ML031010398

Proposed License Amendment - License Termination Plan, Chapter 2, Appendix 2-C Through 2-E

ML031010398
Person / Time
Site:	Big Rock Point  File:Consumers Energy icon.png
Issue date:	04/01/2003
From:	Haas K Consumers Energy
To:	Document Control Desk, NRC/FSME
References
-RFPFR
Download: ML031010398 (151)

Text

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-C, Legacy Materials Evaluation Ground Penetrating Radar Survey The ground penetrating radar (GPR) survey was conducted using a Geophysical Survey Systems, Sir System 2 test instrument for the investigation of potential subsurface anomalies. The sensitivity of this instrument under site-specific soil conditions was sufficient to define anomalies to a depth of 10 feet. Survey findings were evaluated for valid positive anomalies and trending. Backhoe excavation and hand digging were then used to investigate the locations of positive indication. Coarse vegetation (small trees and brush) and sharp elevation changes due to rough terrain precluded GPR survey in some areas. Where these conditions were present, investigations were performed by exploratory excavation and the direct movement of soil by hand digging or heavy earth moving equipment.

All unearthed construction materials were removed and evaluated under existing procedures for materials release. Gamma spectroscopy was judgmentally performed on samples of soil found in direct contact with excavated debris at suspect locations.

Radioactivity resulting from plant operational activities was not identified at any survey location in this investigation. The findings of this evaluation are detailed below by individual area survey.

Survey Unft 12 Survey unit 12 is a flat, grassy strip of level terrain located directly north of the plant between the Protected Area fence and Lake Michigan. Historical photographs identify this area as the location used for concrete batch production and material staging during plant construction. The investigation of GPR anomalies in this area resulted in the retrieval of large pieces of concrete and wooden scaffold planking. Additional miscellaneous unearthed debris included nails, rebar, metal bands, and an empty crushed bum barrel. All of this material was excavated from the original construction level elevation. This elevation is presently located approximately 3 to 6 feet below current grade. Based on historical data and the unique properties of soil layers identified in this survey unit, the elevation change is believed to result from the contour grading of lake bottom dredge sediment that was deposited in this area. The sediment fill originated from the initial excavation and construction of the discharge canal.

It was common practice in the construction industry to dispose of unwanted building debris by onsite burial during final site grading. The construction rubble excavated during the GPR survey is typical of the building materials used during plant construction.

In addition to construction debris, the GPR survey identified two separate systems of undefined piping in this survey unit:

1. A piping segment was identified in the eastern portion of the survey unit extending from the Protected Area to the beach. This section of piping is an alternate branch of the storm drain system that was abandoned as a result of reoccurring sand blockage along the lakeshore.

2-80

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-C, Legacy Materials Evaluation

2. The GPR survey also identified a trend of north/south anomalies in the central portion of the survey unit. Follow-up excavations led to the discovery of a run of clay tile set in drain stone. This line is suspected to have been used for water drainage during placement of the lake bottom dredging sediment that had been removed for construction of the discharge canal. Proximity to system piping still in use precluded removal of the drain tile at this time of discovery.

Survey Unit 15(2)

The staging and storage of materials in this area during plan construction is clearly identified in historical photographic records. This location is an undisturbed beach ridge comprised of a covering of cobles over hard clay. No subsurface anomalies were identified; however, a small volume of scrap metal and miscellaneous construction material were found on the beach surface. This material was removed from the area for disposal.

Survey Unit 16 An evaluation of a beach area near the tree line in the southwest section of Survey Unit 16 was conducted. Soils at this location are comprised of shallow gravelly sand typical of the soil layers found in survey unit 12. The soil layer covers a base of cobbles and clay.

It is obvious from the topography and vegetation that this region has been graded.

Vehicle barricades bisect the survey area approximately 75 feet east of the security fence. The GPR survey and follow-up anomaly investigation revealed only naturally occurring rock formations west of the vehicle barricades. An investigation of suspect anomalies east of the barricades is planned prior to Final Status survey.

Sections of tile, asphalt, concrete, and crane cable were visible near the ordinary waterline. These materials were likely placed on the beach as riprap for shoreline protection against wave action and high water levels. All construction debris has been removed from the area for disposal.

Dredge spoils from the Canal were placed in this area on several occasions. The spoils originate from the discharge canal dredging that was conducted to remove sand build-up created by wind and wave action. The shallow gravelly sand, and grading visible in this area are believed to result from the dredging projects.

Survey Unit 17 - Paved Drive The survey area in unit 17 is the paved transport route to the Swamp Warehouse and former 138kV power line easement. This 300-foot section of roadway was developed prior to power operations at the time of original site construction.

Individual soil layers in the survey area were clearly defined by GPR as fill material, native soil, and water table strata. Power cable andror storm drain crossings were identified at 2 locations. The soil below the roadway fill material appears undisturbed.

No significant anomalies were identified in the survey and exploratory excavation was unnecessary. All cable, piping, and road surface materials have been scheduled for removal prior to Final Status Survey.

2-81

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-C, Legacy Materials Evaluation Survey U0nt 17- 138 kVPowerLine Easement During site preparation for original plant construction, an easement supporting 138 kV power distribution was created to supply electrical service to the Emmet County Substation near Petoskey, Michigan. The easement begins near the former plant substation in the Industrial area and traverses the owner-controlled property eastward approximately 400 meters to highway US Highway 31. This area, originally heavily wooded, was logged and smooth graded for power line construction. Area grading resulted in mounded embankments of excess soil spaced against the tree line on either side of the easement. These mounded areas contain large pieces of concrete, asphalt rubble, and other miscellaneous debris as documented by historical information and physical inspection.

A GPR survey could not be conducted in this area due to coarse vegetation and uneven terrain; however, investigation was performed by a thorough excavation of all suspect areas. Using a backhoe and front loader, all mounds were graded to an approximate 5-inch thickness and inspected for the presence of man-made materials. Construction debris and miscellaneous scrap materials were only found on mound surfaces. The mounds all appear to have been created by deposition of soil from the original easement grading. Soil layers beneath the mounds appear to have remained undisturbed. All materials retrieved were removed from the area.

2-82

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-C, Legacy Materials Evaluation Legacy Materials Evaluation Survey Areas

[.v &er l0eLo .Wb ° 105 210 420 I l l l I l Mceanr 2-83 cr- ti

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D, Nal Scanning For Open Land Survey Nal Scanning For Open Land Survey Big Rock Point is required to perform the survey and analysis of all area soils to ensure that potential residual radioactivity levels meet the regulatory requirements for license termination and unrestricted site release. Site history and characterization activities to date have identified Cs-137 and Co-60 as the predominant potential contaminants associated wth Big Rock Point.

Other radioactive contaminants of plant origin, including the HTD (hard-to-detect) radionuclides, are present at levels much lower than those of Cs-137 and Co-60. Soil sampling analyses have demonstrated that measurements of Cs-1 37 and Co-60 can be used as surrogates for estimating levels of other radionuclides with the potential to be present in soils at Big Rock Point.

The evaluation of open land areas for unrestricted release must include a detection methodology of sufficient sensitivity for the identification of small areas of potentially elevated activitywithin a survey unit. This engineering analysis considers the following two survey methods:

I. Surface Scan (continuous monitoring), or

2. Static Measurement (discrete measurement)

This study establishes the detector, counting geometry, and minimum detectable concentration (MDC) values for scanning and defines the methods used to identify small areas of potentially elevated levels of radioactivity in land area surveys. Measurement methodologies follow the guidance provided in NUREG-1507 and NUREG-1575 [References 2 and 3).

ANALYSIS INPUTS:

1. Bicron Nal scintillation probe specifications

2. MicroShield radioactive source modeling [Reference 1]

ANALYSIS:

Surface Scan Surface Scanning measurements for Big Rock Point open land areas are performed by passing a 2" x 20 Nal (Sodium Iodide) gamma scintillation detector across the land surface under investigation. The centerline of the detector is maintained 10 cm above the surface and moved from side to side in a I meterwide pattern at a rate of 0.5 m/sec3 while advancing forward approximately 0.125 m/sec. The resulting serpentine scan pattern crosses each square meter area 4 times in 8 seconds with a maximum separation of less than 50 cm between any path.

The audible signal is monitored for detectable increases in count rate. An observed count rate increase results in further investigation to verify findings and define the level and extent of contamination. This method represents the Stage 1 and Stage 2 scanning process defined in NUREG-1 507 and is the basis for calculations of the scanning detection sensitivity (Scan MDC).

Measurement sensitivity An a priori determination of scanning sensitivity is performed to ensure that the measurement system is able to detect concentrations of radioactivity at levels below the regulatory release limit. Expressed in terms of Scan MDC, this sensitivity Is the lowest concentration of radioactivity for a given background that the measurement system is able to detect at a specifed performance level. The MDC value for Surface Scanning is developed in the following steps:

2-84

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-0, Nal Scanning For Open Land Survey

1. Minimum Detectable Count Rate suiveyor (MDCR,)

The MDCRU is the minimum detectable count note above a given background that the scanning instrument and measurement technique are expected to identify at a specified level of performance. Scanning Is conducted by the following two stages of measurement technique:

• Stage 1 scanning The detector is in motion for initial identification of potential areas of elevated activity.

Based on the scanning progression of I square meter per 8 seconds, an observation Interval of 2 seconds exists for measurement evaluation. The specified performance level for Stage I scanning defines the count rate above a given background that results in a 95% probability of being correctly identified when present and a 60%

probability of being falsely identified when not present (a =0.6, , 0.05).

• Stage 2 Scanning Following Identification of a potential area of elevated activity in the Stage I scanning process; further Investigation Isconducted by increasing the observation interval for measurement of the suspect area to 4 seconds. The specified performance level for Stage 2 scanning defines the count rate above a given background that results In a 95% probability of being correctly identified when present and a 20% probability of being falsely identified when not present (a =0.2, i = 0.05).

The MDCR, is determined for Stage I and Stage 2 scanning based on the following relationship:

MDCR.= d fB'* 60 Where: d'= Index of sensitivity. Stagel d' = 1.38 (a =0.6, P = 0.05)

Stage2 d'= 2.48 (a =0.2, P = 0.05) i = Observation interval: Stage 1 (2 seconds)

Stage 2 (4 seconds)

B; = Background count rate Inthe interval I p = Surveyor efficiency of 0.05 The longer observation interval of Stage 2 scanning increases measurement sensitivity and permits an improvement in the level of specified performance.

Stage 2 scanning provides more conservative (higher) values of MDCR& as detailed in Tables 1 and 2. The Stage 2 scanning MDCRS is the basis value used for development of the Scan MDC.

2-85

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D. Nal Scanning For Open Land Survey

2. Detector Rating The detector rating is the manufacturer rated value of detector cpm response to delivered pR/hr exposure. The detector used in this counting system has a Cs-137 rated value of 1200cpm4lR/hr. To determine the rating value for other nuclides of interest, a calculation of the relative detector response is required. This value is the product of the fluence rate and the probability of interaction for each nuclide. The detector rating for the additional nuclide of interest (cpm/pR/hr) is the product of the manufacturer Cs-1 37 rated value and the relative detector response ratio at each energy. The rating values for additional nuclides of interest are defined by the following:

Fluence Rate F = uRRIhr (EyXjj-1p)d*

Where: Ey = nuclide of interest energy (kev)

/ p = mass energy absorption coefficient for air at Ey Probability of Interaction P = 1 _ eVO)NaW (0 VNai Where: (U/P)Nai = mass attenuation coefficient for Nal at the nuclide energy (x) = thickness of the Nal crystal (cm)

Peal = density of Nal g(cm3)

Relative Detector ResDonse = Fluence Rate

• Probability of Interaction Detector Ratina For Additional Nuclides cpm / AR/hrn eemy= Cs-137I,,d -

RDR re d newr Where: Cs-1 37 ra = 1200cpm/ AR/hr RDR =Relative Detector Response Detector rating values for Big Rock Point nuclides of interest are detailed in Table 2-DI.

Table 2-Di Detector RaUna Ene y key JLP air { P Nal Fluence (F) Probability (P) F P Det. Ratin9 661.6 2.93E-02 7.77E-021 5.16E-02 7.65E-01 3.95E-02 1200 1173.2l 2.70E-02 5.38E-02j 3.15E-02 6.33E-01 2.OOE-02 607 1332.51 2.63E-02 5.01E-021 2.86E-02 6.07E-01 1.73E-02 527 Detector Rating cm/LR/hr I Cs-1 37 Co_ _ __

n 1200 565

^Weiahted sumn based an exrosure rate-.. contribution at anemgias of 1173.2 and 1332.5 kew 2-86

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, SIte Characterization 41112003 Appendix 2-0, Nal Scanning For Open Land Survey

3. Minimum Detector Exposure Rate (MDER)

The MDER is the minimum level of exposure rate delivered to the detector In a given background that the counting system is able to identify at the specified level of performance. This value is a ratio of the MDCRS and the detector rating for the nuclide of interest.

MDCRs MDER =

Detector Rating cpm /1uR Ihr

4. Scan MDC Finally, the Scan MDC is the product of the minimum detectable exposure rate and the modeled exposure/activity.

Scan MDC = MDER *PC'/g ExpmumlAdvitymett

1. ~R/hr Final derivation of the Scan MDC is developed using the Microshield modeling code (ref. 1) to define the exposure/activity model. The source of potential elevated activity for identification by the scanning process Isconsidered to be distributed for an area of approximately 0.25 square meters (0.28 meter radius). A given concentration of the source nuclide of interest is modeled to the measurement system geometry resulting Ina known delivered exposure rate to the detector. Modeled exposure to source concentration values are provided later in this Appendix Results For a distributed source geometry of 0.15 meters depth and 0.28 meters radius Intypical Big Rock Point background levels of 4000 cpm to 6500 cpm, Scan MDC values range from 2.91 to

- 3.71 pCVg for Cs-1 37 and 1.51 to 1.93 pCVg for Co-60. Stage 1 and Stage 2 MDCRj, MDER, and Scan MDC values are detailed for various background activity levels in Tables 2-D2 and 2.03.

2-87

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-D, Nal Scanning For Open Land Survey Table 2-D2 Stage I Scan MDC In Varying Backgrounds

- - TI CPM MDER piR/hr Scan MDC pCi/g

Background

4'4 MDCRsurveyor Cs-137 Co-60 Cs-1 37 Co-60 I I I ..- I..

e-I ~ i i onrrnn

£u u IJ~v

.1 2Q It J l

9. v 11 97

.s vv .__

A7 A nrI _

0 40 0.85 1.62 0.84 25 0 . 38 >~ 2 . - .1 2 .60 4 47 -.

- 0 . - 053  ; >0.42 5i , . 95 - _ _ _ _ _ _ _

3000 1.38 2 13.80 585.48 0.49 1.04 1.98 1.03 3500 1.38 2 14.91 632.40 0.53 1.12 2.14 1.11 4000 1.38 2 15.93 676.06 0.56 1.20 2.29 1.19 4500 1.38 2 16.90 717.07 0.60 1.27 2.43 1.26

- -500Oi -1.38 4 . 2 17.82 - 755.86- 0.63 5500 1.38 2 18.69 792.75 0.66 1.40 2.69 1.40 6000 1.38 2 19.52 828.00 0.69 1.47 2.81 1.46 6500 1.38 2 20.31 861.81 0.72 1.53 2.92 1.52 7000 1 38 2 21.08 894.34 0.75 1.58 3.03 1.57

.750' .8 '2  ;.21.82 - 925.73 0.77 . .

8000 1.38 2 22.54 956.09 0.80 1.69 3.24 1.68 8500 1.38 2 23.23 985.52 0.82 1.74 3.34 1.73 9000 1.38 2 23.90 1,014.09 085 1.79 3.44 1.78 10000 1.38 2 25.20 1,068.94 0.89 1.89 3.62 1.88 10000 . 13  ; 25.20 -1,068.94 0.89 1.89 A 10500 1.38 2 25.82 1,095.34 0.91 1.94 3.71 1.93 11000 1.38 2 26.42 1,121.12 0.93 1.98 3.80 1.97 11500 1.38 2 27.02 1,146.31 0.96 2.03 3.89 2.02 12000 1.38 2 27.60 1,170.97 0.98 2.07 3.97 2.06 12500x 1.38 2 28.17 1,195. 2 1.00 2.12 - 4-.05.

13000 1.38 2 28.73 1,218.78 1.02 2.16 4.13 2.14 13500 1.38 2 29.27 1,242.00 1.04 2.20 4.21 2.19 14000 1.38 2 29.81 1,264.79 1.05 2.24 4.29 2.23 14500 1.38 2 30.34 1,287.18 1.07 2.28 4.36 2.27

-15000 v _ 3'2 30.86 1,309.18 1.09 2.32  : 4.44 zi _______

- - E xou (ijtr )

Modeled @ 5p~ilg . --

_ __ __ _ _ _ _~ s -137 . 1 .23E + 00 - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

_ __ __ _ _ _ _ _ C o- 60 I5 .0 3 E +0 0 ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

2-88

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D, Nal Scanning For Open Land Survey Table 2-13 Stage 2 Scan MDC In Varying Backgrounds Background MDER pR/hr Scan MDC d' S soDCR, Cs-137 rerX Co-60 Cs-137 CO-60 2000 2.48 4 28.64 607.47 0.51 1.08, .06 1.07 3000 2.48 4 35.07 744.00 0.62 1.32 2.52 1.31 3500 2.48 4 37.88 803.61 0.67 1.42 2.72 1.41 4000 2.48 4 40.50 859.10 0.72 1.52 2.51 1.51 4500 2.48 4 42.95 911.21 0.76 1.61 3.09 1.60 5500 2.48 4 47.49 1,007.38 0.84 1.78 3.42 1.77 6000 2.48 4 49.60 1,052.17 0.88 1.86 3.57 1.85 6500 2.48 4 51.63 1,095.14 0.91 1.94 3.71 1.93 7000 2.48 4 53.57 1 136.48 0.95 2.01 3.85 2.00

-I =7R A ~~.eP~M:t "4 -- InY1A 2A -

8000 2.48 4 57.27 1,214.95 1.01 2.15 4.12 2.14 8500 2.48 4 59.04 1,252.34 1.04 2.22 4.25 2.20 9000 2.48 4 60.75 1,288.65 1.07 2.28 4.37 2.27 10000 2.48 4 64.03 1,358.35 1.13 2.40 4.61 2.39 10500 2.48 4 65.61 1,391.90 1.16 2.46 4.72 2.45 11000 2.48 4 67.16 1,424.65 1.19 2.52 4.83 2.51 11500 2.48 4 68.67 1,456.67 1.21 2.58 4.94 2.56 12000 2.48 4 70.14 1,488.00 1.24 2.63 5.04 2.62 1472 '! 2 13000 2.48 4 73.01 1,548.76 1.29 2.74 5.25 2.73 13500 2.48 4 74.40 1,578.26 1.32 2.79 5.35 2.78 14000 2.48 4 75.77 1,607.22 1.34 2.84 5.45 2.83 14500 2.48 4 77.11 1,635.67 1.36 2.89 5.55 2.88 b% Z 2-89

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-D, Nal Scanning For Open Land Survey -

Bicron Detector Specifications t 002 Models: G1 /G1 LEl/G2AG3

, Nal(TI) Scintillation Prpbes r,

le.

"""M 41 el Features G2)t3 Features The GI is a compact, lightweight.

general purpose probe useful for

• 1 x 1. CRYSTAL

• 2" x 2" CRYSTAL (G2) detecting small changes in back.

ground.

• HIGH GAMMA

• 3" x 3' CRYSTAL (03)

SENSmVITY The GILE has a thin crystal and

• RLIGGED entance window (aluninum or CONSTRUpTKIN berylnium) for enhanced detection of Q1LE Features '"1 and ether low energy sources.

• SLNGLE MLIV

• LOW ENERGY GAMMA CONNECTDR The G2 is a nuggedly built probe with a larger scintilalaon crystal than

• DE CTION **H GH GAMIMA the 07 for grater sensltity. in

• MlgEFFICIENCY uB0% SENSmVItY turn. the 03 has a still larger volume for sensitiit greater than the 02.

The G1, GILE. t2 and 63 am GENERAL: Thl probes descrbed When matched nMM the single compatible with portable survey an this da sheet use NaJ(TI *dc channel mndyrs of the ANALYST meters. analyzerss. nd scalers Ilalors to detect mma ad "Xay or LBTECK fiese probes can which accept scintillation probes.

energies. The aneiry range and the discrrnate betven low and high These Include the Bicron ANALYST.

count rate (effclenrcy/sensitiv*y) energy iources r detect low energy SURVEYOR Li. SURVEYOR MS.

desfrd determine which probe to radkiaon while redudcs backgmrund LASTECH end FRiSK-TECH use in a given application. couting raw. -

rrrT~r*1JRAIATiON I.E (I4?4 Pa= p15)34S2U81 0W2m 044l

~'MEASUREME~t aco eml10 ~tt4Qb WesrlurseS. 58*132 Warnwlkldrchegi 13111 D PRDUM I ,hanc 48-219V=07

• Fa= 492064518 I %(krmany 2-90

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D, Nal Scanning For Open Land Survey Bicron Detector Specifications Models: GI/Gi LE/a21f3 ASeciflcations

&1 Probe G1Lt Probe 402 Probe G3 Probe Radiation Gamma. .. Gamma (la Detected awUksV 10-60 lev l '60 keV zo6 keV NallTI Nal(Ti)

Crystal DiOensions I 1' x 0.97 1- a 0O0'4 23x 2V Housing Material Aluminum Alumininm Aluminum Housing 0. 1 3' side wall 0.1w3a sida 0.02w . .

Thickness a.or end WindoW N/A 6.9 mg/cW Al OA NrA Density 23 m/cm' _Be Photomuftfplier 1.12S ds.,

d II 1.l2dia.. 11 2.0'cia.. 10 3.0'dIa, 10 Tubs staoe. selected; stage. splected. stage. seleced. Stage. selected.

biialkal cathode blalkall cathode bialkali cathode blaikall catode Magnetic Shield Conetic fell Conetfcfoll Mu-metal Operating Voltage Vulable Variable Variable Maximum Voltage 1500 V 1500 V 1500 V Voltage Divider Single MIHV Single MHV Single MHV Termination (others available)

TOt *10Bc - megoo 10 meg (oher Impedence . ratings available)

Pulse Heilght S11.5% or better 20% or lt~ter 6.5% or better Resolutlon for 12Cs (663 keV) for "AI (*S kaV) for "'Cs (663 keV)

Relative Soo kcpmfrmRdh 375 kcpvmRflh 1200 lccpm/mrih Sensitivity for "'C7a for n4 for 171CS Efficiency 46% for '"'C 99% for l"as 74% for "'Cs

-410 to .8000 -400 to r,5OC- *400 lo +gSO ________

1O0C per hour 10CC per hour 1000 per hour 7' x 1.37' 7.10 xt i.r G.S7 x Z3- 9-a7 x S.25' (max) 20 x 3.S cm I ax 3.5jcmn 21z x 5.8 cm 25.1 X e.3 cm Wetgt 9.8 02 7.5 oz 1.701b 4.lb 278 C I a13 c 0.Sikg 1.81 kg

' Etflenct La defined matm ceniaa e1a vin cil sid beam $idait.51 atam elat ce 01meO dUnexo~rwhlC1 Isg,~se by in

• slmcor.

APPUCATION NOTES: The G2LE Is a 2 %liameter version B1lcrons CapabItlesi In Nal(TI) and 01.5 and C2LE model probes are of the 01 LE. and. Ike the G1 LE. Is organic aCntillators enable us to also avallabla. Tile 1.5 uses a optiuli'ed (or "'4I Adtctlon. The ofler a wide variety of scintllat Ion 18 diameter by 1 thick crystal to optional beryllium wndow for the probes. Versatile detection ayi Items provide a larger sensitive area and 61 LE and G2LE p avldes greater result from combining these pr obes more efficiency than twh G1. low energy efficlerfy. with Bkren-s ANALYST. LAST 'ECH.

ruems h l

• FRISK-TECH, Cr SURVEYOR 1M &

o serper1ue! r5nU Ma~~~nterW& Iu m anenn.

L CD PjfPrsdvnmcww*dP#jw mden mp.'

. 96910C saw gag¶oov 12/93 2-91

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 20, Nal Scanning For Open Land Survey MicroShield Model Cs-137 MicroShield v5.03 (5.03-00060)

Consumers Energy Page 1 File Ref:

DOS File: CS137028 .MSS Date:

Run Date: October 15, 2002 By:

Run Times 11:45:47 AM Checkeds Duration: 00:00:00 Case

Title:

Scan MDC

Description:

Cs-137 uniform concentration, 28 cm radius Geometry: 8 - Cylinder Volume - End Shields Y Source Dimensions Height 15.0 cm 5. 9 in Radius 28.0 cm 11.0 in Dose Points X I &

1. 1 OcC n 25 cm 0 cm 0.0 i,a 9. 8 in 0.0 in Shields RhiplABsKmn p imenuion MxtarlADennI+/-

Source 3.69e+04 cm" Concretel .6 Air Gap Air 0.00122 Source Input Grouping Method i Actual Photon Energies NutlidA miitne1. VCm+/- lems Ba-137m 2.7960e-007 1.0345e+004 7.5680e-006 2.8002e-001 Cs-137 2.9556e-007 1.0936e+004 8.0000e-006 2.9600e-001 Buildup The material reference is S Source Integration Parameters Radial 20 Circumferential 10 Y Direction (axial: t Results Enpr= Ac-ijiL- F1nlnp RArtA Expwalu"e 1at E=p=irta Rat-P%

MeY pbhoton/seI MPVIrmazelp/ mWg /hr jnR jhr gm ,1iflaw with A11ldup 0 .031 2.142e+02 3.852e-05 4.667e-05 3.209e-07 3.888e-07 0 #4)22 3 .9S2e+02 7.408e-OS 9.030e-05 5.962e-07 7.267e-07 OA.i64 1.438e+02 4.10le-05 5.35Qe-05 2.33Ne-07 3.040e-07 0.6426 9.301e+03 3.553e-01 6.330e-01 6.98 e-04 1.227e-03 TOTALS. 1.006e+04 3.555e-01 6.332e-0l 6.900e-04 1.229e-03 2-92

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D, Nal Scanning For Open Land Survey MlcroShield Model Scan Co-60 MicroShield v5.03 (5.03-00060)

Consumers Energy 1 File Ref:

File: C060028.MS5 Date:

. Date: October 15, 2002 By:

. Time: 12:10:15 PM Checked:

• ation: 00:00:00 Case Titles Scan MDC Descriptions CO-60 uniform concentration, 28 cm radius Geometrys 8 - Cylinder Volume - End Shields Source Dimensions Height 15.0 cm 5.9 in Radius 28.0 cm 11.0 in Dose Points x X z

1. 1 0 cm 25 cm 0 cm 0.0 in 9.8 In 0.0 in Shields Ahl4 1 NAM imenrai nw1 m 4en MAterial._44 Dnt Source 3.69e+04 cm' Concretel. 6 Air Gap Air 0.0012:

Source Input Grouping Method s Actual Photon Energies wleu1 4idA eu ePt4 elP We4 l1e m

/ez-c Co-60 2.9556e-007 1.0936e+004 8.00OOe-006 2.9600e-001 Buildup The material reference ia t Source Integration Parameters Radial 20 Circumferential 10 Y Direction (axial 10 Results Ie gy Aat 1vIt F1 tlnrutoe Rst,- rplig-rne- RD.Lr- F -

• 1~n R ft 9- Erumpn ee -^ R at t^

Mev bphntnrq Ing- MpV/em32 /IRa= M^V/rm 2 I5^F' : mR/hkr mR/hr Wi th R,12 1 da- With Allu

.6938 1.784e+00 7.244e-05 1.272e-04 1.399e-07 2.456e-07

.1732 1.094e+04 8.782e-01 1. 335e+00 1.569e-03 2.386e-03

.3325 1.094e+04 1. 035e+90 1. 523e+00 1.795e-03 2.643e-03 TALS : 2.187e+04 1. 913e+00 2. 858e+00 3.364e-03 5.029e-03 2-93

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-D, Nal Scanning For Open Land Survey References

1. MicroShield v5.03 Grove Engineering 15215 Shady Grove Road Rockville, Maryland 20850

2. NUREG-1507, Minimum Detectable Concentrations With Typical Radiation Survey Instruments for Various Contaminants and Field Conditions U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001 Office of Nuclear Regulatory Research

3. NUREG-1575, Multi-Agency Radiation Survey And Site Investigation Manual U. S. Nuclear Regulatory Commission Washington, DC 20555-0001

4. Harshaw Bicron Radiation Measurement Products 6081 Cochran Road Solon, OH 44139 2-94

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Characterization Summary Radiological surveys conducted in support of site characterization are designed by directives established through the Data Quality Objective (DQO) process and follow the guidance provided in NUREG-1 575. Survey design information contained in this Appendix follows the ayplicable guidance provided in NUREG-1575. The Big Rock Point Impacted Area is 0.540 km (133.3 acres) in size and currently consists of 27 survey units. The characterization survey process has identified less than 1% of this area to contain residual radioactivity of plant origin. Four survey units (Discharge Canal, 5(1), 5(2), and 8) qualify as complex locations containing one or more of the following:

• Identified contaminant levels requiring remediation,

• Previous soil remediation and backfill within the survey unit,

• Subsurface contamination,

• Subsurface components currently supporting containment ventilation or continued operation of the fuel pool, or

• Geomorphologic conditions requiring complex sampling techniques (Discharge Canal).

Measurement instrumentation and methods used for the performance of characterization surveys are detailed in Sections 2.3.4.and 2.4.4.1. This appendix defines the radiological status of Impacted area soils and provides the characterization survey findings of individual survey units to include:

• Physical description and brief history of the survey unit,

• Current radiological status,

• Data summary,

• The primary survey design and summary of all supporting surveys,

• Maps defining the survey unit and identifying sample point locations, and

• Survey results.

2-95

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 1 Description Survey Unit I is an area of approximately 1,600 m2 that occupies the southwest comer of the Protected Area. The Butler Building, Contaminated Warehouse, Calibration Shack, and the QAIQC Warehouse are located in this area. Subsurface structures and equipment in Survey Unit I include building foundations, plumbing connections, fiber optics, and electrical conduit.

History The HSA identifies this survey as potentially containing residual radioactivity . This location is adjacent to the transport route that was used to move spent resin and filter material from the Protected Area to the Radwaste Compound. Buildings located in this area have been used for the storage of contaminated materials. The Butler Building and the QA/QC Warehouse have undergone remediation following the discovery of fixed structural contamination.

Radiological Status Radioactivity of potential plant origin was not identified in Survey Unit I above Initial Derived Concentration Guideline Levels (IDCGLs). Subsurface soil contamination is not Indicated by the HSA or process knowledge and was not identified in soil analyses. The radiological status of this survey unit is Class 1 based on proximity to the following area locations:

• Contaminated materials transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Mean value (pCi/g) 0.038 Standard Deviation (a) 0.076 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR = 5.11-2.5 =34 a 0.076 With a and , error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Survey unit dimensions 40 x 50 meters 2-96

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Random Numbers 0.82, 0.31 X = (0.82)(40 m) = 32.8m Y = (0.31)(50 m) = 15.5 m Sample Spacing L = Ae/N = l160% = 10.7 m spacing As a conservative measure 20 samples were collected using 10 meter spacing. For data points falling outside the survey unit or where obstructions prohibited sample collection, alternate sample locations were identified by the random selection process.

Supporting Surveys One deep-core profile was obtained in survey grid 363 as shown on the following page.

Sampling was performed to a depth of 2.4 m by a mechanically driven 3-inch diameter split-spoon hollow stem auger. The sample data point was judgmentally selected based on location availability due to subsurface piping, fiber optics, and electrical power supply.

Data Summary Survey Unit I Activity detected in one sample only 2-97

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2,Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 1 Scle: s, b ot26 o

Legend Stwey Url 1 NLnrberd LOCal Coordirate Grd i BU dings . Soil Sample Locators Big Rock Point Impacted Area North

, I' Lagond

-M u.A, Legend rLh.g.

LLZ2 0-s-u-I kfd.Ai~

- SJFWYU-I 2-98 6-o2

Revision 0 BRP LICENSE TERMINATION PLAN 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-137 Co-60 1 Am-241 Survey Grid Coordinate Depth ) (PC l (pCCg pU) D-Su y (x,y) (m)ity

• Activiy* MDA Activity' MDA 324 (3.0,5.8) 0.00-0.15 0.07 nd 0.04 nd 0.18 iA 324 (8.0,3.0) 0.00-0.15 nd 0.04 nd 0.02 nd 0.19 1A 325 (1.8.6.0) 0.00-0.15 0.05 nd 0.04 nd 0.18 1A (8.5,3.0) 0.00-0.15 0.07 nd 0.04 nd 0.18 1A 325 (7.5,3.5) 0.00-0.15 0.33 0.11 nd 0.28 1A 326 327 (2.8,5.5) 0.00-0.15 0.26 nd 0.03 nd 0.17 1A (8.0.3.0) 0.00-0.15 0.06 nd 0.04 nd 0.19 1A 327 336 (8.0,3.0) 0.00-0.15 nd 0.04 nd 0.04 nd 0.17 1A 337 (8.5.3.0) 0.00-0.15 0.07 =nd 0.05 nd 0.16 1A 338 (2.8,5.5) 0.00-0.15 0.28 nd 0.04 nd 0.19 1A (8.0Q3.0) 0.00-0.15 0.37 nd 0.08 nd 0.30 1A 339 339 (9.0.9.0) 0.00-0.15 nd 0.04 nd 0.04 nd 0.16 1A (8.0,3.0) 0.00-0.15 nd 0.04 nd 0.04 nd 0.21 1A 348 349 (8.0.3.0) 0.00-0.15 nd 0.26 nd 0.05 nd 0.19 IA 350 (2.8,5.5) 0.00-0.15 0.36 nd 0.04 nd 0.18 1A 350 (8.0,3.0) 0.00-0.15 nd 0.04 nd 0.04 nd 0.23 1A (2.8,5.5) 0.00-0.15 0.03 nd 0.04 nd 0.17 1A 351 (8.0.3.0) 0.00-0.15 nd 0.03 nd 0.03 nd 0.15 1A 351 361 (2.4,5.5) 0.00-0.15 0.05 nd 0.03 nd 0.17 1A 361 (8.0,3.0) 0.00-0.15 0.08 nd 0.04 nd 0.18 1A 362 (2.8.6.0) 0.00-0.15 0.09 nd 0.03 nd 0.17 1A (2.8,5.5) 0.00-0.15 0.18 nd 0.10 nd 0.32 1A 363 363 (8.0,3.0) 0.00-0.15 0.18 nd 0.10 nd 0.33 1A (1.3,6.5) 0.00-0.90 0.03 nd 0.07 nd 021 1Ad=i 363 36 (1.3,6.5) 0.90-120 nd 0.08 nd 0.09 nd 0.35 IAdmpcom 163 (1.3,6.5) 1.20-180 nd 0.05 nd 0.11 nd 0.41 1Adeqmi (1.3,6.5) 1.80-240 nd 0.03 nd 0.05 nd 0.25 1Ad~w.9j 363 ndidicates non detect, MDA reported b No entry in MDA columns is provided when residual radioactivity is detected.

2-99

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 2 Description Survey Unit 2 is approximately 2000 m2 and occupies the west-central section of the Protected Area. This area contains the Maintenance/Construction Complex (MCC). Subsurface structures and equipment in Survey Unit 2 include the MCC building foundation, plumbing connections, fiber optics, electrical conduit runs, and a section of the site Fire Protection System piping.

History The HSA identifies this survey unit to potentially contain radioactive contamination in area soils.

Survey Unit 2 is adjacent to the transport route used to move spent resin and filter material from the Protected Area to the Radwaste Compound. The MCC has not been used for the storage of contaminated materials and equipment.

Radiological Status Residual radioactivity was not identified in Survey Unit 2 above established background concentrations. Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified in deep-core sample analyses. The radiological status of this survey unit is Class I based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primarv Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCi/g) 0.014 Standard deviation (a) 0.025 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR 5.11-2.5 =

a 0.025 With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2-100

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Survey unit dimensions 40 x 50 meters Random Numbers 0.60,0.13 X = (0.60)(40 m) =24 m Y = (0.13)(50 m) = 6.5 m Sample Spacing L = = =11. meters As a conservative measure 20 samples were collected using 10 meter spacing. For data points falling outside the survey unit or where obstructions prohibited sample collection, alternate sample locations were identified by the random selection process described above.

Surportina Surveys A deep-core profile survey was conducted in survey grids 224 and 3129. Sampling was performed to a maximum depth of 2.4 meters by split-spoon, hollow-stem auger. Sample point locations were judgmentally selected based on historical data, process knowledge and the potential to contain subsurface radioactivity of plant origin. Sample point locations for deep-core profiles are limited in this survey unit due to the safety concerns associated underground systems and power supplies that remain in service.

Data Summary Survey Unit 2

• nd indicates non detect 2-101

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 2 205 205 207 20 2 =

43 228 242 247 261 296 499 304

)11 316

)27 32I sc : 5 1 26 Metem Big Rock Pdnt Impacted Arm North

- -1 Lag nd Legnd II Vi; I

' Ura I Cter Survey UNi1

- Suvey Uit 2 C-os3 2-102

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-137 Co-60 Am-241 Surey Grid (x,y) (m) (m) (pC (pCVg) (PC )

_ . Activity l J MDAG Activity* MDA 2A 224 (2.4.0.0) 0.00-0.15 0.92 nd 0.08 nd 0.27 2A 224 (4.0,6.5) 0.00-0.15 0.18 nd 0.13 nd 0.26 2A 225 (2.4,0.9) 0.00-0.15 0.14 nd 0.08 nd 0.28 2A 225 (4.0,6.5) 0.00-0.15 nd 0.13 nd 0.13 nd 0.23 2A 226 (2.4.0.9) 0.00-0.15 0.10 nd 0.11 nd 0.16 2A 243 (2.4,0.9) 0.00-0.15 0.33 nd 0.13 nd 0.22 2A 243 (4.0,6.5) 0.00-0.15 0.08 nd 0.10 nd 0.17 2A 262 (2.4,0.9) 0.00-0.15 nd 0.03 nd 0.03 nd 0.17 2A 262) (4.0,6.5) 0.00-0.15 029 nd 0.09 nd 0.33 2A 300 (2.4,0.9) 0.00-0.15 nd 0.03 nd 0.03 nd 0.15 2A 300 (4.0,6.5) 0.00-0.15 0.06 nd 0.04 nd 0.18 2A 301 (2.4,0.9) 0.00-0.15 0.39 nd 0.11 nd 0.21 2A 303 (4.0,6.5) 0.00-0.15 0.04 nd 0.11 nd 0.27 2A 303 (8.0,3.0) 0.00-0.15 0.15 nd 0.10 nd 024 2A 312 (2.4.0.9) 0.00-0.15 0.03 nd 0.04 nd 0.20 2A 312 (4.0,6.5) 0.00-0.15 0.03 nd 0.04 nd 0.19 2A 313 (2.4,0.9) 0.00-0.15 0.15 nd 0.05 nd 0.20 2A 313 (4.0,6.5) 0.00-0.15 0.83 nd 0.06 nd 0.26 2A 315 (4.0,6.5) 0.00-0.15 0.19 nd 0.04 nd 0.18 2A 315 (4.0,6.5) 0.00-0.15 nd nd 0.06 nd 0.24 2Aotp m 224 (QA,7.8) 0.00-0.15 nd .08 nd 0.08 nd 0.27 2Adeep o 224 (9.4,7.8) 0.60-1.20 nd 0.08 nd 0.07 nd 0.38 2Adep NM 224 (9A,7.8) 1.20-1.80 nd 0.04 nd 0.04 nd 0.18 2AdeCp , 224 (9.4,7.8) 1.80-2.40 nd 0.07 nd 0.08 nd 0.37 Mdwwmi 224 (9.4,7.8) 2A0-3.00 nd 0.05 r nd 0.07 nd 0.35 2Ad.. .1 224 (9A,7.8) 3.00-3.60 nd 0.07 nd 0.09 nd 0.38 2Adowe1 312 (2.4.0.9) 0.00-0.15 nd 0.09 nd 0.10 nd 0.28 2AMdspi 312 (2.4,0.9) 0.60-1.20 nd 0.06 nd 0.13 nd 0.34 2Adeepol 312 (2.4,0.9) 1.20-1.80 nd 0.03 nd 0.04 nd 0.15 2AdWWM 312 (2.4,0.9) 1.80-2.40 nd 0.08 nd 0.11 nd 0.38 2Adw =*i 312 (2.4,0.9) 240-300 nd 0.04 nd 0.05 nd 0.27 and indicates non detect, MDA reported b No entry in MDA columns is provided when residual radioactivity is detected.

2-103

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 3 Description Survey Unit 3 is approximately 2000 m2 and occupies the northwestern section of the Protected Area. Subsurface structures and equipment located in this area include electrical conduit, storm drains, Fire Protection System piping and Post Incident System piping.

History The HSA identifies this survey unit to potentially contain radioactive contamination in area soils.

Survey Unit 3 is adjacent to the transport route used to move spent resin and filter material from the Protected Area to the Radwaste Compound. A trash incineration site for the burning of radiologically clean refuse was formerly located in this area. Radioactivity identified in incinerator ash has been documented by the HSA.

The Alternate Shutdown Building was dismantled and removed from this area in 2001 to prepare for construction of the transport pathway that will be used to move spent fuel to the ISFSI storage pad. Characterization surveys supporting this construction effort (3A2 and 3A3) were conducted prior to road surfacing and have been included in the Survey Results table.

Radiological Status Residual radioactivity was not identified in Survey Unit 3 above the IDCGL values. Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified above trace values in deep-core sampling analyses. The radiological status of this survey unit is Class 1 based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Co-60 Mean value (pCVg) 0.086 0.013 Standard deviation (a) 0.177 0.038 Applying the Unity Rule, aI I °Cs 2 ,-2

+ cYCo = 0.1 7 7Cs 22

+(0.0379coA DCGLCs DCGLco 5.1 lc 4.99X 0.036 2-104

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Using the Unity Rule, the DCGL weighted sum is 1.0. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR 1-0.5 = 13.8 a 0.036 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Survey unit dimensions 40 x 50 meters Random Numbers 0.69, 0.47 X = (0.69)(40 m) = 27.6 m Y = (0.47)(50 m) = 23.5 m Sample Spacing L = 4 = F0014 = 11.9 meters As a conservative measure 17 samples were collected using 10 meter spacing.

Sampling was prohibited in grids 206 and 207 due to subsurface obstruction.

Supowrting Surveys Supporting surveys include those conducted in support of ASD Building removal (3Adeepc= 3, 3Adeepcor. 2)),and ISFSI road construction (3A2 , 3Adeepcoe ). Deep core sampling was performed to a maximum depth of 6.6 meters. Sample point locations were judgmentally selected based on historical data, process knowledge and the potential to contain subsurface radioactivity of plant origin. Sample point locations for deep-core profiles are limited in this survey unit due to the safety concerns associated underground systems and power supplies that remain in service.

Data Summary Survey Unit 3 SurveySuvySamples No. of Radionuclides Ralncie' Mean (pCi/g) Max. Value (PCilg) 3A 7CS 137 0.34 2.13 3A1 17 C6 0.28 0.28 3A2 2 nd 3Adeepccel 9 Cs-137 0.17 3Adeepc=2 3 nd _

3AdeepWe3 9 Cs-137 0.06 nd indicates non detect

• • Activity identified in one sample only 2-105

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 3 1+

ScaL 6 ' .b b mrs Legend M &vsy UrS 3 Nuxered Local Coorciate Gndd r EMdinge

• Soil Sarne Locators Big Rock Point Impacted Am" North "I,1 I

j I I I --

W - , - L J __

M _~.

_, ^_ 3 C -(tf 2-106

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth l Cs-137 Co-60 l Aii-241 Survey Grild (XY) (M) ACI Activityr(PC)(n) a D

• IWDA' ciiy[ (

Activiy )DA" M Activit(Pl~Y 1 MDA" 3A1 129 (7.6,3.5) 0.00-0.15 rid 0.15 nd 0.04 nd 0.26 3A, 130 (7.6,3.5) 0.00-0.15 0.21 nd 0.09 nd 0.31 3A, 131 (7.6,3.5) 0.00-0.15 0.32 nd 0.12 nd 0.22 3A, 132 (7.6,3.5) 0.00-0.15 0.30 nd 0.06 nd 0.31 3A1 148 (7.6,3.5) 0.00-0.15 0.08 nd 0.08 nd 0.27 3A1 149 (7.6,3.5) 0.00-0.15 0.18 nd 0.07 nd 0.31 3A1 150 (7.6,3.5) 0.00-0.15 nd 0.08 nd 0.09 nd 0.15 3A1 151 (7.6,3.5) 0.00-0.15 0.07 nd 0.06 nd 0.30 3A1 167 (7.6,3.5) 0.00-0.15 0.11 nd 0.08 nd 0.31 3A, 168 (7.6,3.5) 0.00-0.15 rid 0.09 nd 0.12 nd 0.24 (7.6,3.5) 0.00-0.15 0.16 nd 0.08 nd 0.32 3A, 170 3A1 186 (.6,3.5) 0.00-0.15 nd 0.14 nd 0.13 nd 0.25 187 (7.6,3.5) 0.00-0.15 0.08 nd 0.07 nd 0.28 3A, 3A, 188 (7.6,3.5) 0.00-0.15 nd 0.07 nd 0.11 nd 0.19 3Ai 189 (7.6,3.5) 0.00-0.15 0.31 nd 0.13 nd 0.18 3Ai 205 (7.6,3.5) 0.00-0.15 0.11 nd 0.06 nd 0.16 3A, 208 (7-6,3.5) 00-0.15 2.13 0.28 nd 0.41 189 (9.9,0.1) 0.00-0.15 nd 0.04 nd 0.05 nd 026 3A2 170 (0.1) 0.00-0.15 nd 0.05 rnd 0.05 nd 0.21 3Aec 170 (0.5,9.0) 0.00-020 006 - nd 0.05 nd 0.22 170 (0.5,9.0) 0.30-0.75 0.06 nd 0.05 l nd 0.25 3Ad1 3Ad1

< 170 (0.5,9.0) 1.05-1.50 nd 0.04 nd 0.06 I nd 0.25 3Awce 170 (0.5,9.0) 1.802.25 nd 0.05 nd 0.06 rnd 0.26 3Ae1 170 (0.5,9.0) 2.55-2.70 0.17 nd 0.04 rnd 021 3Ae1 170 (0.5,9.0) 2.55-2.70 0.12 _ _ nd 0.05 nd 0.21 1 3te 170 (0.5,9.0) 3.3-4.5 nd 0.04 nd 0.02 rnd 0.15 1 de 170 (0.5,9.0) 4.5-5.1 nd 0.04 nd 0.04 rnd 0.17 170 (0.5,9.0) 5.4-6.6 nd 0.03 nd 0.04 nd 0.17 28MAd1 189 (9.0,0.1) 0.15-301 nd 0.04 nd 0.05 rnd 0.24 3Ad2 1

13A .2 1 189 l0.9,0.1) 1 0.30-0.45 nd 0.04 l nd 0.06 nd 0.28 3Adw l 189 4 (0 0.1j 0.45-0.60 l nd 905 _d 0.07 rid 0.32 0.00-0.60 rd 0.05 rd 0.05 nd 0.20 169/170 0.00-0.60 I nd 0.05 rnd 0.05 rnd 0.21 3Adepe3 169/170 1 169/170 0.00-0.60 rnd 0.05 rnd 0.05 rnd 0.25 13Ad3 3Adeep9s3 169/170 0.00-0.60 I nd 0.06 rnd 0.04 nd 0.23 3Ads l 1691170 0.00-0.60 rnd 0.05 rnd 0.05 I nd 021 0.00-0.60 0.03 rnd 0.05 rnd 0.23 13 d3 l 169/170 1 d3Ao3 170 l(1.61.6) 0.60-0.75 l nd 0.06 rnd 0.06 rnd 0.28 Mdeemm3 169 ( 8.0,1.6) 0.60-0.75 0.06 d 0.05 rnd 0.29 (5.0,1.6) 0.60-0.75 rnd 0.05 rnd 0.06 rnd 0.22 3Ad l 169 (5.0,4.8) 0.60-0.75 rnd 0.04 rnd 0.04 rnd 0.23 1 d3 169

`169 l(8.04.8) 0.60-0.75 rnd 0.03 rnd 0.05 rnd 0.18 M

3Ads I3 170 (1.6,4.8) 0.60-0.75 0.06 rid n 0.05 rnd 0.25 3Ads 170 1 0.60-0.75 nd 0. rd 0.05 nd 0.22 1 169

-3Adw (8.0,8.0)

• 0.60-0.75 rnd 0.04 rnd 0.04 I nd 0.26 169 (5.0,8.0) 0.60-0.75 rnd 0.05 rnd 0.06 nd 1 0.25 3Ade and indicated non detect, MDA reported No entry hi MDA columns is provided when residual radioactivity Isdetected

" Survey Unit 3, portion of road construction survey dExcavation Soil Fig For ASD Building Removal e Base Elevation Survey During ASD Building Removal 2-107

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 4 Description Survey Unit 4 is approximately 1600 m2 in size and occupies the north-central section of the Protected Area. Subsurface structures located in this area include electrical conduit, Fire Protection System piping, Post Incident System piping, and footings and foundations of the Equipment Lock and Containment Building.

History The HSA identifies this survey unit to residual radioactivity in area soils. The Equipment Lock is the point of transfer for radiologically contaminated equipment and materials from the Containment Sphere. Survey Unit 4 is also adjacent to the transport route used for movement of spent resin and filter material from the Protected Area to the Radwaste Compound.

Radiological Status Radioactivity of potential plant origin was not identified in Survey Unit 4 above the IDCGL value.

Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified above trace values in deep-core sampling analyses. The radiological status of this survey unit is Class I based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Co-60 Mean value (pCig) 0.720 0.043 Standard deviation (c) 0.127 0.003 Applying the Unity Rule, CIS 2 2( 0.127)s 2 2 DCGLCs ) -DCGLCo 5., 4.9co a=0.025 For the Unity Rule the DCGL for the weighted sum is 1.0. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL - LBGR =1-0.5 = 20

a. 0.025 2-108

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 40 X 50 meters Random Numbers 0.59, 0.99 X = (0.59)(40 m) = 23.6 m Y = (0.99)(50 m) = 49.5 m Sample Spacing L = JAZZ N = = 10.7 meters As a conservative measure 22 samples were collected using 8.7 meter spacing.

Suooortinq Surveys Supporting surveys were conducted during soil preparation for construction of the loading dock annex to the Equipment Lock (4A3, 4A4). Additional surveys were also performed (4A 2 ) prior to construction of the ISFSI road using systematic sampling. Sample point locations for deep-core profiles are limited in this survey unit due to the safety concerns associated with underground systems and power supplies that remain in service.

Data Summary Survey Unit 4 Survey No. of Samples Radionuclides* Mean Max. Value

_ __ ___ _ _ _ ___ __ __ _ _ _ _ _ _ _ _ _ _ _(Pc ilg) p i9 4A, 22 Cs-137 0.22 0.74 4A217 Cs137 0.05 0.07 Cow 0.27 0.27 4A3 10 Cs 137 0.57 1.22 Cow 0.06 0.07 4A4 4 Cs-137 0.17 0.17 4A Aim 1 22 Cs-137 0.08 0.08 4Ad,,cm2 12 Cs-137 0.10 0.10 Activity identified in one sample only 2-109

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 4 56 57 58 59 60 61 151 170 1891014

_~~~~~~t I lIl_.......'_.

208 3 212 , 213 22 2 I 23II.-

,727 1 22o o7 t 231 232 I 6I

• Metes SCI I:

Big Rock Point Impacted Aro North

, a i'S 1, r Legend

\tt, I I [~

. I .I I

7 Urnimprcted Areas

dmace kegs / LI] Other Swuy Uni C:2 USKWWWArea i&ORuvyUfltA4 6 -0S 2-110

Revision 0 BRP LICENSE TERMINATION PLAN 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-137 Co-60 Am-241 Grid Coorinat Dept (PC ) (pCs ( 11U)

Survey 1Activity MDAO Activitya MDA0 (urye Gricdtivixty

• l MDA 133 (6.2,9.5) 0.00-0.15 0.15 nd 0.09 nd 0.40 4A1 134 (4.9,9.5) 0.00-0.15 0.28 nd 0.05 nd 0.21 4A1 135 (3.6.9.5) 0.00-0.15 0.18 nd 0.06 nd 0.22 4Ai 136 (2.3.9.5) 0.00-0.15 0.20 nd 0.09 nd 0.37 4Ai 133 (6.2,0.8) 0.00-0.15 027 nd 0.04 nd 0.22 4A1 134 (4.9,0.8) 0.00-0.15 0.34 rnd 0.12 nd 0.33 4A1 135 (3.6,0.8) 0.00-0.15 nd 0.11 nd 0.07 nd 0.40 4A1 (2.3,0.8) 0.00-0.15 nd 0.05 nd 0.04 nd 0.19 4A1 136 152 (6.2,2.1) 0.00-0.15 nd 0.07 nd 0.10 nd 0.42 4Ai 153 (4.9,2.1) 0.00-0.15 0.20 nd 0.04 nd 0.18 4Ai 154 (3.6,2.1) 0.00-0.15 0.74 nd 0.13 nd 0.38 4Ai 155 (2.3,2.1) 0.00-0.15 0.20 nd 0.10 nd 0.44 4Ai 171 (6.2,3.4) 0.00-0.15 nd 0.04 nd 0.05 nd 0.21 4Ai 172 (4.9,3.4) 0.0O-0.15 0.08 nd 0.08 nd 0.33 4Ai 173 (3.6,3.4) 0.00-0.15 0.13 nd 0.09 rid 0.35 4A1 174 (2.3,3A) 0.00-0.15 0.10 nd 0.12 nd 0.31 4A1 190 (6.2,4.7) 0.00-0.15 nd 0.06 nd 0.07 nd 0.38 4Ai 191 (4.9,4.7) 0.00-0.15 0.03 nd 0.09 nd 0.20 4Ai 209 (6.2,6.0) 0.00-0.15 nd 0.04 nd 0.05 nd 0.21 4A, 210 (3.9,2.4) 0.00-0.15 nd 0.05 nd 0.04 nd 0.23 4Ai (7.4,2.8) 0.00-0.15 nd 0.07 nd 0.09 nd 0.32 4Aa 210 155 (6.2,9.0) 0.00-0.15 nd 0.05 nd 0.03 nd 0.20 4A1 209 (2.9.2.9) 0.00-0.15 nd 0.05 nd 0.07 nd 0.29 4A2 209 (4.2,9.3) 0.0O-0.15 rnd 0.05 nd 0.07 nd 0.30 4A2 190 (2.9,2.9) 0.00-0.15 rnd 0.05 nd 0.07 nd 0.26 4A2 190 (4.2,9.3) 0.00-0.15 rnd 0.04 nd 0.05 nd 0.26 4A2 4A2 171 (2.9,5.0) 0.00-0.15 l nd 0.04 rnd 0.06 rd 0.29 171 (6.9,6.5) 0.00-0.15 rnd 0.04 rnd 0.06 nd 029 4A2 152 (5.4.0.0) 0.00-0.15 l nd 0.05 l nd 0.06 nd 029 4A2 152 (9.9,8.2) 0.00-0.15 rnd 0.05 l nd 0.06 nd 0.29 4A2 190 (6.2,6.6) 0.00-0.15 0.04 l nd 0.06 rd 0.26 4A2 190 (8.6,6.6) 0.00-0.15 rnd 0.05 rnd 0.06 id 0.31 4A2 190 (6.8.4.7) 0.00-0.15 rnd 0.04 nd 0.06 rd 026 4A2 0.00-0.15 0.07 7 27 nd 0.33 4A 2 190 (6.2,0.7) 190 (8.6,0.7) 0.00-0.15 l nd 0.05 rnd 0.05 nd 0.28 4A2 209 (6.8,8.8) 0.00-0.15 rnd 0.05 nd 0.06 ndd 0.2 4A2 4A2 209 (6.2,4.8) 0.00-0.15 rnd 0.05 rnd 0.06 4A2 209 (8.6,4.8) 0.00-0.15 nd 0.05 rnd 0.06 id l0.27 4A2 209 (6.8,2.9) 0.000.15 0.04 rid 0.05 rd 0.27 nd indicates non detect, MDA reported bNo entry in MDA columns Is provided when residual radioactivity Is detected 2-111

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Coriae DphCs-1137' Co-SO Arn-2411 Survey Grid )(x y) Av (p DA b ci DAb I (xy) i) Activity a MD b Activity8 D Activit MDb 4A3 210 (9.0,9.0) 0.00-0.15 1.22 0.15 nd 0.29 4A3 210 (9.0.6.0) 0.00-0.15 0.63 0.63 nd 0.34 4A3 211 (0.5,9.0) 0.00-0.15 0.71 0.05 nd 0.26 4A3 192 (1.5,3.0) 0.00-0.15 nd 0.04 nd 0.05 nd 0.26 4A3 211 (1.0,6.0) 0.00-0.15 0.16 0.19 nd 0.21 4A3 210 (9.0.9-0) 0.15-0.30 0.11 nd 0.07 nd 0.22 4A 4 209 (9.5,6.5) 0.80-0.95 nd 0.05 nd 0.06 nd 0.25 4A4 209 (8.9,9.5) 0.80-0.95 0.17 nd 0.05 nd 0.26 4A4 190 (9.5,2.0) 0.80-0.95 nd 0.05 nd 0.05 nd 0.25 4A4 190 (8.9.3.5) 0.80-0.95 nd 0.05 nd 0.04 nd 0.24 4Adeow=*i 209 (7.1,7.2) 0.60-1.20 nd 0.07 nd 0.07 nd 0A1 4Ade.or.1 173 (5.7,6.7) 0.60-1.20 nd 0.05 nd 0.05 nd 0.17 4Adeepc~i 135 (0.6,7.1) 0.00-0.60 0.08 nd 0.04 nd 0.22 4Adee__ wo 173 (5.7,6.7) 0.00-0.60 nd 0.10 nd 0.09 nd 0.40 4Adeepo1 209 (7.1,7.2) 0.00-0.60 nd 0.05 nd 0.06 nd 0.33 4Adepxni 209 (7.1.7.2) 0.00-0.60 nd 0.06 nd 0.09 nd 0.32 4Adwxn 135 (0.6,7.1) 1.20-1.80 nd 0.08 nd 0.03 nd 0.40 4A1jge.i 173 (5.7,6.7) 1.20-1.80 nd 0.06 nd 0.05 nd 0.24 4Adezmo1 209 (7.1,7.2) 1.20-1.80 nd 0.06 nd 0.06 nd 0.32 4Adeemvci 135 (0.6,7.1) 1.80-2.40 nd 0.03 nd 0.03 nd 0.15 4Ad&*ep1 173 (5.7.6.7) 1.80-2.40 nd 0.06 nd 0.11 nd 0.32 4AePori 209 (7.1,7.2) 1.80-2A0 nd 0.08 nd 0.08 nd 0.28 4Acgwjce9i 135 (0.6,7.1) 2.40-3.00 nd 0.06 nd 0.10 nd 0.39 4Adsepme1 173 (5.7,6.7) 2.40-3.00 nd 0.07 nd 0.07 nd 0.38 4Adepmeu 209 (7.1,7.2) 2.40-3.00 nd 0.05 nd 0.07 nd 0.36 4Ad#epxn& 173 (5.7,6.7) 3.00-3.60 nd 0.03 nd 0.05 nd 0.21 4Atieeprgi 209 (7.1,7.2) 3.00-3.60 nd 0.08 nd 0.11 nd 0.36 4Adeepwvi 135 (0.6,7.1) 3.60-4.20 nd 0.04 nd 0.04 nd 0.27 4Adww*r1 173 (5.7,6.7) 3.60-420 nd 0.06 nd 0.11 nd 0.42 4Adewmei 135 (0.6,7.1) 4.20-4.80 nd 0.04 nd 0.04 nd 0.23 4Aa #p=*1 209 (7.1,7.2) 4.20-4.80 nd 0.08 nd 0.10 nd 0.41 4Ado9e=1 209 (7.1,7.2) 4.80-5.40 nd 0.08 nd 0.13 nd 0.40 4Ad.epxn2 155 (2.5.7.5) 0.00-0.60 nd 0.04 nd 0.04 nd 0.17 4A&.p,"2 155 (2.5,1.5) 0.00-120 0.10 nd 0.06 nd 023 4Adeexon2 209 (0.5,3.5) 0.30-0.75 nd 0.04 nd 0.05 nd 023 4A&W.p2 209 (0.5,3.5) 1.05-1.50 nd 0.04 nd 0.04 nd 0.28 4Adep=02 155 (2.5,1.5) 1.20-1.80 nd 0.05 nd 0.05 nd 0.23 4A&.p=*2 209 (0.5,3.5) 1.80-225 nd 0.03 nd 0.05 nd 021 4AdWPco2 155 (2.5,1.5) 1.80-2.70 nd 0.04 nd 0.06 nd 0.20 4Aftpen2 209 (0.5,3.5) 2.25-3.00 nd 0.04 nd 0.06 nd 024 4Adeop 2 155 (2.5,1.5) 3.00-4.20 nd 0.04 nd 0.04 nd 0.20 4AcW...2 209 (0.5,3.5) 3.30-3.75 nd 0.03 nd 0.05 nd 0.20 4A.prrs2 209 (0.5,3.5) 4.05-4.44 nd 0.03 nd 0.04 nd 0.17 4AjeepCcr2 155 (2.5,1.5) 420-5.25 nd 0.04 nd 0.06 nd 0.25 nd indicates non detect, MDA reported bNo entry in MDA columns isprovided when residual radioactivity is detected 2-112

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Survey Unit 5(1)

Description Survey Unit 5(1) is an area of approximately 600 m2 located at the southwest edge of the Containment Building. This location encompasses the Stack and the northern section of the Liquid Radwaste Vault. The Liquid Radwaste Vault is a subsurface concrete structure that contains the equipment used by the Liquid Radwaste Processing System. The roof of this structure is located at grade elevation and is composed of concrete covered by asphalt paving.

Additional subsurface structures include, the Stack base, Radwaste System piping, fiber optics, electrical conduit, and the footings and foundations of the Equipment Lock, Containment Building and Turbine Building.

History The HSA has identified radioactivity in this survey unit for localized areas of soil in close proximity to the former rail bed. This location was the transfer point for the removal of primary system resin and filters through disposal access hatches in the Liquid Radwaste Vault. Waste material was then routed to the Radwaste Building in preparation for shipment.

A contaminant migration pathway is known to have existed near the storage tank location in adjacent Survey Unit 5(2). The low topography formerly present along the rail bed once provided a storm water runoff pathway from the tank area into Survey Unit 5(1). Documented radiological events describe a number of piping leaks and spills that are known to have entered Survey Unit 5(1) through this drainage pathway.

Cleanup efforts have been conducted in this survey unit on several occasions. Following the removal of contaminated soil, clean fill was used to return remediated locations to proper grade.

As a result, activity depth profiles conducted in these areas have identified an increase in activity near the base elevation of former soil removal locations. This activity is believed to result from contamination left in place during the remediation process Radiological Status Survey Unit 5(1) is relatively small and complex survey area. The Stack and Liquid Radwaste Processing System currently remain in service. As a result, building foundations, subsurface piping, and electrical power hazards limit the extent of soil sampling in many locations.

Although trace values of Mn-54 were identified in two of the scoping survey samples used for design of the primary survey, Mn-54 was not identified in any subsequent characteriation survey conducted in Survey Unit 5(1). Elevated concentrations of Cs-137 were identified in several samples taken along the rail bed, a former contaminant migration pathway. Further characterization of these areas will continue as systems and equipment are removed from the site.

The results of characterization analyses to date indicate that cleanup efforts may be required following the removal of road surfacing along an area east of the rail bed. This location was paved to satisfy the engineering requirements for movement of spent fuel to the ISFSI. The asphalt paving is scheduled to be removed following dismantlement of the Stack and Liquid Radwaste Processing System.

2-113

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Excavation will be required for the removal of subsurface structures and equipment in this area.

Characterization surveys are scheduled to continue during this excavation and remediation efforts will be conducted as necessary to satisfy the requirements for final status surveys.

Survey Unit 5(1) is designated as Class 1.

Primary Survey Desimn

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Co-60 Mn-54 Mean value (pClg) 2.62 0.61 0.049 Standard deviation (a) 5.11 1.11 0.09 Applying the Unity Rule, CR I = r 0 CS 2

+4 C0 2

I +1 4 7 Mn 2

5 .1 1 Cs 9 9.Co 4 Mn 2 (01___

1(5.11) .11 4 9 9 Co 0.09 4 7 4 Mns 1UR 1.02

=UR For the Unity Rule the DCGL for the weighted sum is 1.0. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR o.5 =049 a 1.02 With a and P error levels of 0.05, the Sign Test requires 136 sample data points.

A sample size of this magnitude was considered impractical for the primary survey of this complex area. A target value of 50 data points was selected for sample location and spacing determination. Due to inaccessible areas of this survey unit, only 33 data points were available for sampling within the survey unit. This sample size was considered sufficient to develop an initial comprehensive evaluation of the survey unit and provide the necessary input for the design of follow-up supporting surveys.

2. Sample Locations Sample locations were systematically selected in random start, square grid, pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 30 X 30 meters Random Numbers 0.11, 0.99 X = (0.11)(30 m) = 3.4 m Y = (0.23)(30 m) = 6.9 m 2-114

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Sample Spacing L = V;/ = 5 = 3.5 meters Sugnortina Surveys Supporting surveys 5(1 )A2 and 5(1 )A3 were conducted prior to construction of the ISFSI road.

Real time measurements performed during roadway construction identified elevated contamination levels in a suspect area along the former railroad grade. A remediation of this area was conducted; however, the extent of cleanup was limited to the amount of soil disturbance required for removal of the rail bed and surface preparation for construction of the roadway (5(1)B 1).

Deep-core sampling was conducted in five survey efforts to investigate the extent of potential subsurface contamination. The maximum survey depth was approximately six meters. Sample point locations were judgmentally selected based on historical data, process knowledge, survey analyses, and location availability due to subsurface obstructions and equipment.

2-115

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Data Summary The data tabulated below reflects the current status of the survey unit. Data analyses for samples collected from locations that were later remediated have been excluded. The results of survey analyses for all samples collected in each individual survey of Survey Unit 5(1) are included in the survey results table.

Survey Unit 5(1)

Survey No. of Samples Radionuclides (pCg) Max. Value (pClg) 5(1)A 1 33 Cs1 37 3.26 12.74

_ _ _ _ _ _ C06w 0.54 0.73 5(1)A2 13 CS1 3 7 0.45 1.09

_____ CO6 nd nd Cs137 0.06 0.07 5(1) 3 C060 nd nd 5(1)B 1 23 Cs 137 1.81 0.16 16.59 0.76 Cow 5(12)dpcore1 CS137 0.06 0.09 Cow' nd nd CS 137 1.21 12.94w 5(1)d~p..2 25 C06 0.19 0.47 5(1)eoore3 I nd 64 CS13 0.30 0.79 5(1)dftp4 5 00* 0.17 0.17 51dpwO8Cs 137 2.22 6.41 Scodepcrs 0.36 0.66

• nd indicates non detect

• • Co-60 detected inonly one sample

• • • Sample taken at (15-30 cm) 2-116

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 5(1)

Scale: E I I 2b M,.

Legend

_ Survey Unit 5(1) Numbered Local Coordinate Grid Elf Buildings

• Soil Sample Locations Big RCk Foint I

- _=Ib

(-O&

2-117

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-I37 Co-60 Am-241 survey Grid Coorinat Dept (pCig) (pMi/g) bJA (Pcvg)

(x,y) (m) Activity* DA b Activity*MDADb Activity*MIDA b 5(1)AI 266 (3.4,5.0) 0.0-0.15 nd 0.11 nd 0.08 ,d 0.42 5(1)AI 266 (5.9.5.0) 0.0-0.15 nd 0.12 nd 0.07 nd 0.39 5(1)A, 266 (3.4.8.4) 0.0-0.15 nd 0.06 nd 0.10 nd 0.39 5(1)A1 267 (0.0,5.0) 0.0-0.15 nd 0.06 nd 0.06 nd 0.40 5(1)AI 267 (0.0,8.4) 0.0-0.15 nd 0.07 nd 0.06 nd 0.38 5(1)AI 247 (3.4,1.9) 0.0-0.15 nd 0.11 nd 0.09 nd 0.41 5(1)AI 247 (3.4,5.4) 0.0-0.15 3.10 0.43 nd 0.42 5(1)AI 247 (3.4,8.9) 0.0-0.15 nd 0.09 nd 0.02 nd 0.39 5(1)AI 248 (0.0,1.9) 0.0-0.15 nd 0.04 nd 0.03 nd 0.19 5(1)A, 248 (0.0,5.4) 0.0-0.15 0.21 nd 0.13 nd 0.37 248 (0.4,8.9) 0.0-0.15 12.74 0.7 nd 0.42 5(1)A 1 _

5(1)A 1 248 (3.9,8.9) 0.0-0.15 nd 0.08 nd 0.09 nd 0.42 5(1)A, 248 (7.4,8.9) 0.0-0.15 nd 0.04 nd 0.05 nd 0.18 5(1)AI 249 (7.9,5.5) 0.0-0.15 nd 0.09 nd 0.08 nd 0.41 5(1)AI 249 (9.0,5.5) 0.0-0.15 0.33 nd 0.12 nd 0.36 5(1)A1 249 (0.9.8.9) 0.0-0.15 nd 0.05 nd 0.11 nd 0.38 5(1)A, 249 (4.4,8.9) 0.0-0.15 nd 0.11 nd 0.10 nd 0.42 5(1)AI 249 (7.9,8.9) 0.0-0.15 nd 0.05 nd 0.04 nd 0.23 5(1)AI 228 (3.4,2A) 0.0-0.15 nd 0.08 nd 0.08 nd 0.30 5(1)AI 228 (6.9,2.4) 0.0-0.15 8.03 0.73 nd 0.43 5(1)Ai 228 (3.4,5.9) 0.0-0.15 nd 0.05 nd 0.05 rnd 0.20 5(1)AI 228 (6.9,5.9) 0.0-0.15 nd 0.04 nd 0.04 nd 0.18 5(1)Ai 228 (3.4,9.4) 0.0-0.15 nd 0.09 nd 0.10 nd 0.40 5(1)AI 228 (6.9,9.4) 0.0-0.15 nd 0.06 nd 0.09 nd 0.37 229 (0.0,2.4) 0.0-0.15 4.50 0.28 nd 0.37 5(1)A, 5(1)AI 229 (7.4,2.4) 0.0-0.15 nd 0.11 nd 0.09 nd 0.40 5(1)A, 229 (0.4,5.9) 0.0-0.15 0.17 nd 0.06 nd 0.27 5(1)AI 229 (7.4,6.4) 0.0-0.15 0.17 nd 0.09 nd OA3 5(1)A, 229 (0.5,9.5) 0.0-0.15 nd 0.11 nd 0.10 nd 0.42 5(1)AI 229 (4.5,9.6) 0.0-0.15 nd 0.08 nd 0.05 nd 0.34 5(1)A 1 230 (0.9,2.4) 0.0-0.15 0.12 nd 0.05 nd 021 5(1)AI 230 (4.4,2.4) 0.0-0.15 nd 0.05 nd 0.11 nd 0.38 5(1)AI 230 (7.9,2.4) 0.0-0.15 nd 0.05 nd 0.10 nd 0.33 5(1)AI 247 (6.9,8.9) 0.0-0.15 1.66 0.20 nd 0.31 5(1)A, 247 (5.9,5.4) 0.0-0.15 0.97 0.14 nd 0.26 5(1)At 247 (7.0,1.9) 0.0-0.15 2.65 0.17 nd 0.34 5(1)A, 266 (6.9,8.5) 0.0-0.15 nd 0.07 nd 0.10 nd 0.35

• nd Indicates non detect, MDA provided b No entry in MDA columns Is provided when residual radioactivity Is detected c Italicized entries Indicate samples that were collected prior to remediation 2-118

Revision 0 BRP LICENSE TERMINATION PLAN 411/2003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Cs-137 Co-60 Am-241 Coordinate Depth (pCvg) (pCVg) (pC1/g)

Survey' Grid MDA (x-y) (m) Activity *MDA b Activity ' MDA b Activlty a 266 (4.2,9.3) 0.0-0.15 nd 0.05 nd 0.06 nd 0.33 5(1)A 2 0.0-0.15 0.18 nd 0.07 nd 0.27 5(1)A 2 266 (6.2_5.3) 266 (8.6,5.3) 0.0-0.15 nd 0.04 nd 0.07 nd 0.28 5(1)A 2 247 (2.9,2.9) 0.0-0.15 nd 0.05 nd 0.07 nd 0.28 5(1)A.2 247 (4.2.9.3) 0.0-0.15 0.08 nd 0.07 rnd 0.29 5(1)A 2 (8.6,7.1) 0.0-0.15 1.09 nd 0.07 nd 0.27 5(1)A 2 247 _

228 (2.9,2.9) 0.0-0.15 nd 0.07 nd 0.04 nd 0.26 5(1)A 2 228 (4.2,9.3) 0.0-0.15 nd 0.05 nd 0.07 nd 0.26 5(1)A 2 228 (6.2,8.9) 0.0-0.15 nd 0.05 nd 0.07 nd 0.29 5(1)A 2 (8.6,8.9) 0.0-0.15 nd 0.04 nd 0.06 nd 0.22 5(1)A 2 228 228 (6.8.7.0) 0.0-0.15 nd 0.05 nd 0.06 nd 0.23 5(1)A 2 228 (6.2,3.0) 0.0-0.15 nd 0.04 nd 0.06 nd 0.35 5(1)A 2 228 (8.8,3.0) 0.0-0.15 nd 0.06 nd 0.07 nd 0.26 5(1)A 2 228 (6.8,1.1) 0.0-0.15 1.72 0.14 nd 0.29 5(1)A 2 247 (6.Z 7.1) 0.0-0.15 nd 0.06 nd 0.05 nd 0.27 5(1)A2 247 (6.8,5.2) 0.0-0.15 4.42 0.42 nd 0.43 5(1)A 2 247 (6.2,1.2) 0.0-0.15 0.17 nd 0.07 nd 0.26 5(1)A 2 247 (8.6,1.2) 0.0-0.15 4.72 0.61 nd 0.41 5(1)A 2 266 (6.8,9.3) 0.0-0.15 nd 0.06 nd 0.06 nd 0.28 5(1)A 2 266 (9.9,8.9) 0.0-0.15 5.68 0.48 nd 0.42 5(1)A 2 266 (9.9,9.3) 0.0-0.15 nd 0.04 nd 0.06 nd 0.28 5(1)A 2 247 (3.0,8.0) 0.90-1.05 nd 0.04 nd 0.04 nd 0.27 5(1)A 3 (4.5,8.0) 0.901.05 nd 0.04 nd 0.05 rid 0.25 5(1)A 3 247 (6.0,8.0) 0.90-1.05 rnd 0.03 nd 0.04 nd 0.23 5(1)Aa 247 228 (3.0,2.0) 0.90-1.05 nd 0.05 nd 0.05 nd 0.25 5(1)A3 228 (4.5,2.0) 0.90-1.05 nd 0.05 nd 0.05 nd 025 5(1)A3 228 (6.0,2.0) 0.90-1.05 nd 0.04 nd 0.06 nd 0.24 6(1)A 3 d d 0.00-1.00 0.06 nd 0.06 nd 0.24 5(1)A3 5(1)B, 266 (6.0,9.0) 0.30-0.45 2.66 0.47 rnd 0.38 266 (8.0,9.0) 0.30-0.45 0.72 0.20 rnd 028 5(1)BI _

266 (9.0,8.5) 0.30-0.45 0.94 0.02 rnd 028 5(1)B, 247 (7.0,0.5) 0.300.45 0.36 0.05 rnd 0.32 5(1)B, 247 (6.0,1.0) 0.30-0.45 2.19 0.16 rnd 0.35 5(1)BI 5(1)B1 247 (8.0,1.0) 0.30-0.45 0.91 _ 0.07 rid n 0.31 5(1)BI 247 (7.0,2.5) 0.30-0.45 0.24 nrid 0.06 rnd 0.31 5(1)Ba 247 (6.0,3.0) 0.300.45 0.48 l l 0.11 rid n 0.24 247 (8.0,3.0) 0.30-OA5 1.26 l_ l 0.07 rid n 0.32 5(1)Bi 5(1)Bi 247 (7.0,4.5) 0.30-0.45 0.25 nrid 0.06 rnd 0.30

'rnd Indicates non detect, MDA provided b No entry in MDA columns is provided when residual radioactivity Isdetected c Italicized entries indicate samples that were collected prior to remediation dComposite sample 2-119

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Grid Coordate Coriae (x.Y)

Depth l Dp(Pcvg) t)

CS-137 Activity a MDA b Co-60 (Cig) Jl Am-241 (pCilg)

Activity a MDA b Activity a MDA b 5(1)B 1 247 (6.0,5.0) 0.30-OA5 0.66 0.10 nd 0.30 5(1)B 1 247 (8.0,5.0) 0.3D-0.45 0.49 nd 0.08 nd 0.27 5(1)BI 247 (7.0,6.5) 0.30-0.45 0.07 nd 0.05 nd 0.27 5(1)B _ 247 (6.0,7.0) 0.30-0.45 0.22 0.06 nd 0.31 5(1)Bi 247 (8.0,7.0) 0.30-OA5 0.41 0.03 nd 0.22 5(1)B, 247 (7.0,8.5) 0.30-0.45 0.13 nd 0.06 nd 0.22 5(1)Bt 247 (6.0,9.0) 0.30-0.45 0.70 0.06 nd 0.28 5(1)B, 247 (8.0,9.0) 0.30-0A5 0.77 nd 0.09 nd 0.26 5(1)BI 247 (9.0,0.0) 0.30-0.45 3.17 0.18 nd 0.35 5(1)B, 247 (9.0,1.0) 0.30-0.45 1.19 0.05 nd 0.29 5(1)B 1 247 (9.0.2.0) 0.30-0.45 5.53 0.14 nd 0.39 5(1)B 1 247 (9.0,3.0) 0.30-0.45 16.59 0.76 nd 0.42 5(1)Bl 228 (7.0,0.5) 0.30-0.45 1.58 0.16 nd 0.27 5(1)Adwp~v. 247 (7.1,8.1) 0.60-1.20 5.00 0.23 nd 0.42 5(1)Ad~pwmi 248 (1.7.8.3) 0.0-0.60 nd 0.05 nd 0.04 nd 0.19 5(1)Adexpi 228 (7.1,4.9) 0.0-0.60 nd 0.04 nd 0.04 nd 0.19 5(1)Adapix. 247 (7.1,8.1) 0.60-1.20 0.09 nd 0.08 nd 0.39 5(1)Ads99pi 248 (1.7,8.3) 0.60-1.20 nd 0.08 nd 0.08 nd 0.31 5(1)A9,cop1i 228 (7.1,4.9) 0.60-1.20 nd 0.04 nd 0.04 nd 0.22 5(1)AdxeoD.1 247 (7.1,8.1) 1.20-1.80 0.04 nd 0.04 nd 0.20 5(l)Adeepe1 248 (1.7,8.3) 1.20-1.80 nd 0.06 nd 0.06 nd 0.29 5(1)A&.m.i 228 (7.1,4.9) 1.20-1.80 nd 0.06 nd 0.08 nd 0.36 5(l)Aimexoi 247 (7.1,8.1) 1.80-2AO 0.05 nd 0.06 nd 0.29 5(1)A&..i 228 (7.1,4.9) 1.80-2AO nd 0.05 nd 0.10 nd 0.35 5(1)Adsepwel 248 (1.7,8.3) 1.80-3.00 nd 0.02 nd 0.06 nd 0.22 5(1)Aa..e,1 247 (7.1,8.1) 2.40-3.00 nd 0.06 nd 0.10 nd 0.34 5(1)A*.px.i 228 (7.1.4.9) 2.40-3.00 nd 0.03 nd 0.04 nd 0.21 5(1)Ad.Bep=* 247 (7.1,8.1) 3.00-3.60 nd 0.03 nd 0.04 nd 0.19 5(1)Adeoex1i 228 (7.1,4.9) 3.00 -3.90 nd 0.06 nd 0.09 nd 0.39 5(1)Adjsepcc 248 (1.7,8.3) 3.00 - 5.10 nd 0.05 nd 0.08 nd 0.31 5(1)Ad~eopm 1 247 (7.1,8.1) 3.60-4.20 nd 0.04 nd 0.04 nd 0.23 5(1)Ad*ep.1 228 (7.1,4.9) 3.90 -4.20 nd 0.08 nd 0.13 nd 0.39 5(lyd"paw1 247 (7.1,8.1) 4.20 -4.80 nd 0.03 nd 0.04 nd 0.23 5(1)Ade.p.1 248 (1.7,8.3) 5.10 -6.00 nd 0.06 nd 0.08 nd 0.36 5(1)A(cedph 228* (7.1,4.9) 0.0-0.60 nd 0.07 nd 0.05 nd 0.26 5(1)A.pw2 248 [ (0.0,5.4) 0.15-0.30 12.94 0.47 nd OA3 5(1)A_____ 248 (0.4,8.9) 0.15-0.30 1.14 0.10 nd 0.29 and Indicates non detect, MDA provided b No entry In MDA columns isprovided when residual radioactivity Is detected c ltalicized entries Indicate samples that were collected prior to remediation 2-120

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results I Coordinate Depth Cs-137 l Co-60 Am-241 Survey Grid (x~)(n pCVg) b (pCig) (pCVg)

(x=y) (m) Activity ' MDAb Activity Ki DAb Activity 'M DDAb 5(1)A.e.x.2 228 (6.9,2.4) 0.15-0.30 0.10 nd 0.07 nd 0.42 5(1)Ado~p.2 229 (0.4,2.4) 0.15-0.30 0.13 nd 0.09 nd 0.42 5(1)A&.eon. 229 (0.4,5.9) 0.15-0.30 nd 0.10 nd 0.09 nd 0.38 5(1)A&.P. 229 (7.4.6.4) 0.15-0.30 nd 0.10 nd 0.07 nd 0.43 5(1)Adow.2 230 (0.9,2.4) 0.15-0.30 0.08 0.03 nd 0.20 5(1)AOw..r2 247 (7.0,1.9) 0.30-0.60 0.24 nd 0.05 nd 0.23 5(1)Aft.P2 248 (0.0,5.4) 0.30-0.60 1.92 0.15 nd 0.38 5(1)A".era 248 (0.4,8.9) 0.30-0.60 1.91 0.30 nd 0.35 5(1)Ad..e.a 228 (6.9,2.4) 0.30-0.60 0.27 nd 0.08 nd 0.35 5(1)Ad 4 .po. 230 (0.9,2.4) 0.30-0.60 0.10 nd 0.09 nd 0.41 5(1)Acwp.-.2 228 (6.9,2.4) 0.60-0.75 0.53 0.06 nd 0.31 5(1)Aeepx.2 247 (7.0,1.9) 0.60-0.90 0.35 nd 0.06 nd 0.24 5(1)Adb.por 248 (0.0.5.4) 0.60-0.90 0.64 nd 0.06 nd 0.28 5(1)Adrp.s2 248 (0.4,8.9) 0.60-0.90 1.27 0.20 nd 0.31 5(1)A&,...2 248 (0.0,5.4) 0.90-1.20 2.99 0.19 nd 0.39 5(1)A^mww 248 (0.4.8.9) 0.90-1.20 0.32 nd 0.09 nd 0.32 5(1)Absa.2 248 (0.0,5A) 1.20-1.50 0.34 nd 0.07 nd 0.23 5(1)Ad..2 248 (0.4.8.9) 1.20-1.50 0.29 nd 0.07 nd 0.23 5(1)Ad.e4cv 248 (0.0.5.4) 1.20-1.80 1.58 0.20 nd 0.33 5(1)Adepo.2 248 (0.4,8.9) 1.20-1.80 0.33 nd 0.12 nd 0.42 5(1)Adp.e2 248 (0.0,5.4) 1.80-2.10 0.06 nd 0.08 nd 0.37 5(1)A4 p.e.2 248 (0.4,8.9) 1.80-2.10 0.17 nd 0.05 nd 0.24 5(1)Adeop.2 248 (0.4,8.9) 2.10 - 2.40 0.12 nd 0.06 nd 0.22 5(1)Ad..pw.2 247 (7.0.1.9) 0.15-0.30 0.71 0.06 nd 0.29 5(1)Adwp..2 247 (6.9,5.4) 0.15-0.30 0. 18 nd 0.05 nd 0.21 5(1)Am.eer2 247 (6.9,8.9) 0.15-0.30 0.09 nld 0.04 nd 0.18 5(1)AdW.a . 228 (2.5,7.5) 0.0-0.73 nd 0.05 nd 0.05 nd 0.25 5(1)Adft.r4 249 (7.9,5.5) 0.30-0.60 nd 0.03 nd 0.04 nd 0.23 5(1 PAd.. 229 (0.4,2.4) 0.30-0.60 0.79 0.17 nd 0.23 5(1)Adcp=4 249 (7.9,5.5) 0.60-0.90 nd 0.03 nd 0.04 nd 0.19 5(1)Ad"P. 229 (0.4,2.4) 0.60-0.90 0.08 nd 0.06 nd 0.24 5(1)Adwop=4 229 (0.4,2.4) 0.90-1.20 0.03 nd 0.05 nd 0.19 5(1)Ad.p=s 228 (8.6,8.9) 0.15-0.30 0.07 nd 0.06 nd 0.31 5(1)Aftspco 228 (8.6,3.0) 0.15-0.30 0.18 0.19 l l nd 0.30 5(1)Aoes.5 247 (8.6,1.2) 0.30-0.45 6.41 0.24 nd 0.42 5(1)Ads. 228 (8.6,8.9) 0.30-0.45 nd 0.06 nd 0.06 nd 0.26 nd Indicates non detect, MDA provided b No entry In MDA columns is provided when residual radioactivity Is detected c Italicized entries indicate samples that were collected prior to remediation 2-121

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4J1/2003 Appendix 2-E, Characterization Survey Results Survey Grid Coordinate Svr Coriae 28(8,30(x-y)

D t Dph(pcvg)

(in) At1Vt Cs-137 b

aMDA bActivityt Co-60 (pCilg)

MDA jl bActivity Ain-241 (pCvg) a MDA b 5(1)Adsp.5 228 (8.6,3.0) 0.30-0.45 nd 0.04 nd 0.05 nd 0.23 5(1)Ad.p.s 228 (8.6,3.0) 0.4540.60 nd 0.05 nd 0.08 nd 0.24 5(1)AcYp= 228 (8.6.8.9) 0.45-0.90 nd 0.05 nd 0.06 nd 0.26 5(1)Adnps.5 228 (8.6,8.9) 0.90-1.05 nd 0.06 nd 0.06 nd 0.29 5(1)Ad.p..5 247 (8.6,1.2) 0 1-0.30 32.8 0.66 nd 0.43 a nd Indicates non detect. MDA provided bNo entry InMDA columns is provided when residual radioactivity is detected cItalicized entries Indicate samples that were collected prior to remediation 2-122

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 5(2)

Description Survey Unit 5(2) is an area of approximately 800 m2 located immediately west of the Turbine Building. This location encompasses the Waste Hold Tanks, Condensate Storage Tank, Demineralized Water Tank, and the northern section of the Liquid Radwaste Vault area. The Liquid Radwaste Vault is a subsurface concrete structure that contains the equipment used for liquid radwaste processing. The roof of this structure is located at grade elevation and is composed of concrete covered with asphalt paving. Additional subsurface structures include, the Stack foundation, Liquid Radwaste Processing System piping, fiber optics, electrical conduit, and Turbine Building and storage tank foundations.

History The HSA has identified radioactivity in this survey unit for localized areas of soil in close proximity to the former rail bed. Both Survey Units 5(1) and 5(2) share similar operational histories and contain components of the Liquid Radwaste Processing System. This location is a transfer point for the removal of primary system resin and filters through disposal access hatches in the Liquid Radwaste Vault. Waste material was then routed to the Radwaste Building in preparation for shipment.

A contaminant migration pathway existed along the rail grade in this survey unit. The low topography formerly present at this location provided a storm water runoff pathway from the tank area into Survey Unit 5(1). Documented radiological events describe a number of piping leaks and spills that are known to have occurred in this area. Remediation efforts have been conducted in this survey unit on several occasions.

Following the removal of contaminated soil, clean fill was used to return remediated locations to proper grade. As a result, activity depth profiles conducted in these areas have Identified an increase in activity near the base elevation of soil removal locations. This activity is believed to result from contamination left in place during the remediation process.

Radiolo-gical Status Survey Unit 5(2) is a relatively small and complex survey area. The Liquid Radwaste Processing System remains in service at this time; therefore, building foundations, subsurface piping, and electrical power hazards limit the extent of soil sampling In many locations.

Although trace values of Mn-54 were identified in one of the scoping survey samples used for design of the primary survey, Mn-54 was not identified in any subsequent characterization survey conducted in Survey Unit 5(2). Elevated concentrations of Cs-1 37 were identified in several samples taken near railroad grade along the former storm water runoff pathway.

The results of characterization analyses to date indicate that remediation may be required following the removal of the road surface east of the rail bed. This location was paved to satisfy the engineering requirements for movement of spent fuel to the ISFSI. The asphalt paving Is scheduled for removal following demolition of the Stack and the Liquid Radwaste Processing System.

2-123

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Excavation will be required for the removal of subsurface structures and equipment in this area.

Characterization surveys are scheduled to continue during this process and remediation efforts will be conducted as necessary to satisfy the requirements for final status surveys. This survey unit is considered a Class 1 Area.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Co-60 Mn-54 Mean value (pCilg) 2.14 0.69 0.043 Standard deviation (a) 1.40 1.24 0.106 Applying the Unity Rule, C22 5.1 1CCos Cs 4 4 7 4 Mn a 1.40 t1= I + 24 + F.106 2 H 5

• 11CS) k4 9 9 Co '..4 74 Mn) a =0.37 For the Unity Rule, the DCGL for the weighted sum is 1.0. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR = 1- 0.5 = 1.3 a 0.37 With a and I error levels of 0.05, the Sign Test requires 21 sample data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid, pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 30 X 30 meters Random Numbers 0.14, 0.43 X = (0.14)(30 m) = 4.2 m Y = (0.43)(35 m) = 15.2 m Sample Spacing L = V;% = Y = 5.3 meters As a conservative measure 26 samples were collected using 5 meter spacing.

2-124

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Suoportina Surveys Supporting survey 5(2)A 2, was conducted to provide a radiological evaluation of area soils prior to construction of the ISFSI road. Historical documentation and real time measurements performed during roadway construction identified elevated contamination levels in an area along the former railroad grade. A remediation of this area was conducted; however, the extent of cleanup was limited to the amount of soil disturbance required for removal of the rail bed and preparation of the surface required for construction of the roadway (Survey 5(2)B,).

Deep-core sampling was conducted in five survey efforts to investigate the extent of potential subsurface contamination. The maximum survey depth was approximately 14 meters. Sample point locations were judgmentally selected based on historical data, process knowledge, survey analyses, and location availability due to subsurface obstructions of systems and equipment.

Data Summary The data tabulated below reflects the current status of the survey unit. Data analyses for samples collected from locations that were later remediated have been excluded. The results of survey analyses for all samples collected In each individual survey of Survey Unit 5(2) are included in the Survey Results table.

Survey Unit 5(2)

SurvelNo.

SuvySamples l Radionuclides*

Radlouclies' Mean Max. Value i/ilg 5(2)A 26 Cs137 0.28 1.39 C060 0.20 0.42 5(2)A2 7 Cs13, 0.04 0.04 5(2)B1 6 CS137 2.29 5.25 COW 0.07 0.09 2 16 Cs13, 1.15 2.73 5(2)cwda1 Cog, nd nd S()apce 2CS 137 0.79 2.72 5(2)deep___2 12 Cosw 0.31 0.98 19 Cs 2.87 30.70

____________ CO 1 37* 1.96 7.50 19Cs 13 0.25 0.67

_(2)dp__4 19 Cos13 0.54 1.45 5 2

( )d.epore5 3 CS1 3 7 nd nd

_______ Cow nd nd

• nd Indicates non detect Co-60 detected in a limited number of samples 2-125

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 5(2) 1 5 10 26 Metewr Legend M 5(2) Numbered Local Coordinate Grid

= Buildings&Structures

• Soil Sample Locations Big Rock Polin C-67 2-126

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Survey Grid Codnt l Coordinate D th(Pci/g) j (meters) Activity Cs-137 MDA b

[ Co-60 (pCig)

Activity DA Arn-241 (pCi/g)

Actvity MDA b 5(2)Ai 266 (4.2,02) 0.00-0.15 nd 0.12 nd 0.10 nd 0.40 5(2)AI 266 (9.2,02) 0.00-0.15 1.39 0.42 nd 0.34 5(2)A, 304 (4.2.52) 0.00-0.15 nd 0.08 nd 0.06 nd 0.37 5(2)A 1 304 (9.2,52) 0.00-0.15 0.45 0.26 nd 0.27 5(2)AI 304 (4.2.0.2) 0.00-0.15 nd 0.08 nd 0.08 nd 0.40 5(2)AI 304 (9.2.0.2) 0.00-0.15 0.06 0.13 nd 0.31 5(2)AI 305 (9.2,0.2) 0.00-0.15 0.19 0.08 nd 0.21 5(2)A, 316 (4.2.5.2) 0.00-0.15 0.11 nd 0.15 nd 0.35 5(2)AI 316 (9.2.5.2) 0.00-0.16 0.10 0.15 nd 0.32 5(2)A, 317 (4.2.5.5) 0.00-0.15 0.14 nd 0.07 nd 0.24 5(2)Ai 317 (9.2,5.2) 0.00-0.15 022 0.14 nd 0.21 5(2)AI 316 (4.2,0.2) 0.00-0.15 nd 0.08 nd 0.08 nd 0.37 5(2)Ai 316 (9.2,0.2) 0.00-0.15 0.10 nd 0.05 nd 020 5(2)Ai 317 (4.2,0.2) 0.00-0.15 0.19 nd 0.12 nd 0.41 5(2)Ai 317 (9.0,0.2) 0.00-0.15 nd 0.13 nd 0.11 nd 028 5(2)AI 328 (4.2.5.2) 0.00-0.15 nd 0.09 nd 0.08 nd 0.35 5(2)AI 328 (9.2,5.2) 0.00-0.15 nd 0.03 nd 0.05 nd 0.19 5(2)Ai 329 (9.2.5.2) 0.00-0.15 nd 0.10 nd 0.10 nd 0.39 5(2)AI 330 (4.2,52) 0.00-0.15 nd 0.04 nd 0.05 nd 0.21 5(2)Ai 330 (9.2,52) 0.00-0.15 nd 0.09 nd 0.06 nd 0.43 5(2)AI 328 (4.2,02) O.O-0.15 nd 0.07 nd 0.09 nd 0.38 5(2)A 1 328 (9.2,02) 0.00-0.15 nd 0.10 nd 0.10 nd 0.42 5(2)A 1 329 (4.2,0.2) 0.00-0.15 nd 0.12 nd 0.06 nd 0.36 5(2)A, 329 (9.2,02) 0.00-0.15 0.09 nd 0.09 nd 0.39 5(2)Ai 330 (4.2,02) 0.00-0.15 nd 0.07 nd 0.10 nd 0.42 5(2)Ai 330 (9.2,02) 0.00-0.15 nd 0.09 nd 0.06 nd 0.39 5(2)A 2 328 (2.9,2.9) 0.00-0.15 nd 0.04 nd 0.06 nd 0.28 5(2)A 2 328 (4.2,9.3) 0.00-0.15 nd 0.04 nd 0.05 nd 0.25 5(2)A 2 316 (2.9,2.9) 0.00-0.15 nd 0.04 nd 0.05 nd 0.23 5(2)A 2 316 (42,9.3) 0.00-0.15 0.04 nd 0.05 nd 0.24 5(2)A 2 304 (2.9,2.9) 0.00-0.15 nd 0.04 nd 0.06 nd 0.26 5(2)A 2 304 (4.2,9.3) 0.00-0.15 nd 0.04 nd 0.05 nd 0.27 5(2)A 2 266 (2.9,2.9) 0.00-0.15 nd 0.04 nd 0.07 nd 0.28 5(2)Bi 304 (6.0,0.0) 0.30-0.45 0.98 nd 0.06 nd 0.31 5(2)Bi 304 (8.0,0.0) 0.30-0.45 5.25 nd 0.07 nd 04A1 5(2)BI 304 (6.0,2.5) 0.30-0.45 0.09 nd 0.07 nd 0.30 nd indicates non detect, MDA provided b No entry InMDA columns Is provided when residual radioactivity is detected 2-127

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results f

Survey Grid Coint Coriat (x,y) et e1 lmete)

Cs-I137 (pCilg)

[Activity U MDA b Co-60 (pCilg)

Activity'- MDA b

[ Am-241 (pCifg)

Activity a UVDA-5(2)BI 304 (8.0,2.5) 0.30-0.45 1.87 _ nd 0.07 nd 0.35 5(2)B, 304 (6.0,5.0) 0.30-0.45 1.18 l 0.09 nd 0.32 5(2)B, 304 (8.0,5.0) 0.30-OA5 4.30 0.04 nd 0.36 5(2)Ad_9p=__ 304 (7.1,1.7) 0-0.30 1.68 nd 0.08 nd 0.26 5(2)A___ pwm 304 (7.1,1.7) 0.60-1.80 2.73 nd 0.08 nd 0.38 5(2_Ad__pwm 304 (7.1,1.7) 1.80-2AO 0.10 nd 0.06 nd 0.23 5(2A______ 304 (7.1,1.7) 2.40-3.60 nd 0.04 nd 0.07 nd 0.26 5(2_Ad.____ 304 (7.1.1.7) 3.60-420 nd 0.04 nd 0.07 nd 0.33 5(2)Ad.P1 304 (7.1,1.7) 4.20-4.80 nd 0.08 nd 0.13 nd 0.38 5(2yAdo.p.1 304 (7.1,1.7) 4.80-5.40 nd 0.03 nd 0.04 nd 0.24 5(2)Adeopmi 304 (7.1,1.7) 10.2-10.8 nd 0.04 nd 0.11 nd 0.36 5(2)Adepx.1 304 (7.1,1.7) 11.7-12.3 nd 0.07 nd 0.09 nd 0.39 5(2)Adeeq.i 304 (7.1,1.7) 13.2-13.8 nd 0.03 nd 0.06 nd 0.24 5(2)A&.p.., 266 (7.1,2.1) 0-0.30 0.10 nd 0.04 nd 0.24 5(2)Adqepa*1 266 (7.1,2.1) 0.60-1.20 nd 0.10 nd 0.06 nd 0.35 5(2)A*.PX., 266 (7.1,2.1) 1.20-2.40 nd 0.05 nd 0.05 nd 0.20 5(2)A*.w___ 266 (7.1,2.1) 2.40-3.00 nd 0.07 nd 0.08 nd 0.40 5(2)A&dws.1 266 (7.1,2.1) 3.00-3.60 nd 0.30 nd 0.04 nd 0.18 266 (7.1.2.1) 3.60-420 nd IL 0.06 I- nd4 O.O

- Ii no 0.39 fit2 9fif (to2 ( 21 015-0.30 0.41 0.18 nd 0.32

-%'IM v I---- -.- .. _ _.

5(2)A~v.-.2 266 (92.0.2) 0.30-0.60 021 nd 0.13 nd OAO 5(2yA~dp.-.2 266 (9.2,0.2) 0.60-0.90 nd 0.11 nd 0.12 nd 0.34 5(2Adbp..2 304 (9.2,5.2) 0.15-0.30 0.60 0.19 nd 0.25 5(2)Adwp=. 2 304 (9.2,52) 0.30-0.60 0.16 0.08 nd 0.27 5(2)Ad.pe.2 304 (9.2,52) 0.60-0.90 0.22 0.16 nd 029 5(2)AdW=p 2 304 (9.2,02) 0.15-0.30 1.39 0.14 nd 0.23 5(2)Ad9eWC2 304 (9.2,0.2) 0.30-0.60 1.81 0.50 nd 0.33 5(2)Adee p=02 304 (9.2,0.2) 0.60-0.90 2.72 0.98 rid 0.41 5(2)Adbp..2 316 (9.2,5.2) 0.15-0.30 0.16 nd 0.13 nd 0.43 5(2)Aft..z. 2 316 (9.2,5.2) 0.30-0.60 0.80 027 nd 0.34 5(2)A4P..X2 316 (92.5.2) 0.60-0.90 0.21 nd 0.11 nd 0.38 5(2)Adm.x3 266 (9.9,4.6) 0.00-0.30 30.70 7.5 l nd 0.43 5(2 )A&.p.a 266 (9.9,4.6) 0.30-0.60 0.89 0.15 l nd 0.26 5(2)A&.px3 266 (9.9,4.6) 0.60-0.90 0A1 0.11 l nd 0.23 5(2)A&Ws3n 266 (9.9,4.6) 0.90-1.20 0.11 nd 0.05 l nd 021 5(2)Aepxrn3 266 (9.9,4.6) 1.20-1.50 0.06 nd 0.05 l nd 021 5(2)Adeexn3 266 (9.9,4.6) 1.50-1.80 0.04 l rnd 0.05 rnd 0.22 5(2)A&".,n3 304 (9.9,5.0) 0.60-0.90 0.13 l nd 0.07 nd 021

' nd indicates non detect, MDA provided b No entry In MDA columns Is provided when residual radioactivity Is detected 2-128

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey IGrid i.Coordinate (XY) rJCs-137 Depth (meters) *Activity (pCi/g)

DA I

c C CO-60 (Pcilg)(pig DA '

T AM-241 Amt-2ityya MDA b 5(2)Adoepo3 304 (9.9,5.0) 0.90-1.20 0.07 nd 0.05 nd 0.18 5(2)Ad.cor*3 304 (9.9,5.0) 1.20-1.50 0.10 0.07 nd 0.19 5(2)AeCc.p.3 304 (9.9,5.0) 1.50-1.80 0.05 nd 0.04 nd 0.19 5(2)Atpwj.a 304 (9.9,5.0) 1.80-2.10 nd 0.05 nd 0.05 nd 0.23 5(2)A&.,or3 304 (9.9,4.6) 0.30-0.60 1.14 nd 0.06 nd 0.25 5(2)Adepc..3 304 (9.9,4.6) 0.60-0.90 0.72 nd 0.07 nd 0.31 5(2)Adeepc3 317 (8.0,2.0) 0.45-0.60 nd 0.06 nd 0.06 nd 0.29 5(2)A4eepw*3 317 (8.0,2.0) 0.60-0.90 nd 0.04 nd 0.05 nd 0.20 5(2)A.pmar 317 (8.0,2.0) 0.90-1.20 nd 0.03 nd 0.04 nd 0.20 5(2)Apew.,3 317 (8.0,2.0) 120-1.50 nd 0.04 nd 0.06 nd 0.26 5(2)AfWep.-3 317 (8.0.2.0) 1.50-1.80 nd 0.04 nd 0.05 nd 021 5 2

( A&.poo3 317 (8.0,2.0) 1.80-2.10 nd 0.04 nd 0.05 nd 0.21 5(2)A&.pm"or 305 (4.0,2.0) 0.0O-0.30 0.67 1.45 nd 0.23 5(2)Aftwc"r 305 (4.02.0) 0.30-0.60 0.15 0.33 nd 0.21 5(2)Ad.cp=" 305 (4.0,2.0) 0.60-0.90 nd 0.08 nd 0.13 nd 0.19 5(2)Admp=94 305 (4.0,3.0) 0.60-0.90 nd 0.05 nd 0.10 nd 0.19 5(2)Aaepx,4 305 (4.0,3.0) 0.90-1.20 nd 0.05 nd 0.12 nd 0.16 5(2)A4poeen4 305 (4.0.3.0) 1.20-1.50 nd 0.07 nd 0.11 nd 0.17

- 5(2)Adep..4 305 (4.0,3.0) 1.50-1.80 nd 0.07 nd 0.10 nd 0.21 5(2)Acftxr.4 305 (8.0,0.0) 0.30-0.60 nd 0.08 -nd 0.11 nd 020 5(2)A4de po4 305 (8.0,0.0) 0.60-0.90 nd 0.08 nd 0.13 nd 024 5(2)Ae.p...4 305 (8.0,1.0) 0.30-0.60 0.33 0.20 nd 0.16 5(2)&wepco 305 (8.0,1.0) 0.60-0.90 0.11 nd 0.13 nd 0.17 5(2)Adasep.4 305 (9.0.0.0) 0.00-0.30 0.41 0.18 nd 0.18 5(2)Acn 305 (9.0,0.0) 0.30-0.60 nd 0.12 nd 0.10 nd 0.19 5(2)Afie. 1 4 305 (9.0,0.0) 0.60-0.90 nd 0.08 nd 0.07 rid 0.16 5(2)Adep=,M 305 (9.0,1.0) 0.30-0.60 nd 0.09 nd 0.13 nd 0.15 5(2)AdeX.,4 328 (9.0,1.0) 0.30-0.60 0.11 nd 0.12 nd 0.16 5(2)Ad~ep.4 328 (9.0,2.0) 0.00-0.30 0.15 nd 0.13 nd 0.23 5(2)A4sepxn4 328 (9.0,2.0) 0.30-0.60 nd 0.08 nd 0.13 nd 0.20 5(2)Adepxn4 328 (9.0,2.0) 0.60-0.90 0.10 nd 0.11 nd 024 5(2)Adgp.s5 304 (2.9.2.9) 0.15-0.30 nd 0.05 nd 0.06 nd 0.25 5(2)Aipco.5 304 (2.9,2.9) 0.30-0.60 nd 0.04 nd 0.05 nid 0.30 5(2)Aftp=o, 304 (2.9.2.9) 0.60-0.75 nd 0.05 nd 0.07 nd 0.29

'nd indicates non detect, MDA provided b No entry in MDA columns is provided when residual radioactivity is detected 2-129

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 6 Description Survey Unit 6 is an area of approximately 1500 m2 in size that occupies the south-central section of the Protected Area. This area encompasses the New Access Control Building and the former location of the site electrical substation. Subsurface structures and equipment include the Liquid Radwaste Processing discharge line, storm drains, Well Water System piping electrical conduit, and Fire Protection System piping.

History The HSA has identified this survey unit to potentially contain radioactive contamination in area soils. This area was once the transport route for movement of radioactive waste to the Radwaste Building for temporary storage and shipment preparation.

Radiological Status Residual radioactivity was identified in this survey unit at a fraction of the IDCGL (0.2 pCi/g Co-60). Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified in deep-core sampling analyses. The radiological status of this survey unit is Class 1 based on proximity to the following:

• Contaminated material transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Co-60 Mean value (pCig) 0.16 0.056 Standard deviation (a) 0.048 0.020 Applying the Unity Rule, J \2 2 2 2

+ ( cCC .f

/f.048 .

+1020

-15.lcs) t. 4 9 9 Co) 5 1 1.Cs) Y49CoJ a 0.010 For the Unity Rule the DCGL for the weighted sum is 1.0. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR 1- 0.5 a 0.01 2-130

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, CharacterIzation Survey Results With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid patter with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 40 X 50 meters Random Numbers 0.00, 0.76 X = (0.00)(40 m) = 0.0 m Y = (0.76)(50 m) = 38.0 m Sample Spacing L = 4;5 = ^1'5°= = 10.3 meters As a conservative measure, 18 samples were collected by random start coordinate location and 9.2 meter spacing.

Supportina Surveys Supporting survey 6A 2 was conducted to provide further investigation of potential soil contamination prior to construction of the ISFSI road. Deep core sampling was conducted in two survey efforts to investigate the extent of subsurface contamination. The maximum sample depth was approximately 2.7 meters. Sample point locations were judgmentally selected based on historical data, process knowledge, and location availability due to subsurface obstruction.

Data Summary Survey Unit 6 Survey Data Points Radionuclide* Mean Max. Value 6A1 18 CS137 0.09 0.20

___ ______ ___ __ 0.08 0.16 6A2 4 CS1 37 0.09 0.09 6A___p= 5 nd -

6AdW=p2 2 nd nd denotes no activity detected Co-60 detected in 3 samples only 2-131

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 6 Z+g I Meters Legend

- Survey Unit 6 Numbered Local Coordinate Grid m Buildings

• Soil Sample Locations Big Rock Point Iwmacted Area North LU.w hE adet Nes r

PR Wad Ns_

L -0%

2-132

BRP LICENSE TERMINATION PLAN Revision 0 4/1/2003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results CS-1137 Co-60 Arn-241 Survey Grid Coordinate Depth (Cs 3 CA (x,y) (i) Activity MDA Activity MDA Activity MDA I

340 (9.2,8.0) 0.00-0.15 nd 0.04 nd 0.04 nd 0.18 6A, 0.20 6Ai 341 (8.4.8.0) 0.00-0.15 nd 0.04 nd 0.04 nd 342 (7.6,8.0) 0.00-0.15 nd 0.05 nd 0.05 nd 0.20 6Mi 352 (0.0,8.8) 0.00-0.15 0.17 0.04 nd 0.24 6A, (9.2,8.8) 0.00-0.15 0.04 nd 0.03 nd 0.19 BA1 352 353 (8.4,8.8) 0.00-0.15 nd 0.03 nd 0.05 nd 0.16 6k, 0.20 354 (7.6,8.8) 0.00-0.15 0.06 nd 0.04 nd 6A, 364 (0.0.9.6) 0.00-0.15 0.07 0.05 nd 0.24 MAi 364 (9.2,9.6) 0.00-0.15 0.20 0.16 nd 0.27 6A, (8.0,9.6) 0.00-0.15 0.03 nd 0.05 nd 0.19 6k, 365 366 (7.6,9.6) 0.00-0.15 0.08 nd 0.04 nd 0.24 6A, (6.8,9.6) 0.00-0.15 0.11 nd 0.05 nd 0.22 6A, 367 (0.0,0.4) 0.00-0.15 0.13 nd 0.05 nd 0.19 BA1 364 6A, 364 (9.2,0.4) 0.00-0.15 0.12 nd 0.06 nd 0.23 365 (8.4,0.4) 0.00-0.15 0.03 nd 0.05 nd 0.20 MAi 6k, 366 (7.6,0.4) 0.00-0.15 nd 0.04 nd 0.03 nd 0.19 6Ai 367 (6.8,0.4) 0.00-0.15 nd 0.04 nd 0.04 nd 0.20 6Ak 340 (9.2,8.0) 0.15-0.30 nd 0.03 nd 0.03 nd 0.18 352 (2.9,2.9) 0.00-0.15 nd 0.05 nd 0.04 nd 0.30 6A2 352 (8.6,8.6) 0.00-0.15 nd 0.05 nd 0.07 nd 0.24 6A2 0.23 6A2 340 (2.9,2.9) 0.00-0.15 nd 0.05 nd 0.05 nd 6A2 340 (8.6,8.6) 0.00-0.15 0.09 nd 0.06 nd 0.26 6Ad9e=amr 355 (6.0.8.0) O.O-OA5 . _

(6.0,8.0) 0.45-1.70 nd 0.06 nd 0.11 nd 0.19

__d_____ 355 6Md 343 (1.0.8.0) 0.00-0.60 F_

______o__ 343 (1.0,8.0) 0.60-1.20 nd 0.06 nd 0.07 nd 0 15 6Adeemmi 343 (1.0,8.0) 120-1.80 nd 0.07 nd 0.07 nd 0.17 6Aftyxoi 343 (1.0,8.0) 1.80-2.40 nd 0.05 nd 0.07 nd 0.16 343 (1.0.8.0) 2.40-2.70 nd 0.05 nd 0.07 nd 0.16 6ce9qpori Mft*poa 341 (8A,8.0) 0.60-0.90 nd 0.04 nd 0.05 rnd 0.24 6A~wp.-.2 341 (8A,8.0) 0.90-1.05l nd 0.07 nd 0.07 rnd 0.33

• idindicates non detect, MDA provided b No entry In MDA columns Is provided when residual radioactivity Is detected 0 Sample was not obtained for analysis (surface gravel).

2-133

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 7 Description Survey Unit 7 is an area of approximately 2200 m2 that occupies the southeast section of the Protected Area. This area contains a portion of the New Access Control Building and the former site electrical substation. Subsurface structures and equipment include the Liquid Radwaste Processing discharge line, storm drains, well water piping, electrical conduit, and Fire Protection System piping.

History The HSA has identified this survey unit to potentially contain radioactive contamination in area soils. This area is adjacent to the transport route for movement of radioactive waste to the Radwaste Building. This area is also a connecting pathway for the transport of radioactive materials to the Protected Area main gate.

Radiological Status Residual radioactivity was not Identified above background levels in any survey performed in this area. Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified in deep-core sampling analyses. The radiological status of this survey unit is Class 1 based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination scheduled for excavation and subsurface component removal,

• Locations scheduled for soil remediation, and

• Buildings and foundations scheduled for demolition and removal of contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Mean value (pCVg) 0.21 Standard deviation (a) 0.23 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift =DCGL-LBGR - 5.11-2.5 =

a 0.23 With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern With the southwest comer of the survey unit as origin.

2-134

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Bounding survey unit dimensions 60 X 60 meters Random Numbers 0.467, 0.76 X = (0.467)(60 m) = 28.0 m Y = (0.575)(60 m) = 34.5 m Sample Spacing L = JWYN = 406'14 = 12.5 meters As a conservative measure, 15 samples were collected by random start coordinate location and 10.5 meter spacing.

SuDrorting Surveys One deep core survey was conducted investigate the potential presence of subsurface contamination. The maximum sample depth was approximately 2.25 meters. Sample point locations were judgmentally selected to identify potential areas of contamination using historical information, process knowledge, and location availability based on subsurface obstructions.

Data Summarv Survey Unit 7 Mean Max. Value Survey No. of Samples Radionuclides* ((Ci/g) l10) 7A 15 Cs137

• 0.10 0.20 Me7Adepml 6 nd -

• nd indicates non detect Radioactivity detected in 3 samples only 2-135

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 7 Legend

_ Survey Unit 7 Numbered Local Coordinate Grid LE Buildings

• Soil Sample Locations Big Rock Point 6 -o9 2-136

Revision 0 BRP LICENSE TERMINATION PLAN 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results

. _ 1 e_ A-&A 4 Coordinate Depth (pCi/g) (pCVg)

(pCUg)

Survey Grid 4 -3AttiVItV V MDA II *7E. II . .e a B (x,y) I (m) ___________

A ,.bAh, Aivt w 7_-

a Mfl&

unDt, Acthfitv -

MDJA-ACUVRV I ActIVny- I MUI' MUA-0.00-0.15 nd 0.04 nd 0.04 nd 0.18 333 (7.5,5.0) 0.00-0.15 nd 0.04 nd 0.05 nd 0.24 M7A 334 (8.0,5.0) nd 0.04 nd 0.05 nd 0.25 7AI 292 (8.5.5.0) 0.000.15 0.00-0.15 nd 0.04 nd 0.04 nd 0.17 7AI 345 (7.5.4.5) nd 0.04 nd 0.04 nd 0.21 7A, 346 (8.0.4.5) 0.00-0.15 nd 0.04 nd 0.04 nd 0.18 7A, 293 (8.5,4.5) 0.00-0.15 nd 0.05 nd 0.05 nd 0.21 7A, 525 (9.0,4.5) 0.00-0.15 nd 0.04 nd 0.05 nd 0.24 7A1 357 (7.5.4.0) 0.00-0.15 nd 0.04 nd 0.05 nd 0.20 7A1 358 (8.0,4.0) 0.00-0.15 nd 0.03 nd 0.04 nd 0.21 7A1 294 (8.5.4.0) 0.00-0.15 0.00-0.15 0.20 nd 0.05 nd 0.27 7A1 535 (9.0,4.0) 0.06 nd 0.05 nd 0.20 7A1 368 (7.0,3.5) 0.00-0.15 nd 0.04 nd 0.04 nd 0.20 7A1 369 (7.5,3.5) 0.00-0.15 nd 0.03 nd 0.03 nd 0.16 7A, 370 (8.5,3.5) 00-0.15 OD00-0.15 0.04 nd 0.04 nd 0.20 7A, 25 (8.5.35) nd 0.O6 nd nd 0.19 515 7A Auij321 (8.0,2.0) 0.00-0.60 n oM I

__ , ,^ ^e ^S n ln 4 <> n u%unA llU v .vg . . ._

7A i dwco1 321 1 (UMzu) U.IQUI.- - IOU r

IIU ...

4 7A dzpl 0.00-0.45 1 .______

344 (2.0,5.0) nId 0.20 nfd 0.03 I

7A. deep01 344 (2.0,5.0) 0.45-1.05 I nud 0.07 1.05-2.70 nd 0.07 rnd 0.11 I nd 0.24 dseL 344 (2.0o5.0) 7A j

^^n 5

ltJ u,n%a u}

OU n nn-n An u uu-v _ 0cl nd 0.06 1 nd 0.10 nd 0.19 7A 1. 368 1(308.0) 10.40-1.601 nd ne1 0.06 j nd 0.08 nd j0.16 7AI 368 308.0) , 1.60-225

• nd Indicates non detect, MDA provided b No entry In MDA columns Is provided when residual radioactivity is detected e Sample was not obtained for analysis (surface gravel).

2-137

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 8 DescriDtion Survey Unit 8 is approximately 2800 m2 in size and encompasses the area beneath the Turbine Building and Containment Building. The concrete base pad supporting the Containment Building extends over 10 meters below grade.

Subsurface structures and equipment in these areas are extensive. During plant operation these buildings were housed all components and interconnecting systems necessary for power generation. A significant amount of subsurface piping and electrical conduit continues to support systems that currently remain in operation.

History The eastern section of the Turbine Building (also known as the Service Building Annex) was utilized for office space and has always been maintained as a non-radiological area. The HSA has identified residual radioactivity at two locations in soils beneath the Turbine Building floor

1. Pipe Tunnel - resulting from the migration of contaminants through concrete expansion joints in the floor, and

2. Track Alley - originating from a former subsurface condensate piping leak.

The Pipe Tunnel expansion joints were sealed and the flooring surface in this area has been reinforced to support the removal of heavy equipment and materials from the Containment Building prior to demolition. Remediation efforts were conducted in 1984 after discovery of a condensate piping leak in Track Alley. Following the removal of contaminated soil, clean fill was used to return the remediated area to proper grade.

Radiological Status

• Residual radioactivity was not identified in soil samples collected beneath the Containment Building above established background levels.

• Surveys conducted in the Turbine Building identified residual radioactivity at IDCGL values in the western portion of Track Alley. Soil analyses in this area verify the results of remediation efforts identified in historical documentation.

• Residual Radioactivity was not Identified in the eastern section of the Turbine Building above established background levels.

• Analyses of soil sampled collected beneath the Pipe Tunnel floor yielded residual radioactivity (Co-60) above the IDCGL. The Pipe Tunnel is a segregated section in the northern area of the Turbine Building that annexes the Containment Building.

A significant amount of excavation will be required for the removal of subsurface structures and components in Survey Unit 8. Characterization surveys are scheduled to continue during this process and remediation efforts will be conducted as necessary to satisfy the requirements for final status survey. It is expected that this survey unit will be subdivided into smaller areas for evaluation at the time of the Final Status Survey. The radiological status of Survey Unit 8 is Class 1.

2-138

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Primary Survey Design Fire Protection System, Liquid Radwaste Processing System, and other systems supporting continued operation of the Spent Fuel Pool remain in service at this time. As a result, sampling in this area was restricted due to potential breach of operational systems, embedded piping, or electrical power by the boring process required for sample collection. In addition, ongoing decommissioning activities in these areas limit the extent of available sample point locations. A primary survey design based on a systematic sampling approach and the statistical requirements of the Sign Test were not possible in this survey unit.

Sample points were selected at locations of greatest probability to identify radioactivity and define the lateral and vertical extent of potential contaminant migration. Sample size was determined by location availability. The data point selection process was based on documented historical events, process knowledge, and identified contaminant migration pathways defined by hydrogeological evaluation. Samples were collected by mechanically boring through structural steel and concrete and then coring the soil below with specialized sampling equipment. This process has resulted In the collection of 114 samples in four area survey iterations.

Data Summarv Survey Unit 8 Survey No. of Samples Radionuclides* Mean (cg Max.

PVQValue Aopcri1 4 nd Turbine Bldg. 14 __

_ Cs137 1.27 12.60 Pipe Tunnel 33 Co60 4.84 105.90 Mn4** 1.77 8.68 8ADftp3 58 Cs137 1.22 5.29 Turbine Bldg. Co60 0.15 0.17 8Aec maple4ynd Containmentece -

nd indicates non detect Radioactivity detected in one sample only 2-139

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 8 Legend "uk F.P1i5 1 Meters P SM rvy Unit a Numbered Local Coordinate Grid E 8utdingastrtutures

• SoilSampletLocabons Big Rock PohIt Inwaectd Ante North 2-140

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results eCoordinate Depth Cs-137 Co-60 I Mn-4 Am-241 Sur(ey(Grid (Coordin) te (p i l D (pCI)

(x.y) (m) Activity*a I MDA b IActivity aI MDA b I Actdvity*l1I DA b Activity

• l MDA b Pipe T unnel : - - - - . . . - ' - __ -  :  : - ' ' _____--. _. _s 8 depcm 2 250 (5.5.2.5) 0.00-0.30 nd 0.05 0.08 nd 0.06 nd 0.26 8 dwp 2 250 (5.5,2.5) 0.30-0.60 nd 0.05 0.10 nd 0.06 nd 0.29 8 dwp 2 250 (5.5,2.5) 0.60-0.90 nd 0.05 ' nd 0.08 nd 0.07 nd 0.23 8 dwpcc 2 250 (9.5,4.0) 0.00-0.30 4.07 105.90 8.68 nd 0.63 8deep 2 250 (9.5.4.0) 0.30-0.60 0.60 15.50 0.92 nd 0.43 8 dewcm 2 250 (9.5,4.0) 0.68-0.90 0.05 0.19 0.03 nd 0.30 8 de=p*2 269 (2.0.8.0) 0.00-0.30 0.08 0.32 nd 0.07 nd 0.29 8 deepccm2 269 (2.0,8.0) 0.30-0.60 0.05 0.44 nd 0.07 nd 0.25 8 depm 2 269 (2.0,8.0) 0.60-0.90 0.39 3.19 0.17 nd 0.40 8 deepcors 2 269 (2.0,8.0) 0.90-1.20 0.10 0.82 nd 0.07 nd 0.31 8deeper 2 269 (2.0,8.0) 1.20-1.50 0.06 0.25 nd 0.05 nd 0.27 8 d&epcc2 269 (2.0,8.0) 1.50-1.80 nd 0.05 0.17 nd 0.04 nd 0.27 8 deep=9 2 269 (2.0.8.0) 1.80-2.10 0.02 0.22 nd 0.06 nd 0.27 8 doezWo2 269 (4.5,7.5) 0.00-0.15 nd 0.06 0.59 nd 0.11 nd 0.32 8 deepcc 2 269 (4.5,7.5) 0.30-0.60 nd 0.05 0.28 nd 0.08 nd 0.28 8 deep=. 2 269 (4.5,7.5) 0.60-0.90 0.11 0.44 0.09 nd 0.34 8 dp=, 2 269 (4.5.7.5) 0.90-1.20 nd 0.08 0.23 nd 0.08 nd 0.29 8 deepoo 2 269 (4.5,7.5) 1.20-1.50 0.26 8.78 0.73 rnd 0.43 8 dopcom 2 269 (4.5,7.5) 1.50-1.80 nd 0.07 nd 0.1 nd 0.05 nd 0.32 8 deepw. 2 269 (4.5,7.5) 1.80-2.10 nd 0.06 0.09 nd 0.06 nd 0.25 8 deepcom 2 269 (4.5,7.5) 2.10-2.40 nd 0.04 0.09 nd 0.05 nd 0.22 8 depcom 2 269 (5.5,2.0) 0.00-0.15 nd 0.05 0.43 ind 0.07 nd 0.22 8 deep=, 2 269 (5.5,2.0) 0.30-0.60 nd 0.04 0.20 nd 0.07 nd 0.23 8 depw 2 269 (8.5.0.0) 0.00-0.15 nd 0.07 1.10 nd 0.10 nd 0.34 8 deep=e2 269 (8.5.0.0) 0.30-0.60 nd 0.05 0.26 nd 0.07 nd 0.24 8 deepcms 2 270 (0.5,4.5) 0.00-0.15 0.10 1.34 nd 0.12 nd 0.34 8 depoo 2 270 (0.5,4.5) 0.30-0.60 0.06 0.62 nd 0.10 nd 028 8 deepccr2 270 (0.5,8.5) 0.00-0.15 nd 0.05 0.33 nd 0.08 nd 0.24 8 deep=* 2 270 (0.5,8.5) 0.30-0.60 nd 0.05 0.24 nd 0.07 nd 0.26 8dsp 2 307 (3.0,8.5) 0.00-0.15 0.54 0.29 nd 0.08 rnd 0.28 8 deepcw2 307 (3.3.8.5) 0.00-0.15 12.60 2.10 nd 0.07 nd 0.43 8 deep=* 2 307 (5.0,7.0) 0.00-0.15 nd 0.04 0.52 nd 0.08 nd 0.28 8 depc2 307 (5.0,7.0) 0.30-0.60 nd 0.06 nd 0.12 nd 0.06 nd 0.33

- no indicates non detect, MDA providea bNo entry in the MDA column is provided when residual radioactivity is detected C Datapoint locations are further defined In Individual survey file drawings and floor plans 2-141

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2,Site Characterization 41112003 Appendix 2-E, Characterization Survey Results I 1 Cs-137 I CO-60 (PCU)

I Mn-54 (PCi/g)

I Am-241 (PCU/g)

Survey Grid Coordinate DePth (pCIg)

(m) ACivity MDAb Actvlty' MDAb ACtitys MDAb ACtivitY" MDAb FTiblnelservci e Bi uilding  ; .. - ___ - .__ - _ ____.

(6.0,8.0) 0.00-0.30 nd 0.09 nd 0.13 nd 0.07 nd 0.24 8 dW= 1 306 306 (6.0,2.0) 0.00-0.60 nd 0.10 nd 0.06 nd 0.14 nd 0.38 8 deepem 1 319 (1.0,5.5) 0.00-0.60 nd 0.06 nd 0.1 nd 0.02 nd 0.19 8 d8WWM 1 (1-0,5.5) 0.60-220 nd 0.06 nd 0.09 nd 0.05 nd 0.16 8 d..$¶1 319 8 (1.0,5.5) 2.20-3.10 nd 0.07 nd 0.07 nd 0.06 nd 0.15 4SdwX1 319 319 (1.0,5.5) 3.10-3.70 nd 0.06 nd 0.09 nd 0.05 nd 0.19 8deeP*S1 (5.0,4.5) 0.0O-0.90 nd 0.08 nd 0.10 nd 0.09 nd 0.20 8 ePX 1 308 (5.0,4.5) 0.90-2.13 nd 0.05 nd 0.08 nd 0.06 nd 0.15 8 depoPX1 308 (5.0,4.5) 2.13-2.75 nd 0.05 nd 0.04 nd 0.04 nd 0.26 8 d#p=* 1 308 308 (5.0,4-.5) 2.75-3.30 nd 0.04 nd 0.05 nd 0.03 nd 0.29 8 deeop"1 270 (8.5,6.5) 0.00-0.80 nd 0.10 nd 0.11 nd 0.08 nd 0.21 8 deoeP1 270 (8.5,6.5) 0.80-2.75 nd 0.05 nd 0.11 rnd 0.07 nd 0.18 8 deep=*1 (8.5,6.5) 2.75-3.50 nd 0.05 nd 0.08 nd 0.05 nd 0.18 8 doePMs 1 270 (6.0,5.0) 0.00-0.30 nd 0.17 nd 0.21 nd 0.14 nd 0.37 8 dee4pe 1 306 (5.0,8.5) O.00-.30 0.86 nd 0.06 nd 0.04 nd 0.26 8 ePM 3 318 (5.0.8.5) 0.30-0.60 3.05 0.17 nd 0.05 nd 0.36 8 dseep=re 318 318 (4.5,6.0) 0.00-0.30 nd 0.04 nd 0.05 nd 0.04 nd 0.26 8 dmepme 3 (4.5,6.0) 0.30-0.60 0.07 nd 0.06 nd 0.04 nd 0.28 8 deepr#3 318 (4.5,6.0) 0.60-0.90 4.77 nd 0.09 nd 0.06 nd 0.43 8 .pW, 3 318 (4.5,6.0) 0.90-120 2.10 nd 0.05 nd 0.04 nd 0.32 8 deepcme3 318 -

(4.0,6.5) 0.00-0.30 nd 0.04 nd 0.07 nd 0.04 nd 0.23 8 doiwr 3 318 (4.0,6.5) 0.30-0.60 0.05 nd 0.05 nd 0.04 nd 0.26 8 deecm 3 318 (4.0,6.5) 0.60-0.90 4.58 nd 0.07 nd 0.03 nd 0.38 8 dep.e3 318 (4.0,6.5) 0.90-1.20 2.25 0.13 nd 0.05 nd 0.37 8 diepcr 3 318 (4.0,6.5) 1.20-1.40 0.84 nd 0.07 nd 0.04 nd 0.31 8 deXpme 3 318 (4.0,4.5) 0.00-0.30 nd 0.04 nd 0.06 nd 0.03 nd 0.25 8 deepme 3 318 (4.0,4.5) 0.30-0.60 nd 0.05 nd 0.05 nd 0.04 nd 0.27 8 deoPcam 3 318 (4.0,4.5) 0.60-0.90 5.29 nd 0.04 nd 0.05 nd 0.37 8 doeNP3 318 (4.0,4.5) 0.90-1.20 1.00 nd 0.06 nd 0.05 nd 028 8 deweo3 318 318 (4.0,4.5) 1.20-1.50 0.60 nd 0.08 nd 0.04 nd 0.29 8 dpm3J (4.0,4.5) 1.50-1.80 0.15 nd 0.06 nd 0.04 nd 0.23 Bdeep=ae3 318 3 318 (4.0,4.5) 1.80-2.10 nd 0.04 nd 0.04 nd 0.03 nd 0.23 8 *"c 318 (8.0,6.0) 0.00-0.30 0.04 nd 0.05 nd 0.03 nd 0.20 8 dnpme 3 318 (8.0,6.0) 0.30-0.60 nd 0.03 nd 0.06 nd 0.02 nd 0.30 8 de3or 3 8 depcor 3 318 (8.0,6.0) 0.60-0.90 nd 0.05 nd 0.06 nd 0.04 nd 0.30 318 (8.0,6.0) 0.90-1.20 nd 0.05 nd 0.06 nd 0.03 nd 0.23 8 depcum3 8 dwpn 3 318 (8.0,6.0) 1.20-1.50 nd 0.05 nd 0.06 nd 0.04 nd 0.26 318 (8.0,6.0) 1.50-1.80 nd 0.04 nd 0.05 nd 0.03 nid 0.25 8 dopoome3 8 deep=* 3 318 (8.0,9.5) 0.00-0.30 nd 0.04 rd nd 0.04 nd 027

• rnd indicates non detect, MDA provided b No entry In the MDA column Is provided when residual radioactivity is detected cDatapoint locations are further defined In Individual survey file drawings and floor plans 2-142

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Cs-137 Co- Mn-64 Am-241 Survey Grd Coordinate Depth (m)

(pCVg)

Activity j

MDAb Activfty (pCVg)

MDAb (pClg)

Activity MDAb (pCISg)

Activity MDAb TuiblinelServl1e Buding(nt)___________

318 (8.0,9.5) 0.30-0.60 nd 0.04 nd 0.05 nd 0.04 nd 0.25 8 deejxs 3 8 deep=s 3 318 (8.0,9.5) 0.60-0.90 0.10 - nd 0.05 nd 0.05 nd 0.24 318 (8.0,9.5) 0.90-120 0.10 nd 0.06 nd 0.04 nd 0.26 8 depem 3 -

318 (8.0.9.5) 1.20-1.50 nd 0.05 nd 0.06 nd 0.04 nd 0.26 8 eepocrea 318 (8.0,9.5) 1.50-1.80 nd 0.04 nd 0.06 nd 0.04 nd 025 8 d;pco 3 318 (8.0,9.5) 1.80-2.10 nd 0.04 nd 0.05 nid 0.03 nd 025 8 dep=e 3 306 (4.5,1.5) 0.00-0.30 0.04 nd 0.06 nd 0.04 nd 0.27 8 deV=e 3 -

306 (4.5,1.5) 0.30-0.60 nd 0.06 nd 0.08 nd 0.05 nd 0.34 8 deop* 3 318 (4.5.9.5) 0.00-0.30 nd 0.04 nd 0.05 nd 0.05 nd 0.26 8 deepm 3 318 (4.5,9.5) 0.30-0.60 nd 0.05 nd 0.06 nd 0.04 nd 0.28 8 depcr 3 8 deepclo3 306 (4.0,4.0) O.O0-0.30 0.14 - nd 0.09 nd 0.05 nd 028 8 deepcm3 306 (4.0,4.0) 0.30-0.60 0.06 - nd 0.06 nd 0.04 nd 027 8drepcae 3 306 (4.0,4.0) 0.60-0.90 1.16 nd 0.05 nd 0.04 nd 0.26 8 deep=m 3 306 (4.0,4.0) 0.90-120 0.55 - nd 0.07 nd 0.04 nd 0.23 8 deepom 3 306 (4.0,4.0) 1.20-1.50 0.19 - nd 0.05 nd 0.03 nd 0.25 8 deep= 3 306 (4.0,4.0) 1.50-1.80 0.06 - nd 0.06 nd 0.04 nd 0.24 8 depw" 3 306 (4.5,8.5) 0.00-0.30 0.04 - nd 0.08 nd 0.05 nd 0.31 306 (4.5.8.5) 0.30-0.60 nd 0.04 nd 0.06 nd 0.05 nd 027 8 dCw=63 306 (4.5,8.5) 0.60-0.90 nd 0.05 nd 0.06 nd 0.04 nd 0.23 8 deep=, 3 306 (5.0,8.0) 0.00-0.30 nd 0.06 nd 0.06 nd 0.05 nd 0.28 8 deepcs 3 306 (5.0,8.0) 0.30-.60 nd 0.05 nd 0.06 nd 0.04 nd 0.26 8 dwpae 3 8Odpar 3 306 (5.0,8.0) 0.60-0.90 nd 0.05 nd 0.05 nd 0.03 nd 0.28 268 (6.5,2.5) 0.00-0.30 nd 0.05 nd 0.06 nd 0.04 nd 0.26 8 deepcor 3 268 (6.5,2.5) 0.30-0.60 nd 0.06 nd 0.05 nd 0.04 nd 026 8 depoorm 3 8 deopcr 3 268 (6.5.2.5) 0.60-0.90 nd 0.04 nd 0.07 nd 0.04 nd 0.26 8 dep cc 3 268 (6.5,2.5) 0.901.20 nd 0.06 nd 0.06 nd 0.04 nd 0.26 8 deopa3 268 (6.5,2.5) 1.20-1.50 nd 0.05 nd 0.06 nd 0.04 nd 0.22 8 dee= 3 268 (6.5,2.5) 1.50-1.80 nd 0.04 nd 0.09 nd 0.04 nd 0.24 8 deep=a 3 268 (6.5,2.5) 1.80-2.10 nd 0.04 nd 0.09 nd 0.05 nd 0.30 8 deep=* 3 268 (6.5,2.5) 2.10-2A.0 nd 0.04 nd 0.06 nd 0.04 nd 027 268 (5.0,2.5) 0.00-0.30 nd 0.04 nd 0.06 nd 0.03 nd 023 8dMp 3 8 deepeor 3 268 (5.0,2.5) 0.30-0.60 nd 0.04 nd 0.06 nd 0.03 nd 0.25 268 (5.0,2.5) 0.60-0.90 nd 0.05 . nd 0.06 nd 0.04 nd 0.24 8 deepc- 3

' ididicates non detect, MDA provided bNo entry Inthe MDA column Is provided when residual radioactivity is detected CDatapoint locations are further defined in individual survey file drawings and floor plans 2-143

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Containment - ;i :

-::-:_ e . -: - --

8 deep=. 4 193 (5.8.1.5) 0.00-0.15 nd 0.05 nd 0.08 nd 0.05 nd 0.29 8 ftebpca4 193 (5.8,1.5) 0.15-0.30 nd 0.03 nd 0.06 nd 0.03 nd 0.23 8 deepor 4 193 (5.8,1.5) 0.30-0.45 nd 0.03 nd 0.05 nd 0.03 nd 0.22 8 deopsr 4 211 (2.7.5.0) 0.00-0.15 nd 0.06 nd 0.08 nd 0.06 nd 0.37 8 deepccr4 211 (2.7,5.0) 0.15-0.30 nd 0.05 nd 0.07 nd 0.05 nd 0.29 8 dCepxn 4 213 (3.2,2.2) 0.00-0.15 nd 0.04 nd 0.08 nd 0.04 nd 0.27 8 deepx*4 214 (2.5,1.3) 0.00-0.15 nd 0.05 nd 0.08 nd 0.04 nd 0.30 8 deeMxOO 4 214 (2.5.1.3) 0.15-0.30 nd 0.04 nd 0.06 nd 0.04 nd 0.24 8 dep=o 4 214 (2.5.1.3) 0.30-0.45 nd 0.05 nd 0.07 nd 0.05 nd 0.25

- no indicates non detect, MDA provided b No entry Inthe MDA column Isprovided when residual radioactivity Isdetected CDatapoint locations are further defined In Individual survey file drawings and floor plans 2-144

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 9 DescriDtion Survey Unit 9 is an area of approximately 2900 m2 that occupies the northeast section of the Protected Area. This area encompasses the Screenhouse (lake water inlet), Service Water System piping, and Fire Protection System piping. Other subsurface structures and equipment include the following:

• Diesel storage tanks (2)southeast of the Screen House,

• Diesel storage tank north of the Turbine Building ),

• Septic tanks along the southeast boundary of the survey unit,

• Liquid radwaste release piping,

• Transformer station and associated underground power conduit located in survey grid 234, and

• Electrical power and instrumentation conduit, Condenser Cooling Water, Service Water, Well Water and Fire Protection, Compressed Air system piping, and storm drains.

History The HSA has identified this survey unit to potentially contain residual radioactivity in area soils.

A materials transport route to the main gate traverses this survey unit from north to south. The liquid radwaste discharge line for radioactive effluent is located below grade in this area.

Radiological Status Residual radioactivity was not identified above background values trace values (0.33 pCVg) in any survey performed in this area. Subsurface soil contamination is not indicated by the HSA or process knowledge and was not identified by characterization analyses. The radiological status of Survey Unit 9 is Class 1 based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination,

• Buildings containing contaminated equipment and materials.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide Identification Cs-1 37 Mean value (pCVg) 0.43 Standard deviation (v) 0.00 Scoping survey analyses resulted in identical concentration values for Cs-137. An estimated standard deviation value of 0.43 is conservatively assumed for relative shift calculation. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift= DCGL - LBGR _ 5.11- 2.5 = 6.1 a 0.43 2-145

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

The approximate bounding dimensions of survey unit 9 are 40 x 60 meters Random Numbers 0.52, 0.62 X = (0.52)(40 m) = 20.8 m Y = (0.62)(60 m) = 37.2 m Sample Spacing L = = 290014 = 14.3 meter spacing As a conservative measure 22 samples were collected using 11.8 meter spacing. For data points falling outside the survey unit or where obstructions prohibited sample collection, alternate sample locations were identified by the random selection process described above.

Supporting Surveys One deep-core survey was conducted to investigate the potential presence of subsurface contamination. The maximum sample depth was approximately 2.25 meters. Sample point locations were judgmentally selected using historical documentation, process knowledge, and location availability based on subsurface obstructions.

Data Summary Survey Unit 9 Survey No. of Samples Radionuclides Mean Max. Value Cs137 0.19 0.33 GA, 22 Co60 0.04 0.04 Cs 1 37 0.09 0.14 19 Co60 nd nd Indicates no activity detected

• • Activity detected Inone sample only 2-146

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 9 Legend

[=]

Survey Unit 9 auiirngs Numbtred Lical Coodlnate Gid

• Soil Sample Locaions sale il I i I Ii i I t 819 Rock Point L"d Akfldo An_

- unLidw As 6 _//

2-147

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-137 Co-60 Am-241 (xY) (m) Activity MDAb Activity M)DA b Activitya MDAb GA1 61 (7.2.1.8) 0.00-0.15 0.09 nd 0.10 nd 0.35 9A1 62 (.0,1.8) 0.00-0.15 0.08 nd 0.04 nd 0.22 gA1 64 (0.8,1.8) 0.00-0.15 0.26 nd 0.12 nd 0.31 gAi 156 (7.2,9.0) 0.00-0.15 nd 0.08 nd 0.08 nd 0.40 9A1 157 (9-0,9-0) 0.00-0.15 nd 0.03 nd 0.04 nd 0.21 9A1 159 (0.8,9.0) 0.00-0.15 nd 0.09 nd 0.09 nd 0.42 OA, 160 (5.0.8.0) 0.00-0.15 0.20 _ nd 0.06 nd 024 OA 1 161 (4.4,9.0) 0.00-0.15 0.17 nd 0.05 nd 0.25 gA1 175 (7.2.7.2) 0.00-0.15 0.29 nd 0.07 nd 0.25 gA1 176 (9.0,72) 0.00-0.15 0.23 nd 0.06 nd 0.26 gA1 178 (0.8,7.2) 0.00-0.15 nd 0.10 nd 0.08 nd 0.37 GA1 179 (2.6,72) 0.00-0.15 0.07 nd 0.04 nd 0.22 gA1 180 (4A.,72) 0.00-0.15 0.14 nd 0.04 nd 0.27 GA1 195 (9.0,5.4) 0.00-0.15 0.24 nd 0.06 nd 0.26 OA, 197 (0.8.5.4) 0.00-0.15 nd 0.10 nd 0.08 nd 0.42 GA, 198 (2.6,5.4) 0.00-0.15 0.13 0.04 nd 0.29 GA1 214 (9.0,3.6) 0.00-0.15 0.33 nd 0.06 rnd 0.25 GA 1 *0 216 I (0.8,3.6) *I*

0.00-0.15 .9 0.22

.9 .9 nd .9 0.10 4 nd 0 0.40 QA. 217 (2.6.3.6) 0.00-0.15 0.25 nd 0.06 nd 0.26 GA1 233 (9.0,1.8) 0.00-0.15 0.25 nd 0.11 nd 0.36 SA1 235 (0.8.3.0) 0.00-0.15 0.24 nd 0.07 nd 0.42 GA 1 236 (2.6.1.8) 0.00-0.15 0.11 nd 0.11 nd 0.43

_A&9p=*1 137 (2.6,4.9) 0.00-0.60 0.03 nd 0.05 nd 0.21 gAdeepm1 137 (2.6,4.9) 0.60-1.20 nd 0.04 nd 0.05 nd 0.21 gAdeqorl 137 (2.6,4.9) 120-1.80 nd 0.05 nd 0.09 nd 0.36 9A9epcom1 137 (2.6,4.9) 1.80-2.40 nd 0.04 nd 0.11 nd 0.34 gAcaeepoe 137 (2.6,4.9) 2.40-3.00 nd 0.08 nd 0.11 rid 0.27 gAdeepcor 137 (2.6,4.9) 3.00-3.60 nd 0.08 nd 0.10 nd 0.43 9Adwepor1 175 (6.3,7.9) 0.00-0.60 0.14 nd 0.10 nd 0.41 QA&*p=, 175 (6.3,7.9) 0.60-120 nd 0.09 nd 0.11 nd 0.42 gAdeep=1 175 (6.3,7.9) 1.20-1.80 nd 0.08 nd 0.07 nd 0.26 GA&9pxs 175 (6.3,7.9) 1.80-2.40 nd 0.07 nd 0.08 nd 0.41

_Ae_=_ _ 175 (6.3,7.9) 2.40-3.00 nd 0.07 nd 0.09 nd 0.29 gAdeeo.1 175 (6.3.7.9) 3.00-3.60 nd 0.04 nd 0.05 nd 0.26 Ade.Por.1 175 (6.3,7.9) 3.60-4.10 nd 0.08 nd 0.13 nd 0.42 GAd1eP=. 215 (5.7,5.0) 0.00-0.60 c _

9Adeepr1 215 (5.7,5.0) 0.60-120 nd 0.07 rd 0.03 rd 034 Aep1'n-, 215 (5.7,5.0) 1.20-1.80 rd 0.08 rid 0.09 id 0.29 1^_---

^ A-^+^ &*NM ,;A nU carwe nuon ULUc, MIwA- plUVAMU

'do entry In the MDA column is provided when residual radioactivity Is detected

<.Seample was not obtained for analysis (surface gravel) 2-148

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Cs-137 Co-60 Am-241 Coordinate Depth

",r ~Surv-ey Grid (xy) (m)

(pC/g) (pCi/g) 19CQ (DCVQ) 1.

Actvity a I MDA t Activitya MDA a

.4 Activity'

,.4 I MDA'

____p__ _ 215 j (5.7.5.0) 1.80-2.40 nd 0.07 nd 0.10 nd 0.37

_A_ _m_ _ 215 (5.7.5.0) 2.40-3.00 nd 0.04 nd 0.06 0.24

_Aee_ _ 215 (5.7,5.0) 3.00-3.60 nd 0.06

-d 0.12 nd 0.44 gAdeepXi 215 (5.7,5.0) j3.811.2 [ d 0.02 nd 0.04 rid j 0.18

• nd indicates non detect, MDA provided b No entry inthe MDA column is provided when residual radioactivity is detected 2-149

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 10 Description Survey Unit 10 is a relatively small are of approximately 950 m2 immediately east of the Service Building. This survey unit is primarily paved open space that provides entry into the Protected Area. Subsurface structures and equipment include the following systems, piping, and conduit:

• Liquid Radwaste discharge,

• Electrical power and instrumentation, X Condenser Cooling Water,

• Service Water,

• Well Water,

• Fire Protection,

• Compressed Air, and

• Storm drains.

Historv The HSA has identified this survey unit to potentially contain residual radioactivity in area soils.

A materials transfer route to the main entry gate traverses this survey unit from north to south.

Radiological Status Residual radioactivity was not identified above background levels in any survey performed in this area. Subsurface residual radioactivity is not indicated by the HSA or process knowledge.

The radiological status of Survey Unit 10 is Class I based on proximity to the following area locations:

• Contaminated material transport pathways,

• Areas of known soil contamination, and

• Buildings containing contaminated equipment and materials Primary Survey Design

1. Sample Data Points Required A scoping survey was not conducted in this area. Based on physical characteristics, historical documentation and the process knowledge of land usage for this area, Survey Unit 10 Is identical to the adjoining survey units (7 and 9) within the Protected Area. The standard deviation for determination of relative shift was set at the highest value identified (0.43) in the surrounding area. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift= DCGL -LBGR = 5.11-2.5 =6.1 a 0.43 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

2-150

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results The approximate bounding dimensions of Survey Unit 10 are 20 x 40 meters Random Numbers 0.07, 0.97 X = (0.07)(20 m) = 1.4 m Y = (0.97)(40 m) = 38.8 m Sample Spacing L = ;M = 1 = 8.2 meter spacing As a conservative measure 21 samples were collected using 7.1 meter spacing.

Supporting Surveys No supporting surveys have been conducted to date.

Data Summary Survey Unit 10

• nd indicates non detect 2-151

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 10

+

0 5 10 20 L.nd SC I I I I II I I Meters surwY Unit 10 NUmberd Loan Coordbfle Ort

= rutinw a* Sd sampF Le tm tftokPrlrae Lfl fl L*

tO fl u -

~~

(-L_

2-152

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs- 137 Co-60 Arn-241 (xy) (i) Aiy * )DDAD MDA Activity Activity

• IMDA 10A1 252 (0.1,8.8) 0.00-0.15 nd 0.03 nd 0.04 nd 0.20 1A1 252 (7.2,8.8) 0.00-0.15 nd 0.03 nd 0.05 nd 0.19 10A1 253 (4.3,8.8) 0.00-0.15 nd 0.04 nd 0.04 nd 0.19 10A1 254 (1.4,8.8) 0.00-0.15 nd 0.04 nd 0.05 nd 0.19 10Ai 254 (8.5,8.8) 0.00-0.15 0.03 nd 0.04 nd 0.20 10Ai 255 (5.6,8.8) 0.00-0.15 0.30 nd 0.07 nd 0.22 10A1 254 (1.4,1.7) 0.00-0.15 0.36 nd 0.07 nd 0.26 10A1 254 (8.5,1.7) 0.00-0.15 nd 0.04 nd 0.05 nd 0.24 1bA 1 255 (5.6,1.7) 0.00-0.15 0.52 nd 0.08 nd 0.36 10A1 273 (1.4,4.6) 0.00-0.15 nd 0.04 nd 0.05 nd 0.17 10A1 273 (8.5,4.6) 0.00-0.15 nd 0.04 nd 0.04 nd 0.17 OA1 274 (5.6,4.6) 0.00-0.15 nd 0.06 nd 0.06 nd 0.38 1bA 1 290 (1.4,7.5) 0.00-0.15 nd 0.04 nd 0.04 nd 0.20 1vAi 290 (8.5,7.5) 0.00-0.15 nd 0.05 nd 0.05 nd 0.18 1bA, 495 (5.6,7.5) 0.00-0.15 0.06 nd 0.05 rid 0.22 1bA 1 290 (1.4,0.4) 0.00-0.15 nd 0.03 nd 0.05 nd 0.17 10A1 290 (8.5,0.4) 0.00-0.15 nd 0.04 nd 0.04 nd 0.22 IOA 1 495 (5.6,0.4) 0.00-0.15 nd 0.04 nd 0.05 nd 0.24 1bAI 291 (1.4,3.3) 0.00-0.15 nd 0.05 nd 0.05 nd 0.22

- --- -1 - -J1 I 1 A An4 dflA - -^,as 4 MR 5 33 OCXo015 - rN3 U.UD na vAw lWt v..uW I wrl I &.1 I I I v.vv-v.- ^ _.__ .. _--- n u, n:^^Ci n A (5fi63.3) I 0.0-.15 OU.OZ UAvD nau W. 1-I 4FA.

-1 I 5u5 .1

______ _ . a . . nv

-- ndidicates non detect, MDA provided b No entryIh the MDA column Is provided when residual radioactivity Is detected 2-153

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 11 DescriDtion Survey Unit 11 is an area of approximately 2350 m 2 located south of the Protected Area. This location encompasses the Radwaste Building and Mixed Low-Level Waste Storage Building.

Subsurface structures and equipment Include the following:

• Radwaste storage vaults, a Electrical power and fiber optic conduit,

• Drain piping, and

• Remote security camera and motion sensor relay communication.

History The HSA has identified this survey unit to potentially contain residual radioactivity in soil. This area was the temporary storage and staging location for all plant radioactive waste material prior to shipment to a licensed disposal facility. Contamination events have occurred in this area and extensive soil remediation efforts have been documented.

Radiological Status Residual radioactivity was identified at less than 1.0 pCilg in this survey area. The radiological status of Survey Unit 11 is Class 1 based on former building usage, proximity to material transport pathways, and the current radiological status of the solid radwaste vaults.

Primarv Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Co-60 Mean value (pCilg) 0.16 0.10 Standard deviation (a) 0.27 0.06 Applying the Unity Rule, 2

J l2 \2 2 0

(DCGLCS ) 0J+

CO )i DCGLCO -

0 27 5.1 1CCs J + 40.O6Co)2 9 9 Co) a =0.05 For the Unity Rule, the DCGL for the weighted sum is 1. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LGR 1-.5 =10 a 0-.05 2-154

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results With a and 0 error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample data point locations were selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 50 X 60 meters Random Numbers 0.186, 0.004 X = (0.186)(,50 m) =23.6 m Y = (0.004)(60 m) = 49.5 m Sample Spacing L = VT N = PT 14 = 12.9 meters As a conservative measure 25 samples were collected using 11 meter spacing.

SuDoortino Surveys Two deep-core surveys were conducted for the investigation of potential subsurface contamination. These surveys include samples collected through the concrete flooring in proximity the radwaste vaults and split spoon samples taken in open areas surrounding the Radwaste Building. The maximum sample depth was approximately 1.8 meters. Sample point locations were judgmentally selected based on historical documentation, process knowledge, and location availability where subsurface obstructions were not present.

Data Summary Survey Unit 11 Survey Sam osf Radionuclides Mean (pClIg) Max. Value (pCIg)l C370.17 0.40 1 125 -Co CA 0.48 0.64 11epAdre1 6 CSt 3y* 0.28 0.43 11p 33 Cs13 7 0.09 0.93

_ __ _ _ _ C o6* 0.19 0.24

• Radioactlvity Identified in2 samples only 2-155

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 11 0 5 10 20 Legend Scat,: I I I I I I I I I Moten S1rvey Unit 11 Numbebrd LoClI Coordinte Grid

= Buildcg

• Soil Sample Ltcations Impnw tct A eaNorlh JlgRock Point

.3/4 A1 L hg ,,nd hRq.vtedwn.a 2-156

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Surey Grd Coordinate Depth Cs-137 (pCIg) (pCUQ2)

(x,y) (i) Actvity a MDA b Activty

• UDA b Activitya MDAb 589 (9.3,0.3) 0.00-0.15 nd 0.04 nd 0.05 nd 0.19 1

I1Ai 594 (0.3,0.3) 0.00-0.15 nd 0.04 nd 0.04 nd 0.26 1A1 595 (1.3,0.3) 0.00-0.15 0.05 nd 0.06 nd 0.25 11A, 591 (2.3,0.3) 0.00-0.15 0.11 nd 0.09 nd 0.28 1 431 (2.3,1.3) 0.00-0.15 nd 0.06 nd 0.05 nd 0.23 1iA, 430 (1.3,1.3) 0.00-0.15 0.24 nd 0.05 nd 0.28 IlA, 429 (0.3,4.0) 0.00-0.15 0.17 nd 0.07 nd 0.24 11A, 427 (9.3,1.3) 0.00-0.15 nd 0.04 nd 0.04 nd 0.19 1A 462 (2.3,2.3) 0.00-0.15 0.18 nd 0.06 nd 0.28 1iA

- 461 (2.3,3.3) 0.00-0.15 0.18 nd 0.09 nd 0.28 A1 1 456 (1.3,3.3) 0.00-0.15 0.07 nd 0.05 nd 0.23 11A, 460 (2.3,4.3) 0.00-0.15 0.16 nd 0.06 nd 0.28 11A, 455 (1.3,4.3) 0.00-0.15 0.14 nd 0.06 nd 0.30 A 459 (2.3,5.3) 0.00-0.15 0.12 nd 0.06 nd 0.28 1A 1I 1 436 (Q.3,3.3) 0.00-0.15 0.39 0.64 nd 0.32 A 429 (8.6,4.9) 0.00-0.15 0.22 nd 0.08 nd 0.24 1A, A 430 (8.6,8A) 0.00-0.15 0.10 nd 0.07 nd 0.27 1

I 455 (7.4,7.9) 0.00-0.15 0.12 nd 0.07 nd 0.25 1A1 460 (4.4,7.3) 0.000.15 0flt0-5 42nl 0.10 nd 0.07 n A nd n

0.23 0-28 K I - -

h1 Ai

-. ,=.

4__ I___.

{Sl s s 7l Ig.I.-t.

l1 Ill)elJ 11%

U IS u .W _ _

nd 0.28 hA, 446 (9.1,3.0) 0.00-0.15 0.18 0.31 11A, 591 (3.4.9.4) 0.00-0.15 0.15 nd 0.06 nd 0.24 IIA, 462 (4.9,5.5) 0.00-0.15 0.40 nd 0.09 nd 0.30 IA1 457 (4.8.72) 0.00-0.15 0.25 nd 0.08 nd 0.28 1A. M595 (0.0,6.1) 0.00-0.15 0.20 nd 0.06 nd 0.28 456 (6.7,0.4) 0.00-0.30 nd 0.14 nd 0.13 nd 0.43 11Ade (6.7.0.4) 0.60-1.20 0.43 nd 0.06 nd 0.22 11- Ad99.. 456 456 (6.7,0.4) 1.20-1.80 0.12 nd 0.07 nd 0.39 11Ademm,1 431 (0.3,9.2) 0.00-0.90 nd 0.15 nd 0.13 nd 0.41 1

_Adeevm__

11 Adwpel 431 (0.3,.92) 0.90-120 nd 0.10 nd 0.10 nd 0.41 11

____ 431 (0.3,9.2) 1.20-1.80 nd 008 nd 0.11 _ d 0.34 11Ad A&,pr2 451 (2.5,1.0) 0.00-0.30 nd 0.04 nd 0.06 nd 0.24 1lAde2 451 (2.5,1.0) 0.30-0.60 nd 0.05 nd 0.06 nd 0.22 451 (2.5,1.0) 0.60-0.90 nd 0.04 nd 0.04 Nd 0.24 11Ad2 II A&,pr2 451 (2.5,1.0) 0.90-1.20 0.07 nd 0.05 Nd 0.24 11A a 451 (2.5,1.0) 1.20-1.50 nd 0.04 nd 0.05 nd 0.20 1 1 Adwo"2 451 (2.5,1.0) 1.50-1.80 nd 0.04 nd 0.04 nd 0.23 llAd4evcc2 451 (8.0,1.5) 0.00-0.30 0.05 nd 0.07 nd 0.22 11Ad&=,2 451 (8.0,1.5) 0.30-0.60 0.06 nd 0.06 nd 0.23 11Ad&,pmr2 451 (8.0,1.5) 0.60-0.90 0.06 nd 0.05 nd 0.25 1A1sev=62 451 (8.0,1.5) 0.90120 0.05 nd 0.06 nd 0.25 1 1A4eePCOM2456 (0.5,0.5) 0.00-0.30 0.93 0.24 nd 0.35 11A*Mvcr2 456 (0.5,0.5) 0.30-0.60 0.02 0.14 nd 0.22 11Adee=62 456 (0.5,0.5j 0.60-0.90 0.10 nd 0.05 nd 0.27 IAO2 456 (0.5,0.5) 0.00-120 0.05 nd 06 nd 0.23 I . -...

r s 71L b1X

-_n____un__._ ,.u v.vw .. _

<  ; llAdeep2

-'C rn . vrw _______ n 1 n-n 0.25

,. 1. - - .- uun ,nu v.vw .l_

I 11Adeep=2 I 457 I ,uv u I I ____ I . _

2-157

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results . . .

Coordinate Depth Cs-137 Co-60 An-241 (xry)y) Activd ' MDA b Actty MDA b Activ l M9DAb I 1Ad= 2 457 (1.0,5.0) 0.30-0.60 0.04 nd 0.07 nd 0.24 1A..e X2 457 (1.0,5.0) 0.60-0.90 0.05 nd 0.07 nd 0.23 11 A&.,.a 457 (1.0,5.0) 0.90-120 0.05 nd 0.07 nd 0.25 I 1Aftpo2 457 (1.0,5.0) 1.20-1.50 nd 0.05 nd 0.05 nd 025 1 bUxoe2 457 (1.0,5.0) 1.50-1.80 0.04 nd 0.05 nd 0.18 I I dbexo2 452 (7.0,4.5) 0.00-0.30 0.04 nd 0.06 nd 0.26 I1 Admw2 452 (7.0,4.5) 0.30-0.60 nd 0.05 nd 0.06 nd 025 11 A&.poa 452 (7.0,4.5) 0.60-0.90 nd 0.04 nd 0.04 nd 020 I IAdW^,ccr2 452 (7.0,4.5) 0.90-120 0.05 nd 0.04 nd 023 11Adeetoxc2 452 (7.0,4.5) 1.20-1.50 0.06 nd 0.05 nd 0.21 I ^dI fotr2 452 (7.0,4.5) 1.50-1.80 0.03 _nd 0.05 nd 0.21 I I Adme2 452 (7.0,9.0) 0.00-0.30 0.07 nd 0.07 nd 0.28 11Adwpcx2 452 (7.0,9.0) 0.30-0.60 0.06 nd 0.07 nd 0.32 I IAd Aoeo2 452 (7.0,9.0) 0.60-0.90 nd 0.06 nd 0.08 nd 0.25 II!Ae&po2 452 (7.0,9.0) 0.90-120 0.07 nd 0.06 nd 0.24 IIAf 1 452 (7.0,9.0) 1.20-1.50 nd 0.05 nd 0.05 nd 0.20 1Ilheepov2 452 (7.0,9.0) 1.50-1.80 nd 0.04 nd 0.05 nd 0.21 nd Indicates non detect, iMtDA provided b No entry In the MDA column is provided when residual radioactivity Isdetected 2-158

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 12 Description Survey Unit 12 is an area of approximately 9800 m2 located immediately north of the Protected Area fence along the Lake Michigan shoreline. No buildings have been located in this area.

Survey Unit 12 is bound to the east by the discharge canal and encompasses the rip-rap breakwater. Subsurface structures and equipment include storm drain lines, electrical conduit, and septic system piping.

History The discharge canal has been dredged on several occasions in plant history to maintain water depth and flow characteristics against the sand build-up that results from current and wave action. The HSA has identified residual radioactivity in Survey Unit 12 soil that is believed to originate from the placement of dredging spoils Inthe beach area.

Radiological Status Residual radioactivity was identified in a several samples within this survey unit. Although trace values of Mn-54 were identified in two of the scoping survey samples used for design of the primary survey, Mn-54 was not identified in any subsequent characterization survey conducted in Survey Unit 12. Residual radioactivity in subsurface soil was not identified by deep core sample analyses. The radiological status of this survey unit is Class 2.

Primarv Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Co-60 Mn-54 Mean value (pCilg) 0.61 0.31 0.05 Standard Deviation (s) 0.51 0.64 0.05 Applying the Unity Rule, l( )2 2 2 X5 OCs 11CS +

4.. 474 Mn 0.51 0.64 )2+ 0.05 at ;1Cs J 4-So) 47Mn) r =0.16 For the Unity Rule the DCGL for the weighted sum is 1. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

2-159

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results DCGL -LBGR - i - 0_

Relative Shift= 63.1 a 0.16 With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 160 x 70 meters Random Numbers 0.482449, 0.413809 X = (0.482449)(160 m) = 77.2 meters Y = (0.413809)( 70 m) = 29.0 meters Sample Spacing L= = jI8014 =26 meters As a conservative measure, 25 samples were collected using 21.2 meter spacing.

SuDportina Surveys Surface soil survey 12A, was conducted to further investigate the bound of potential contamination resulting from the contour grading of dredge spoils in this area. Deep-core sampling was performed in three survey efforts to investigate the extent of potential subsurface contamination. The maximum sample depth was approximately 3.6 meters. Sample point locations were judgmentally selected based on historical data, process knowledge, and location availability due to subsurface obstruction. Survey 12Agp, was performed in association with the GPR (ground penetrating radar) investigation of possible buried legacy material In this area.

Data Summary Survey Unit 12 Survey No. of Samples Radionuclides Mean (pClIg) Max. Value (pCllg) 12A: 18 CS1 3 7 0.61 1.83 CS13 7 0.26 1.48 12A 2 25 Cow 0 0.16 0.18 12Adeepwme 4 CS1 37 ' 0.08 0.08 12A&eePoV2 4 CS13 7 0.52 1.56 12Adeepe3 15 CS137 0.12 0.20 12Aw 4 Cs1 3 7 0.25 0.29

• Co-60 detected in 2 samples only Cs-137 detected In I sample only 2-160

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 12 Legend 0 10 20 40

'0af II I I I I Meters w Suwvy1Unit2 Numbered Local Coordinate Grid Buidinges

• Soil Sample Locaboms Bi Rook Point kMp8Ctrd Afl_North dAr Uttdd 2-161 C- /It

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results .

Survey Results Depth Cs-137 Co-60 Am-241 SurveySre Grd(x-y) Coordinate Grd (m) (PCV ) (pg pCitg)

Activity a MDA b Activity a Activity a MDA Activity a 12A, 57 (0.0,5.0) 0.00-0.15 0.13 nd 0.05 rnd 0.20 12A1 57 (9.0,9.0) 0.00-0.15 0.21 nd 0.04 nd 0.24 12Ai 57 (9.0,9.0) 0.15-0.30 0.08 nd 0.05 nd 0.23 12Ai 59 (0.0,5.0) 0.00-0.15 0.21 nd 0.04 nd 0.24 12A 1 97 (6.0,4.0) 0.00-0.15 0.44 nd 0.06 nd 0.24 12Ai 97 (8.0,1.0) 0.00-0.15 1.83 nd 0.06 nd 0.32 12Ai 97 (9.0,1.0) 0.00-0.15 1.38 nd 0.09 nd 0.32 12A, 97 (9.0,1.0) 0.15-0.30 1.38 nd 0.06 nd 0.30 12A, 97 (9.0,1.0) 0.30-0.45 1.18 nd 0.06 nd 0.28 12A, 97 (9.0,1.0) 0.45-0.60 0.43 nd 0.05 nd 0.21 12A, 97 (9.0,1.0) 0.60-0.75 0.29 nd 0.05 nd 0.18 12Ai 97 (9.0,4.0) 0.00-0.30 0.32 nd 0.04 nd 0.17 12A, 97 (9.0,7.0) 0.00-0.15 0.11 nd 0.04 nd 0.17 12A, 97 (9.0,7.0) 0.15-0.30 0.15 nd 0.04 nd 0.14 12A1 98 (0.0,1.0) 0.00-0.15 1.37 nd 0.07 nd 0.32 12A, 98 (2.0,4.0) 0.00-0.15 0.91 nd 0.05 nd 0.19 12A, 116 (0.0,0.0) 0.00-0.15 0.32 nd 0.06 d 0.24 12A1 114 so.) o.o0-0.15 0.17 nd 0.05 nd 0.19 12A.. 631 I'A A 7-A n0ns0.1 0.32 nd U.ur no U.33 12_ 93 (3.6,9.0) 0.00-0.15 0.19 nd 0.02 nd 0.16 12A 17076 (3.6,0.2) 0.00-0.15 0.08 nd . 0.06 nd 0.26 12A 2 55 (4.8,7.8) 0.00-0.15 0.11 nd 0.06 nd 0.24 12A2 95 (4.8,9.0) 0.00-0.15 0.12 nd 0.03 nd 0.20 12A2 17080 (4.8,02) 0.00-0.15 0.15 nd 0.06 nd 0.27 12A2 57 (6.0,7.8) 0.00-0.15 0.20 nd 0.06 nd 0.25 12A2 97 (6.0,9.0) 0.00-0.15 0.14 nd 0.05 nd 0.21 12A2 17084 (6.0,02) 0.00-0.15 0.04 nd 0.05 nd 0.29 12A2 59 (72,7.8) 0.00-0.15 0.20 nd 0.05 nd 0.27 12A2 99 (7.2,9.0) 0.00-0.15 0.19 nd 0.04 nd 0.20 12A2 17088 (7.2,0.2) 0.00-0.15 0.18 nd 0.06 nd 0.24 12A 2 61 (8.4,7.8) 0.00-0.15 0.28 nd 0.07 nd 0.30 12A2 101 (8.4.9.0) 0.00-0.15 0.16 nd 0.05 nd 0.20 12A2 17092 (8.4.02) 0.00-0.15 0.07 nd 0.04 nd 0.21 12A 2 63 (9.6.7.8) 0.00-0.15 0.19 nd 0.06 rid 0.25 12A2 103 (9.6.9.0) 0.00-0.15 0.21 nd 0.04 nd 0.22 12A2 17096 (9.6.02) 0.00-0.15 0.19 nd 0.07 nd 0.25 12A2 106 (0.8.9.0) 0.00-0.15 nd 0.07 0.14 nd 0.28 12A2 17171 (2.0.02) 0.00-0.15 1.48 0.18 nd 0.28 12A2 61 (4.6.4.8) 0.00-0.15 nd 0.06 nd 0.05 nd 0.27 12A2 83 (2.3,5.9) 0.00-0.15 0.15 nd 0.04 nd 0.22 12A2 117 (2.5,4.5) 0.00-0.15 0.89 nd 0.05 nd 0.31 12A2 57 (2.6.3.9) 0.00-0.15 0.28 nd 0.06 nd 0.26 12A2 78 (4.1,2.3) 0.00-0.15 0.16 nd 0.04 nd 0.20

• nd Indicates non detect, MDA provided

" No entry In the MDA column Is provided when residual radioactivity Isdetected 2-162

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Survey - Depth Cs-137 Co-60 Am-241 Survey Grid Coordinate (meteim) (PC /) (p il) (pCVgl)

Activity

• MDA b Activity MDA b Activity MDA b 12Adwpsi 57 (8.1,9.3) 0.00-0.60 0.08 nd 0.08 nd 0.36 12Ad..px1 57 (8.1,9.3) 0.60-1.80 nd 0.12 nd 0.09 nd 0.40 12Adeepei 57 (8.1,9.3) 1.80-3.00 nd 0.04 nd 0.04 nd 0.18 12Adfe.x1 57 (8.1.9.3) 3.00-3.60 nd 0.04 nd 0.06 nd 0.21 12A*.pJ 2 97 (9.0,2.0) 0.00-0.60 1.56 nd 0.06 nd 0.27 0.20 l nd 0.07 nd 0.28 12A&p 12_A__p_

97 97 (9.0,2.0)

(9.0,2.0) 0.60-1.50 2.40-3.30 0.21 j nd 0.05 nd nd 0.23 0.18 12Adfxrm2 97 (9.0,2.0) 3.30-4.05 0.11 nd 0.04 12Aossor3 54 (0.0.7.0) 0.00-0.30 nd 0.05 nd 0.05 nd 0.24 1254 (0.0,7.0) 0.30-0.60 0.03 nd 0.05 nd 0.27 12Adeej=03 56 (0.0,7.0) 0.00-0.30 0.20 nd 0.05 nd 026 12Adaepcn3 56 (0.0,7.0) 0.30-0.60 0.16 rnd 0.06 nd 024 52Aftm=.3 (0.0,7.0) 58 0.00-0.30 0.12 nd 0.06 nd 0.26 0.30-0.60 0.10 nd 0.05 nd 0.22 12A_ _=.3 58 (0.0.7.0) 60 (0.0,7.0) 0.00-0.30 0.19 nd 0.05 nd 0.27 12A&.p=a (0.0,7.0) 0.30-0.60 0.11 nd 0.05 nd 0.25 12Adp a3 60 60 (0.0,7.0) 0.60-0.90 0.12 nd 0.06 nd 0.25 12Aeeopx3 62 (0.0.7.0) 0.00-0.30 I 12A4.pX"3 12Adecwea 62 (0.0,7.0) 0.30-0.60 nd 0.06 nd 0.05 nd 027 12A&opxa3 64 (0.0,7.0) 0.00-0.30 nd 0.06 nd O.06 nd 0.29 0 nnff AA I nd 10-23 K , .-

IZAdeep=c43 _ _

I...n

%F'1F

%W.U.wjV,-J l}

-0%1 nu

.sou v.ls

.. w w.

0.05 nd 026 l2AMdepc3 64 (0.0,7.0) 0.60-0.90 0.08 nd 12AdaeWp3 64 (0.0,7.0) O.0 120 0.05 nd 0.05 nd 0.26 12Asw 98 (4.0,1.3) 1.20-1.50 0.29 nd 0.03 nd 0.19 12A115 (4.0,7.1) 1.20-1.50 l 0.20 0 nd 0.06 nd 0.26 12Aw 115 (4.073.) 1 1.20-1.50 02nd 0.05 nd 0.06 nd 1026 i2A- 115 l (4.0,01) 1.20-1.50 nd 0.04 nd j 0.05

-- j nd _ 025 a nd indicates non detect, MDA provided b No entry In the MDA column is provided when residual radioactivity is detected c Large rock obstructed the first 30 cm at this location.

2-163

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 13 Descrintion Survey Unit 13 is a narrow expanse of shoreline between the water's edge and the vegetation line in the northeast section of the owner controlled property. This location is approximately 49,500 m2 in area and contains no surface or subsurface structures, components, or equipment.

History Survey Unit 13 is a pristine section of Lake Michigan shoreline that has remained remote from normal plant operational activities. The HSA designates this area as unlikely to contain residual radioactivity in soils.

Radiological Status Due to near-record lows in Lake Michigan water level, additional shoreline is exposed for surveys conducted in this area. Three samples collected in this survey unit identified residual radioactivity below IDCGLs. The location of this survey unit is near the plant discharge canal where licensed radioactive liquid release occurred; the levels of radionuclides Identified in these surveys is consistent with contaminant migration that would result from wind, current, and wave action along the shoreline. The radiological status of this survey unit IsClass 3.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Mean value (pCVg) 0.19 Standard Deviation (a) 0.15 The relative shift for characterization surveys Isdetermined using LBGR values set at 50% of the IDCGL.

Relative Shift =DCGL-LBGR - 5.11- 2.5 CY 0.15 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

As a conservative measure 20 sample data points were selected for this survey unit.

2. Sample Locations Sample locations were selected by random method. Random numbers were generated and applied to the bounding survey unit dimensions to determine data point coordinate locations. This process was continued until 20 sample data points fell within the survey unit boundary.

Supporting Surveys No supporting surveys were conducted in this survey unit.

2-164

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Data Summary Survey Unit 13 Survey 13A,

• A !.A. . i.-J 2-165

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 13 +

LAKE MICHIGAN

. '  ::: C  :, .  ::  :  : ,  : .,, .;:,: . , . . , ' E, ': :0:-.':':

. n  :  : .I ... I1: i  :: ........ , .:1 , I  ::  ! I

, ............ .: 0 ,, . . l

,. .. l .......

t I - :-:  : -  :

.: . . i . . l i:

L

. I . .......  :  : .: ......... i .  : .............  ::: I i g -:: . -

4

. ..... ...... . ... .... . _-i l 0

. l

'1 i

t

• l

,.^ *1 _

j.

• l i

ll l il l Bl _l1_

l ll w _j _,

11 ,D,

' ' i' l l l l _ l l l l l l l __x p r . . _,, l1._

it1ilr: l lil 3 l 5wFF! r _X 1 !1!

• l / !x [ ,N j i* . . i !-.::!--![D l l ^ r-5---1--

4: I

. .: . . .  ! 1 . ., 4  ! Ti . . ! l l _ l -. - l

,,, . I 1 1:,

D

: .: .. fl .

. 1 .,.....:. ' I j .... i 1, :,1, _._

i ?i_ .,:

i

......  : I

.: s I ..

. - - eI A 1 1 i I I I

5 : t . > P ......  : nA ......  : 1 t > .. ....... x ., a  ! E J i 1.+

iL *St_. I z ,Sd ..... .. , . I  ! . \. .::: E: I I .: I i; . . I r,, ' X,: j X, 0 , . ,  ! ., ,  : ' 0 X , ( . .  : l, , l

, [, . ,  ! I l l, j k t L i 0 i  ! ' - J I 1 i \ 0 5 ' - -

I [ h r  ;  !  !

f I

- i :t: :::!:: :f : . i - -. j; i 1 0 j%,

s *S,*tl,,- j , j  ; , j . l , ,'YS: t ,:  ::.-,

j;!l

. j

.t i .  : . .,:  : , ., i, .: I .:, ., ': , \t,,  :,, 1,,

i  !  : . .  : . , . ,:  ;,:  : ! , ,, , ,, Xr: . :.:  ! I, JI,.

.1: :: ::: : : V- - .  : 1:: j j  ! .t . + : !i-! i i i 0 50 100 200 Legend I£ I I I Meters

_ SwNey Unt 13 Numbered Lorl Cwordinate Grid Bulidings

• Soil Sample Locations Big Rock Point

"- ~

lmwa4 as 2-166

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Cs-1437 Co-60 Am-241 Survey Grld Coordinate Depth (pCVg) (pCqg) (pCis)

(x-y) ) Activity' MDA b Actvi DA Activity MDA b l3A1 15338 (8.5,0.7) 0.00-0.15 0.22 nd 0.05 rid 0.22 i3A 14480 (2.6,0.3) 0.00-0.15 0.33 0.04 nd 0.28 1

(0.0,9.6) 0.00-0.15 0.03 nd 0.07 nd 0.25 13A 1 14691 14884 (0.6,3.0) 0.00-0.15 0.07 nd 0.08 nd 0.25 13Ai 15229 (0.8,0.7) 0.00-0.15 0.03 nd 0.08 nd 0.33 13A 1 14831 (5.4.7) 0.00-0.15 0.54 nd 0.08 nd 0.30 13A, 15388 (5.8,3.3) 0.00-0.15 0.06 nd 0.06 nd 0.25 13A, 15268 (5.8,42) 0.00-0.15 0.12 nd 0.06 nd 0.21 13Ai 15241 (2.1,0.0) 0.00-0.15 0.95 nd 0.07 nd 0.28 13A, 14705 (8.0,6.1) 0.00-0.15 0.71 nd 0.05 nd 0.26 13A 1 14706 (6.5.4.9) 0.00-0.15 0.93 nd 0.06 nd 0.25 13A, 14762 (1.0,2.0) 0.0O-0.15 0.33 nd 0.06 nd 0.27 13Ai 14964 (7.6,4.5) 0.00-0.15 0.09 nd 0.06 nd 0.26 13A1 15020 (7.4,6.5) 0.00-0.15 020 0.07 nd 0.24 13A, 14578 (4.7.6.9) 0.00-0.15 0.23 nd 0.05 nd 0.24 13Ai 13A, 14991 (8.6,2.3) 0.00-0.15 0.07 rd 0.06 rd 0.24 13Ai 14957 (0.8,1.8) 0.00-0.15 0.14 rd 0.07 nd 0.23 13A, 14791 (6.9,1.7) 0.00-0.15 0.55 rd 0.05 nd 0.27 0.28

.\11 ZI1 nnx s f.liri n0n

^6A 1 q lo A. I9 .- I n. -  ;:,V-

^1 u 1n U.OA 7 _.

nd 0.27 I 13A, 14661 1 (4.6,5.8) 10.00-0.1 5 0;.07 I nd 0.06 i- fridicatesion detect, MDA provided b No entry inthe MDA column Is provided when residual radioactivity Is detected 2-167

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Survey Unit 14 Description Survey Unit 14 is a narrow expanse of shoreline between the waters edge and the vegetation line in the northwest section of the owner controlled property. This location is approximately 33,000 m2 in area and contains no surface or subsurface structures, components, or equipment.

Historv Survey Unit 14 Is a pristine section of Lake Michigan shoreline that has remained remote from normal plant operational activities. The HSA designates this area as unlikely to contain residual radioactivity in area soils Radiolo-gical Status Residual radioactivity was not identified in any soil samples collected in Survey Unit 14 above established background levels. The radiological status of this survey unit is Class 3.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nucdide identification Cs-1 37 Mean value (pCig) 0.50 Standard Deviation (cv) 0.40 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift =DCGL-LBGR 5.11-2.5 .2 Ci 0.15 With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

As a conservative measure 20 sample data points were selected for this survey unit.

2. Sample Locations Sample locations were selected by random method. Random numbers were generated and applied to the bounding survey unit dimensions to determine data point coordinate locations. This process was continued until 20 sample data points fell within the survey unit boundary.

SuDporting Surveys No supporting surveys were conducted in this survey unit.

2-168

BRP LICENSE TERMINATION PLAN RevisIon 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Data Summary Survey Unit 14 I Survey No. of Radionuclides I Mean Max. Value SamDles I (SCUMa (oci/0) I 14A, 1 20 Cs137 0.16 0.40 2-169

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 14 0 50 100 200 Scak. I I I MeleIfn P R ysun Unid 14 Numbered Locl Coordinate Gnd l Ii Studures

• SoilSampb Lobons I' Artd 2-170 C-/(,

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-1 37 Co-60 Am-241 Survey Grid (x,y) (i) (pClg) (pCil) (pC~g)

Activity MDA b Activity " MDA b Actvity MDA b 6886 (4.9,22) 0.0O-0.15 0.10 nd 0.06 nd 0.2 14A, 14A 1 16501 (9.1,4.4) 0.00-0.15 0.20 nd 0.05 nd 0.2 16779 (7.2,1.7) 0.00-0.15 0.04 nd 0.05 nd 0.2 14A, 16769 (4.5,5.5) 0.00-0.15 0.40 nd 0.04 nd 02 14A, 17011 (9.7,3.6) 0.00-0.15 0.20 nd 0.05 nd 0.2 14A, 14A, 16501 (4.6.1.1) 0.00-0.15 0.09 nd 0.05 nd 0.2 16762 (6.7,32) 0.0O-0.15 0.20 nd 0.07 nd 0.2 14A, 16963 (9.5,2.1) 0.00-0.15 0.09 nd 0.06 nd 02 14A, 16704 (7.8.4.4) 0.00-0.15 0.20 nd 0.05 nd 0.2 14Ai 14Ai 16413 (3.2,4.7) 0.00-0.15 nd 0.04 nd 0.05 nd 0.2 16957 (7.4,2.0) 0.00-0.15 0.10 nd 0.05 nd 0.2 14Ai 16364 (8.3.5.6) 0.0o0-015 0.30 nd 0.06 nd 0.2 14Ak 16174 (9.8,5.4) 0.00-0.15 0.20 nd 0.06 nd 0.2 14Ak 14Ai 16777 (3.4,9.8) 0.0o0-015 0.08 nd 0.04 nd 0.2 14A, 16766 (6.9,8.4) 0.0D0-015 nd 0.05 nd 0.05 nd 0.3 14Ai 16375 (5.7,0.8) 0.00-0.15 nd 0.04 nd 0.06 nd 0.2 14A1 16700 (6.7,3.9) 0.00-0.15 0.07 nd 0.06 nd 0.2 14A, 16636 (6.6.1.4) 0.00-0.15 0.06 n nR - nd 0.04 nd 0.2 nn- I A I_._A fn9 r^ 1 Fs IrI A

v.v_

14AO I~

.e^.

13 t

_ O _

n 7

n j

.~.)

f

~ I% ~fl fVII UJU n nf I__ '"

nf u.uo u'.u u

I EU0. 1

.. w

. A 1

-I .A 40ft'2 n7R n 9 0 00@0.15- ncl U.UD clu u.wi fla v

I II "14A1 V.WI

_ _____I ,

nindicates non detect, MDA provided b No entry In the MDA column is provided when residual radioactivity Is detected 2-171

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, SIte Characterization 411/2003 Appendix 2-E, Characterization Survey Results Survey Unit 15(1)

Descriotion Survey Unit 15(1) is an area of approximately 11,500 m2 located adjacent to the western boundary of the surface water drainage stream. This area encompasses the north/south section of the Woods Road and the plant septic drainfield. The drainfield is a mound constructed pump-back system that connects to septic effluent holding tanks located inside the Protected Area. Subsurface structures and components include electrical conduit and septic piping in vicinity of the Woods Road.

History The Woods Road is an unimproved lane that provided access to the weather station tower formerly located in Survey Unit 15(4). Several locations in connecting survey units along this road were used as locations for the storage construction debris and refuse.

Radiological Status Residual radioactivity was not identified in any soil samples collected InSurvey Unit 15(1) above established background levels. The drainfield connection to the site septic system represents a potential contaminant migration pathway into this area. The drainfield is scheduled for further evaluation when the septic system is removed from service. The radiological status of this survey unit is Class 2.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCi/g) 0.19 Standard Deviation (car) 0.25 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

RelativeShift= DCGL-LBGR = 5.11-2.5 a 0.25 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 85 X 190 meters Random Numbers 0.866922, 0.791992 X = (0.866992)( 85 m) = 73.6 m Y = (0.791992)(190 m) = 150.4 m Sample Spacing L = Fe = ff3-4/ = 28.7 meters 2-172

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results As a conservative measure 25 samples were collected using 20 meter spacing.

SuDporting Surveys No supporting surveys were conducted in this survey unit.

Data Summary Survey Unit 15(1)

Survey Saples Radionuclie Mean (pCUg) Max. Value (pCUlg) 15(1)AI 25 l Cs1 37 _ 0.22 1 1.20 2-173

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Survey Unit 15(1) 0 10 20 40 Legend sek, I I I I I I I I M eter

_ sunyunntls(l5) JNumbed Local Coordinae Grid E Bugdings and Structures

• SWl Siampla Loatons BigRock Point Impacted A.a. North 2-174 C-!7

BRP LICENSE TERMINATION PLAN Revision C Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Surey Results Survey Results Survey Grd Coordinate Depth Cs.137 Co-60 Amn-241 G (x,y) (m) (inV (PC -Y (pCU) (pC)I)

Activity

• MDA Activity

• MDA Activity

• MDA 288 (3.6,0.5) 0.00-0.15 0.06 nd 0.06 nd 0.27 15(1)A1 15(1)A1 286 (3.6,0.5) 0.00-0.15 0.37 nd 0.07 nd 0.29 15(1)A1 284 (3.6,0.5) 0.00-0.15 0.33 nd 0.04 nd 0.22 282 (3.6,0.5) 0.00-0.15 0.17 nd 0.05 nd 0.23 15(1)A1 15(1)A1 280 (3.6,0.5) 0.00-0.15 0.21 nd 0.05 nd 0.23 241 (3.6,0.5) 0.00-0.15 0.06 nd 0.05 nd 0.26 15(1)AI 203 (3.6,0.5) 0.00-0.15 0.20 nd 0.05 rid 0.28 15(1)AI 164 (3.6,0.5) 0.00-0.15 0.08 nd 0.06 nd 0.25 15(1)AI 126 (3.6,0.5) 0.00-0.15 0.12 nd 0.06 nd 0.25 15(1)A1 17185 (3.6.0.5) 0.00-0.15 0.13 nd 0.05 nd 0.22 15(1)A1 17189 (3.6.0.5) 0.00-0.15 0.18 nd 0.06 nd 0.31 15(1)A1 17213 (3.6,0.5) 0.00-0.15 0.27 nd 0.05 nd 028 15(1)AI 17227 (3.6,0.5) 0.00-0.15 0.14 nd 0.06 nd 0.29 15(1)AI 15(1)AI 17229 (3.6.0.5) 0.00-0.15 0.13 nd 0.05 nd 0.19 15(1)A1 17215 (3.6,0.5) 0.00-0.15 0.15 nd 0.06 nd 0.29 K. I

de-'..A

, 15(1)A1 I1

.- 7^a few I

.I & 9% _

W4.VoU.W1. n tn%-n i onic

.. w na u.w0 nu v=&F 0.31 15(1)AI 17187 (3.6,0.5) 0.00-0.15 1.20 nd 0.06 nd (3.6,0.5) 0.00-0.15 0.18 nd 0.04 nd 0.22 15(1)AI 17189 17203 (3.6.0.5) 0.00-0.15 0.18 nd 0.06 nd 0.28 15(1)AI (3.6,0.5) 0.00-0.15 0.23 nd 0.06 nd 0.29 15(1)AI 17217 17231 (3.6,0.5) 0.00-0.15 0.06 nd 0.05 nd 0.26 15(1)AI 586 (0.1,22) 0.00-0.15 nd 0.05 nd 0.05 nd 0.26 15(1)A1 15(1)A1 183 (6.1,5.8) 0.00-0.15 0.19 nd 0.05 rd 0.24 17186 (4.7,3.7) 0.00-0.15 0.20 nd 0.05 rnd 0.25 15(1)AI (8.5.7-3) 0.00-0.15 0.25 nd 0.05 nd 0.22 15(1)A1 17181

• nd Indicates non detect, MUA provided b No entry in the MDA column Is provided when residual radioactivity is detected 2-175

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 15(2)

Description Survey Unit 15(2) is an area of approximately 10,300 m2 west of the Protected Area that parallels the shoreline south of Survey Unit 14. This area encompasses an east/west section of the Woods Road connecting Survey Units 15(1) and 15(3). Survey Unit 15(2R) is contained within this area along the southwest section of the Woods Road. Subsurface structures and components do not exist in this wooded area.

History The Woods Road is an unimproved lane that provided access to the former weather station tower located in Survey Unit 15(4). Low levels of radioactivity have been identified in construction debris (Survey Unit 15(2R)) that was once stored along this road. Cleanup efforts have resulted in the removal of all construction waste in this area.

Radiological Status Residual radioactivity was not identified in any soil samples collected in this survey unit above established background levels. The radiological status of Survey Unit 15(2) is Class 2.

Primary Survey Desicn

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCil) 0.36 Standard Deviation (a) 0.11 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

RelativeShift=

RelaiveShit =0.DCGL-LBGR = 5.11-2.5 11T =2 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 270 X 130 meters Random Numbers 0.444554, 0.428292 X = (0.444554)(270 m) = 120.0 m Y = (0.428292)(130 m) = 55.7 m Sample Spacing L = 1'mN = F 5Y4 = 27.0 meters 2-176

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results As a conservative measure 25 samples were collected using 20 meter spacing.

SuoDortinci Surveys Supporting survey 15(2)A1 was performed for the evaluation of surface and subsurface soils in the vicinity of construction debris along the Woods Road. Data point locations were judgmentally selected based on historical information and process knowledge for areas of greatest potential to contain radioactivity.

Data Summary Survey Unit 15(2)

Survey No. of Samples Radionuclides Mean (pCug) Max.Value (pCUi) 15(2)A1 44 CS13 7 0.18 1.06 15(2)A 2 25 Cs1 37 0.22 0.53 2-177

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 15(2) 0 10 20 40 SoL I,, I I I I I I Meters Big Rock Point 2-178 fib

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Survey Grid Coordinate Depth Cs-137 Co-60 Am-241 uey(x,y) (m (PC ) (pC ) (pCVQ)

. Activity MDA Activity MDA Activity MDA 15979 (1.0,7.7) 0.00-0.15 0.24 nd 0.05 nd 0.24 15(2)A 1 0.24 15(2)A, 16042 (5.0,1.7) 0.00-0.15 0.15 nd 0.06 nd 16042 (1.0,1.7) 0.00-0.15 0.29 nd 0.04 nd 0.23 15(2)A, 0.24 152)A, 16041 (7.0,0.0) 0.00-0.30 0.12 nd 0.05 nd 16042 (1.0,0.0) 0.30-0.60 nd 0.05 nd 0.04 nd 0.22 15(2)A 1 0.21 15(2)Ai 16042 (1.0,2.0) 0.00-0.30 0.44 nd 0.03 nd 16042 (1.0,4.0) 0.00-0.30 0.11 nd 0.05 nd 0.18 15(2)AI 0.25 15(2)A, 15976 (6.0,4.0) 0.00-0.30 0.15 nd 0.04 nd 15976 (6.0,4.0) 0.30-0.60 0.06 nd 0.06 rnd 0.22 15(2)A1 0.22 15(2)A, 15976 (6.0,4.0) 0.60-0.90 nd 0.04 nd 0.05 nd 15976 (6.0,4.04 0.90-120 nd 0.04 nd 0.05 nd 0.20 15(2)A, 0.22 15(2)A 1 15976 (4.5,4.0) 0.00-0.30 0.07 nd 0.06 nd 15976 (4.5,4.0) 0.30-0.60 0.03 nd 0.04 nd 023 15(2)A, 0.22 15(2)Ai 15976 (4.5,4.0) 0.60-0.90 nd 0.04 nd 0.04 nd 15976 (6.0,9.0) 0.00-0.30 0.12 nd 0.05 nd 021 15(2)Ai 0.21 15(2)A, 15976 (6.0,9.0) 0.30-0.60 nd 0.03 nd 0.05 nd 15977 (1.0,4.0) 0.00-0.30 0.09 nd 0.06 nd 0.24 15(2)Ai 0.20 15(2)A 1 15977 (1.0,4.0) 0.30-0.60 nd 0.03 nd 0.03 nd 15977 (4.0,8.0) 0.00-0.30 0.13 nd 0.06 nd 0.21 15(2)Ai 0.21 15l2)A 1 15977 (4.0,8.0) 0.30-0.60 nd 0.04 nd 0.03 nd 15977 (4.0,8.0) 0.60-0.90 nd 0.05 nd 0.05 nd 0.19 15(2)Ai 0.23 15(2)A 1 15977 (5.5,8.0) 0.00-0.30 0.04 nd 0.05 nd 15977 (5.5.8.0) 0.30-0.60 nd 0.04 nd 0.04 nd 0.18 15(2)AI 0.20 15(2)A, 15977 (2.5.8.0) 0.00-0.30 0.02 nd 0.04 nd 15977 (2.5,8.0) 0.30-0.60 nd 0.05 nd 0.05 nd 0.28 15(2)Ai 0.21 15(2)A, 15977 (4.0,5.0) 0.00-0.30 0.14 nd 0.06 nd 15977 (4.0,5.0) 0.30-0.60 nd 0.04 nd 0.05 nd 0.22 15(2)A, 0.27 15(2)Ai 15976 (8.5,8.0) 0.00-0.30 0.80 nd 0.09 nd 15976 (8.5,8.0) 0.30-0.60 0.08 nd 0.06 nd 0.21 15(2)Ai 0.21

• 5(2)Ai 15976 (8.5,8.0) 0.60-0.90 0.03 nd 0.06 nd 15977 (0.5,8.0) 0.00-0.30 0.11 nd 0.05 nd 0.23 15(2)A 1 0.28 15(2)A, 15977 (0.5,8.0) 0.30-0.60 1.06 nd 0.07 nd 15977 (0.5,8.0) 0.60-0.90 nd 0.04 nd 0.04 nd 0.19 15(2)Ai 0.21 15l2)A, 15976 (6.0,8.0) 0.00-0.30 0.12 nd 0.06 nd 15976 (6.0,8.0) 0.30-0.60 0.03 nd 0.05 nd 0.22 15(2)Ai 0.19 15(2)Ai 15976 (6.0,8.0) 0.60-0.90 rnd 0.03 nd 0.05 nd 16038 (4.0,2.0) 0.00-0.30 0.10 nd 0.05 nd 0.21 15(2)Ai 0.22 15l2jA, 16038 (4.0,2.0) 0.30-0.60 rnd 0.04 nd 0.05 nd 15975 (6.0,4.0) 0.00-0.30 0.12 nd 0.06 nd 0.21 15(2)A 1 0.19 15(2)Ai 15975 (6.0,4.0) 0.30-0.60 rnd 0.05 nd 0.06 nd 15974 (4.0,2.5) 0.00-0.30 0.24 nd 0.05 nd 0.22 15(2)A 1 0.18 15M2MA 15976 (8.5,6.5) 0.30-0.60 0.07 nd 0.04 nd 15976 (8.5,6.5) 0.60-0.90 nd 0.05 nd 0.04 nd 0.19 15(2)Ai 0.19 15(2)Ai 15976 (8.58.0) 0.90-120 nd 0.04 nd 0.05 nd (0.0,5. 1 0.00-0.15 0.34 nd 0.04 rnd 1 0.21 15(2)A 2 71 15l2)A 2 15742 (0.0,5.7) 0.00-0.15 0.46 nd 0.05 rd 0.23 15(2)A2 15740 (0.0,5.7) 0.00-0.15 0.23 nd 0.04 rd 0.23 15738 (0.0,5.7) 0.00-0.15 0.13 nd 0.05 rnd 0.28 15(2)A 2 15736 (0.0,5.7j 0.00-0.15 0.53 nd 0.05 rnd 0.26 15(2)A2 15864 (0.0,5.7 0.00-0.15 0.10 nd 1 0.06 I nd 0.21 15(2)A2 2-179

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Cs-137 Co-60 Am-241 Survey Grid (x,y) ) Depth Coordinate (M(o) (PCC¢ (iiEgg)

- Activity MDA Activiy MDA Activ MDA 15(2)Pk 15862 (0.0,6.7) 0.00-0.15 0.13 nd 0.07 nd 0.34 15(2)A2 15860 (0.0,5.7j 0.00-0.15 029 nd 0.03 nd 0.29 15(2)A2 15988 (0.0.5.7) 0.00-0.15 020 nd 0.06 nd 0.24 15(2)A2 15986 (0.0,5. 1 0.00-0.15 027 nd 0.05 nd 0.22 15(2)A 2 15984 (0.0,5.7) 0.0O-0.15 0.26 nd 0.05 nd 0.30 15(2)A2 15982 (0.0,5. 0.00-0.15 0.16 nd 0.05 nd 024 15(2)A2 15980 (0.05. 0.00-0.15 0.08 nd 0.05 nd 0.21 15(2)A2 15978 (0.0,5.7 0.00-0.15 0.15 nd 0.05 nd 0.26 15(2). 15976 (0.0,5.n O.O0-0.15 0Q23 . nd 0.05 rnd 023 5(2A2 16112 (0.0,5.7) 0.0o-0.15 0.16 nd 0.05 nd 025 15(2WA 16110 (0.0,5.7) 0.00-0.15 0.08 nd 0.05 nd 0.23 15(2)A2 16108 (0.0,5.7) 0.00-0.15 028 nd 0.05 nd 0.19 15(2)A2 16106 (0.0,5.6 0.00-0.15 0.23 nd 0.04 nd 0.2 15(2)A2 16104 (0.0,5.0 0.00-0.15 0.16 nd 0.04 nd 0.18 15(2)A2 16102 (0.0,5.7) 0.00-0.15 0.44 nd 0.05 nd 0.29 15t2AQ 16228 (0.0,5.7) 0.00-0.15 0.09 nd 0.05 nd 0 _22 15t2A2 16226 (0.0,5.n 0.00-0.15 0.24 rd 0.05 rid 024 15(2WA 16224 (0.0,5.n 0.00-015 0.1A7 rd 0.04 rd 021 15(2A2 16350 (0.05.7 0.00-0.15 0.05 rd 0.04 id 0.17 nd indicates non detect, MDA provided b No entry In the MDA column Is provided when residual radioactivity Is detected 2-180

BRP UCENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 15(2R)

Description Survey Unit 15(2R) is an area of approximately 18 m2 located along the south edge of the Woods Road within the boundaries of Survey Unit 15(2). Subsurface structures and components do not exist In this wooded area.

Historv This location was a storage area for minor volumes of miscellaneous refuse and construction debris. Surveys conducted during removal of this material identified radioactivity of plant origin in a small area of approximately two crumbling red bricks. All construction debris has been removed from the area. A post-remediation survey was conducted and confirmatory measurements were performed by representatives of the Michigan Department of Environmental Quality (MDEQ) and USNRC, Region 3.

Radioloaical Status The results of surveys conducted following the removal of soil and construction debris have identified this area to contain radioactivity levels similar to the established reference background value for northwestern Michigan. The radiological status of Survey Unit 15(2R) is Class 1.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Co-60 Mean value (pCilg) 1.84 0.06 Standard Deviation a 1.46 0.02 Applying the Unity Rule, I, 2 a 2 2 0 Cs +( 0 Co 142 0.0= o2 DCGL ) DCGL ) - V4.11c) 99CO a =0.29 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift= IDCGL-LBGR 1-0.5 = 1.7 a 0.29 With a and , error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 17 data points.

2-181

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 3 X 6 meters Random Numbers 0.866667,0.762408 Random Start Location X = (0.866667)(3 m) = 2.6 m Y = (0.762408)(6 m) = 4.6 m Sample Spacing L = E = Fi81=1.02 meters As a conservative measure, 19 sample datapoints were collected for the primary survey.

• SurD~ortina Surveys A surface scan survey ofl 00% coverage was conducted for the investigation of potential areas of elevated contamination. Supporting surveys 15(2R)Bdeep., and 15(2R)Bd.ep.2were performed for the evaluation of potential contaminants insubsurface soil. Inaddition, data point locations were selected by regulatory personnel for split sample comparison with MDEQ and USNRC.

Data Summary Survey Unit 15(2R)

Survey 15(2R)B1 l Data Points 19 I_

Radionuclides C 137 I Mean Cl/

0.75 Max.Value pCilg 2.03 I

15(2R)Bdft 1 5 CS137 0.06 0.08 2-182

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 15(2R) 0 2.5 5 10M eters ulAgd

- Survy Unit *5(2R) 0 jmtbed Local Coordinate Grid

• Soil a.mpli Locations Big Rock Point I .- da.

Fw td_

2-183 6- 0

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Survey Results Survey Grid l Coordinatec f Dept Cs-137 (pClg) 1 Co-60 (pCIg) Am-241 (pC/g)

.0)

( Y)___Activity'_W e l Activitya MDAW Actvy TMDA b 15(2R)B, 16039 (7.2)(1.0) 0.00-0.15 0.29r nd 0.07 nd 0.24 15(2R)B, 16039 (8.4)(1.0) 0.00-0.15 0.02 nd 0.05 nd 0.27 15t2R)B, 16039 (9.6)(1 .0) 0.00-0.15 0.07 nd 0.05 nd 0.22 15 2R)B1 16039 (7.2)(2.2) 0.00-0.15 0.25 nd 0.05 nd 0.22 15(2R)Bi 16039 (8.1)(1 .8) s 0.00-0.15 0.24 nd 0.06 nd 0.22 15(2R)Bi 16039 (8Aj(2.2) 0.00-0.15 0.24 nd 0.06 nd 0.26 15(2R)B, 16039 (9.6)(2.2) 0.00-0.15 0.49 nd 0.05 nd 0.28 15(2R)B, 16039 (7.2X34) 0.00-0.15 0.51 nd 0.06 nd 0.24 15(2R)B, 16039 (8.4)(3.4) 0.00-0.15 1.40 nd 0.05 nd 0.25 15(2R)Bi 16039 (9.6)(3A) 0.00-0.15 2.03 nd 0.08 nd 0.34 15(2R)Bi 16039 (7.2)(4.6) 0.00-0.15 1.15 _nd 0.06 nd 0.29 15(2R)Bi 16039 (8.4)(4.6) 0.00-0.15 0.42 nd 0.04 nd 0.20 15(2R)Bi 16039 (9.6)(4.6) 0.00-0.15 1.53 nd 0.04 nd 0.23 15(2R)Bi 16039 (7.2)(5.8) 0.00-0.15 0.77 nd 0.05 nd 0.20 15(2R)BI 16039 (8.4)(5.8) 0.00-0.15 1.74 nd 0.03 nd 0.28 15(2R)BI 16039 (9.6)(5.8) 0.00-0.15 0.53 nd 0.04 rid 0.24 15(2R)Bi 16039 (8.7)(3.9) 0.00-0.15 1.55 nd 0.07 nd 0.27 15(2R)Bjcwpc 16039 (8.1)(1.8) 0.15-0.30 nd 0.04 nd 0.05 nd 0.22 15(2R)B1dqepo 16039 (8.7)(3.9) s 0.15-0.30 0.23 nd 0.04 nd 0.20 15(2R)BidWp- 16039 (8.7)(3.9) s 0.30-0.60 0.08 nd 0.05 nd 0.22 15(2R)B2d9, 16039 (8.0)(2.0) 0.00-0.15 e -

15(2R)B2d 16039 (8.0)(2.0) 0.15-0.30 0.04 nd 0.05 nd 0.26 15(2R)B2deepw 16039 (8.0)(2.0) 0.30-0.45 nd 0.04 nd 0.04 nd 0.21 15(2R)B2feevm 16039 (8.0)(2.0) 0.45-0.60 nd 0.04 nd 0.05 nd 0.21 15(2R)B 16039 (8.0)(2.0) 0.60-0.90 nd 0.03 nd 0.05 nd 0.19 rnd Indicates non detect, MDA provided b no entry in the MDA column Is provided when residual radioactivity Is detected d stonelgravel, sample not obtainable S indicates sample splits with NRC and MDEQ 2-184

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results Survey Unit 16(3)

Description Survey Unit 15(3) is an area of approximately 10,100 m2 west of the Protected Area that parallels the shoreline south of Survey Unit 14. This area encompasses an east/west section of the Woods Road connecting Survey Units 15(2) and 15(4). Subsurface structures and components do not exist in this wooded area.

History The Woods Road is an unimproved lane to former plant weather station located in Survey Unit 15(4). A small area along the road in this survey unit was once used for the storage of construction debris and miscellaneous refuse. AJI debris has been removed and the radiological investigation of this location did not identify residual radioactivity.

Radiological Status Residual radioactivity was not identified in any sample collected inthis survey unit above established background levels. The radiological status of survey Unit 15(3) is Class 3.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCi/g) 0.22 Standard Deviation (a) 0.08 The relative shift for characterization surveys is determined using LBGR values set at 50% of the JDCGL.

Relative Shift =DCGL-LBGR 5.11-2.5 =32.6 With a and 1 error levels set at 0.05 and an assumed relative shift of 3,the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 155X 80 meters Random Numbers 0.216531, 0.112314 Random start Location X = (0.216531)(155 m) = 33.6 m Y=(0.112314)( 80m)= 9.0m Sample Spang = = 056/ = 26.8 meters 2-185

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results As a conservative measure 25 samples were collected using 19.8 meter spacing.

Supoorting Surveys Supporting survey 15(3)A, was performed for the investigation of soil contamination in vicinity of the construction debris cleanup along the Woods Road. Data point locations were judgmentally selected based on historical information and process knowledge for areas of greatest potential to contain radioactivity.

Data Summary Survey Unit 15(3)

Survey saNpes Radionuclides Mean (pCUg) Max. Value (pCUg) 15(3)A1 2 CS1 3 T 0.12 0.12 15(3)A 2 25 Cs13 7 0.38 1.05 2-186

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 15(3)

'I I j .

. . .  ;  : . 14 ., .j

. I I I

• I I I I I I t^+,I I I _ ,_

• l i l .

lLegend 0 10 20 40 Sc2 :E I I I I I I Meters

- Survey Unit 15(3)

• Soil SampleLocations l Nuoeed Local Coordinate Grid Big Rok Point Legend Cz asSummm r---uralso, 2-187 C-go

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Survey Grld Coordinate Depth Cs-137_

(x,y) (m) Activity Activity MDADAActhrity IVMDA MVMDA 15(3)A 1 16284 (9.5.5.5) 0.00-0.30 0.11 nd 0.04 and 0.22 15(3)AI 16284 (9.5.2.5) 0.00-0.30 0.12 _nd 0.05 nd 0.26 15(3)A 2 16145 (3.8,9.0) 0.00-0.15 0.36 nd 0.05 nd 025 15(3)A 2 16147 (3.6,9.0) 0.00-0.15 1.05 nd 0.08 nd 0.37 15(3)A 2 16149 (3.4,9.0) 0.00-0.15 0.30 nd 0.05 nd 024 15(3)A 2 16151 (3.2,9.0) 0.00-0.15 0.68 nd 0.05 nd 0.32 15(3)A 2 16153 (3.0,9.0) 0.00-0.15 0.44 nd 0.05 nd 025 15(3)A 2 16155 (2.8,9.0) 0.00-0.15 0.41 nd 0.05 nd 0.22 15(3)A 2 16157 (2.6.9.0) 0.00-0.15 0.66 nd 0.03 nd 0.22 15(3)A 2 16283 (2.6.8.8) 0.00-0.15 0.32 nd 0.04 nd 023 15(3)A 2 16281 (2.8,8.8) 0.00-0.15 0.17 nd 0.04 nd 027 15(3)A 2 16279 (3.0,8.8) 0.00-0.15 0.61 nd 0.06 nd 0.29 15(3)A 2 16277 (3.2,8.8) 0.00-0.15 0.48 nd 0.05 nd 029 15(3)A2 16275 (3.4,8.8) 0.00-0.15 0.52 nd 0.06 nd 0.33 15(3)A 2 16273 (3.6,8.8) 0.00-0.15 OA8 nd 0.05 nd 025 15(3)A 2 16271 (3.8,8.8) 0.00-0.15 0.29 nd 0.06 nd 025 15(3)A 2 16397 (3.8,8.6) 0.00-0.15 0.54 nd 0.06 nd 026 15(3)A 2 18399 (3.6,8.6) 0.00-0.15 0.12 nd 0.06 nd 0.17 15(3)A 2 16401 (3.4,8.6) 0.00-0.15 0.12 Nd 0.05 nd 0.24 15(3)A 2 16403 (32.8.6) 0.00-0.15 0.26 Nd 0.06 nd 0.17 15(3)A 2 16405 (3.0.8.6) 0.00-0.15 0.92 Nd 0.05 nd 0.34 15(3)A 2 16407 (2.8,8.6) 0.00-0.15 0.25 Nd 0.05 nd 028 15(3)A 2 16409 (2.6,8.6) 0.00-0.15 0.09 Nd 0.06 nd 0.23 15(3)A 2 16529 (3.2,8.4) 0.00-0.15 0.11 Nd 0.04 nd 0.20 15(3)A 2 16527 (3.4,8.4) 0.00-0.15 0.12 Nd 0.04 nd 0.20 15(3)A 2 16525 (3.6,8.4) j0.0O0-.15 0.10 Nd 0.05 nd 0.23 15(3)A 2 16523 (3.8,8.4) 0.00-0.15 0.07 Nd 0.04 nd 0.22

'nd Indicates non detect, MDA provided b No entry in the MDA column is provided when residual radioactvty isdetected 2-188

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 15(4)

DescriDtion Survey Unit 15(4) is an area of approximately 11,000 m2 west of the Protected Area that parallels the shoreline south of Survey Unit 14. The Woods Road terminates in the central portion of this survey unit. Subsurface structures and components include the footings and foundation slab of the former weather station tower.

History The Woods Road is an unimproved lane that provided access to the former weather station tower located in this survey unit. The tower, in use until 1963, was subsequently dismantled and all that currently remains are the footings and foundation slab.

An area of the Woods Road within this survey unit was once used for the storage of construction debris and miscellaneous refuse. Cleanup efforts have resulted in the removal of all materials from this area. Radiological surveys conducted during this removal process did not identify residual radioactivity in construction debris or area soils.

Radiological Status Residual radioactivity was not identified in any sample collected in this survey unit above established background levels. The radiological status of Survey Unit 15(4) is Class 3.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pC!g) 0.21 Standard Deviation (a) 0.07 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

RelativeShift= DCGL-LBGR = 5.11-2.5 CT 0.07 With a and 1error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 190 x 100 meters Random Numbers 0.91 9787, 0.607572 Random start Location X = (0.919787)(190 m) = 174.8 m 2-189

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Y = (0.607572)(100 m) = 60.8 m Sample Spacing L= F YN = iF95Y4 =27.9 meters As a conservative measure 25 samples were collected using 20 meter spacing.

Sunporting Surveys Supporting survey 15(4)AI was performed for the investigation of soil contamination in vicinity of the construction debris cleanup along the Woods Road. Data point locations were judgmentally selected based on historical information and process knowledge for areas of greatest potential to contain radioactivity.

Data Summary Survey Unit 15(4)

Survey No. of Samples Radionuclides Mean (pCvg) Max. Value (pCUg) 15(4)A1 9 CS137 0.16 0.64 15(4)A 2 25 Cs1 37 0.23 0.43 2-190

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 15(4) 0 15 30 60 Land I I II I I Me/en

- Jrv"U.y , ) [ e i

. ;i 0

• W_S. Locsnc Big Rook Point

-"sa impactd Ara Noith Legend i Weds .l m Uw ^_

A.. ,

2-191 C-9(

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Survey Grid Coordinate Depth Cs-I 37 Co-60 Am-241 (x,y) Activity MDA ActivIty MDA Activity MDA 15(4)AI 16390 (2.5,4.5) 0.00-0.15 0.03 nd 0.05 nd 0.24 15(4)Ai 16326 (2.5 7. 0.00-0.15 0.12 nd 0.06 nd 0.23 15(4)A, 16388 (2.5,4.5) 0.00-0.15 0.09 nd 0.05 nd 0.22 15(4)A, 16452 (2.5,4.5) 0.00-0.15 0.64 nd 0.09 nd 0.36 15(4)AI 16389 (2.5,3.5) 0.00-0.15 0.11 nd 0.06 nd 0.22 15(4)A, 16389 (3.5,4.5) 0.00-0.15 0.05 nd 0.05 nd 0.22 15(4)A, 16389 (2.5,5.5) 0.00-0.15 0.16 nd 0.06 nd 0.28 15(4)A, 16389 (1.5,4.5) 0.00-0.15 0.08 nd 0.05 nd 0.20 15(4)AI 16389 (2.5,4.5) 0.00-0.15 0.17 nd 0.06 nd 0.25 15(4)A2 16520 (4.8,0.8) 0.00-0.15 0.13 __ nd 0.04 nd 0.21 15(4)A2 16394 (4.8,0.8) 0.00-0.15 0.13 nd 0.03 nd 0.17 15(4)A 2 16268 (4.8,0.8) 0.O0-0.15 0.29 nd 0.05 nd 0.26 15(4)A 2 16266 (4.8,0.8) 0.00-0.15 0.43 nd 0.06 nd 025 15(4)A2 16392 (4.8,0.8) 0.00-0.15 0.31 nd 0.06 nd 0.25 15(4)A2 16518 (4.8,0.8) 0.00-0.15 0.09 nd 0.05 nd 020 15(4)A 2 16516 (4.8,0.8) 0.00-0.15 0.32 nd 0.06 nd 0.25 15(4)A 2 16390 (4.8,0.8) 0.00-0.15 0.28 nd 0.05 nd 0.21 15(4)A 2 16264 (4.8.0.8) 0.00-0.15 0.09 nd 0.03 nd 0.20 15(4)A 2 16262 (4.8,0.8) 0.00-0.15 0.12 nd 0.04 nd 0.22 15(4)A 2 16388 (4.8.0.8) 0.00-0.15 0.10 nd 0.05 nd 0.23 15(4)A2 16514 (4.8,0.8) 0.00-0.15 0.42 nd 0.05 nd 0.27 15(4)A 2 16640 (4.8,0.8) 0.00-0.15 0.14 nd 0.04 nd 0.23 15(4)A 2 16638 (4.8,0.8) 0.00-0.15 0.12 nd 0.05 nd 0.22 15(4)A2 16512 (4.8,0.8) 0.00-0.15 0.29 nd 0.05 nd 0.29 15(4)A2 16386 (4.8,0.8) 0.00-0.15 0.14 nd 0.05 nd 0.26 15(4)A 2 16260 (4.8,0.8) 0.00-0.15 0.29 nd 0.07 nd 0.25 15(4)A2 16258 (4.8,0.8) 0.00-0.15 0.16 nd 0.05 nd 0.24 15(4)A2 16384 (4.8,0.8) 0.00-0.15 0.18 nd 0.05 nd 0.23 15(4)A 2 16510 (4.8,0.8) 0.00-0.15 0.38 nd 0.06 nd 0.28 15(4)A2 16382 (4.8,0.8) 0.00-0.15 0.32 nd 0.06 nd 0.30 15(4)A 2 16256 (4.8.0.8) 0.00-0.15 0.23 nd 0.04 nd 0.24 15(4)A2 16254 (4.8,0.8) 0.00-0.15 0.10 nd 0.06 nd 020 15(4)A2 16143 (6.2,7.0) 0.00-0.15 0.32 nd 0.05 nd 028 15(4)A2 16198 (9.5,1.5) 0.00-0.15 0.41 nd 0.05 nd 027 nd Indicates non detect, MDA provided b No entry in the MDA column Is provided when residual radioacivity Is detected 2-192

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Survey Unit 16 Description Survey Unit 16 is located immediately east of the discharge canal and encompasses approximately 8300 m2 of Lake Michigan shore area from the waters edge to the tree line.

Vehicle barricades traverse this survey unit approximately 23 meters east of the security fence.

Subsurface structures and components have not been identified in this area.

History Asphalt, concrete, and other construction rubble were once visible in a localized area along the waters edge in this survey unit. The material is believed to be early construction debris left in place as rip-rap protection against shoreline erosion. This area was investigated for the potential presence of buried man-made material. Radiological surveys were conducted and these materials were excavated and removed from the area. Residual radioactivity was not identified in any excavated soil or debris removed from the shoreline.

Radioloaical Status Due to near-record lows in Lake Michigan water level, additional shoreline us exposed for surveys conducted in this area. The location of this survey unit is east of the plant discharge canal where licensed radioactive liquid release occurred; the levels of radionuclides identified in these surveys is consistent with expectations for sediment migration that would result from wind, current, and wave action along the shoreline. The radiological status of this survey unit is Class 2.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-1 37 Co-60 Mn-54 Mean value (pClg) 0.32 0.11 0.04 Standard Deviation (ca) 0.19 0.04 0.02 Applying the Unity Rule,

-r s + o 12 12 5.1 1 Cs 4.99Co) + 4 7 4 MnJ 2 2 2 0.19 J 0.04 j 4 0.01 l 1 1 CS 5 4 99Co 4 7 4 Mn) a =0.04 For the Unity Rule, the DCGL for the weighted sum is 1. The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

2-193

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Relative Shift = DCGL-LBGR 1-o.5 = 12.5 a 0.04 With a and P error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

2. Sample Locations Sample locations were systematically selected in a random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 140 x 60 meters Random Numbers 0.845432, 0.201667 Random Start Location X = (0.845432)(140 m) = 118.4 meters Y = (0.201667)( 60 m) = 12.1 meters Sample Spacing L = V N = 40%14 = 24.3 meters As a conservative measure 22 samples were collected using 20.5 meter spacing.

Sunporting Surveys No supporting surveys were conducted in this area.

Data Summarv Survey Unit 16 Survey No. of Samples Radlonuclides* Mean (pCllg) Max. Value (pCIfg) 16A 1 22 CS137 0.41 1.38 IICW 0.10 0.13

• nd indicated no detected

• • Activity Identified In 3 samples only.

2-194

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 16 0 10 20 40 Legend S, I I a I Mer Fig ME v.SmA'sL

• S

' b1 LOSC Cc h.W -a Big Rock Point Impnactd Am North

=6;usm Legend

- Du.a to 2-195

(-92

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Coordinate Depth Cs-137 Co-0g Am-241 p1 CiggL(R Survey)Grid (IDC S(xy) (i) ity MDA Activity IViDA Activity MDA I6A 1 17151 (8.9,2.1) 0.00-0.15 0.53 nd 0.06 nd 024 16A 1 17149 (8.9,2.6) 0.00-0.15 0.09 nd 0.06 nd 0.22 16A 1 17147 (8.9,3.1) 0.00-0.15 0.28 nd 0.07 nd 0.27 16A 1 17134 (8.4,2.1) 0.00-0.15 0.55 nd 0.07 nd 0.28 16A 1 17136 (8.4,2.6) 0.00-0.15 0.06 nd 0.08 nd 0.30 16A 1 17138 (8.4,3.1) 0.00-0.15 0.24 0.10 nd 0.30 16A 1 599 (7.9,2.1) 0.00-0.15 1.15 nd 0.07 nd 0.27 16A 1 17125 (7.9,2.6) 0.00-0.15 0.06 nd 0.06 nd 0.29 16A 1 17123 (7.9,3.1) 0.00-0.15 029 nd 0.07 nd 0.29 16A 1 610 (7.4,2.1) 0.00-0.15 1.38 nd 0.06 nd 0.27 16A 1 17117 (7.4,2.6) 0.00-0.15 0.09 nd 0.06 nd 0.26 16A 1 17115 (7.4,3.1) 0.00-0.15 0.79 0.07 nd 0.24 16Ai 17287 (7.4,3.6) 0.00-0.15 0.11 nd 0.07 nd 0.22 16A, 608 (6.9,2.1) 0.00-0.15 0.98 nd 0.06 nd 0.29 16A 1 17104 (6.9,2.6) 0.00-0.15 0.09 nd 0.07 nd 0.26 00-l1 0.12 q 0.12 I

V

- I

.4

-I&

- lvA1l

- 47411Y I Iw-vv I 1A a 3 1) f.00m015

_._ _. ._ no u.ut nM u.&W l6A1 17288 (6.9,3.6) 0.00-0.15 0.75 nd 0.08 nd 0.32 16A 1 52 (6.4,2.1) 0.00-0.15 0.32 nd 0.06 nd 0.26 16A. 91 (6.4,2.6) 0.00-0.15 0.42 _ _ 0.13 nd 0.28 16A 1 17274 (6.4,3.1) 0.00-0.15 nd 0.05 nd 0.07 nd 0.32 16A1 67 (5.9,2.1) 0.00-0.15 0.19 I I nd 0.05 nd 0.28 16A 1 107 (5.9,2.6) 0.00-0.15 0.07 1 1 nd 0.07 rnd 0.25

• nd Indicates non detect, MDA providea b No entry In the MDA column is provided when residual radioactivity Is detected 2-196

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Survey Unit 17 Description Survey Unit 17 is an area of approximately 256,500 m2 located in the southeast quadrant of the Impacted area along the southern boundary of Survey Units 13 and 16. This area is primarily woodland; however, the following buildings and structures are located in the western quarter of the survey unit:

• Well House,

• Security Building,

• South Warehouse,

• Annex Building, and

• Portable Office Buildings.

The Big Rock Point access road and the former 138kv power easement traverse Survey Unit 17 from US Route 31 to the Industrial Area. The Big Rock Point access road provides paved access to the plant parking area located next to the Security Building. Subsurface structures and components include storm drains, conduit, Well Water System piping, and building foundations.

History The power-line right of way was used as a storage location for large volumes of discarded concrete and asphalt rubble, structural steel, and other miscellaneous construction debris. An investigation of this area was conducted and all materials have been removed. Residual radioactivity was not identified in any construction debris or contact soil in this investigation.

The paved area adjacent to the security building was occasionally used as a transport route for the movement radioactive material from the plant main gate to the Radwaste Building.

Storm-drain piping originating from the Protected Area passes through a small section of Survey Unit 17 adjacent to the northeast section of the plant fence. Trace levels of residual radioactivity have been identified in the sediment of connecting storm drain piping within the Protected Area.

The entire length of this piping system has been decontaminated and is currently monitored on a routine basis by Radiation Protection personnel.

Two areas along the former power-ine easement have been established for the storage and staging of demolition debris. These materials have met the radiological criteria for staging prior to final evaluation and shipment to a Type 11landfill. These areas are known as Quality Verification Areaso (QVA).

Radiological Status Residual radioactivity identified in this survey unit are consistent with established backgound levels. The radiological status of Survey Unit 17 is Class 3. Areas within this survey unit may be upgraded In classification due to future requirements for additional lay-down and staging locations during large scale structure demolition. Characterization surveys are scheduled to continue as buildings and components are dismantled and removed from the site.

2-197

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCig) 0.50 Standard Deviation (a) 0.40 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift= DCGL-LBGR - 5.11-2.5 a 0.40 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points. As a conservative measure 20 samples were collected for this survey.

2. Sample Locations Sample locations were selected by random method Bounding survey unit dimensions 780 x 400 meters.

Random numbers were generated and applied to bounding survey unit dimensions to determine data point coordinate locations. This process was continued until 20 sample point locations successfully fell within the survey unit.

Supporting Surveys Supporting surveys 17A 2 and 17A 3 were conducted for the radiological evaluation of soil prior to construction of the new Security Building located on the BRP Access Road. Survey 17Ap,was performed for the investigation of residual radioactivity in vicinity of the construction storage location on the power-line easement. Data point locations were judgmentally selected for areas of greatest potential to contain radioactivity based on historical information and process knowledge.

Data Summarv Survey Unit 17 Survey No. of Radionuclide Mean (pCl~g) Max. Value (pClig) 17A, 20 CS1 3 7 0.57 1.59 17A2 5 Cs137 0.38 0.48 17A3 3 Cs137 0.06 0.06 17AF, 7 CS137 0.53 1.43 2-198

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Survey Unit 17 0 w 120 240

&AN , I Big Rock Point Impacted Ar. Nofth Legend kAd - 01C

_,A sm s.

wau

• up a &nqUiala C - Z3 2-199

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Survey Results Grid Coordinate Cs-137 Co-60 Am-241 Survey (x-y) Depth (i R) (pC g) (pCU)

(XLngitude ,YLatltde) (m) Activity *UDA D Activity a MDA ACtivity MDA 17A2 17346 (5.5,5-0) 0.00-0.15 0.32 lnd 0.07 nd 0.38 17A2 17347 (2.0.7.5) 0.00-0.15 0.45 nd 0.07 nd 0.30 17A2 17347 (9.0,9.5) 0.00-0.15 0.48 nd 0.06 nd 0.32 17A2 17349 (4.5,1.0) 0.00-0.15 0.38 nd 0.07 nd 0.32 17A2 17351 (0.0,1.5) 0.00-0.15 0.28 nd 0.03 _ nd 0.23 17A3 17343 (9.0.9.0L 0.00-2.00 ind 0.06 nd 0.05 nd 0.26 17A3 17344 (5.5.2.0) 0.00-2.00 nd 0.05 nd 0.06 nd 0.24 17A3 17348 (8.5,3.0) 0.00-2.00 0.06 nd 0.05 nd 0.25 17Apt N45°21;258.0", 0.00-0.15 0.40 nd 0.06 nd 0.30 17Ap, N45° 21' 27.38 0.00-0.15 14 = nd 0.06 nd 0.28 17Al W5 11' ° 12.2" 0.00-0.15 0.42 nd 0.06 nd 0.28 N45 21' 27.8",

17Ap_ W85 I19."

11' 0.00-0.15 0.43 nd 0.04 nd 0.32 N45 0 21'27 9".43 0.00-0.15 17A, 17A ,1 N45W21'273 ,o"i 0.00-0.15 0.49 nd 0.07 nd 0.30 17A1~ N45 0 0 21' 2871. 1 061 rid d 0.31 17A1_ W85 11'26.4" 0.00-0.15 0.61 nd 0.07 nd 0.31 17A 1 17A N45 N45I1 , I.0018"

°21';3.6" W85 0 11'36.4"___ 0.00-0.1. 0.14 0.08_____

ndnd 0.0

'O.OS r nd nd 0.26 0.32 17A1 N45°21;31.5" I0.15 OA8 nd 0.05 nd 0.38 AW85 11'° 20.8 0.00-0.15 0.4 rd 0.08 rd 0.3 0

17A1 N45 W85 021 31.9 1 1'370" 0.00-0.15 _______

0.08 nd 0.05 nd 0.27 17A N45 0 21' 29.5 0.00-0.15 0.30 nd 0.04 nd 0.30 W85 11'° 1j__0n..

17A 1 N45 21° 32.72 0.00-0.15 0.45 nd 0.06 nd 0.32 W85 11' 244"____ ___

17A, N45°21'34.1" 0.00-0.15 0.66 nd 0.07 nd 0.35 IM 17A 1 W85 0 11'33.6" W85 °1;'

03.8 0.00-0.15 0.61 nd 0.07 nd 0.35 0

17A N45 W85 021' 11I'33.'9"I 12.5. 00-.5 0.001 OSn 04 0.05 rid 0.29 17Ai N45021'2f416 0.O.0-0.15 0.76 rid 0.09 rid 0.36 1?i W4-5 0 1'62. 13 1" 0.001 .1rd 0.08 rid 0.42 171 W85 0 11'135". 0.00-0.15 0.54 i1.5 rd03 I 7A, .00.5 04 ri"13.r d 0.06 rid 0.31 l7Ai N45 0 21'36.r7"

____ W85 11I'14.1 ff 0.00-0.15 0.92 rid 0.06 rid 0.26 0

17A N45 021'27.5". 0.00-0.15 0.54 rid 0.06 rid 0.29

______ ~W 85 1 1'21.6! _ _ _ _ _ _ _ _ _ _ _ _

17A 1 N45*21'29.1m" 00-.5 06 d 00 d02 W85 0 11' 35.4 0.0015 06 id 00Ird 02 2-200

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results S Grid Coordinate Depth Cs-137 Co-60 Am-241 Survey (xy) (m) (PC ) (PC ) (p CVU)A (XLoV)We .Yuflude) (in) ity* MDAD Activity MDA Activity MD 17A, N45:21;28.3- 0.00-0.15 0.44 lnd 0.07 nd 0.37

____ W845°1;1'340.5 0.00-0.15 1.59 nd 0.10 nd 0.41 17A W85 11' 13.0" 0.00-0.15 0.32 nd 0.05 nd 0.29 17A 1 N45 0 21'

_______ W 85 11' 302 35.10" _

0.00-0.15 091 _

nd 0.08 nd 0.41

_ _ N45°021'271.1; 0.00-0.15 0.20 nd 0.05 nd 0.27 17A N45° W85 21'1' 34.2" 06.6" 0.00-0.15 0.92 nd 0.07 nd 0.38

• ii-nd te s non detect, MDA provided bNo entry Inthe MDA column Is provided when residual radioactivity is detected 2-201

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 18 Description Survey Unit 18 is an area of approximately 84,000 m2 located west of the Protected Area.

There are no structures, components, and systems in this survey unit.

Historv This outlying area has remained remote from normal plant operational activities. The HSA designates this area to be unlikely to contain residual radioactivity.

Radiolooical Status Residual radioactivity in soils in this survey unit are consistent with established background levels. The radiological status of Survey Unit 17 is Class 3 due to its proximity to other Class 2 Areas.

Primary Survey Design

1. Sample Data Points Required The scoping survey resulted in the following data:

Nudide identification Cs-1 37 Mean value (pCi/g) 0.50 Standard Deviation (a) 0.40 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR = 5.11-2.5 CY 0.40 With a and , error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points. As a conservative measure 20 samples were collected for this survey.

2. Sample Locations Sample locations were selected by random method Bounding survey unit dimensions 330 x 375 meters. Random numbers were generated and applied to bounding survey unit dimensions to determine data point coordinate locations. This process was continued until 20 sample point locations successfully fell within the survey unit.

SuDporting Surveys Supporting surveys were not conducted in this area..

2-202

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Data Summarw Survey Unit 18A 2-203

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results N

0 60 120 240 5 I i I I , ,, n Metr Big Rock Point Legend or*ysu-C _!n

~- - m..

2-204 C-1f

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results -

Survey Results Survye Coordinate Cs-137 Co-60 Am-241 ry (%LoWet .Yide) (pC~)(C9 (pC9 ActivityJ MDA MDA Actvity GiviWF MDA 18A 1 N45 2129.8", W85 11'55.9" 0A8 nd 0.06 nd 0.32 18A 1 N45 21'37.3", W85 11'54.9" 0.51 nd 0.06 nd 0.28 18A 1 N45 21'33.5", W85 11'51.4 0.53 nd 0.06 nd 0.39 18A1 N45 21'36.2". W85 11'52.4" 0.48 _ nd 0.07 nd 0.30 18A 1 N45 21'37.r, W85 11'56.1- 0.49 nd 0.06 nd 0.26 18A 1 N45 21'29.i", W85 11'57.5" 0.31 nd 0.06 nd 0.34 18A 1 N45 21'38.6",W85 1159.9" 0.50 nd 0.07 nd 0.31 18A 1 N45 21'31., W85 11'54.6" 1.00 nd 0.09 nd 0.43 I8A1 N45 21'33.8", W85 11'54.5" 0.60 nd 0.05 nd 0.24 18At N45 21'36.3". W85 11V53.1" 0.55 nd 0.06 nd 0.26 18A1 N45 21'32.5", W85 11'53.0" 0.37 nd 0.05 nd 0.27 18A1 N45 21'32.5", W85 I1'58.8" 0.82 nd 0.07 nd 0.37 18A1 N45 21V32.r, W85 1'49.5" 0.93 =nd 0.08 nd 0.41 18A 1 N45 21'30.2", W85 11'57.8" 0.47 nd 0.06 nd 0.34 ISA1 N45 21'28.3", W85 11'59.2" 0.74 nd 0.08 nd .OA3 ISA1 N45 21'31.3", W85 11'51.5" 0.53 nd 0.06 nd 0.31 18A1 N45 21'32.4". W85 11'52.8" 0.60 nd 0.06 nd 0.40 18A 1 N45 21'29.9, W85 11'55.8" 0.75 nd 0.08 nd 0.35 ISA1 N45 2129.9". N85 11'56.9m 0.93 nd 0.09 nd 0.34 18A1 N45 21'32.0", W85 1V58.9" 0.35 nd 0.07 nd 0.34 nd Indiates non detect, MDA provided b No entry Inthe MDA column Isprovided when residual radioactivity Isdetected

. Table format not consistent with others (grid, depth??)

2-205

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 19 Description Survey Unit 19 is an area of approximately 12,000 m2 located directly south of the Protected Area. A large portion of this location has been paved to support the transport of materials to the Radwaste Storage Building located in Survey Unit 11. The Radwaste Office Building and plant substation located in the northern section of this survey unit were both constructed subsequent to final plant shut-down. Subsurface structures and components include substation footings, storm drain piping, groundwater monitoring wells, station power conduit, and electronic communication wiring.

History This area was used as a transport and staging location for the movement of radioactive materials to the Radwaste Building. A road construction project was conducted following final plant shutdown to pave areas north of the Radwaste Building and construct a roadway to the ISFSI storage facility for spent fuel transport. Surveys conducted prior to road construction in these areas did not identify residual radioactivity in soil above established background levels.

Radiological Status Residual radioactivity was not identified above established background levels in any survey conducted in this area. The radiological status of Survey Unit 19 is Class 2. Further characterization of this area is scheduled to continue as systems and structures are removed from the site.

Primarv Survey Design The first characterization surveys performed following cessation of power operations were conducted to investigate areas scheduled for construction (trenching, excavation, road surfacing) prior to soil disturbance. Initial surveys performed in Survey Unit 19 were conducted to support paving of the transport route north of the Radwaste Building and construction of the spent fuel roadway to the ISFSI facility. Due to sampling limitations resulting from accessibility, subsurface obstruction, and electrical hazards in northern portions of this survey unit, primary surveys were conducted by the following two methods:

1. Survey Design, Sections North And West In-Situ measurements were performed in 100 m2 increments in all accessible areas.

Soil samples were collected for laboratory analysis and confirmation of contaminant homogeneity. Survey results for In-Situ measurements and corresponding soil analyses are presented by survey grid location In Table 2.

2. Survey Design, Sections South And East Area evaluation performed by soil sampling and laboratory analysis. Sample size and data point locations were based on NUREG-1575 guidance.

2-206

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results

a. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification C-137 Mean value (pCig) 0.52 Standard Deviation (a) 0.48 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift DCGL-LBGR = 5.11-2.5 = 5.45 a 0.48 With a and p error levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points.

b. Sample Locations Sample locations were systematically selected in random start, square grid pattern with the southwest comer of the survey unit as origin.

Bounding survey unit dimensions 80 X 130 meters Random Numbers 0.694949, 0.979969 Random Start Location X = (0.694949)( 80 m) = 55.6 m Y = (0. 979969)(130 m) = 127.4 m Sample Spacing L = VT N = 560014 = 20.0 m As a conservative measure 25 samples were collected using 15 meter spacing.

Soil analyses for all samples collected in the south and east sections Survey Unit 19 are summarized by survey in Tablel.

2-207

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results Survorting Surveys Surveys were conducted prior to construction in areas scheduled for fiber optics installation, storm drain modification, and erection of the plant substation.

Data Summary Survey Unit 19 Survey No. of Samples Radionuclides*

Rdoulds Mean(pCi/9) en(~l) Max.

Mx Value au (pCi/g) pig 19A, 79 Cs137 0.18 0.45 19A 2 26 Cs137 0.15 0.31 CS137 0.61 1.10 19A 3 25 ***Co 0.12 0.12 19Aculvert conneron 4 Cs137 0.22 0.35 19Adeewcore 2 nd __ _

19Atd 15 nd

• nd - non detect

• • td - trenching and digging surveys

• • • Co.60 identified in one sample only 2-208

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results N

Survey Unit 19 284 637 538 286 76 477 286 WiO 6128 287 233 278 l 12-3124 146 8129 613 8143 17288 145 s814 157 8788 6165 Om6 227 6232 228 6229 239 6238 240 8237 a" , 8266 I vs. 7327

_~, 17329 7328 17330 Legend 0 10 20 40 m SuwveyUn8 IS I NumberedLocalCoodiat Quid faitL I I I I I I I Meters

=]uldifgs and Sluctur

• SoilSampe Localons Big Rock Point Legend hkpcd Ad As Lhdnkipaed Areas C-15 2-209

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results Survey Results - Table 1 Surve C Grid Coordinate Depth Cs-1 37 Co-60 Am-241 SuvYc Gi (x,y)() (pCi/9) (p i/g) (p i/g)

Activity a MDA Activity a MDA Activity MDA 19A, 401 (2.5,7.5) 0.00-0.15 nd 0.10 nd 0.08 nd 0.19 19A 1 402 (5.0,1.5) 0.00-0.15 nd 0.11 nd 0.10 nd 0.20 19A, 402 (6.0,7.5) 0.00-0.15 nd 0.08 nd 0.10 nd 0.16 19A1 402 (2.5,2.5) 0.00-0.15 0.31 nd 0.12 nd 0.20 19A1 402 (2.5,6.0) 0.00-0.15 0.45 nd 0.16 nd 0.20 19A, 418 (5.0,8.5) 0.00-0.15 0.14 nd 0.11 nd 0.22 19A, 418 (5.0,1.5) 0.00-0.15 nd 0.14 nd 0.17 nd 0.25 19A1 418 (5.0,1.5) 0.15-0.30 nd 0.10 nd 0.06 nd 0.21 19A1 289 (5.0,8.5) 0.00-0.15 nd 0.09 nd 0.10 nd 0.24 19Ak 6149 (4.5,8.5) 0.00-0.15 nd 0.14 nd 0.10 nd 0.21 19gA 438 (2.5,2.5) 0.00-0.15 0.27 nd 0.07 nd 0.20 19A 1 438 (7.5,2.5) 0.00-0.15 nd 0.09 nd 0.08 nd 0.17 19A, 438 (2.5,7.5) 0.00-0.15 0.07 nd 0.08 nd 0.16 19A1 438 (7.5,7.5) 0.00-0.15 nd 0.09 nd 0.08 nd 0.17 19A, 433 (2.5,2.5) 0.00-0.15 nd 0.09 nd 0.06 nd 0.16 19A, 433 (7.5,2.5) 0.00-0.15 nd 0.07 nd 0.07 nd 0.15 19A, 433 (2.5,7.5) 0.00-0.15 0.24 nd 0.12 nd 0.16 19A, 433 (2.5,7.5) 0.15-0.30 0.07 nd 0.02 nd 0.17 19Ai 433 (7.5,7.5) 0.00-0.15 nd 0.07 nd 0.07 nd 0.16 19A, 443 (2.5,1.5) 0.00-0.15 0.17 nd 0.12 nd 0.19 19A, 443 (6.0,1.5) 0.00-0.15 0.12 nd 0.11 nd 0.19 19A, 443 (6.0,1.5) 0.15-0.30 0.12 nd 0.12 0.21 19Ak 443 (3.0,8.0) 0.00-0.15 0.24 nd 0.11 nd 0.17 19A, 443 (7.5,8.0) 0.00-0.15 0.20 nd 0.13 nd 0.16 19A, 448 (7.5,7.5) 0.00-0.15 nd 0.06 nd 0.07 nd 0.17 19A, 453 (2.5,2.5) 0.00-0.15 nd 0.09 nd 0.1 nd 0.17 19A 1 453 (7.5,2.5) 0.00-0.15 nd 0.12 nd 0.16 nd 0.17 19A, 453 (2.5,7.5) 0.00-0.15 0.16 nd 0.10 nd 0.18 19A1 453 (7.5,7.5) 0.00-0.15 0.12 nd 0.10 nd 0.19 19,A 453 (7.5,7.5) 0.15-0.30 0.17 nd 0.10 nd 0.22 19A1 458 (2.5,7.5) 0.00-0.15 0.11 nd 0.11 nd 0.17 19A1 439 (2.5,2.5) 0.00-0.15 0.32 _nd 0.03 nd 0.23 19A1 439 (7.5,2.5) 0.00-0.15 nd 0.05 nd 0.07 nd 0.18 19Ai 439 (2.5,7.5) 0.00-0.15 0.23 nd 0.06 nd 0.25 19A, 439 (7.5,7.5) 0.00-0.15 nd 0.04 nd 0.04 nd 0.21 19A. 434 (2.5,2.5) 0.00-0.15 0.09 nd 0.04 nd 0.18 19A, 434 (2.5,7.5) 0.00-0.15 nd 0.07 nd 0.07 nd 0.18 19k, 440 (2.5,2.5) 0.00-0.15 0.14 nd 0.03 nd 0.23 19A1 440 (7.5,2.5) 0.00-0.15 0.02 nd 0.03 nd 0.21 19k, 440 (2.5,7.5) 0.00-0.15 0.23 nd 0.07 nd 0.26 2-210

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Coordinate Depth Cs-137 Co-60 Am-241 SurveyO Grid (x,y) (m) (PC ) (pCiil) (pC Activity MDA Activity MDA Activity MDA 19A, 440 (7.5,7.5) 0.00-0.15 nd 0.09 nd 0.06 nd 0.18 MlA, 435 (2.5,2.5) 0.00-0.15 0.05 nd 0.04 nd 023 19A, 435 (2.5.7.5) 0.00-0.15 0.14 nd 0.08 nd 0.18 19A1 441 (2.5.2.5) 0.00-0.15 0.25 nd 0.05 nd 027 IDAi 441 (7.5,2.5) 0.00-0.15 nd 0.09 nd 0.07 nd 0.14 19A1 441 (2.5.7.5) 0.00-0.15 0.20 nd 0.09 nd 021 19A1 441 (7.5,7.5) 0.00-0.15 nd 0.07 nd 0.07 nd 0.14 19A 1 436 (2.5,2.5) 0.00-0.15 nd 0.08 nd 0.08 nd 0.15 1MAl 436 (2.5,7.5) 0.00.0.15 0.19 nd 0.07 nd 0.15 19A1 442 (2.5,2.5) 0.00-0.15 0.36 nd 0.12 rid 02 19kA 442 (2.5,2.5) 0.15-0.30 026 nd 0.14 nd 0.19 10A 442 (7.5,2.5) 0.00-0.15 nd 0.08 nd 0.11 nd 0.19 1A1 442 (2.5,7.5) 0.00-0.15 0.13 nd 0.11 nd 0.22 19k, 442 (7.5.7.5) 0.00-0.15 nd 0.08 nd 0.08 nd 0.17 1A1 437 (2.5,2.5) 0.00-0.15 nd 0.07 nd 0.08 nd 0.18 10A, 437 (2.5,7.5) 0.00-0.15 nd 0.06 nd 0.07 nd 0.18 IA, 426 (2.52.5) 0.00-0.15 0.28 nd 0.04 nd 0.23 1DAi 426 (7.5,2.5) 0.00-.15 nd 0.08 nd 0.12 nd 0.18

'. , i , . ^£ W VP n%nrwnA nU. ndm 0.08D nal O.-Z1

- . W1Ai 41Zb (z-A tDIO U.WU-.l-vI ,&

w.....__.

IA, 426 (7.5,7.5) 0.00-0.15 nd 0.04 nd 0.04 nd 023 1iA, 427 (2.5,2.5) 0.00-0.15 nd 0.06 nd 0.07 nd 0.13 1A, 427 (2.5,7.5) 0.00-0.15 0.02 nd 0.03 nd 0.19 19GA 6107 (2.5,2.5) 0.00-0.15 nd 0.13 nd 0.09 nd 0.20 IGA1 6107 (7.5,2.5) 0.00-0.15 nd 0.10 nd 0.11 nd 0.21 MiA1 6107 (2.5,7.5) 0.00-0.15 0.09 nd 0.13 rid 0.22 19kA 6107 (7.5,7.5) 0.00-0.15 nd 0.06 nd 0.02 nd 0.15 1MAl 589 (2.5.2.5) 0.00-0.15 nd 0.05 nd 0.09 nd 0.17 IMAA 589 (7.5.2.5) O.00-0.15 nd 0.06 nd 0.09 nd 0.19 1A, 589 (2.5.7.5) 0.00-0.15 rid 0.06 nd 0.08 nd 0.20 19A, 589 (7.5.7.5) 0.00-0.15 nd 0.03 nd 0.04 nd 0.20 19A, 6108 (2.5,2.5) 0.00-0.15 nd 0.10 nd 0.07 nd 0.19 19A1 6108 (7.5.2.5) 0.00-0.15 nd 0.09 nd 0.08 nd 0.21 19A, 6108 (2.5,7.5) 0.00-0.15 nd 0.13 nd 0.11 nd 0.20 MA1 6108 (7.5,7.5) 0.00-0.15 nd 0.07 rnd 0.08 nd 0.19 IgA1 590 (2.5,2.5) 0.00-0.15 nd 0.10 nd 0.09 nd 0.21 1Ai 590 (7.5,2.5) 0.00-0.15 nd 0.09 nd 0.10 nd 0.14 1IA1 590 (2.5,7.5) 0.00-0.15 0.11 nd 0.05 nd 0.26 IgA1 590 (2.5,7.5) 0.15-0.30 0.19 nd 0.07 nd 0.21 IgA1 590 (7.5,7.5) 0.00-0.15 nd 0.06 nd 0.10 nd 020 19AQ 388 (3.5.7.5) 0.00-0.15 0.11 nd 0.06 rnd 0.22

- fl -f U. A1 -. A U. EC I . 1 A.. 389 15.5.5.5) 0.00-0.15 U.ZU I no U.14o nlu W. lo 0.1 II flu U.U flu U. u I

I_

loA. I

30n 1235.5.5)

_.,L

'Z 0.00-0.15

_ . _ _._I __ 0.31

__._. no u.wU na U.10o 2-211

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Coordinate Depth Cs-137 Co-60 Am-241 Surey Grd (x,y) (m) (pCg) (PCi/g) (P /C) D Activity MDA Activity MDA Acivity MDA 1GA2 391 (2.5.5.5) 0.00-0.15 0.07 nd 0.09 nd 0.21 IDA2 392 (2.5,4.5) 0.00-0.15 nd 0.10 nd 0.13 nd 0.21 IDA2 392 (7.5.4.5) 0.00-0.15 0.25 nd 0.16 nd 0.23 1IA 2 392 (2.5.82) 0.00-0.15 0.15 nd 0.09 nd 0.17 19A2 392 (7.5,82) 0.00-0.15 0.14 nd 0.13 nd 0.18 IGA2 393 (4.5.5.5) 0.00-0.15 0.10 nd 0.13 nd 0.20 IQA2 393 (9.5,5.5) 0.00-0.15 0.11 nd 0.05 nd 0.13 19A2 394 (2.5,8.5) 0.00-0.15 0.20 nd 0.14 nd 0.19 19A2 394 (6.5.8.5) 0.00-0.15 0.13 nd 0.13 nd 0.23 19A2 382 (2.5.2.5) 0.00-0.15 nd 0.10 nd 0.07 nd 0.21 10A2 382 (7.5,2.5) 0.00-0.15 0.13 nd 0.16 nd 0.18 19A2 296 (2.5.4.5) 0.00-0.15 0.16 nd 0.12 nd 0.16 19A2 296 (7.5.4.5) 0.00-0.15 nd 0.08 nd 0.12 nd 0.19 1IA2 296 (2.5.8.5) 0.00-0.15 0.09 nd 0.11 nd 0.19 19A2 296 (7.5,8.5) 0.00-0.15 nd 0.07 nd 0.15 nd 0.15 19A2 6117 (2.5,7.5) 0.00-0.15 nd 0.09 nd 0.12 nd 0.19 19A2 6117 (7.5,7.5) 0.00-0.15 0.09 nd 0.14 nd 0.18 19A2 474 (2.5,2.5) 0.00-0.15 nd 0.10 nd 0.12 nd 0.18 I

1%

. AA-S t12.. .U A7

-. I I.. A 7 Al r

n non I s nd 0.10 nd 0.16 no u.zz 19A2 475 (2.5,1.5) 0.00-0.15 0.19 nd 0.13 nd 0.16 19Ak 475 (2.5,4.5) 0.00-0.15 nd 0.11 nd 0.13 nd 0.18 19A2 475 (2.5,7.5) 0.00-0.15 nd 0.08 nd 0.09 nd 0.16 19A2 475 (7.5,1.5) 0.00-0.15 nd 0.14 nd 0.09 nd 0.18 IDA3 394 (5.6,7.4) 0.00-0.15 0.26 nd 0.11 nd 0.42 19A3 6118 (0.6,7.4) 0.00-0.15 0.52 0.12 nd 0.28 I1Aa 406 (5.6.2.4) 0.00-0.15 0.60 nd 0.08 nd 0.31 19A 3 6119 (0.6.2.4) 0.00-0.15 0.98 nd 0.08 nd 0.37 I9A3 463 (5.6.7.4) 0.00-0.15 0.97 nd 0.09 nd 0.40 19A3 6150 (0.6.7.4) 0.00-0.15 0.55 nd 0.10 nd 0.32 19Aa 464 (5.6,2A) 0.00-0.15 0.72 nd 0.09 nd 0.36 19A3 6161 (0.6,2A) 0.00-0.15 0.86 nd 0.06 nd 0.27 19A3 466 (5.6,7.4) 0.00-0.15 0.22 nd 0.05 nd 0.24 19A3 6223 (0.6,7A) 0.00-0.15 0.83 nd 0.07 nd 0.42 10A3 467 (5.6,2.4) 0.00-0.15 1.10 nd 0.08 nd 041 19A3 6224 (0.6,2.4) 0.00-0.15 0.77 nd 0.09 nd 0.42 19A3 6114 (5.6,7A) 0.00-0.15 0.44 nd 0.08 nd 0.40 19A3 6246 (0.6,7A) O.O-0.15 0.58 nd 0.07 nd 0.36 19A3 596 (0.6,2A) 0.00-0.15 0.24 nd 0.07 nd 0.30 19A3 597 (5.6,2A) 0.00-0.15 0.59 nd 0.09 nd 0.32 10A3 592 (0.6,2A) 0.00-0.15 0.33 nd 0.06 nd 0.25 19A3 6113 (5.6,2.4) 0.00-0.15 0.86 nd 0.11 nd 0.37

\V n-40 no u.un n 1

-- - nA -

I vor- I.v-.

9)A7 v.__-_.

In A A

n nn-ns15 I 0.40

- I no U.U.4 no U.00 2-212

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E. Characterization Survey Results Survey" Grid Coordinate Depth Cs-137 Co-60 Am-241 (x,y) (m (p 2i) (pCUg) (pCVO)

_ _ Activity* MDA Activity MDA Activity MDA 19A 3 28S, 6E (0.6.7.4) 0.00-0.15 0.69 nd 0.07 nd 0.33 19A3 28S, 7E (5.6.7.4) 0.0O-0.15 0.50 nd 0.12 nd 0.36 19A3 28S, 8E (0.6.7.4) 0.00-0.15 0.50 nd 0.09 nd 0.35 1A3 28S. 1OE (5.6,7.4) 0.00-0.15 0.35 nd 0.08 nd 0.36 19A3 28S, 12E (0.6,7.4) 0.00-0.15 1.08 nd 0.08 nd OAO 19A3 6245 (3.2,5.3) 0.00-0.15 0.37 nd 0.07 nd 0.35 1Ac 401 (8.0.8.0) 0.00-0.15 0.19 nd 0.06 nd 023 19Axe 389 (7.5,4.5) 0.00-0.15 nd 0.05 nd 0.06 nd 0.23 19Axe 389 (5.5.9.5) 0.00-0.15 0.12 nd 0.06 nd 0.21 19Ae 389 (9.0.9.5) 0.00-0.15 0.35 nd 0.06 nd 0.29 19Aaepxn 400 (5.0,5.0) 0.00-1.80 nd 0.04 nd 0.03 nd 0.17 19Aa..~. 400 (5.0.5.0) 1.843.00 nd 0.03 nd 0.03 nd 0.18 19A id 385 (0.5,8.4) 0.0O-0.15 id nd a ad 10A id 385 (9.4.2.6) 0.00-0.15 nd nd dnd a I1Atd 386 (0.9,8.0) 0.00-0.15 nd and d nd d 19A 388 (5.4,0.5) 0.00-0.156d nd d nd 19A I 388 (5A,3.0) 0.00-0.15 nd rnd d nd d 19AwI 388 (5.4,5.5) 0.000.15 nd nd nd A se j r nx _i V _ -

a _ I a 1VA d 388 t0.'4,.u) U.U"U.Io na na na 19A id 397 (0.5,7.0) 0.00-0.15 nd rnd rnd a 1A td 399 (0.6.6.2) 0.00-0.15 nd rnd a nd a 1A w 400 (5A,0.5) 0.00-0.15 nd nd and 19Aw0 400 (5.4,2.0) 0.00-0.15 nd nd nd d 19Atd 400 (5.4,3.5) 0.00-0.15 nd nd nd d 19A lei 400 (5.4,6.0) 0.00-0.15 nd id nd a d

19A td 400 (5.4,7.5) 0.00.15 nd nd d nd d 19A t 400 (5.4.9.0) 0.0-.15 nd _ d nd d

• nd Indicates non detect, MDA provided b No entry In the MDA column Is provided when residual radioactivity is detected e td - trenching and digging surveys, cc - culvert connection d MDA values for samples collected during substation construction unavailable 2-213

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results - Table 2 Soil Samples Analyses Insftu Gamma Measurement Grid Coordinate Cs-137 T Co-60 Cs-)37 Co-60 Activity ' MDA Activity MDA D Activity MDA "

400 C Nd 0.34 nd 0.37 401 (2.5_7.5) nd 0.10 nd 0.08 0.20 nd 0.44 (5.0,1.5) nd 0.11 nd 0.10 Nd 0.35 nd 0.44 402 (6.0.7.5) nd 0.08 nd 0.10 (2.5,2.5) 0.31 nd 0.12 (2.5,6.0) 0.45 nd 0.16 403 _ _Nd 0.32 nd OA3 404 _ _ _

405 Nd 026 nd 0.36 412 _ Nd 0.35 nd 0.45 413 _ Nd 0.36 nd 0.48 414 _ Nd 0.38 nd 0.50 415 _ Nd 0.36 nd 0.51*

416 -

417 c nd 0.32 nd 0.46 (5.0,8.5) 0.14 nd 0.11 0.28 nd 0.40 418 (5.0,1.5) nd 0.14 nd 0.17 (5.051.5) nd 0.10 rd 0.06

________ 15-30 cm _ __ _

289 (5.0,8.5) nd 0.09 nd 0.10 nd 0.31 nd 0.34 6149 (4.5,8.5) nd 0.14 nd 0.10 nd 0.30 nd 0.30 (2.5,2.5) 027 nd 0.07 nd 0.44 nd 0.57" (7.5,2.5) nd 0.09 nd 0.08 438 (2.5,7.5) 0.07 nd 0.08 (7.5,7.5) nd 0.09 nd 0.08 (2.5,2.5) nd 0.09 nd 0.06 nd 0.42 nd 0.60" (7.5,2.r nd 0.07 nd 0.07 433 (2.5,7.5) 0.24 nd 0.12 (2.5,7.5) 0.07 nd 0.02 15 3 cm _ _ _ _ _

(7.5,7.5) nd 0.07 nd 0.07 (2.5,1.5) 0.17 0.12 nd 0.51 nd 0.72*

443 (6.0,1.5) 0.12 0.11 (6.0,1.5) 0.12 nd 0.12 (3.0,8.0) 0.24 0.11 (7.5,8.0) 0.20 0.13 448 (7.5.7.5) nd 0.06 nd 0.07 nd 0.45 0.51 0.66" (2.5.2.5) nd 0.09 nd 0.1 (7.5,2.5) nd 0.12 nd 0.16 453 (2.5,7.5) 0.16 nd 0,1 (7.5,7.5) 0.12 nd 0.1 (7.5,7.5) 0.17 nd 0.10 458 (2.5,7.5) 0.11 nd 0.11 a 439 (2.5,2.5) 0.32 nd 0.03 0.47 rd 0.66 2-214

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Soil Samples Analyses Insitu Gamma Measurement Grid Coordinate Cs-137 Co-60 Cs-137 Co-60 G g(pCi/9) (P (pL (Pci)

Activity ( MDA Activity MDA Activity MDA Activity' MDA (7.5,2.5) nd 0.05 nd 0.07 439 (2.5,7.5) 0.23 nd 0.06 (7.5,7.5) nd 0.04 nd 0.04 434 (2.5,2.5) 0.09 nd 0.04 nd 0.49 nd 0.70" (2.5,7.5) nd 0.07 nd 0.07 (2.5,2.5) 0.14 nd 0.03 nd 0.33 nd 0.48 440 (7.5,2.5) 0.02 nd 0.03 (2.5,7.5) 0.23 nd 0.07 (7.5,7.5) nd 0.09 nd 0.06 435 (2.5,2.5) 0.05 nd 0.04 nd 0.84" nd 0.93" (2.5,7.5) 0.14 nd 0.08 (2.5.2.5) 0.25 nd 0.05 nd 0.51 nd 0.70" (7.5,2.5) nd 0.09 nd 0.07 (2.5,7.5) 0.2 nd 0.09 (7.5,7.5) nd 0.07 nd 0.07 (2.5,2.5) nd 0.08 nd 0.08 d 436 (2.5,7.5) 0.19 nd 0.07 (2.5,2.5) 0.36 nd 0.12 nd 0.52" nd 0.73" (2.5,2.5) 0.26 nd 0.14 442 (7.5,2.5) nd 0.08 nd 0.11 (2.5,7.5) 0.13 nd 0.11 (7.5,7.5) nd 0.08 nd 0.08 (2.5,2.5) nd 0.07 nd 0.08 o (2.5.7.5) nd 0.06 nd 0.07 (2.5,2.5) 0.28 nd 0.04 nd 0.50 nd 0.66" 426 (7.5,2.5) nd 0.08 nd 0.12 (2.5,7.5) 0.32 nd 0.08 (7.5,7.5) nd 0.04 nd 0.04 427 (2.5,2.5) nd 0.06 nd 0.07 d (2.5,7.5) 0.02 nd 0.03 (2.5,2.5) nd 0.13 nd 0.09 nd 0.50 nd 0.65" 6107 (7.5,2.5) nd 0.10 nd 0.11 _

(2.5,7.5) 0.09 nd 0.13 (7.5,7.5) nd 0.06 nd 0.02 .

(2.5,2.5) nd 0.05 nd 0.09 nd 0.51 nd 0.66" (7.5,2.5) nd 0.06 nd 0.09 (2.5,7.5) nd 0.06 nd 0.08 (7.5,7.5) nd 0.03 nd 0.04 (2.5,2.5) nd 0.10 nd 0.07 nd 0.51 nd 0.60 6108 (7.5,2.5) nd 0.09 nd 0.08 (2.5,7.5) nd 0.13 nd 0.11 (7.5,7.5) nd 0.07 nd 0.08 2-215

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, CharacterIzation Survey Result Soil Samples Analyses Insitu Gamma Measurement Grid Coordinate Cs-137 Co-O0 Cs 37 Co-60 Gi ornae(pCVg) (pC) (p0ilg) I (pCVg)

Activity l MDA_ D Activity *___DA_ Activity MDA Activity MDA (2.5,2.5) nd 0.10 nd 0.09 nd 0.50 rnd 0.60*

(7.5,2.5) nd 0.09 nd 0.10 590 (2.5.7.5) 0.11 nd 0.05 (2.5,7.5). 0.19 nd 0.07 (7.5,7.5) nd 0.06 nd 0.10 388 (3.5,7.5) 0.11 nd 0.06 0.29 0.38 389 (5.5,5.5) 0.20 nd 0.14 0.31 0.39 390 (3.5,5.5) 0.31 nd 0.09 0.30 0.34 391 (2.5,5.5) 0.07 nd 0.09 a (2.5,4.5) nd 0.10 nd 0.13 (7.5,4.5) 0.25 nd 0.16 392 (2.5,8.2) 0.15 nd 0.09 (7.5,8.2) 0.14 nd 0.13 d (4.5,5.5) 0.10 nd 0.13 393 (9.5,5.5) 0.11 nd 0.05 (2.538.5) 0.20 nd 0.14 a 394 (6.5.8.5) 0.13 nd 0.13 (2.5.2.5) nd 0.10 nd 0.07 382 (7.5,2.5) 0.13 nd 0.16 (2.5,4.5) 0.16 nd 0.12 _

296 (7.5,4.5) nd 0.08 nd 0.12 (2.5,8.5) 0.09 nd 0.11 (7.5,8.5) nd 0.07 nd 0.15 (2.5,7.5) nd 0.09 nd 0.12 6117 (7.5,7.5) 0.09 nd 0.14 (2.5,2.5) nd 0.10 nd 0.12 4 (2.5,7.5) nd 0.10 nd 0.16 (2.5,1.5) 0.19 nd 0.13 475 (2.5,4.5) nd 0.11 nd 0.13 (2.5.7.5) nd 0.08 nd 0.09 (7.5,1.5) nd 0.14 nd 0.09 6143 c nd 0.24 nd 0.27 6146 C nd 028 nd 0.27 6147 C nd 0.29 nd 0.28

'nd hdicates rion detect, MDA provided b No entry in the MDA column Is provided when residual radioactivity Is detected C Soil sample unobtainable due to subsurface electrical hazard d Insitu measurement unobtainable due to powerline obstruction or elevated background activity.

2-216

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Unit 69 Description Survey Unit 59 is an extension of the owner-controlled propery that is separated from the main site by US Route 31. This location is approximately 33,589 m in area and encompasses a portion of an abandoned railroad spur that once serviced the site during plant construction. The railroad grade remains; however, the rails and ties have been removed. Survey Unit 59 is an open field with forested areas located south and east of the rail grade. An unimproved lane connects the rail grade to US Route 31 provides access into this area. Subsurface structures and components do not exist in this survey unit.

History This survey unit is an outlying area that has remained remote from plant operational activities.

At the time of final plant shut down this area met the classification requirements for Non Impacted Area status. Subsequent decommissioning activities have required this area to be used for the storage of clean bulk soil. A physical inspection of the area following soil storage identified chunks of broken concrete that had inadvertently been transported with the soil. An investigation of this event identified Co-60 (< 0.1 pCig ) in a firebrick found in this material. All construction materials have been removed from this location for offsite disposal. Extensive surveys following this event did not identify residual radioactivity above established background concentrations in soils within this area.

Radiological Status Soil radioactivity in this survey unit is consistent with levels established as standard background for soils of this type in northwestern Michigan. Based on historical data, the radiological status of Survey Unit 59 is Class 2.

Primary Survey Desian

1. Sample Data Points Required The scoping survey resulted in the following data:

Nuclide identification Cs-137 Mean value (pCVg) 0.25 Standard Deviation (a) 0.11 The relative shift for characterization surveys is determined using LBGR values set at 50% of the IDCGL.

Relative Shift = DCGL-LBGR = 5.11 - 2.5 = 23.7 a 0.11 With a and Perror levels set at 0.05 and an assumed relative shift of 3, the Sign Test requirements specify a sample size of 14 data points. As a conservative measure 36 samples were collected in this survey unit.

2-217

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results

2. Sample Locations Sample locations were selected by random method Bounding survey unit dimensions 410 x 810 meters.

Random numbers were generated and applied to bounding survey unit dimensions to determine data point coordinate locations. This process was continued until 36 sample point locations successfully fell within the survey unit.

Supporting Surveys Extensive soil sampling and laboratory analyses (59,d) were conducted in this area early In the decommissioning process to establish area soil radioactivity baselines for development of the In-situ and surface scan measurement systems. The results of survey 59A 2 represent randomly selected data points falling within Survey Unit 59 that were part of a larger area study conducted to define regional background radioactivity levels in soil. Supporting survey 59A 3 was to investigate potential contamination in contact soils resulting from the movement of plant materials into this area.

Data Summary Survey Unit 59 Survey No. of Samples Radionuclides Mean (pCI1g) Max. Value (pCl1g) 59A, 36 Cs137 0.31 0.72 59A2 6 Cs137 0.37 0.49 59A 3 10 Cs1 37 0.26 0.47 59Ar 67 Cs137 0.26 0.62

• sd indicates supplemental data 2-218

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/1/2003 Appendix 2-E, Characterization Survey Results Survey Unit 59 Big Rook Point LaOnd Legend Survey Unit 59 DNumbered Local Coordinate Gnid Soil Sample Locations 0 2I I 1I00 2-219

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site CharacterIzation 41112003 Appendix 2-E, Characterization Survey Results Survey Results Survey Grid Coordinate Depth Cs-137 Co-60T AM-241 (xy) (.) Activity [MDA Activity

• VIDA Activ ' MDA 59Asd 7297 (9.5.4.5) 0.00-0.15 0.25 nd 0.12 nd 0.19 59Aod 7308 (6.5.5.5) 0.00-0.15 0.10 nd 0.02 nd 0.20 59Aid 7315 (5.6,4.2) 0.00-0.15 nd 0.07 nd 0.07 nd 0.23 59Awd 7869 (1.5,1.5) 0.00-0.15 0.38 nd 0.17 nd 0.32 59Afd 7869 (3.5,1.5) 0.00-0.15 0.36 nd 0.14 nd 0.32 59Aad 7869 (5.5,1.5) 0.00-0.15 0.26 nd 0.14 nd 0.32 59Afd 7869 (7.5,1.5) 0.00-0.15 0.13 nd 0.11 nd 024 59A~d 7869 (9.5,1.5) 0.00-0.15 0.32 nd 0.14 nd 029 59APd 7869 (0.5,3.5) 0.00-0.15 0.29 nd 0.11 nd 0.35 59Asd 7869 (2.5,3.5) 0.00-0.15 0.38 nd 0.14 nd 028 59A~d 7869 (2.5,3.5) 0.15-0.30 0.16 nd 0.15 nd 0.31 59A.d 7869 (4.5,3.5) 0.00-0.15 0.27 nd 0.03 nd 0.28 59Aed 7869 (6.5,3.5) 0.00-0.15 0.26 nd 0.11 nd 0.30 59A.d 7869 (8.5,3.5) 0.00-0.15 0.19 nd 0.14 nd 0.27 59A~d 7869 (8.5,3.5) 0.15-0.30 nd 0.05 nd 0.06 nd 0.29 59Agd 7869 (1.5,5.5) 0.00-0.15 0.28 nd 0.10 nd 0.26 59A.d 7869 (3.5.5.5) O0.0-0.15 0.34 nd 0.11 nd 0.25 59Aw 7869 (5.5,5.5) 0.00-0.15 0.31 nd 0.11 nd 0.30 59Aad 7869 (5.5,5.5) 0.15 0.30 0.11 rd n 0.16 d n0.4-3 MO%A ,Veen ns r W n nrn i -m 0n14 ncl uAw nu u.Zf

- vw 41 lQ1 4r""l?1 rl-T!  ::, f,-

i 17: I I Z- I ,

rno g

59Agd 7869 (9.5,5.5) O.U0-U.1. U.5.5 flu_.___

nu u.u 59Ahd 7869 (0.5,7.5) 0.00-0.15 0.46 nd 0.15 nd 0.30 59Awd 7869 (2.5,7.5) 0.00-0.15 0.30 nd 0.04 nd 0.31 59A~d 7869 (2.5,7.5) 0.15-0.30 nd 0.10 nd 0.15 nd 0.26 59Asd 7869 (4.5.7.5) 0.00-0.15 0.28 rnd 0.15 nd 0.32 59Asd 7869 (6.5,7.5) 0.00-0.15 0.23 nd 0.05 nd 0.25 59Asd 7869 (6.5,7.5) 0.15-0.30 0.14 nd 0.10 nd 0.29 59Awd 7869 (8.5,7.5) 0.00-0.15 0.24 nd 0.12 nd 0.33 59Aed 7869 (3.5,9.5) 0.00-0.15 0.39 nd 0.14 nd 0.33 59AWd 7869 (5.5,0.5) 0.00-0.15 0.28 nd 0.16 nd 0.30 59A4d 7869 (7.5,9.5) 0.00-0.15 0.38 nd 0.14 nd 0.31 59A~d 7869 (9.5,9.5) 0.00-0.15 0.37 nd 0.14 nd 0.32 59Asd 7956 (2.0,2.5) 0.00-0.15 rid 0.07 nd 0.09 nd 0.22 59AMd 7956 (8.0,2.5) 0.00-0.15 nd 0.09 nd 0.11 nd 0.24 59AWd 7956 (2.0,8.5) 0.00-0.15 nd 0.07 nd 0.07 nd 0.17 59A~d 7956 (8.0,8.5) 0.00-0.15 nd 0.06 nd 0.06 nd 0.22 59Awd 8020 (4.2,5.8) 0.00-0.15 0.18 nd 0.13 nd OA3 59A~d 8036 (1.2,7.3) 0.00-0.15 0.26 nd 0.08 nd 0.16 59Asd 8093 (5.5,5.6) 0.00-0.15 0.19 nd 0.12 nd OA3 59A~d 8099 (5.2,5.2) 0.00-0.15 0.27 nd 0.15 nd 0.26 59Awd 8113 (8.8,6.5) 0.00-0.15 0.46 nd 0.08 nd 0.26 59Awd 8115 (0.3,7.5) 0.00-0.15 nrd 0.10 0.10d 0.21 59Aed 8179 (5.0,5.0) 0.00-0.15 0.16 rd 0.10 rd 0.21 59AWd 8181 (5.5,5.5) 0.00-0.15 0.38 rd 0.11 rd 0.44 2-220

Revision 0 BRP LICENSE TERMINATION PLAN 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Grid Coordinate l Depth Cs- 137 Co-60 Am-241 Survey JpCVg)~

(x()RC(n)a

,__Y____ Activity MDA ActivIty f MDA °Actvty IMDA 8185 (5.5,52) 0.00-0.15 0.31 nd 0.11 nd 0.43 59A d (5.2,5.2) 0.00-0.15 0.62 nd 0.12 nd 0.44 59Asd 8187 (1.5,3.5) O.O-0.15 0.44 nd 0.12 nd 0.22 59Ad 8269 (0.0,0.0) 0.00-0.15 0.09 nd 0.10 nd 0.27 59Asd 8193 (1.5,3.2) 0.00-0.15 0.40 nd 0.12 nd 0.22 59Ad 8193 8263 (7.5,5.2) O.00-0.15 0.52 nd 0.12 nd 0.42 59Aed (6.0,5.0) 0.00-0.15 0.24 nd 0.15 nd 0.43 59Asd 8265 (5.0.5.0) 0.00-0.15 0.28 nd 0.10 nd 0.20 59A~d 8329 0.00-0.15 0.13 nd 0.10 nd 0.18 59A0d 8331 (5.0,5.0)

(2.5,6.5) 0.00-0.15 0.14 nd 0.07 nd 0.19 59Ad 8333 (2.8,52) 0.00-0.15 0.21 nd 0.07 nd 0.12 59Aed 8335 (2.5,5.5) O.O-0.15 0.09 nd 0.09 nd 0.19 59Asd 8337 (0.5,5.5) 0.00-0.15 0.19 nd 0.07 nd 0.20 59Ad 8339 (2.5,5.5) 0.00-0.15 0.11 nd 0.08 nd 0.14 59Asd 8340 8353 (2.5,8.0) 0.00-0.15 0.38 nd 0.08 nd 0.19 59A (0.2,5.2) 0.00-0.15 0.24 nd 0.05 nd 0.20 59Asd 8491 (4.5,6.2) 0.00-0.15 0.15 nd 0.03 nd 0.22 59Acd 8494 (4.2,5.8) 0.00-0.15 0.25 nd 0.11 nd 0.22 59Ad 8513 (4.6,5.2) 0.00-0.15 0.14 nd 0.03 nd 0.22 59A~d 8514 (4.4,6.5) 0.00-0.15 0.20 nd 0.10 nd 0.21 59Asd 8583 (3.2,7.8) 0.00-0.15 nd 0.10 nd 0.09 nd 0.22 59A d 8842 (6.5,3.5) 0.00-0.15 nd 0.07 nd 0.16 nd 0.43 59Ad 9807 59A d 10125 (4.5.7.2) 0.00-0.15 0.13 nd 0.20 nd 0.44 (1.0,7.0) 0.00-0.15 0.28 nd 0.06 nd 0.34 59A, 8834 (9.0,9.0) 0.00-0.15 0.72 nd 0.10 nd 0.42 59A, 9078 59A, 9403 (6.0,4.0) 0.00-0.15 0.62 nd 0.09 nd 0.38 59A, 9564 (2.0,1.0) 0.00-0.15 0.21 nd 0.06 nd 0.28 59A, 10205 (2.0,9.0) 0.00-0.15 0.25 nd 0.09 nd 0.37 (7.0,8.0) 0.00-0.15 0.18 nd 0.06 nd 0.32 69A, 8103 (8.0,6.0) 0.00-0.15 0.36 nd 0.11 nd 0.43 59A, 7699 0.36 8744 (3.0,3.0) 0.00-0.15 0.27 nd 0.08 nd 59A, 0.33 (1.0,9.0) 0.00-0.15 0.04 nd 0.06 nd 59A, 8491 0.34 8817 (8.0,4.0) 0.00-0.15 0.22 nd 0.08 nd 59A, 0.00-0.15 0.19 nd 0.09 nd 0.37 59A, 9070 (8.0,.0) 10272 (2.0,6.0) 0.00-015 0.30 nd 0.09 nd 0.3 59Ai (9.0,8.0) 0.00-0.15 0.18 nd 0.08 nd 0.33 59A, 9868 0.00-0.15 0.21 nd 0.09 nd 0.39 59A, 9462 (5.0,9.0) 0.00-0.15 0.62 nd 0.09 nd 0.38 59A. 9300 (8.0,0.0) 9943 (6.0,1.0) 0.00-0.15 0.40 nd 0.09 nd 0.42 59A8 (3.0.2.0i 0.00-0.15 0.19 nd 0.07 nd 0.34 59A, 9620 (9.0,5.0) 0.00-0.15 0.40 nd 0.10 nd 0.41 59A, 9676 10243 (4.0,8.0) 0.00-0.15 0.29 nd 0.10 nd 0.39 59Ai (5.0,3.0) 0.00-0.15 0.22 nd 0.07 nd 0.43 59Ai 9521 (9.0,7.0) 0.00-0.15 0.52 nd 0.09 nd 0.43 59A, 8930 (5.0,8.0) 0.00-0.15 0.58 no nd 0.10 nd 0.42 59A, 9174 n

-n On s lA n -A n as

, I 69A, Im Qea f I I u I I9d fw I ic n 4 n%{and: 0n 0X FVLn I -pi II D4 11 "

i i nn llu nI W.WW

.5 I"

Ali W--

II 59Ai -EI viol I  %. .u,l.'j I I__ -, ,,

2-221

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey l Grid l Coordinate 1 Depth l Cs-1I37 Co-60 j Am-241 (x,y) j Activity ' MDA ° Activity

• VIA IMDA Activity 59A 1 9021 (6.0.5.0) 0.00-0.15 0.30 nd 0.10 nd 0.43 59Ai 7400 (2.0,0.0) 0.00-0.15 0.28 Nd 0.08 nd 0.38 59A 1 7160 (4.0,8.0) 0.00-0.15 0.15 nd 0.07 nd 0.36 59Ai 7156 (7.0.7.0) 0.00-0.15 0.28 nd 0.08 nd 0.42 59A, 8371 (2.0,1.0) 0.00-0.15 0.44 nd 0.09 nd 0.42 59A, 7483 (7.0,4.0) 0.00-0.15 0.39 nd 0.09 nd 0.42 59A, 7472 (9.0.7.0) 0.00-0.15 0.21 nd 0.08 nd 0.30 59A 1 8525 (7.0,6.0) 0.00-0.15 0.26 nd 0.08 nd 0.36 59A 1 7872 (8.0,4.0) 0.00-0.15 0.2 nd 0.08 nd 0.31 59A, 8429 (3.0,8.0) 0.00-0.15 0.05r nd 0.05 nd 0.30 59Ak 10014 (4.0,5.0) 0.00-0.15 0.43 nd 0.09 nd 0.43 59Ai 9772 (5.0.2.0) 0.0O0-.15 0.33 rid 0.08 rid 0.43 59A 2 9624 (5.3.0.8) 0.00-0.15 OA8 nd 0.08 nd 0.39 59A 2 9783 (9.0,1.3) 0.00-0.15 0.39 nd 0.10 nd 0.41 59A 2 8497 (3.0,9.8) 0.00-0.15 0.2 nd 0.06 nd 0.33 59A2 10223 (7.2,7.8) 0.00-0.15 0.49 nd 0.08 nd 0.37 59A 2 9103 (1 .4,9.4) 0.00-0.15 0.32 nd 0.09 nd OA3 59A 2 8770 (4.8,4.8) 0.00-0.15 0.34 nd 0.08 nd OA2 59As 7554 (1.0.5.2) 0.00-0.15 0.12 nd 0.05 nd 0.27 e art 4 I nn n"* fn 2A nd 0.07

._U . _

nd 0.32 O~~~~A 3~~~ _ _ _ _ _ __

59A 3 7389 (8.8,7.5) 0.00-0.15 0.47 nd 0.06 nd 0.33 (4.9,5.3) 0.00-0.15 0.31 nd 0.07 nd 0.32 59A 3 7471 59A 3 7553 (5.9,92) 0.00-0.15 0.22 nd 0.07 nd 0.34 59A 3 7794 (1.5,6.3) 0.0O-0.15 0.22 nd 0.07 nd 0.32 59A 3 7550 (9.5,4.8) 0.00-0.15 0.12 nd 0.07 nd 0.31 1 _59A3 7793 * (5.2,9.7) 0.00-0.15 0.37 nd 0.07 nd 0.32 59A 3 7952 (4.7,5.3) 0.00-0.15 0.28 nd 0.05 nd 0.29 59A 3 7790 (1.5,4.1) 0.00-0.15 0.21 nd 0.07 nd 0.28

- nd Indicates non detect, MUA provioe b No entry Inthe MDA column Is provided when residual radioactivity Is detected 2-222

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Canal Survey Unit Description The BRP Discharge Canal (or Canal) is an area of Lake Michigan north of the Owner Controlled Property that extends from the Screenhouse to the normal beach contour line. This location is approximately 600 m2 in size and includes the submerged area from the Canal bottom to the waters edge. Normal water depths in the Canal range from 4 to 7 feet; however, current near record lows in Lake Michigan water levels have greatly reduced this depth. The Canal is the licensed release pathway for plant effluent waters. Circulation Water System discharge rates have historically been approximately 50,000 gal/min, resulting in a scouring effect on the Canal bottom. The Canal bottom consists of a layer of dense cobble resting on a base of hard clay.

The cobble is estimated to be between 15 and 90 cm thick. Dynamics in effluent discharge have resulted in minor locations of sediment build-up in backwater eddies and areas of low flow.

Components and equipment in this area include the following:

• Liquid radioactive release pipe located next to the Screenhouse weir at the point of effluent discharge,

• Storn water discharge piping approximately tenmeters north of the Screenhouse,

• Liquid process monitor intake piping that traverses the Canal approximately eight meters from the Screenhouse, and

• The concrete floor and foundation footings of the Screenhouse.

History Routine environmental sampling of the Canal has identified trace levels of residual radioactivity in area sediment. Minor quantities of residual radioactivity has also been identified in dredge spoils taken from maintenance excavations of the Canal.

Radiological Status The Canal is the permitted release pathway for plant effluent water discharge into Lake Michigan. Characterization analyses have identified elevated levels of residual radioactivity in sediment in the Canal. This area Is scheduled to be returned to normal lakeshore contour to achieve the Big Rock Point Greenfield condition. The radiological status of the Canal survey unit is Class 1. Characterization of the Canal Is scheduled to continue and remediation efforts will be conducted as necessary to meet the requirements of unrestricted site release.

Survey Desimn The survey size and data point locations were judgmentally selected. The survey objective was to collect representative samples of Canal sediment at systematic intervals from the point of effluent discharge. Sediment sampling was performed by underwater divers using hand auger tools. Sample point locations were selected to be representative of the Canal bottom; however, visible locations of sediment build-up were specifically targeted based on historical knowledge of increased potential for these areas to contain residual radioactivity.

2-223

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Core profiles greater than 15 cm were unobtainable by deep-water sampling. To investigate potential depth of activity in Canal sediment a series of caissons were installed traversing the Canal in a sediment rich area of shallow water. Samples were collected to a depth of 30 cm by removing water and excavating the sediment in 15 cm intervals.

Supporting Surveys The extent of terrain in this survey unit has increased due to the current low water levels of Lake Michigan. Some survey data points overlap adjoining survey unit boundaries due to the fluctuation in Lake Michigan water levels. Survey Canal Al was conducted to include shoreline areas normally under water in this survey unit.

Data Summary Canal Survey Unit Survey No. of Samples Radionuclides Mean (pCUg) Max. Value (pC11g) I CS137 0.61 .90 CanalA, 18 co,___0.38 2.68 Mn_4* 0.12 0.23 C ___s137_1.39 3.31 CanaLA2 17 CO60 2.87 17.74

__ Mn64_0.32 1.04 Mn-54 detected In 3 samples.

2-224

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 4/112003 Appendix 2-E, Characterization Survey Results N

Discharge Canal Legend 0 10 20 40 Scale: I I I II II Meter m=~.- a.

• ScSAwL~.

Big Rook Point Legend Ligend cwSmy

-h~-:>u lnvtd NA - -,

-C-A

uoletd flzes 2-225 6 - 27

BRP LICENSE TERMINATION PLAN Revision 0 41112003 Chapter 2, Site Characterization Appendix 2-E, Characterization Survey Results Survey Results Survey Grid Coordinate Depth Cs-137 Co-60 Mn-64 rAm-241 SuveGl Corint (m) (pCU/) (pCVg) (pCVg) (pCvg)

__Aci viA IMD Actvity MDA' 6 I Activity IVID9 Activity [ IMDAD Canal Ai 124 (2.5,6.0) 0.00-0.15 0.85 0.17 nd 0.04 nd 0.25 Canal A,1 124 (6.0.5.5) 0.00-0.15 0.34 0.09 nd 0.04 nd 0.27 Canal A, 125 (9.0,5.0) 0.00-0.15 0.33 0.16 nd 0.04 nd 0.29 Canal A. 108 (5.0,5.5) 0.00-0.15 0.16 0.14 0.02 nd 0.27 Canal A, 91 (1.0,5.5) 0.00-0.15 nd 0.06 nd 0.06 nd 0.04 nd 0.27 Canal Al 91 (9.0,.5-) 0.00-0.15 0.23 0.06 nd 0.04 nd 0.23 Canal A, 17290 (5.0,1.0) 0.00-0.15 0.36 0.09 nd 0.04 nd 0.24 Canal A, 17290 (9.0,1.0) 0.00-0.15 0.33 0.16 nd 0.04 nd 025 Canal A, 17289 (5.0,1.0) 0.00-0.15 0.42 0.09 nd 0.04 nd 0.25 Canal A, 17099 (4.5,1.0) 0.00-0.15 0.20 0.09 nd 0.04 nd 0.24 Canal A, 122 (8.0,6.0) 0.00-0.15 1.20 2.68 0.23 nd 0.39 Canal A, 105 (5.5,0.0) 0.00-0.15 1.90 1.37 0.12 nd 0.31 Canal A, 106 (4.0,5.0) 0.00-0.15 nd 0.04 0.13 nd 0.05 nd 0.24 Canal AI 106 (0.5,5.0) 0.00-0.15 0.26 0.18 nd 0.05 nd 0.25 Canal A, 105 (8.0,5.0) 0.00-0.15 0.67 0.65 nd 0.06 nd 0.31 Canal A, 17174 (9.0,1.0) 0.0O-0.15 0.96 0.11 nd 0.04 rid 0.23 Canal A, 17174 (5.0,1.0) 0.00-0.15 1.37 0.14 rnd 0.05 nd 028 Canal A,1 17175 (9.0,2.0) 0.00-0.15 0.21 0.09 nd 0.03 nd 0.24 Canal A2 141 (6.0,9.0) 0.00-0.15 3.31 17.74 1.04 nd OA3 Canal A2 65 (6.5,1.0) 0.00-0.15 1.24 2.38 0.19 nd 0.37 Canal A2 65 (9.0,6.0) 0.00-0.15 1.26 2.21 0.12 nd 0.35 Canal A2 123 (4.0,4.0) 0.00-0.15 1.41 5.03 0.38 nd 0.41 Canal A2 106 (7.5,1.5) 0.00-0.15 1.08 2.10 0.15 nd 0.36 Canal A2 107 (0.0,5.5) 0.00-0.15 1.19 2.56 0.28 nd 0.36 Canal A2 88 (4.5,2.5) 0.00-0.15 1.59 2.22 0.10 nd 0.38 Canal A2 88 (8.5,9.0) 0.00-0.15 1.22 0.75 0.06 nd 0.29 Canal A2 17280 (1.0,0.5) 0.00-0.15 1.25 0.29 nd 0.06 nd 0.26 Canal A2 17352 (1.0,9.0) 0.00-0.15 1.74 0.16 nd 0.04 nd 0.29 Canal A2 17353 (1.0,9.0) 0.00-0.15 0.64 0.21 rid 0.05 nd 0.32 Canal A2 89 (4.5,4.0) 0.00-0.15 2.17 8.32 0.82 rd 0.43 Canal A2 89 (4.5,4.0) 0.15-0.30 0.84 0.22 Ond 0 0.05 nd 0.31 Canal A2 17170 (0.0,0.5) 0.00-0.15 1.78 1.97 0.13 nd 0.37 Canal A2 17170 (0.0,0.5) 0.15-0.30 0.42 0.15 Id 0.03 id 0.07 Canal A2 17169 t7.5,5.0) 0.00-0.15 1.58 2.00 0.23 nd 0.34 Canal A2 17169 (7.5,5.0) 0.15-0.30 0.92 0.40 r 0.04 rd 0.32 rnd indicates non detect MDA provided b No entry Inthe MDA column Is provided when residual radioactivity Is detected 2-226

BRP UCENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 411/2003 Appendix 2-E, Characterization Survey Results Drainage Ditch Survey Unit Description The Drainage Ditch is a seasonal stream less than one meter wide that extends approximately 370 meters from the northern boundary of the Non-impacted Area to Lake Michigan. Surface waters from wetland elevations to the south concentrate in low areas along the railroad grade and flow north into the Industrial Area. Stormwater runoff is diverted around the Protected Area to the Drainage Ditch and discharges into Lake Michigan. The Drainage Ditch also receives water from a series of catch basins and corrugated metal piping that act to remove storm water away from buildings and parking lots in the Industrial Area. Subsurface structures and components include storm water culverts and piping. The stream is traversed in limited areas by septic piping and electrical conduit History Residual radioactivity has been identified in the sediment of storm water piping in the Protected Area and in Drainage Ditch soils near the west pipe discharge. Sediment accumulations have been removed from all east section storm water piping originating in the Protected Area. In addition, a sediment collection barrel was installed in the west section piping and locations of potential sediment accumulation are routinely monitored to identify the potential migration of contaminants in this system. Sample analyses have not identified residual radioactivity In the liquid effluent of the storm water system.

Radiological Status Resisual radioactivity was identified at trace level concentrations (<0.2 pCi/g) in several sediment samples collected in the Drainage Ditch stream. The Drainage Ditch Survey Unit is designated as a Class 2 Area.

Survey Desiqgn The size and data point locations of this survey were judgmentally selected. Samples were systematically collected at 20 meter intervals in straight sections of the stream. Additional samples were collected in stream bends, areas of low flow, and visible locations of sediment accumulation. Samples were also collected in suspect areas at every culvert outlet and discharge pipe to the Drainage Ditch.

Supporting Surveys Supporting surveys were not conducted in this survey unit.

Data Summarv Drainage Ditch Survey No. of Samples Radionuclides Mean (pClug) Max. Value (pC/g)

Cs137 0.13 0.32 Cose 0.11 0.17 Co-60 detected in 2 samples.

2-227

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41/2003 Appendix 2-E, Characterization Survey Results N

Surface Water Drainage Ditch eg

-# -v

- IjIl A-, --

I I li I

-V -fl I K- t - At>I'? I-is4-t

- . 4 I-F

~~~

'.1-

it"-.- __ _ -

1. ~~

t4

,.W7 1111EV 1t1 4YY_711 ts

--4--- -

i 11.X<

4-_- t _ . :

It I Ir_V' 142 0 20 40 80 SI I I Meters

- Surface Water Drainage Ditch

= Buildings and Structures Numbered Local Coordinate Grid Sediment Sample Locations C

c-le 2-228

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results Survey Results Depth Cs-137 Co-60 Am-241 Survey Grid Coordinate ep l (pCg) (PC a) (pCg)

(x.y) (m) Activity

• MDA D Activity MDA _

• DA

-Activty StreamAi 590 (0.0.5.5) 0.00-0.15 nd 0.04 nd 0.05 rd 0.25 StreamAi 6109 (7.5,5.5) 0.00-0.15 nd 0.06 rnd 0.08 nd 0.30 StreamA, 419 (7.5.5.5) 0.00-0.15 nd 0.04 nd 0.04 nd 0.21 StreamAi 423 (7.5.5.5) 0.00-0.15 nd 0.05 nd 0.07 nd 0.30 StreamA, 421 (7.5,5.5) 0.00-0.15 nd 0.07 nd 0.08 nd 0.39 StreamAi 411 (7.5.5.5) 0.00-0.15 0.03 nd 0.05 nd 0.30 StreamA, 387 (7.5,5.5) 0.00-0.15 0.06 nd 0.08 nd 0.26 StreanA, 375 (7.5,0.0) 0.00-0.15 0.32 0.17 nd 0.30 StreamAi 373 (2.5,5.0) 0.00-0.15 0.07 nd 0.05 nd 0.20 StreamAi 359 (7.5.2.5) 0.00-0.15 0.14 nd 0.06 nd 0.30 StreamA, 335 (7.5,2.5) 0.00-0.15 nd 0.07 nd 0.06 nd 0.32 StreamAi 311 (7.5.2.5) 0.00-0.15 0.12 nd 0.06 nd 0.27 StreamA, 299 (7.5,8.0) 0.00-0.15 0.18 nd 0.05 nd 0.25 StreamA, 242 (7.5.7.5) 0.00-0.15 0.14 0.05 nd 0.30 StreamA, 204 (7.5.7.5) 0.00-0.15 0.22 nd 0.05 nd 0.23 StreamAi 166 (7.5.7.5) 0.00-0.15 0.08 nd 0.05 nd 0.24 StreamAi 128 (7.5.7.5) 0.00-0.15 0.07 nd 0.04 nd 0.18 StreamA, 109 (2.5,7.5) 0.00-0.15 0.07 nd 0.04 nd 0.21 StreamA, 73 (0.0.7.5) 0.00-0.15 0.20 nd 0.05 nd 0.19

• ninditcates non detect, MDA provided b No entry Inthe MDA column is provided when residual radioactivity is detected 2-229

BRP LICENSE TERMINATION PLAN Revision 0 Chapter 2, Site Characterization 41112003 Appendix 2-E, Characterization Survey Results REFERENCES

1. Big Rock Point 50.75g, Decommissioning Records

2. Big Rock Point Background Radioactivity in Soil, EA-BRP-DW-01-00, June 2000

3. Big Rock Point Background Radioactivity in Soil, EA-BRP-SC-100

4. Big Rock Point Radiation Protection and Environmental Services Policy and Program Description, Administrative Procedure D5.1

5. Big Rock Point Restoration Project, Historical Site Assessment

6. Condition Report C-BRP-00-0087, Paint Chip Removal Uncovers Soil Contamination, April 12, 2000

7. Condition Report C-BRP-00-0178, Followup Survey of Building Debris Identified Trace Contamination on Site Property South of US 31, July 12, 2000

8. Condition Report C-BRP-98-0056, Canal and Service Water LPM Contamination Alarms, Unknown Cause, March 14, 1998

9. Consumers Energy Big Rock Plant Core Borings Report, Radian International, August 23, 1999

10. Consumers Energy Big Rock Plant Geoprobe Soil Sampling, Radian International, May 3, 1999

11. NUREG/CR 5849, Open Land Surveys, Affected Areas

12. RESRAD Calculation of Contamination Levels Equal to 25 mremlyr at 5 years Post -

Shutdown, RAE/HP97019

13. United States Nuclear Regulatory Commission, Environmental Assessment and Finding of No Significant Impact, Docket No 50-155 2-230