 0.131 0.180 233 320 S003 0.130 0.189 231 336 S004 0.129 0.174 229 309 S005 0.135 0.185 240 329 S006 0.128 0.184 227 327 S007 0.126 0.181 224 321 S008 0.125 0.188 222 334 S009 0.135 0.177 240 314 solo 0.130 0.184 231 327 Sol 0.122 0.182 217 323 S012 0.131 0.184 233 327 S013 0.129 0.190 229 337 S014 0.120 0.189 213 336 S015 0.123 0.179 218 318 S016 0.127 0.194 226 345 S017 0.128 0.179 227 318 S018 0.115 0.184 204 327 S019 0.125 0.187 222 332 S020 0.135 0.184 240 327 S021 0.124 0.177 220 314 S022 0.125 0.192 222 341 S023 0.127 0.177 226 314 S024 0.126 0.185 224 329 S025 0.131 0.183 233 325 S026 0.131 0.182 233 323 S027 0.133 0.176 236 313 s028 0.127 0.182 226 323 S029 0.139 0.182 247 323 S030 0.127 0.180 226 320 S031 0.130 0.186 231 330 S032 0.131 0.180 233 320 s033 0.127 0.179 226 318 S034 0.130 0.179 231 318 S035 0.122 0.189 217 336 s036 0.131 0.181 233 321 S037 0.119 0.182 211 323 S038 0.129 0.182 229 323 S039 0.126 0.178 224 316 S040 0.118 0.187 210 332 S041 0.125 0.183 222 325 S042 0.130 0.184 231 327 Page 2

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A Table I Verification Survey Summary FR-2900 SU 2 Roads Location Co-60 pCilg Cs-137 pCilg Co-60 dpm/100cm' Cs-137 dpm/lOOcm2 S043 0.130 0.186 231 330 S044 0.122 0.181 217 321 S045 0.125 0.176 222 313 S046 0.131 0.185 233 329 S047 0.134 0.188 238 334 S048 0.125 0.176 222 313 S049 0.128 0.188 227 334 S050 0.123 0.184 218 327 S051 0.127 0.182 226 323 S052 0.129 0.181 229 321 S053 0.119 0.186 211 330 S054 0.121 0.180 215 320 S055 0.135 0.177 240 314 S056 0.120 0.179 213 318 S057 0.137 0.178 243 316 S058 0.126 0.174 224 309 S059 0.129 0.180 229 320 S060 0.132 0.181 234 321 S061 0.130 0.190 231 337 S062 0.122 0.177 217 314 S063 0.123 0.192 218 341 S064 0.130 0.182 231 323 S065 0.122 0.185 217 329 S066 0.128 0.178 227 316 S067 0.131 0.177 233 314 S068 0.127 0.182 226 323 S069 0.129 0.182 229 323 S070 0.130 0.189 231 336 S071 0.122 0.181 217 321 S072 0.126 0.179 224 318 S073 0.122 0.186 217 330 S074 0.119 0.180 211 320 S075 0.127 0.183 226 325 S076 0.124 0.165 220 293 S077 0.138 0.176 245 313 S078 0.126 0.184 224 327 S079 0.129 0.191 229 339 S080 0.133 0.177 236 314 SOBI 0.137 0.183 243 325 S082 0.127 0.179 226 318 S083 0.118 0.189 210 336 S084 0.126 0.187 224 332 Page 3

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 1OA Table I Verification Survey Summary FR-2900 SU 2 Roads Location Co-60 pCilg Cs-137 pCilg Co-60 dpm/lOOcm l Cs-137 dpmlOOcm2 S085 0.126 0.175 224 311 S086 0.126 0.182 224 323 S087 0.128 0.171 227 304 S088 0.130 0.183 231 325 S089 0.122 0.171 217 304 S090 0.132 0.177 234 314 S091 0.079 0.121 140 215 S092 0.116 0.164 206 291 S093 0.078 0.114 139 202 S094 0.074 0.118 131 210 S095 0.066 0.116 117 206 S096 0.076 0.112 135 199 S097 0.063 0.114 112 202 S098 0.072 .0.114 128 202 S099 0.075 0.118 133 210 S100 0.071 0.118 126 210 SIOI 0.073 0.114 130 202 S102 0.068 0.120 121 213 S103 0.073 0.110 130 195 S104 0.083 0.109 147 194 S105 0.075 0.116 133 206 S106 0.070 0.117 -_124 208 S107 0.069 0.114 123 202 S108 0.078 0.117 139 208 slog 0.075 0.106 133 188 Silo 0.073 0.115 130 204 Sill 0.071 0.118 126 210 S112 0.078 0.111 139 197 S113 0.070 0.111 124 197 S114 0.068 0.113 - 121 201 S115 0.076 0.116 135 206 S116 0.076 0.120 135 213 S117 0.069 0.114 123 202 S18 0.083 0.114 147 202 S119 0.077 0.114 137 202 S120 0.074 0.111 131 197 S121 0.073 0.112 130 199 S122 0.070 0.119 124 211 S123 0.076 0.111 135 197 S124 0.077 0.110 137 195 Mean .. 0.113 1 0.164 200 290n Page 4

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A NRC RAI No. 2 FSS was performed with I m In Situ Object CountingSystem (ISOCS) measurements (with afield of view of 78.5 m2) which is inconsistentwith the LTP Section 6.7.2 requirementfor a Derived ConcentrationGuideline Limit expressedas dpm/i OOcm 2 gross beta. Pleasejustify the use of ISOCS in meeting the LTP requirement to perform beta FSSs.

Maine Yankee Response:

As described in Reference No. 69, the LTP clearly allows the surface DCGL specified in gross detectable beta to be measured by gamma spectroscopy. The LTP clearly stated in section 5.5.1 .a that volumetric measurements could be used in the place of gross beta measurements.

"Volumetric concrete samples will be analyzed by gamma spectroscopy" and will be evaluated "by using the radionuclide specific results to derive the surface activity equivalent and determine compliance using the unity rule." Furthermore, LTP section 5.5.l.d, Pavement-Covered Areas states that "the DCGL applied to these areas will be equal to the buried piping DCGL" and that "scan and static gamma and beta-gamma surveys are made as determined by the survey unit design." Additional justification for the use of gamma measurement and ISOCS, was discussed in Reference No. 69.

The use of the detector in the uncollimated configuration versus the 90 degree collimated configuration increases the likelihood that the detector will be responsive to photons at the margin of its field of view in order to make the scan survey as sensitive as possible. Placing the detector within I m of the surface decreases the detector MDC. The MDC for the road (FR-2900 SU 2) was approximately 1470 dpm/100 cm2.

It is important to note that the FR2900 surveys were Class 3 surveys and as such require I to 10% scan coverage. Nonetheless, over 60% of the Survey Unit No. 2 area was scanned with ISOCS. As a Class 3 survey, the sensitivity for scanning is not tied to the area between the static measurement locations as they are in a Class 1 area, but rather represents the best reasonable effort. Nonetheless, while the FR2900 ISOCS measurement field of view was 78.5 m2 as a result of no collimation, the source to detector distance was 1 m versus the 3m source to detector distance for the Class I land surveys with the 90 degree collimator. In addition, the measurement array was designed to provide overlapping field of views (10 meter FOV taken on a 7 meter center-to-center distance). Finally, the MDC's achieved with this configuration were similar to or better than the MDC's achieved for the Class I land surveys while utilizing the same investigation levels (except that any positive detect for Co-60 would have been investigated).

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ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and I1A SUPPLEMENT 10A FR-2900 SU3 Roads/Railroads NRC RAI No. 1 - FSS Final Report No. 10A, Attachment 1, Section 5.1.4 & Release Record FR-2900 SU3 Roads/Railroads, Section A , Section 5.1.4, and Section A of the FSS Report (FSSR), indicate that the railroad was used to transferradioactivewastefrom demolition activities after the FSS activities had been completed, and that verificationsurveys will be performed. Performanceof the FSSprior to completing decommissioningactivities is inconsistentwith LTP Section 5.1.2 (a). Please clarify whether radioactivewaste materialswere or will be transportedover the area after completion of the FSSs. If waste was transportedover areasthat werepreviouslyfinalstatus surveyed, pleaseprovide the verification survey data.

Maine Yankee Response:

During the final stages of the remediation of the remaining soil survey units within the Industrial Area, contaminated soil was transported to a storage area within the ISFSI boundary for temporary storage pending disposal at a licensed facility offsite. This transfer required the soil to be transported in rail cars over railways that had been FSS surveyed as part of FR-2900 Survey Unit No. 3. This soil transfer was conducted in a manner which minimized the potential spread of contamination including the loading of each railcar such that the soil was well contained within the railcar and the railcars surveyed for loose contamination. Finally, verification surveys of the rail travel path were conducted following the completion of transfer activities.

LTP Section 5.1.2 (a) had provision for this kind of contingency which was allowed to be performed when authorized by the FSS Superintendent. Similarly, LTP Section 5.11.4 allowed for the evaluation of decommissioning activities which create a potential for the spread of contamination to FSS areas. This LTP section called for verification surveys to be conducted based on the potential for recontamination as determined by the FSS Superintendent.

Accordingly, as described in the referenced release record, verifications surveys were performed along rail travel path. Approximately 100% of the rail travel path from the Industrial Area to the ISFSI was surveyed with ISOCS measurements configured in the same manner as the FSS measurements. . A significant portion of the rail north of the ISFS1 by the ball field was also surveyed with ISOCS measurements. This area was typically used to stage railcars for shipment.

The ISOCS results are provided below in Table 2 for the measurement locations shown in Appendix C. It should be noted that only one of these results was above MDA; this indicated by a bold font (S004, Cs-137). Thus, for the remaining results, the table provides the MDA's.

These results are consistent with the original FSS results that demonstrated that prior shipping of contaminated material had no measurable radiological impact on the rails.

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ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A Table 2 Verification Survey Summary FR-2900 SU 3 Rails Location Co-60 pCi/g Cs-137 pCi/g SOO0 0.072 0.113 S002 0.070 0.066 S003 0.067 0.078 S004 0.069 0.100 S005 0.073 0.064 S006 0.073 0.115 S007 0.125 0.200 S008 0.138 0.200 S009 0.136 0.203 Solo 0.140 0.193 SO1l1 0.074 0.111 S012 0.071 0.074 S013 0.064 0.097 S014 0.067 0.099 S015 0.068 0.103 S016 0.119 0.185 S017 0.117 0.165 S018 0.126 0.182 S019 0.125 0.181 S020 0.126 0.174 S021 0.121 0.167 S022 0.108 0.163 S023 0.106 0.170 S024 0.111 0.171 S025 0.121 0.099 S026 0.117 0.163 S027 0.111 0.170 S028 0.117 0.171 S029 0.130 0.168 S030 0.111 0.171 S031 0.130 0.153 S032 0.120 0.165 S033 0.114 0.162 S034 0.106 0.144 S035 0.121 0.161 S036 0.111 0.163 S037 0.114 0.155 S038 0.121 0.164 S039 0.110 0.168 S040 0.113 0.162 S041 0.102 0.170 Page 7

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAT) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A Table 2 Verification Survey Summarv FR-2900 SU 3 Rails Location Co-60 pCi/g Cs-137 pCi/g S042 0.112 0.161 S043 0.118 0.184 S044 0.127 0.178 S045 0.115 0.175 S046 0.121 0.188 S047 0.116 0.178 S048 0.126 0.183 S049 0.127 0.167 S050 0.122 0.180 S051 0.129 0.181 S052 0.128 0.176 S053 0.103 0.158 S054 0.106 0.083 S055 0.101 0.152 S056 0.104 0.154 S057 0.098 0.152 S058 0.098 0.151 S059 0.100 0.145 S060 0.100 0.152 S061 0.112 0.145 S062 0.103 0.150 S063 0.096 0.160 S064 0.115 0.156 S065 0.108 0.152 S066 0.098 0.153 S067 0.098 0.148 S068 0.104 0.154 S069 0.108 0.151 S070 0.104 0.149 S071 0.093 0.144 S072 0.100 0.144 S073 0.115 0.149 S074 0.088 0.145 S075 0.106 0.154 S076 0.107 0.152 S077 0.088 0.155 S078 0.100 0.161 S079 0.106 0.143 S080 0.101 0.156 S081 0.112 0.162 S082 0.100 0.083 Page 8

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and IOA Table 2 Verification Survey Summary FR-2900 SU 3 Rails Location Co-60 pCilg Cs-137 pCi/g S083 0.117 0.159 S084 0.111 0.167 SO85 0.105 0.164 S086 0.108 0.164 S087 0.116 0.161 S088 0.105 0.162 S089 0.108 0.162 S090 0.101 0.080 Mean 0.107 0.152 NRC RAI No. 2 - FSS Final Report No. IA, Attachment 1, Section 4.2.4 In Attachment 1, Section 4.2.4, it is stated that a dead man raildevice has been installedat the southern end of the rail. Will the device be under the administrative(Lock out / Tag out) control of the ISFSI manager?

Maine Yankee Response:

While this device is not under that "Lock out / Tag out" procedure, administrative controls have been instituted to control the release of equipment and rail cars out of the ISFSI storage pile restricted area. Equipment exiting the restricted area storage pile will require surveys appropriate for unconditional release. Railcars will require release surveys as required by the shipping procedure and will be surveyed for loose contamination prior to exiting the restricted area. The debris in the loaded railcars will be covered and/or put into burrito bags prior to exiting either end of the restricted area. Routine direct contamination surveys of the storage pile perimeter will be performed to ensure that contamination has not migrated outside of the restricted area. These controls have been conveyed to all loading personnel by means of read and sign.

NRC RAI No. 3 - Release Record FR-2900 SU3 Roads/Railroads, Section B In Section B, it is stated that ISOCS scans wereperformed with fields of view of 78.5 m2 andan open collimation configurationwith a broaderfieldof view (10 m2 ). In the April 19, 2005, meeting, Maine Yankee stated that it had an agreement with the State ofMaine not to perform JSOCs scans with fields of view greaterthan 28 m2 . Scans withfields ofview greaterthan 28.5 m are inconsistentwith Maine Yankee EC-003-04justificationfor the detection capabilitieson the scan margins. Pleasejustify using afield of view of 78.5 M 2 given MYEC-003-04 is based on a maximum field ofview of28 mi2 for these soil areas.

Page 9

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A Maine Yankee Response:

The use of the detector in the uncollimated configuration versus the 90 degree collimation configuration increases the likelihood that the detector will be responsive to photons at the margin of its field of view in order to make the scan survey as sensitive as possible. Placing the detector within 1 m of the surface decreases the detector MDC. The MDC for the rails (FR-2900 SU 3) was approximately 0.42 pCi/g (2200 dpm/100 cm2 equivalent) for Cs-l37 and 0.15 pCi/g (800 dpm/100 cm' equivalent) for Co-60.

It is important to note that the FR2900 surveys were Class 3 surveys and as such require 1 to 10% scan coverage. Nonetheless, approximately 100% of the Survey Unit No. 3 area was scanned with ISOCS. As a Class 3 survey, the sensitivity for scanning is not tied to the area between the static measurement locations as they are in a Class I area, but rather represents the best reasonable effort. Nonetheless, while the FR2900 ISOCS measurement field of view was 78.5 mi as a result of no collimation, the source to detector distance was 1 m versus the 3m source to detector distance for the Class 1 land surveys with the 90 degree collimator. In addition, the measurement array was designed to provide overlapping field of views (10 meter FOV taken on a 7 meter center-to-center distance). The was more than adequate coverage in view of the fact that the width of the rail survey unit was 6 meters. Finally, the MDC's achieved with this configuration were similar to or better than the MDC's achieved for the Class 1 land surveys while utilizing the same investigation levels (except that any positive detect for Co-60 would have been investigated).

NRC RAI No. 4 The staffnotes that surveys of areasinside the ISFSI land areaas describedin Maine Yankee letter ofMay 16, 2005, will not be approvedforunrestrictedrelease at this time.

Maine Yankee Response:

Maine Yankee understands that the surveys of the areas inside the ISFSI land area will not be approved for unrestricted release at this time. This area was removed from the request for release of land by Reference No. 61. The ISOCS measurements which included this land area were performed to ensure the survey unit was adequately covered, overlapping ISOCS field of views as appropriate.

Page 10

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and IOA FR-0200 Yard East SU 8 NRC RAI No. 5 Section B, indicates that the survey design criteriais based on a soil DCGL. However, the survey unit consists ofboth soil and buriedconcrete structures. ISOCs scans were performed on concrete trenches andsoil. This approachappearsto be inconsistentwith the LTPfor surveying concrete structures. Pleasejustifthe use of a soil DCGLfor the buriedconcrete trenches.

In LTP Section 6. 7.2, the DCGLfor buriedconcrete is given as 9800 dpm/J00 cm2 basedon gross beta measurements in dpmnz100 cm. Pleasejustif the use ofthe ISOCS in meeting the LTP requirementto perform beta FSSs.

Maine Yankee Response:

A decision to treat concrete remnants like soil for the purposes of scan surveys was made because the density of the concrete compared to soil is not very different. Scans are typically performed on the irregular exterior surfaces of structures which have been buried since construction or the interior portions of the concrete which have never been exposed to sources of contamination.

Under these conditions, the only effect of the density is its ability to attenuate photons. The difference in mass attenuation coefficients of 1.6 to 1.8 g/cm3 soil and 2.0 to 2.2 g/cm3 concrete is approximately 5% for either Cs-137 or Co-60.

As described above and in Reference No. 69, the LTP clearly allows the surface DCGL specified in gross detectable beta to be measured by gamma spectroscopy. The LTP clearly stated in section 5.5.1.a that volumetric measurements could be used in the place of gross beta measurements. "Volumetric concrete samples will be analyzed by gamma spectroscopy" and will be evaluated "by using the radionuclide specific results to derive the surface activity equivalent and determine compliance using the unity rule." However, in this case the concrete remnants were treated like soil for which gamma spectroscopy is applicable.

Page 11

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A References

1. Maine Yankee Letter to USNRC, MN-02-048, dated October 15, 2002, Revision 3, Maine Yankee's License Termination Plan
2. USNRC Letter to Maine Yankee dated February 28, 2003, "Issuance of Amendment No.

168 to Facility Operating License No. DPR Maine Yankee Atomic Power Station -

Approval of the MY License Termination Plan"

3. Maine Yankee Letter to USNRC, MN-04-020, dated March 15, 2004, License Amendment Request: Release of Non-ISFSI Site Land, Proposed Change No. 218
4. USNRC Memorandum from John T. Buckley to Claudia M. Craig dated March 23, 2004, Meeting Report for the March 17, 2004, Meeting with Maine Yankee Atomic Power Company (Maine Yankee)
5. USNRC Memorandum from John Buckley to Biweekly Notice Coordinator dated May 5, 2004, Request for Publication in Biweekly FR Notice - Notice of Consideration of Issuance of Amendment to Facility Operating License DPR-26, Proposed No Significant Hazards Consideration Determination, and Opportunity for Hearing (TAC No. L52090)
6. Maine Yankee Letter to USNRC, MN-04-03 1, dated May 6, 2004, Release of Non-ISFSI Site Land - FSS Final Report No. 1A, Proposed Change No. 218, Supplement 1
7. Federal Register Biweekly Notice: Applications and Amendments to Facility Operating Licenses Involving No Significant Hazards Consideration - Maine Yankee, 69FR29768, dated May 11, 2004
8. Maine Yankee Letter to USNRC, MN-04-042, dated July 6, 2004, Maine Yankee License Amendment Request - Release of Non-ISFSI Site Lands
9. USNRC Letter to State of Maine dated July 30, 2004, Response to State of Maine Comments on Maine Yankee License Amendment Request - Release of Non-ISFSI Site Lands
10. Maine Yankee Letter to USNRC, MN-04-044, dated August 12,2004, Release of Non-ISFSI Site Land - Resubmittal of FSS Final Report No. 1, Proposed Change No. 218, Supplement 2
11. USNRC Letter to Maine Yankee dated August 18, 2004, Integrated Inspection No.

05000309/2004001

12. USNRC Letter to Maine Yankee dated August 18, 2004, Changes to the Maine Yankee Atomic Power Station License Termination Plan Using the 50.59 Process
13. Maine Yankee Letter to USNRC, MN-04-047, dated September 2, 2004, License Amendment Request - Release of Non-ISFSI Site Land, Proposed Change No. 218, Supplement 3
14. Maine Yankee Letter to USNRC, MN-04-048, dated September 7,2004, Reply to NRC Letters Re: Changes to Maine Yankee LTP Using 50.59 Process
15. USNRC Letter to Maine Yankee dated October 14, 2004, Meeting Report for the September 9,2004, Meeting with Maine Yankee Atomic Power Company (Maine Yankee)
16. Maine Yankee Letter to USNRC, MN-04-049, dated September 15,2004, Release of Non-ISFSI Site Land - FSS Final Report No. 2, Proposed Change No. 218, Supplement 4 Page 12

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A

17. USNRC Letter to Maine Yankee dated September 24, 2004, Request for Additional Information Regarding Final Status Survey (FSS) Final Report No. IA.
18. Maine Yankee Letter to USNRC, MN-04-052, dated October 12, 2004, Release of Non-ISFSI Site Land - FSS Final Report No. 3, Proposed Change No. 218, Supplement 5
19. Maine Yankee Letter to USNRC, MN-04-053, dated October 14, 2004, Release of Non-ISFSI Site Land - Addendum to FSS Final Report No. 1, Proposed Change No. 218, Supplement 6
20. USNRC Letter to Maine Yankee dated November 4, 2004, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement Nos. I and 3
21. Maine Yankee Letter to USNRC, MN-04-056, dated November 17, 2004, Release of Non-ISFSI Site Land - FSS Final Report No. 4, Proposed Change No. 218, Supplement 7
22. USNRC Letter to Maine Yankee dated November 17, 2004, Maine Yankee - NRC Inspection Report NO. 05000309/2004001 and NRC Office of Investigations Report No.

1-2004-001

23. USNRC Letter to Maine Yankee dated November 22, 2004, Correction to NRC Letter to Maine Yankee, dated November 17, 2004.
24. USNRC Letter to Maine Yankee dated November 30, 2004, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 2
25. USNRC Letter to Maine Yankee dated November 30, 2004, Receipt of Final Status Survey (FSS) Supplement No. 4.
26. Maine Yankee Letter to USNRC, MN-04-058, dated December 7, 2004, Response to NRC RAI's on FSS Report Nos. I and 3, Proposed Change No. 218, Supplement 8
27. Maine Yankee Letter to USNRC, MN-04-059, dated December 7,2004, Release of Non-ISFSI Site Land - FSS Final Report No. 5, Proposed Change No. 218, Supplement 9
28. Maine Yankee Letter to USNRC, MN-04-060, dated December 22, 2004, Release of Non-ISFSI Site Land - FSS Final Report No. 6, Proposed Change No 218, Supplement 10
29. Maine Yankee Letter to USNRC, MN-04-061, dated December 23, 2004, Response to NRC RAI's on FSS Report No. 2, Proposed Change No. 218, Supplement 11
30. USNRC Letter to Maine Yankee dated December 29, 2004, Receipt of Maine Yankee Final Status Survey Report Supplements 5 and 6
31. USNRC Letter to Maine Yankee dated January 5, 2005, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 4
32. USNRC Letter to Maine Yankee dated January 7, 2005, Receipt of Maine Yankee's Response to Request for Information on Final Status Survey Report Supplements 1 and 3
33. USNRC Letter to Maine Yankee dated January 19, 2005, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 2
34. Maine Yankee Letter to USNRC, MN-05-001, dated January 20, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 7, Proposed Change No. 218, Supplement 12
35. Maine Yankee Letter to USNRC, MN-05-002, dated January 26,2005, Technical Basis Document for NRC Review: Exploranium GR-130 Minimum Detectable Concentration (MDC) of Cs-137 and Co-60 in Surface Soil - 30 Day Notice per LTP Requirement
36. Maine Yankee Letter to the NRC, MN-05-003, dated January 26, 2005, Area Classification Change: Storm Drains (D3500) - Section 7 Page 13

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and IOA

37. Maine Yankee Letter to USNRC, MN-05-004, dated January 27,2005, Response to NRC RAI on FSS Report No. 4, Proposed Change No. 218, Supplement 13
38. USNRC Letter to Maine Yankee dated January 27, 2005, Receipt of Maine Yankee Final Report Supplement 7
39. USNRC Letter to Maine Yankee dated February 9, 2005, Response to Area Classification Change: Storm Drains (D3500)
40. Maine Yankee Letter to USNRC, MN-05-006, dated February 16, 2005, Response to NRC RAI's on FSS Final Report Nos. 1 and 2, Proposed Change No. 218, Supplement 14
41. Maine Yankee Letter to USNRC, MN-05-007, dated February 17, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 8, Proposed Change No. 218, Supplement 15
42. Maine Yankee Letter to USNRC, MN-05-008, dated February 23, 2005, Release of Non-ISFSI Land - FSS Final Report No. 8 - Attachment I, Figure 1 and 2 and Attachment II Header Page, Proposed Change No. 218, Supplement 16
43. Maine Yankee Letter to USNRC, MN-05-009, dated February 23, 2005, Response to NRC Comments on Maine Yankee Area Classification Change: Storm Drains (D3500) -

Section 7

44. USNRC Letter to Maine Yankee dated February 23, 2005, Receipt of Maine Yankee Responses to Requests for Additional Information Regarding Supplements 1 and 2 and Final Status Survey Report Supplement 8
45. USNRC Letter to Maine Yankee dated February 24, 2005, Acceptance of Maine Yankee Technical Basis Document for the Limited Use of the Exploranium GR-130 Instrument
46. USNRC Letter to Maine Yankee dated March 2, 2005 ', Approval of Final Status Survey Supplement No. 4
47. USNRC Letter to Maine Yankee dated March 13, 2005, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 5
48. USNRC Letter to Maine Yankee dated March 21, 2005, Storm Drain Area Survey Unit Classification Change
49. USNRC Letter to Maine Yankee dated March 28,2005, Review of Maine Yankee Response to NRC RAI"s on FSS Report Nos. 1 and 2
50. Maine Yankee Letter to USNRC, MN-05-015, dated April 7, 2005, Response to NRC RAI on FSS Final Report No. 5, Proposed Change No. 218, Supplement 17
51. Maine Yankee Letter to USNRC, MN-05-016, dated April 7, 2005, Release of Non-JSFSI Site Land - FSS Final Report No. 9, Proposed Change No. 218, Supplement 18
52. USNRC Letter to Maine Yankee dated April 7, 2005, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 6
53. Maine Yankee Letter to USNRC, MN-05-017, dated April 13, 2005, Response to NRC RAI of FSS Final Report Nos. 1 and 2, Proposed Change No. 218, Supplement 19
54. USNRC Letter to Maine Yankee dated April 15, 2005, Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Supplement No. 7
55. USNRC Letter to Maine Yankee dated May 3, 2005, Meeting Report for the April 19, 2005, Meeting with Maine Yankee Atomic Power Company (Maine Yankee) 1 This letter was erroneously dated "March 2, 2003" and should have been "March 2, 2005" Page 14

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A

56. Maine Yankee Letter to USNRC, MN-05-019, dated May 5, 2005, Response to NRC RAI on FSS Final Report No. 6, Proposed Change No. 218, Supplement 20
57. Maine Yankee Letter to USNRC, MN-05-020, dated May 5, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 9A, Proposed Change No. 218, Supplement 21
58. Maine Yankee Letter to USNRC, MN-05-23, dated May 10, 2005, Release of Non-ISFSI Site Land - FSS Final Report Nos. 1 and 2 - Resolution, Proposed Change No. 218, Supplement 22
59. USNRC Letter to Maine Yankee dated May 12, 2005, Approval of Final Status Survey Supplement Nos 8. and 9
60. Maine Yankee Letter to USNRC, MN-05-024, dated May 16,2005, Response to NRC RAI on FSS Final Report No. 7, Proposed Change No. 218, Supplement 23
61. Maine Yankee Letter to USNRC, MN-05-025, dated May 16, 2005, License Amendment Request: Release of Non-ISFSI Site Land, Proposed Change No. 218, Supplement 24
62. Maine Yankee Letter to USNRC, MN-05-026, dated May 17, 2005, Conditional Acceptance of FSS Final Reports,-Proposed Change No. 218, Supplement 25
63. Maine Yankee Letter to USNRC, MN-05-028, dated May 25, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 10, Proposed Change No. 218, Supplement 26
64. Maine Yankee Letter to USNRC, MN-05-031, dated June 20, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 1OA, Proposed Change No. 218, Supplement 27
65. USNRC Letter to Maine Yankee dated June 23, 2005, Request for Additional Information Regarding Maine Yankee Final Status Survey Report Supplement 9A
66. Maine Yankee Letter to USNRC, MN-03-051, dated September 3, 2003, Technical Basis Document for NRC Review: Forebay FSS Survey Measurement Methods (In situ gamma Spectroscopy) - 30 Day Notice per LTP Requirement
67. USNRC Letter to Maine Yankee dated September 30, 2003, Comments on Forebay FSS Survey Measurement Methods (In Situ Gamma Spectroscopy)
68. Maine Yankee Letter to USNRC, MN-03-067, dated October 21, 2003, Maine Yankee Response to NRC and State of Maine Comments on the Technical Basis Document for NRC Review: Forebay FSS Survey Measurement Methods (In situ gamma Spectroscopy)
69. Maine Yankee Letter to USNRC, MN-05-032, dated June 28,2005, Response to NRC RAI on FSS Final Report No. 9A, Proposed Change No. 218, Supplement 28
70. USNRC Letter to Maine Yankee dated June 30, 2005, Request for Additional Information Regarding Maine Yankee Final Status Survey Report Supplements 10 and 1OA Page 15

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A APPENDIX A Information Associated with NRC RAI Regarding SUPPLEMENT 10 FR-2900 SU 2 Railroad Tracks and Roadways NRC RAI No. 1 - FSS Final Report No. 10, Attachment 1, Section 5.1.4 Measurement Locations for ISOCS Results Presented in Table 1

DecoMnaissonnge nkTeam Maine Yankee DecommissioningProject Survey Map Map ID#VR2900-SITE SurveyType: [ Characterization [ Tumover

  • Final Status Survey Survey Area Name: Roads (Verification Survey)

BAILEY COVE I

f GRAPHIC SCALE (ft):

o50oo 200 300 400 500 600 700 800 900 1000

Maine Yankee I Decomrmissioning Team l Maine Yankee Decommissioning ProjectSurvey Map Map ID# VR2900-SCAN SurveyType: [] Characterization L Turnover

  • Final Status Survey SurveyArea Name: Roads (Verification Survey)

S03 9 03 8 8S0 40 5043 k iS 42

~0i Sooi RO° 002 S003

'A 004 50076 O @°S~~~

/'BSO SB So' 00o S0113

9) S012 OG+ + 9S S010lt S +< /S014 S015 S017 / 016 6++ SO018 S / &/ 'r S020192 6101> X S020 AA/Sob / S021 X S901i X7S S022

>A o / S0230 SQ76 X~sS024 S025 S077 .k -X S026

-2 /7m 5027 XS028 kI07 7 3.5m S029

/ x8i 7m S031 0 S082  ; X 0 SQ32 S083~X s S085 X 084 so S0S03g 34 S085 Roadway S035 0 so > (Scan Points approxmately SS036 S0o4 centered in each lane) S0 3 5089 x 3N SO9p ..

S091 x C n0 LO Io) C M LO o D - c S093 ( so 9I CO o)C CO nDC co n cOU Lon CO CO CO cO co (a xa E x xs  : )¢ )B 3< )E x Bt x )E xE )g RO 0 'O x x x x E Ex NON ) rn . _EN Nn x A

E:

A 0

N 3¢ N> xN^ _ N AA

%.J %14 1 wL  %.L C; CN "T C GU  %.J ;L4 ai CD) CD) U) CD) CO Ci) C) CIr C, U C4

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 1OA APPENDIX B Information Associated with NRC RAI Regarding SUPPLEMENT 10 FR-2900 SU 2 Railroad Tracks and Roadways NRC RAI No. 1 - FSS Final Report No. 10, Attachment 1, Section 5.1.4 SPA-3 Gamma Scan Survey Map showing the Results for Paved Areas & Adjacent Shoulders of Vehicle Travel Path

Maine Yankee RELIA6LE ELECTRICITY SINCE 1972 MANYAKEGNRLSRERCODOM Map#:MSC-O1 Date: Time: Reactor Pwr % Tech File Number. RWPs Used: Dose Received:

Revision#: 00 I (PI i-a S / Y 0 N/A 19.200.40.1 1 N/A mR Surv9yor Name (Printed) Survyyor N ignature) Location/Job

Description:

S.C4 . I**I= 41, RA Soil to ISFSI Travel Path 2

'Required R.P. eview Date Required ALARA Supervisor Review! Date REASON FOR SURVEY

  • 4.

Z!z3~!L L/,I I 66 -

N/A 0El El ROUTINE' El JOB-COVERAGE' SHIELDING' 2

  • OTHER, (Specify):

FSS Verfication INSTR ______ NSTRUMENTS USED CONTAMINATION RESULTS SYMBOL KEY Modde S S.id 5 Ca D- l UDA Li." S Sedl N C.I D- MDA SAMPLEN RESU7TS Contact exposure rates -

O6O I'A /1 2S.

/id& _ = _ = 0 Smear Location- (

gSSP 2;aS;3 I1- g OS Atoll

  • Boundary or barrler -X-X-C-)00 W4.6 -

401'  ; _ __

Doserate Large Area Smear- ~ #

5 5A-3 2( 9'_

_;_ __-_ /_ 0 Air Sample IAS 4'/, /9 _/ _ Sample Continuation Sheet Used? E Yes

_S~jA - SC &.-, _~r foF- ?ocJ OF- L( 4. S~4.PF -RA 1b4- nain

. //,& Pi)

P~o Areas o~ elev&&{e ac*W(/-> jewn,i ~ed'W.

Maine Yankee I MAINE YANKEE GENERAL SURVEY RECORD FORM Map#:MSC-001 Date: Time: Reactor Pwr %: Tech File Number: I RWPs Used: Dose Received:

Revisiont 00 6/22/05 Day Shift N/A 19.200.40.1 N/A mR Surveyor Name (Printed) I Surveyor LocationtJob

Description:

Lee Reid Jack Sprucinski . Soil to ISFSI Travel Path Steve Calinanr

'Required R.P. Review I ate f

/ 7 Required ALARA Supervisor Review! Date REASON FOR SURVEY N/A El ROUTINE' 0 JOB-COVERAGE' FSS Robert Tozzie I SHIELDING' I OTHER' (Specify): Verrication INSTRUMENTS USE INSTRUMENTS USED CONTAMINATION RESULTS SYMBOL KEY

&o.I 8 SeAM U Cal r, J MOA 3.odl 8 Selils . Cal Dr urDA SAMPLE U RESULS

  • Conbd exposure rates -

E600 2491 10/7/05 N/A SSPA-3 725329 11/24/05 N/A IL / Smear Location- i)

E600 2490 10/13105 N/A SSPA-3 726557 12/9/05 N/A / Boundary or barrier- -X-X-E600 1929 11/25/05 N/A SSPA-3 2253 11/9/05 N/A 0 Dose rate _

  • Large Area Smear -

GR-130 9955 3/21(06 N/A __\__ 0 Air Sample NA Sample Continuation Sheet Used? [j Yes Performed SSPA-3 scan of asphalt and road sides. Background varied across survey area and increased as the ISFSI was approached (as shown on map).

Several areas appeared to show 1 to 2 Kcpm greater than general background. These areas were marked for further evaluation.

Marked areas were evaluated using the GR-130. No plant related nuclides were identified in the GR-130 measurements (only naturally occuring nuclides were identified).

ATTACHMENT Maine Yankee Response to NRC Request for Additional Information (RAI) Regarding Final Status Survey (FSS) Final Report Nos. 10 and 10A APPENDIX C Information Associated with NRC RAI Regarding SUPPLEMENT 10A FR-2900 SU 3 Roads/Railroads NRC RAI No. 1 - FSS Final Report No. 10A, Attachment 1, Section 5.1.4 & Release Record FR-2900 SU3 Roads/Railroads, Section A Measurement Locations for ISOCS Results Presented in Table 2

Maine Yankee . IMap ID#: Venrfi Decommissioning Team A iane Yankee DecomnilisslonldigProjectSurvey Form Reference Map Survey Type: E Characterization l Turnover 1 Final Status Survey Survey Area Name: Roads and Rails xz IL-4 N

gl949, I

Maine Yankee Map IDC#VLI=HICrA Decommissioning Team M Aaine Yankee Decommissioning ProjectSurvey ForinI South of ISFS1 Survey Type: ElCharacterization El Turnover 9 VERIFICATION Survey Area Name: Rails (FR2900 SU3) 0 00 0 >

00 0 0 0 0 1 0o0 0 0 0 0 Ij I

0Oo 0

0 o0 0 7 1 0

0 k I0' 4 03' Is 0 ~0 0 0I 0: N Ok1 I

Maine Yankee Map ID#:VERIFIC Decommissioning Team Aianie Yankee DecommissioninigProjectSurvey FortI North of ISFSI Survey Type: OCharacterization E Turnover X VERIFICATION I Survey Area Name: Rails (FR2900 SU3)

I I'

4.S m

. I. -

I I

I I

Survey unit width 6meters wide centered on tracks.

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