RA-05-010, Release of Non-ISFSI Site Land - FSS Final Report No. 8 - Attachment I, Figures 1 and 2 and Attachment II Header Page

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Release of Non-ISFSI Site Land - FSS Final Report No. 8 - Attachment I, Figures 1 and 2 and Attachment II Header Page
ML050610497
Person / Time
Site: Maine Yankee
Issue date: 02/23/2005
From: Meisner M
Maine Yankee Atomic Power Co
To:
Document Control Desk, NRC/FSME
References
MN-05-008, RA-05-010
Download: ML050610497 (26)
v • d • e


Text

Maine Yankee 321 OLD FERRY RD.

  • WISCASSET. ME 04578-4922 February 23, 2005 MN-05-008 RA-05-010 Proposed Change No. 218, Supplement 16 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 the USNRC, MN-02-048, dated October 15, 2002, Revision 3, Maine Yankee's License Termination Plan (3) USNRC Letter to Maine Yankee, dated February 28, 2003, Issuance of Amendment No. 168 to Facility Operating License No. DPR-36 (4) Maine Yankee Letter to the USNRC, MN-04-020, dated March 15, 2004, License Amendment Request: Release of Non-ISFSI Site Land, Proposed Change No. 218 (5) Maine Yankee Letter to the USNRC, MN-05-007, dated February 17, 2005, Release of Non-ISFSI Site Land - FSS Final Report No. 8

Subject:

Release of Non-ISFSI Site Land - FSS Final Report No. 8 - Attachment I, Figure 1 and 2 and Attachment II Header Page On February 17, 2005, Maine Yankee submitted FSS Final Report No. 8 containing the dismantlement and summary survey information for twelve survey units. In the hard copy distribution of this submittal, Attachment I and the two header pages for Attachment II were inadvertently left out. Also, Figure 1 did not indicate that Little Oak Island was included in the final status survey of FR-0900. Figure 1 has now been corrected. Enclosed are the following portions of FSS Final Report No. 8: Attachment I, Figure 1 (corrected), Figure 2 and the header pages for Attachment II. Please include these in FSS Final Report No. 8.

If you have any questions, please contact me.

Sincerely, 61a LSf /VIT .M, Michael J. Meisner Vice President and Chief Nuclear Officer Attachments I. Final Status Survey Final Report No. 8 (including Figures 1 & 2)

II. Final Status Survey Release Records (header pages only) dYS4SOI

UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk Page 2 of 2 cc: Dr. R. R. Bellamy, NRC Region I 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 Acting 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

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I

1.0 DESCRIPTION

2 2.0 PROPOSED LICENSE CONDITION ------------------------------------------------- 2

3.0 BACKGROUND

3 4.0 SITE INFORMATION AND PHYSICAL DESCRIPTION ------------------------ 3 4.1 Physical Description of Land to be Released -------------------------------------- 3 4.1.1 Survey Unit Information Included in this Submittal ------------------------- 3 4.1.2 Survey Unit Information Provided in Subsequent Submittals -------------- 6 4.2 Dismantlement Activity -------------- 6 4.2.1 FB-1500 Warehouse 2/3 Footprint --------------------------------------------- 7 4.2.2 FD-0700 Fire Protection (Water) ----------------------------------------------- 7 4.2.3 FD-3500 Storm Drains ---------------------------------------------------------- 7 4.2.4 FR-0100 RCA Yard West ------------------------------------------------------- 8 4.2.5 FR-01 11 Yard West Excavations ----------------------------------------------- 8 4.2.6 FR-0200 Yard East -------------------------------------------------------------- 8 4.2.7 FR-0900 Balance of Plant Land ------------------------------------------------ 8 4.2.8 FR-2900 Railroad Tracks & Roadways --------------------------------------- 9

5.0 TECHNICAL EVALUATION

10 5.1 Potential for Cross-contamination from Subsequent Activities ----------------- 10 5.1.1 FB-1500 Warehouse 2/3 Footprint --------------------------------------------- 10 5.1.2 FD-0700 Fire Protection (Water) ----------------------------------------------- 10 5.1.3 FD-3500 Storm Drains ---------------------------------------------------------- 11 5.1.4 FR-0I00 RCA Yard West ------- -- 11--------------------------

5.1.5 FR-0 11 Yard West Excavations -----------------------------------------------11 5.1.6 FR-0200 Yard East --------------------------------------------------------------- 12 5.1.7 FR-0900 Balance of Plant Land ------------------------------------------------ 12 5.1.8 FR-2900 Railroad Tracks & Roadways --------------------------------------- 12 6.0 FINAL STATUS SURVEY REPORT -------------------------------------------------- 13 6.1 Overview of the Results ------------------------------------------------------------- 13 6.2 Discussion of Changes to FSS Program --------------------------------------------15 6.3 Final Status Survey Methodology ---------------------------------------------------15 6.4 Final Status Survey Results ---------------------------------------------------------- 17 6.5 Survey Unit Conclusions ------------------------------------------------------------ 18

7.0 REFERENCES

19 Figure 1 Survey Areas Figure 2 Survey Areas (Site Industrial Area)

Page 1 of 20

a.

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 1.0 Description This letter is submitted as a supplement to Proposed Change No. 218 (Reference 7.3), which requests an amendment to the Operating License No. DPR-36 for Maine Yankee, specifically License Condition 2.B(9), addressing release of lands from the jurisdiction of the Facility Operating License. Maine Yankee requested that the NRC review and approve the release of remaining land under License No. DPR-36 with the exception of the land where the Independent Spend Fuel Storage Installation (ISFSI) is located. 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. Maine Yankee is submitting the required dismantlement and survey information for the survey units that make up the non-ISFSI portion of the site land in a phased fashion. Other descriptive information and technical evaluations contained in Reference No. 7.3 are unaffected by these submittals and are, therefore, not included in this submittal, as indicated.

In this submittal, Maine Yankee is providing the dismantlement and survey information for eight areas (twelve survey units), as described in Table I in Section 4.1.1. Maine Yankee is providing this information to facilitate NRC review and acceptance. This written NRC acceptance must conclude, for the land associated with the release, that the remaining dismantlement has been performed in accordance with the approved license termination plan, and the terminal radiation survey and associated documentation demonstrates that the facility and site are suitable for release in accordance with the criteria for decommissioning in 10 CFR part 20, subpart E by meeting a site release criteria of 10 millirem TEDE per year over background (all pathways) with no more than 4 millirem (as distinguishable from background) TEDE per year from groundwater sources of drinking water in accordance with the approved License Termination Plan.

Reference 7.3 provided the information required by section 1.4 of Maine Yankee's License Termination Plan (LTP). LTP section 1.4 discusses the information to be provided in support of releasing land from the jurisdiction of License No. DPR-36 and also describes Maine Yankee's overall phased approach to releasing land. This submittal provides the dismantlement, FSS results, and recontamination prevention and control information required by LTP section 1.4 specific to the survey units covered in this submittal.

The information contained in this submittal, together with the information provided in the prior and subsequent supplemental phases will be sufficient for the NRC to make a determination equivalent to 10 CFR 50.82(a)(I 1) regarding the lands to be released from the license. Once these lands are so released, it is understood that the NRC will not require any additional surveys or decontamination of these areas unless the NRC determines that the criteria of I OCFR Part 20, Subpart E were not met and that residual activity remaining on the land could result in a significant threat to public health and safety.

2.0 Proposed License Condition The proposed wording for the license condition is provided in Reference 7.3 and is not affected by this supplement.

Page 2 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 3.0 Background Reference 7.3 transmitted an application to amend Maine Yankee's License No. DPR-36 to release the remaining non-ISFSI land from the jurisdiction of the license. The process for releasing land from Maine Yankee's license is established in section 1.4 of the License Termination Plan. This LTP section defines the information that will be provided to support release of land from Maine Yankee's license. This information, includes (1) a description of the boundaries associated with the area to be released, (2) discussion of dismantlement activities performed; (3) final status survey results; (4) evaluation of the potential for re-contamination and controls applied to prevent this; (5) an evaluation of the impact on the exclusion area for site lands remaining under the Part 50 license; (6) an evaluation of possible combined dose effects as a result of partial release; (7) an evaluation of potential impact on various licensee programs and; (8) a no significant hazards determination evaluation. Items (1), (5), (6), (7), and (8) are applicable to the License Amendment Request and the release of the entire remaining non-ISFSI land. Items (2), (3), and (4) are specific to each survey unit/area. This information is contained in this submittal for the survey units covered by this submittal.

4.0 Site Information and Physical Description 4.1 Physical Description of Land to be Released The land to be released is described in Reference 7.3 and is unchanged by this submittal.

4.1.1 Survey Unit Information Included in this Submittal As discussed in section 1.0 above, this submittal provides a discussion of demolition activities completed and final status survey results for the survey units located on the proposed land to be released. Details are provided for each survey unit on survey methods, results, data analysis, and conclusions. Additional information on all remaining survey units for the Non-ISFSI land areas will be provided in subsequent submittals. In all cases, Maine Yankee is providing sufficient information, as required, relating to each survey unit so that the NRC staff can verify that the License Termination Plan has been fully implemented for each survey area and that the final status survey results support unrestricted release of the land from License DPR-36 in accordance with the proposed license amendment.

Table 1 provides a description of the survey units addressed in this submittal.

Page 3 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I Table 1 - Survey Unit Description Survey Survey Class General Description of Survey Unit Area Unit FB-1500 1 3 Warehouse 2/3 Footprint - An area consisting of the sub-slab soil footprint and remaining concrete footings (3-ft. below grade) of Warehouse 2/3, located in the western portion of the site outside of the Industrial Area. The survey unit is approximately 2,550 m2 .

FD-0700 1 3 Fire Protection (Water) - This unit consists of the 12 inch diameter ring header that provided water to the fire protection system within the Protected Area of the site. The survey unit internal surface area is approximately 961 m2 .

FD-3500 3 1 Storm Drains - The footprint associated with buried storm drain piping which was excavated and removed prior to survey. This survey unit consists of the two portions of the excavated piping not surveyed as part of FR-01 11 Yard West Excavation survey area. The survey unit is approximately 295 m2 .

FR-0100 I 1 RCA Yard West - An area in the southwest corner of the original Restricted Area "backyard." The area was previously excavated and remediated as part of the decommissioning process. After remediation, the remaining soils were surveyed under final survey packages FR-O I1I Survey Units 4, 5, 6 and 7. Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.). Construction debris from Containment demolition activities was temporarily stored in the backfilled area. The debris and approximately 1 to 2 feet of fill material were subsequently removed. The footprint of this area became FR-0100 Survey Unit 1. The survey unit is approximately 1,845 m2 .

FR-0100 2 1 RCA Yard West - An area in the southeast corner of the original Restricted Area "backyard." The area was previously excavated to remediate the contaminated soil and the remaining terrain surveyed under final survey packages FR-0 11 Survey Units 3, 4 and 7. Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.). The survey unit is approximately 1,558 m2 .

FR-0100 3 1 RCA Yard West - An area located south of the former Containment Building and encompassed portions of areas that were originally surveyed under packages FR-0I 11-07, FR-1000-01, FR-0400-0l,and FR-0400-02.

Additionally, a portion of FR-0100 Survey Unit 3 was not originally included under any other survey package. The survey unit is approximately 1476 M2 .

FR-01 11 14 1 Yard West Excavations - A rectangular area (hole) created in part from the removal of three feet of sand from the Containment interior and the excavation and removal of the Containment walls and liner down to the 17 foot elevation. The survey unit is approximately 1475 m2 .

Page 4 of 20

Final Status Survey Final Rcport No. 8, Revision 0 ATTACHMENT I Table 1 - Survey Unit Description Survey Survey Class General Description of Survey Unit Area Unit FR-0200 1 3 Yard East - An area located in the southeast section of the site adjacent to the Back River. The area consisted of lands considered to be within the Protected Area of the plant, but outside the radiologically controlled Restricted Area. The survey unit is bordered by the Back River on the east, Bailey point on the south, the current RA fence on the west, and the former Circulating Water Pump House footprint on the north. The survey unit is approximately 10,520 m2 .

FR-0900 1 3 Balancd of Plant Land - An open land area surrounding the northern hemisphere of the industrial area, with some wooded locations also

__ included. The survey unit is approximately 71,050 m2 .

FR-0900 2 1 Balance of Plant Areas - The land area inclusive and adjacent to scan grid S103 of FR-0900 Survey Unit 1. The unit is approximately 104 m2 FR-0900 3 2 Balance of Plant Areas - An area located in Survey Area FR-0900 in the buffer area adjacent to the Restricted Area (RA) west of FR-0111 SU9 and southwest of FR-0100 SUL. This Class 2 Survey Unit is a 2 meter wide buffer area (strip) between the Class 1 RA Backyard and the adjacent Class 3 open land area. The unit is approximately 282 m2 .

FR-2900 1 3 Railroad Tracks & Roadways (East Access Road) - An area consisting of the East Plant Access Road and adjoining parking lots located along the Back River. The unit is approximately 8,878 m2 .

These areas and locations of these survey units are shown in Figure 1. The cross-hatched portions of the site represent the areas for which detailed dismantlement and survey information is being provided in this submittal. Shaded areas in Figure 1 represent those included in previous submittals. See Figure 2 for an expanded scale illustration, showing the site's industrial area.

Page 5 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 4.1.2 Survey Unit Information Being Provided in Subsequent Submittals As discussed above, Maine Yankee will provide additional submittals of detailed information on dismantlement activities and final status survey results as these activities are completed. Below is a list of the Survey Areas that remain to be submitted along with an expected schedule for submittal. The schedule indicates the changes to the schedule from that provided in Reference No. 7.25. These survey areas encompass the remaining survey areas specified in the Maine Yankee License Termination Plan that have not yet been submitted. The actual submittal schedule, the grouping and scope of survey areas, and sequence of these survey areas, is subject to adjustment based upon the progress of dismantlement, remediation and survey activities.

Ninth Submittal Scheduled for 319/05 FA-0400 Fuel Storage Building (FSB)

FD-0600 Service Water Piping FD-3500 Storm Drains -3 Survey Units (SU 1, 2 and 4 moved from Eighth Submittal)

FR-0200 Yard East - 2 Survey Units [2 and 3]'

FR-0220 Spare Transformer Pad Footprint (moved from Eighth Submittal)

FR-0800 Administration and Parking Areas FR-2600 Duct Banks (buried)

FR-0 11 Yard West Excavations - 5 Survey Units [11, 12, 15, 16, 17]

Tenth Submittal Scheduled for 4/19/05 FR-01 11 Yard West Excavations - 3 Survey Units (Moved from Ninth Submittal) [18, 19, 20]

FR-0200 Yard East - 6 Survey Units (Moved from Ninth Submittal) [4 through 9]

FR-2900 Railroad Tracks & Roadways - 2 3 Survey Units (SUI Moved to Submittal Eight) 4.2 Dismantlement Activities The Maine Yankee License Termination Plan (LTP) describes the dismantlement activities to be performed for each structure and area of the Maine Yankee plant. In general, the LTP indicates that structures will be demolished to an elevation corresponding to three feet below grade. A few structures will remain in-place including the 345 kV switchyard and associated relay house.

The LTP stated the possibility of other structures, such as the Warehouses and Staff Building, to be left standing following successful completion of final status surveys. The Warehouses and Staff Building have now been demolished. The former Low Level Waste Storage Building, now the ISFSI Security Operations Building (SOB), will remain in-place until fuel is transferred to the United States Department of Energy and will be dismantled and/or released concurrent with FSS of the ISFSI and license termination. Portions of the west plant access road will remain in-place to service the ISFSI and/or other future uses of the site. Since Old Ferry Road is a public road, it will also remain in-place. Certain below grade structural remnants and buried/embedded piping will remain in-place as described in LTP section 3.2.4.

Page 6 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I Various options for sequencing building demolition and final status survey activities are established for buildings within the Restricted Area. Typically, a final status survey is conducted on building basement surfaces before fill material is placed in the basement. The fuel building will be demolished to bedrock, except for the fuel pool slab, and surveyed as an excavation prior to backfill. Routine communications are held with State of Maine and NRC representatives to facilitate scheduling of State and NRC surveys, as necessary.

This section reviews the activities that have been performed for the survey area(s) included in this submittal.

4.2.1 FB-1500 Warehouses 2/3 Footprints As described in section 3.2.4 of the LTP, Maine Yankee may determine that site warehouses can remain standing, after radiological release for unrestricted use. However, it was decided to demolish Warehouses 2/3, including the building slabs. All demolition activities associated with the Warehouses 2/3 have been completed. Structures were demolished down to 3' below grade. Some footings and concrete structural remnants remain (3' below grade and lower). Surveys were performed on the foundation footprints.

4.2.2 FD-0700 Fire Protection Buried Piping As described in section 3.2.4 of the LTP, buried Fire Protection piping was to be left in-place. However, in the process of other demolition activities, such as soil and foundation excavations, certain portions of the buried Fire Protection piping were removed. In some cases, the excavations created conditions that raised personnel safety concerns, preventing safe and convenient access to piping in-place for FSS purposes. To accomplish FSS, certain sections of this piping were removed and placed in a clean trailer for survey. In order to prepare the pipe surface for FSS, technicians removed mud and debris which intruded into the pipe as a result of pipe removal.

4.2.3 FD-3500 Storm Drains Per LTP 5-lE, the Storm Drains systems consisted of both Class I and Class 3 areas.

As discussed in section 3.2.4 of the LTP, portions of the storm drain system piping serving the site radiologically Restricted Area (that is, "Hot Side" storm drains) were to be decontaminated, if required, and left in place. The storm drain system outside the Restricted Area (that is "Cold Side storm drains), were to be left in place with the following caveats: All catch basins and manholes will be cleaned out, demolished to three feet below grade, and backfilled.

Storm drains are currently in the process of being removed. Upstream manholes and catch basins will be removed. In general, piping outside the Restricted Area (RA) will remain in-place. One segment of piping (outside the RA) was removed for FSS purposes.

Piping in storm drains in Class I areas (that is, inside the original RA) has been or will be Page 7 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I removed. The last section of piping at the discharge to Outfall 6 has been removed. The trench excavation was subject to FSS and backfilled with rip-rap material.

This report includes the FSS for a single survey unit from this area, Survey Unit 3. All the piping associated with this unit was removed. The FSS of the other survey units will be reported in subsequent submittals.

4.2.4 FR-0100 RCA Yard West This report includes release records for certain survey units from Survey Area FR-0 100.

The areas covered by these survey units are located above excavations of structures or systems requiring dismantlement.

Portions of the area were used for temporary storage of materials related to the spent fuel pool demolition. Prior to the commencement of FSS, the equipment was removed, and a small layer of surface soil was removed and disposed.

4.2.5 FR-011 Yard West Excavations Survey Area FR-01 11 addresses FSS in a number of soil remediation areas within the site's radiologically RA and is comprised of twenty survey units.

This report includes the FSS for a single survey unit from this area, i.e., Survey Unit 14.

The FSS of the other survey units from FR-0 11 have either been reported in previous submittals, or will be reported in subsequent submittals.

Dismantlement activities for this survey unit involved demolition of above grade structures of the Containment Building, Main Steam and Valve House, Reactor MCC Room, and Emergency Feed Water pump Room. This survey unit included surface and subsurface excavations as required to remediate contaminated soils, structures and piping.

4.2.6 FR-0200 Yard East (1 Survey Unit)

Survey Area FR-0200 addresses the FSS of a large of portion of the industrial area east of the power block area but outside the RA. The survey unit included in this report involved no building and structure dismantlement except for the fuel oil storage bunker.

Equipment, vehicles, and material supporting the forebay remediation were located in this area but were removed prior to FSS.

4.2.7 FR-0900 Balance of Plant Land The survey area consisted of site land outside the RA, spanning the area south of the 345 kV switchyard on the west over to the eastern shore adjacent to and including Little Oak Island. The survey area did not include warehouse or annex footprints since they are address in separate, designated survey areas. The only structure removed was the site lunch vendor facility, i.e., a trailer on the eastern side of the site. The trailer was removed.

Page 8 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I The survey area involved no other structure or equipment removal activity. Roads and parking areas are not included and will be addressed in a separate, designated survey area, i.e., FR-2900.

4.2.8 FR-2900 Railroad Tracks & Roadways As noted in LTP Table 5-IC and discussed in LTP section 5.2.3, Survey Area FR-2900 was established as a means to manage the final surveys of roads and rail areas traversed throughout the demolition project. This report includes one survey unit involving an area to the north of the owner controlled area, along the plant access road, near the public Old Ferry Road. Demolition involved the removal of portions of asphalt to support FSS.

Some asphalt remained due to stability considerations for the adjacent public road.

Remaining FR-2900 survey units will be reported in subsequent submittals.

Page 9 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 5.0 Technical Evaluation 5.1 Potential for Cross-contamination from Subsequent Activities Since decommissioning activities are being conducted onsite in parallel with final status survey and release decisions, measures must be taken to protect survey areas from contamination during and subsequent to the final status survey (FSS). Maine Yankee LTP sections 3.5.6, 5.1.2 and 5.1 1 describe contamination and access controls measures and periodic routine monitoring practices to prevent and/or detect the re-contamination of survey areas during or following FSS.

These requirements are implemented, as appropriate, through established procedures and were summarized in Reference 7.3.

The potential for re-contamination and the contamination controls/monitoring for the specific survey areas included in this release phase are discussed and evaluated below:

5.1.1 FB-1500 Warehouses 2/3 Footprints The footprints associated with Warehouses 2/3 were determined to be Class 3 and did not require remediation. Following the completion of FSS in the building structure footprints, the footprints were brought up to approximately grade level. This area is outside of the RA to the west and will be subject to routine contamination control surveys to ensure that decommissioning activities have not introduced recontamination of the footprint. In addition, standard controls and procedures were implemented including provisions for access control and postings.

5.1.2 FD-0700 Fire Protection Buried Piping Per LTP Table 5-lE, buried piping of the Fire Protection system was determined to be Class 3, consistent with its service and location outside and beneath the plant's RA. As discussed in the associated release record, sufficient piping portions were surveyed to further confirm the lack of residual plant-derived activity. In addition, soil areas of around known breaks in this piping were exposed during the soil excavation and remediation process. Soil measurements from these areas provided no indication of excessive activity in the soil.

Given that portions of piping have been removed, there can no longer be flow within the system. Soil excavations are backfilled after FSS is completed. The surface area above remaining piping will be incorporated into the appropriate soil survey unit. The area, following FSS and backfill, will be subject to routine contamination control surveys to ensure that decommissioning activities have not introduced recontamination to the area.

In addition standard controls and procedures were implemented including provisions for access control and postings.

Page 10 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 5.1.3 FD-3500 Storm Drains Per LTP Table 5-1E, the Storm Drains systems consisted of both Class I and Class 3 areas. While some portions were determined to be Class 1, soil sampling from the various excavations in the area of storm drain system components (manholes and/or piping) did not indicate substantial residual plant-derived activity. Class I storm drains were removed.

Given the removal and backfill of manholes and catch basins, as well as the removal of certain portions of piping, there no longer can be flow within the system. Soil excavations have been backfilled. The surface area above remaining piping will be incorporated into the appropriate soil survey area. The area, following backfill, will be subject to routine contamination control surveys to ensure that decommissioning activities have not introduced recontamination to the area. In addition, standard controls and procedures were implemented including provisions for access control and postings.

5.1.4 FR-0 100 RCA Yard West The area will be subject to routine contamination control surveys to ensure that decommissioning activities have not introduced recontamination to the area. In addition, standard controls and procedures were implemented including provisions for access control and postings.

As an additional control measure, following FSS of these survey units, the site RA boundaries were revised to reduce the overall size of the RA. As a result, the subject FR-0100 survey unit areas, were no longer within the RA. This action not only provides for improved management and control of activities (within a smaller RA) but also further reduces the possibility of vehicles traversing and contaminating the subject FR-0100 survey unit areas.

5.1.5 FR-Ol 11 Yard West Excavations (Referred to as Soil Remediation Areas in earlier submittals)

Contamination controls for the soil remediation areas required special measures due to the proximity of other demolition and excavation work on-going in adjacent survey units and to manage water from both rain and groundwater sources.

1. In general, standard access controls and posting requirements were implemented following the completion of excavation.
2. Buffer zones were established around excavation areas to minimize the potential for foreign material to be inadvertently moved into the excavation.
3. As a general practice, backfilling was accomplished as expeditiously as possible, to minimize the duration that the excavation was open.
4. Due to rainwater and groundwater intrusion, a number of water management measures were instituted. Dikes were used around the open excavation to minimize rainwater accumulation within the excavation. Pooled water in the Page 11 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I excavation was sampled, processed, and discharged, meeting applicable discharge permit requirements.

As an additional control measure, following FSS of these survey units, the site RA boundaries were revised to reduce the overall size of the RA. As a result, the subject FR-0111 survey unit areas were no longer within the RA. This action not only provides for improved management and control of activities (within a smaller RA) but also further reduces the possibility of vehicles traversing and contaminating the subject FR-01 11 survey unit areas.

5.1.6 FR-0200 Yard East This associated survey unit area is inside the industrial area, to the east of the power block but outside of the RA. Following FSS of the survey unit area reported here, standard controls and procedures were implemented including provisions for access control, postings, and routine surveys.

5.1.7 FR-0900 Balance of Plant Land The bulk of the FR-0900 was a Class 3 area, A small portion was designated as Class 1.

Following FSS of the survey unit areas reported here, standard controls and procedures were implemented including provisions for access control, postings, and routine surveys.

This report covers the two initially defined survey units for FR-0900. There was a third survey unit added as a Class 2 buffer zone along the RA fence line and Foxbird Island.

The FSS of this FR-0900 survey unit is also included in this submittal.

5.1.8 FR-2900 Railroad Tracks & Roadways FR-2900 is a Class 3 area. Following FSS of the survey unit area reported here, standard controls and procedures were implemented including provisions for access control, postings, and routine surveys.

Page 12 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 6.0 Final Status Survey Report Maine Yankee LTP section 5.9.3 identifies the contents of the written reports of final status survey results that are to be submitted to the NRC. These contents include the items described in NUREG 1757, Vol. 2, Section 4.5 (Reference 7.6). The survey unit design information and survey results are provided below in summary fashion. Specific survey unit design details and results are provided in a copy of each survey unit release record in Attachment II of this submittal.

6.1 Overview of Results The following survey units are included in this report:

1. FB-1500-SU-1 Warehouse 2/3 Footprint - An area consisting of the sub-slab soil footprint and remaining concrete footings (3-ft. below grade) of Warehouse 2/3, located in the western portion of the site outside of the Industrial Area.
2. FD-0700-SU-1 Fire Protection (Water) - This unit consists of the 12 inch diameter ring header that provided water to the fire protection system within the Protected Area of the site. .
3. FD-3500-SU-3 Storm Drains - The footprint associated with buried storm drain piping which was excavated and removed prior to survey. This survey unit consists of the two portions of the excavated piping not surveyed as part of FR-01 I I Yard West Excavation survey area.
4. FR-O100-SU-1 RCA Yard West - An area in the southwest comer of the original Restricted Area "backyard." The area was previously excavated and remediated as part of the decommissioning process. After remediation, the remaining soils were surveyed under final survey packages FR-01 I I Survey Units 4, 5, 6 and 7. Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.). Construction debris from Containment demolition activities was temporarily stored in the backfilled area.

The debris and approximately I to 2 feet of fill material were subsequently removed. The footprint of this area became FR-0100 Survey Unit 1.

5. FR-0100-SU-2 RCA Yard West - An area in the southeast comer of the original Restricted Area "backyard." The area was previously excavated to remediate the contaminated soil and the remaining terrain surveyed under final survey packages FR-OI I I Survey Units 3, 4 and 7.

Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.).

6. FR-0100-SU-3 RCA Yard West - An area located south of the former Containment Building and encompassed portions of areas that were originally surveyed under packages FR-01 11-07, FR-1000-01, FR-0400-0l,and FR-0400-02. Additionally, a portion of FR-Page 13 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 0100 Survey Unit 3 was not originally included under any other survey package.

7. FR-0111-SU-14 Yard West Excavations - A rectangular area (hole) created in part from the removal of three feet of sand from the Containment interior and the excavation and removal of the Containment walls and liner down to the 17 foot elevation.

8.FR-0200-SU-1 Yard East - An area located in the southeast section of the site adjacent to the Back River. The area consisted of lands considered to be within the Protected Area of the plant, but outside the radiologically controlled Restricted Area. The survey unit is bordered by the Back River on the east, Bailey point on the south, the current RA fence on the west, and the former Circulating Water Pump House footprint on the north.

9. FR-0900-SU-1 Balance of Plant Land - An open land area surrounding the northern hemisphere of the industrial area, with some wooded locations also included.
10. FR-0900-SU-2 Balance of Plant Areas - The land area inclusive and adjacent to scan grid S103 of FR-0900 Survey Unit 1.
11. FR-0900-SU-3 Balance of Plant Areas - An area located in Survey Area FR-0900 in the buffer area adjacent to the Restricted Area (RA) west of FR-0111 SU9 and southwest of FR-0100 SU1. This Class 2 Survey Unit is a 2 meter wide buffer area (strip) between the Class I RA Backyard and the adjacent Class 3 open land area.
12. FR-2900-SU-1 Railroad Tracks & Roadways (East Access Road) - An area consisting of the East Plant Access Road and adjoining parking lots located along the Back River.

The release record for each survey unit contains a description of the survey unit; design information including classification, size, number of measurements, map, scan coverage, and DCGL; survey results; survey unit investigations (anomalous data); data assessment results, including statistical evaluations, if applicable and a simplified general retrospective dose estimate; changes in initial survey unit assumptions on extent of residual activity, an evaluation of LTP changes subsequent to the FSS of the survey unit and survey unit conclusions.

Overall, the release records for these survey units demonstrate that they meet the criteria for release for unrestricted use in accordance with the NRC approved Maine Yankee License Termination Plan.

Page 14 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 6.2 Discussion of Changes to FSS Program The purpose of this section is to discuss changes to the FSS program. Relevant NRC guidance documents (Reference Nos. 7.5 and 7.6) recommend a discussion of any changes that were made in the final status survey from what was proposed in the decommission plan or other prior submittals. Since Maine Yankee began performing final status survey activities prior to NRC approval of the LTP, some of the elements of the FSS program described in the approved LTP are different than those used in the design and conduct of early FSS activities. Some changes to the LTP were made following NRC approval using the change process outlined in the license condition and described in LTP section 1.4.1. In addition, some changes to the FSS program may be associated with a License Amendment Request to the LTP made in accordance with 10 CFR 50.90. The key FSS program changes that might impact completed FSS surveys covered in this Final FSS Report were included in Reference Nos. 7.3 and 7.4. The impacts of applicable changes on each survey unit are discussed in the survey units' release record provided in Attachment II.

6.3 Final Status Survey Methodology This section summarizes the implementation of the LTP Final Status Survey methodology for the survey units that are included in this report supporting the release of remaining non-ISFSI site land. Table 2 lists the key FSS design features for each survey unit. These design features include the survey unit classification and size, the standard deviation and Lower Boundary of the Gray Region (LBGR) used for determining the number of static measurement taken, the percent scan coverage, the Derived Concentration Guideline Limit (DCGL), the design DCGLEMC', and the number of measurements required.

Table 2 - Survey Unit Final Parameters Survey lass Survey Standard LBGR DCGL Design Units No.  % Scan Unit Unit Size Deviation DCGLEMXC Meas.

FB-1500 Warehouse 2/3 Footprint I 1 3 l 2,550 l 0.23 3.51 4.2 NA pCi/gCs-137 14 10.6 FD-0700 Fire Protection aWater) 1 l 3 l 961 Note 1 Note 1 9800 NA dpm/IOOcml 30 10 FD-3500 Storm Drains 3 1 295 j 1.33 j 1.2 2.39 6.69 pCi/gCs-137 1 40 [ 100 0.86 2.41 pCilg Cs-60 FR-0100 RCA Yard 'West I I 1,845 l llll 1.33 1.2 02.39 0.86 l 13.59 1.29 f pCi/gCs-137 lpCi/g Cs-60 ll 40 100 XDCGLEMC: Derived Concentration Guideline Limit for the Elevated Measurement Comparison Page 15 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I Table 2 - Survey Unit Final Parameters Survey Class Survey Standard LBGR DCGL Design Units No.  % Scan Unit Unit Size Deviation DCGLEI:c Aleas.

2 1 1,558 Note 2 Note 2 2.39 6.0 pCi/g Cs-*137 142 100 0.86 2.15 pCi/g Cs-60 Note 2 3 I 1476 1.33 1.2 2.39 3.82 pCi/g Cs-137 40 100 0.86 1.38 pCi/g Cs-60 FR-O111 Yard WVest Excavations 14 1 1475 1.33 1.2 2.39 3.9 pCi/gCs-137 40 100 l l l 0.86 1.4 pCig Cs-60 FR-0200 Yard East 1 3 l 10,520 0.17 3.69 4.2 N/A pCi/gCs-137 14 10 FR-0900 Balance of Plant Land 1 3 71,050 0.48 2.76 4.2 N/A pCifgCs-137 14 5.2 2 1 104 0.48 2.76 4.2 11.76 pCi/g Cs-137 14 100 3 2 282 1.33 2.1 4.2 N/A pCi/g Cs-137 18 100 I_ 1.52 pCi/g Cs-60 Note 3 FR-2900 Railroad Tracks & Roadways 1 I 3 l 8,878 0.23 1 3.5 4.2 N/A pCi/gCs-137 14 65 Note 1: The number of direct measurements was based on Attachment 5A of the LTP Note 2: Given a relative shift of 0.8, it was determined that 40 direct measurements were required for the Sign Test. A decision to use E-600/SPA-3 instrumentation for scan surveys in FR-0100 Survey Unit 2 affected the number of direct measurements to be performed due to the scan MDC of the instrumentation (5.9 pCi/g Cs-137, per LTP Table 5-6). As a result, a minimum of 142 samples were required.

Note 3: 100% of exposed surfaces within the survey unit.

Page 16 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT 1 6.4 Final Status Survey Results The methods used to determine the number of static measurements to be taken are described in the LTP and the specific survey unit release records provided in Attachment 1I.

Table 3 - Survey Unit FSS Results Survey Class No of Static Mean Maximum Standard Units No. Scan Unit Meas. Sample Sample Deviation Elevated Taken (see units) (see units) (see units) Areas (Note 1)

FB-1500 Warehouse 2/3 Footprint 1 3 l 14 4.26E-02 5.59E-02 5.51E-03 pCi/gCs-137 0 FD-0700 Fire Protection (Water)

I 1 3 l 30 788 989 97 dpm/lOOcm 0 FD-3500 Storm Drains 3 1I l 43 8.31E-02 3.98E-01 8.43E-02 pCi!g Cs-137 0 FR-0100 RCA Yard WVest 1 1 40 8.46E-02 4.59E-01 1.lOIE-01 pCi/g Cs-137 0 2 1 154 9.24E-02 3.20E-01 I 3.42E-02 Unitized 0 3 1 43 9.70E-02 1.17E+00 1.71E-01 pCi/g Cs-137 0 FR-011 1 Yard West Excavations 14 1 l 41 8.30E-02 2.73E-01 3.48E-02 Unitized 0 FR-0200 Yard East 1 3 14 9.69E-02 5.82E-01 1.40E-01 pCi/g Cs-137 0 FR-0900 Balance of Plant Land 1 3 19 2.03E-01 1.7013+00 3.9613-01 lpCi/g Cs-137 0 1 20 5.39E-02 6.93E-02 6.46E-03 pCilg Cs-137 s 0 3 2 19 3.57E-01 1.08E+00 3.18E-01 pCi/g Cs-137 0 FR-2900 Railroad Tracks & Roadways 1 3 14 4.67E-02 5.34E-02 3.32E-03 pCig Cs-137 0 Note 1: This column (No. Scan Elevated Areas) indicates the number of verified scan alarms whose post investigation, as-left, contamination level exceeded the DCGL (or unity for multiple nuclides).

Page 17 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT 1 6.5 Survey Unit Conclusions Maine Yankee concludes that this information is sufficient for the NRC to make a determination equivalent to 10 CFR 50.82(a)(l 1) regarding the survey units contained in this submittal. The surveys for these survey units and associated documentation demonstrate that these areas of the facility and site are suitable for release in accordance with the criteria for decommissioning in 10 CFR part 20, subpart E by meeting a site release criteria of 10 millirem TEDE per year over background (all pathways) with no more than 4 millirem (as distinguishable from background)

TEDE per year from groundwater sources of drinking water in accordance with the approved License Termination Plan.

Page 18 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I 7.0 References 7.1 Maine Yankee Letter to USNRC dated October 15, 2002, "Revision 3, Maine Yankee's License Termination Plan", MN-02-048 7.2 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 (TAC No. M8000) - Approval of the MY License Termination Plan 7.3 Maine Yankee Letter to the USNRC, MN-04-020, dated March 15, 2004, License Amendment Request: Release of Non-ISFSI Site Land, Proposed Change No. 218 7.4 Maine Yankee Letter to the USNRC, MN-04-03 1, dated May 6, 2004, Release of Non-ISFSI Site Land - FSS Final Report No. IA, Proposed Change No. 218, Supplement 1 7.5 USNRC, NUREG 1727 "NMSS Decommissioning Standard Review Plan" 7.6 USNRC, NUREG 1757 "Consolidated NMSS Decommissioning Guidance" 7.7 USNRC, NUREG 1575 "Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM)" Revision 1 dated October 18, 2000, supplemented June 2001 7.8 Maine Yankee Letter to the 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 7.9 Maine Yankee Letter to the USNRC, MN-04-047, dated September 2, 2004, License Amendment Request - Release of Non-ISFSI Site Lands, Proposed Change No. 218, Supplement 3 7.10 Maine Yankee Letter to the USNRC, MN-04-49, dated September 15, 2004, Release of Non-ISFSI Site Land - - FSS Final Report No. 2, Proposed Change No. 218, Supplement 4 7.11 Maine Yankee Letter to the 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 7.12 Maine Yankee Letter to the 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 7.13 Maine Yankee Letter to the 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 7.14 Maine Yankee Letter to the USNRC, MN-04-035, dated May 13, 2004, Area Classification Change: Containment Foundation Drain 7.15 Maine Yankee Letter to the USNRC, MN-02-063, dated December 12, 2002, Update on Forebay Dike Coring Results and Associated Changes to LTP Attachment 2H (LTP Revision 3 Addenda) 7.16 Maine Yankee Letter to the USNRC, MN-03-004, dated January 21, 2003, Forebay Remediation Plan Phase 2 7.17 Maine Yankee Letter to the USNRC, MN-03-049, dated September 11, 2003, Proposed Change: Revised Activated Concrete DCGL and More Realistic Activated Concrete Dose Modeling - License Condition 2.B.(10), License Termination 7.18 USNRC Letter to Maine Yankee dated February 18, 2004, Issuance of Amendment No.

170 to Facility Operating License No. DPR Maine Yankee Atomic Power Station (TAC NO. M8000) 7.19 Maine Yankee Letter to the 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 7.20 Maine Yankee Letter to the USNRC, MN-03-051, dated September 3, 2003, Technical Page 19 of 20

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT I Basis Document: Forebay FSS Survey Measurement Methods (In Situ Gamma Spectroscopy) - 30 Day Notice LTP Requirement 7.21 Maine Yankee Letter to the USNRC, MN-03-067, dated October 21, 2003, Maine Yankee Response to NRC and State of Maine Comments on the Technical Basis Document: Forebay FSS Survey Measurement Methods (In Situ Gamma Spectroscopy) 7.22 Maine Yankee Letter to the USNRC, MN-02-063, dated December 12, 2002, Update on Forebay Dike Coring Results and Associated Changes to LTP Attachment 2H (LTP Revision 3 Addenda) 7.23 Maine Yankee Letter to the 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 7.24 Maine Yankee Letter to the USNRC, MN-04-061, dated December 23, 2004, Response to NRC RAIs on FSS Report No. 2, Proposed Change No. 218, Supplement 11 7.25 Maine Yankee Letter to the 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 Page 20 of 20

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N3 C - Survey Unit 3 FB1500 - warehouse 2 (D - Survey Unit 1

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT II Final Status Survey Releasc Rccords

1. FB-1500-SU-1 Warehouse 2/3 Footprint - An area consisting of the sub-slab soil footprint and remaining concrete footings (3-ft. below grade) of Warehouse 2/3, located in the wvestern portion of the site outside of the Industrial Area.
2. FD-0700-SU-1 Fire Protection (Water) - This unit consists of the 12 inch diameter ring header that provided water to the fire protection system within the Protected Area of the site.
3. FD-3500-SU-3 Storm Drains - The footprint associated with buried storm drain piping which was excavated and removed prior to survey. This survey unit consists of the two portions of the excavated piping not surveyed as part of FR-01 II Yard West Excavation survey area.
4. FR-0100-SU-1 RCA Yard West - An area in the southwest comer of the original Restricted Area "backyard." The area was previously excavated and remediated as part of the decommissioning process. After remediation, the remaining soils were surveyed under final survey packages FR-O1 11 Survey Units 4, 5, 6 and 7. Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.). Construction debris from Containment demolition activities was temporarily stored in the backfilled area.

The debris and approximately 1 to 2 feet of fill material were subsequently removed. The footprint of this area became FR-0100 Survey Unit 1.

5. FR-0100-SU-2 RCA Yard West - An area in the southeast comer of the original Restricted Area "backyard." The area was previously excavated to remediate the contaminated soil and the remaining terrain surveyed under final survey packages FR-01I I Survey Units 3, 4 and 7.

Following final survey of the excavations, the area was backfilled to grade (approximate 20-ft. El.).

6. FR-0100-SU-3 OOOOORCA Yard West - An area located south of the former Containment Building and encompassed portions of areas that were originally surveyed under packages FR-01 11-07, FR-I000-01, FR-0400-0l,and FR-0400-02. Additionally, a portion of FR-0100 Survey Unit 3 was not originally included under any other survey package.
7. FR-0111-SU-14 Yard West Excavations - A rectangular area (hole) created in part from the removal of three feet of sand from the Containment interior and the excavation and removal of the Containment walls and liner down to the 17 foot elevation.
8. FR-0200-SU-1 Yard East - An area located in the southeast section of the site adjacent to the Back River. The area consisted of lands considered to be within the Protected Area of the plant, but outside the radiologically controlled Restricted Area. The survey unit is bordered by the Back River on the east, Bailey point on the south,

Final Status Survey Final Report No. 8, Revision 0 ATTACHMENT II Final Status Survey Release Records the current RA fence on the west, and the former Circulating Water Pump House footprint on the north.

9. FR-0900-SU-1 Balance of Plant Land - An open land area surrounding the northern hemisphere of the industrial area, with some wooded locations also included.
10. FR-0900-SU-2 Balance of Plant Areas - The land area inclusive and adjacent to scan grid S103 of FR-0900 Survey Unit 1.
11. FR-0900-SU-3 Balance of Plant Areas - An area located in Survey Area FR-0900 in the buffer area adjacent to the Restricted Area (RA) west of FR-0111 SU9 and southwest of FR-0 100 SU 1. This Class 2 Survey Unit is a 2 meter wide buffer area (strip) between the Class 1 RA Backyard and the adjacent Class 3 open land area.
12. FR-2900-SU-1 Railroad Tracks & Roadways (East Access Road) - An area consisting of the East Plant Access Road and adjoining parking lots located along the Back River.
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