ML043500368

Final Status Survey Release Record FR-1000-01, Rev 0, Foxbird Island Alleyway Survey Unit 1.

ML043500368
Person / Time
Site:	Maine Yankee
Issue date:	12/07/2004
From:	Donna Anderson, Pillsbury G, Randall D Maine Yankee Atomic Power Co
To:	NRC/FSME
References
FR-1000-01, Rev 0
Download: ML043500368 (40)

Text

MAINE YANKEE FINAL STATUS SURVEY RELEASE RECORD FR-1 000 FOXBIRD ISLAND SURVEY UNIT 1 Date:

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MAINE YANKEE FINAL STATUS SURVEY RELEASE RECORD FR-1000 FOXBIRD ISLAND SURVEY UNIT 1 A. SURVEY UNIT DESCRIPTION Foxbird Island lies just off the southern end of the Bailey peninsula. After plant construction, it was connected to the mainland peninsula by two earthen dikes that formed the east and west dike walls of the Forebay. In addition to the island itself, the Foxbird Island area includes all of the land areas immediately to the south of the plant's radiologically Restricted Area (RA). The area also surrounds the Forebay. The Forebay is not included, as it received a complete FSS within survey package FR0400. The area is bordered to the North by a portion of the RA called the "West Side Yard", which will receive an FSS in package FR0100 .

Two large diameter fiberglass pipes traverse the Island. These buried pipes are connected to the Forebay with the submerged thermal diffuser system located to the south of the Island in Montsweag Bay. The pipes were isolated by inserting the stop logs for the duration of the Forebay remediation project and are now buried, at the Forebay end, under several feet of fill material. The pipes rest on bedrock, are not under pressure, -and no leakage has been reported.

Some gravel and riprap material, originating from the lowering of the Forebay dikes, was stored for a brief period along the road at the north end of the island. Prior to placement, the material was surveyed and found to be acceptable for storage.

The Forebay remediation, FSS, and final environmental restoration were completed prior to the commencement of this survey. The portion of the survey unit lying north of Foxbird Island was made up of a compacted gravel fill material containing some small rocks or boulders.

The island is made up of wooded and open areas with many instances of boulders and exposed rock ledge, particularly along the shorelines. An access road runs along the top of the East dike of the Forebay and continues down the island. The road terminates near the southern tip of the area. The majority of open space on the island is located along this road corridor, which extends a considerable distance to the wvest of the access road.

The survey unit is located just northeast of coordinates 405,500 N and 623,000 E using Maine State Coordinate System (West Zone) NAD 1927. Map FR 1000 SITE displays the survey unit and its relation to the Maine Yankee site. All maps referenced in this release record are provided in Attachment I unless otherwise noted. The total survey unit comprises approximately 51,700 m2 in area.

FRIOOO is designed to encompass only Class 3 areas. The footprint of FROO00 covers all areas for which higher FSS classifications are appropriate.

FR-1000-01, Revision 0 Page 2 of 40

B. SURVEY UNIT DESIGN INFORMATION The area wvas designated a Class 3 land survey unit per the LTP (Table 5-1 C). The area had had a very low probability of containing any plant-derived residual contamination, as it was not located within the protected area and few industrial activities were undertaken within the survey unit.

The survey unit design parameters are shown in Table 1. Given a relative shift of 3.0, it was determined that 14 direct measurements were required for the Sign Test. Measurement locations were randomly determined and are illustrated on the map FR 1000-01 a (Attachment 1).

During the remediation of the Forebay, an enclosed "radioactive material area" was established over a small area at the North end of the of the survey unit. The area contained the self-contained process skid for Forebay sediment remediation. This area processed volumes of very low specific activity materials (waste from the Forebay vacuuming operations) that were made into a non-dispersible waste form. The area was extensively monitored throughout its operations and following completion of remediation, and had no history of leakage. To compensate for these activities, the scanning efforts focused on locations on or near the access road and included the process skid location.

Scan grids of I m by 10 m were established2 , as indicated on survey maps FR 1000-Olb through FR 1000-0I m. One percent to 10% scan coverage of the area was required. To meet this requirement, 595 1-meter wide "scan lanes" were made along the site access road. This produced approximately 5,850 m2 of scan area, exceeding the 10% requirement. The survey instruments used, their MDCs, and alarm setpoints, are provided in Attachment 2.

Background values were established for the scan measurements, based on local scaler values in the survey unit. It was initially planned that one background value would be used for scanning. After receiving a very high percentage of grids alarming and a number of grids with low background, multiple scan alarm setpoints were established, from multiple background evaluations, on a more local basis. These background values were used to establish scan alarm setpoints, and to confirm the scan MDCs used were appropriate.

Since the new backgrounds and setpoints were established in mid-survey, some grid blocks had already been completed, and did not benefit from a more appropriate localized setpoint.

2 A limited number of scan grids were I x 6m, as shown in Attachment 1.

FR-1000-01, Revision 0 Page 3 of 40

TABLE 1 SURVEY UNIT DESIGN PARAMETERS Survey Unit Design Criteria Basis Area 51,700 m4 No limit for Class 3 Area Based on an adjusted LBGR of Number of Direct 14 3.51 pCi/g, sigma of 0.23 pCi/g 3 Measurements Required and a relative shift of 3.0.

Type I = Type II = 0.05 Sample Area N/A Class 3 Area Sample Grid Spacing N/AClass 3 Area Scan Grid Area 1mx1Om Class 3 Area Area Factor N/AClass 3 Area Scan Survey Area 5,850 m" Class 3 Area - 10%

Background t- '-rt SPA-3 (scan) Average background DI 6-150, EC-009-0l, SPA-3_(scan)_+1000 cpm. LTP Section 5 3 sigma of Background EC-009-01 (MY)

Scan Investigation Level plus Background (Reference 2)

See Table 2-2 (Reference 2) ________

DCGL 4.2 pCi/g LTP, Rev 3, Section 6.7 Design DCGLENIC N/A Class 3 Area C. SURVEY RESULTS As required, 14 direct soil measurements were made and the results are presented in Table 2.

All direct measurements were below the DCGL. A total of 315 grids had alarms for investigation. So an extensive and exhaustive investigation survey was required. The investigations performed are discussed further in Section D.

3 Design sigma based on characterization data from Foxbird Island, RIOOO, LTP Table 5-IC.

FR-I000-01, Revision 0 Page 4 of 40

TABLE 2 DIRECT MEASUREMENTS Sample Number (pCi/g) Uncertainty (pCilg) Uncertainty of Unity Rule FRI 000-1-S00I < 2.88E-02 1.70E+00 1.36E-0I 4.24E-01 FRI000-1-S002 < 2.44E-02 2.93E-01 2.87E-02 8.58E-02 FRI 000-1 -S003 < 2.7213-02 8.49E-02 1.7613-02 3.81 E-02 FR1000-1-S004 < 2.22E-02 1.41E-02 8.5213-03 1.8013-02 FR1000-1-S005 < 2.47E-02 4.61E-01 4.1OE-02 1.2613-01 FRI1000-1-S006 < 2.35 E-02 4.43E-01 3.6613-02 1.2113-01 FRIOOO-I-S007 < 2.5613-02 2.50E-02 1.3613-02 2.28E-02 FRI000-1-S008 < 3.01 E-02 1.28E-01 2.3913-02 5.0313-02 FRI000-1-S009 < 3.38 E-02 1.12E+00 8.1 IE-02 2.8913-01 FRI000-1-S010 <2.8513-02 1.77E-01 2.1913-02 6.09E-02 FRI 000-1-SO I1 < 2.81 E-02 3.75E-01 3.3713-02 1.0813-01 FRI000-1-S012 < 2.5513-02 _ < 2.62E-02 _ 2.3013-02 FRI000-1-S013 < 3.10OE-02 2.82E-02 1.5613-02 2.711E-02 FRI000-1-S014 2.28E-02 1.2713-02 4.70E-02 1.66E-02 2.6213-02 Mean 2.69E-02 3.52E-01 1.O1E-01 Median 2.64E-02 1.53E-01 5.56E-02 Standard Deviation 3.37E-03 4.89E-01 . . 1.17E-01 2.22E-02 to 1.41E-02 to 1.80E-02 to Range 3.38E-02 1.70E00 4.24E-01

"<" indicates MDA value. Bold indicates positive detection value.

D. SURVEY UNIT INVESTIGATIONS PERFORMED AND RESULTS The investigations generally involved media sampling at the highest count rate location within a given grid. All sample results were well below the DCGL, and were in the range of established background for positive Cs-l 37 results. However, three investigation samples did contain trace amounts of Co-60 (i.e., < 0.04 pCi/g). These came from locations believed to have been used as storage locations for riprap material during the Forebay remediation project. The results of the investigations are presented in Attachment 3 (Table 3-1).

FR-1000-01, Revision 0 Page 5 of 40

E. SURVEY UNIT DATA ASSESSMENT An analysis of the direct sample measurement results, including the mean, median, standard deviation, and sample result range, are provided in Table 2. The soil sampling results yielded results consistent with fallout levels of Cs-137 for undisturbed soil. One sample had detectable Co-60 at a very low level. It is believed that riprap from the Forebay was the source of contamination.

The mean and median activities were less than the DCGL. The highest reported value for Cesium-137 was less than 40.4% of the DCGL. However, this particular sample (SOOI) came from a wooded area with undisturbed soils, where a higher activity of distributed background Cesium-137 activity is expected. This is also true for sample 9. In addition, all results were below the action levels in LTP Table 5-8. Therefore, no further investigations or any reclassifications are required.

For illustrative purposes, as indicated in LTP Section 5.9.3, a simplified general retrospective dose estimate can be calculated from the average residual contamination level by subtracting the established mean fallout Cs-137 background value (0.19 pCi/g) 4 for disturbed soil from the survey unit sample mean activity (0.352 pCi/g). The result is a net value of 0.162 pCi/g.

Considering the contribution from Co-60, the total annual dose rate would be 0.57 mrem/y.

However, for purposes of demonstrating compliance with the radiological criteria for license termination and the enhanced State Criteria, background activity is not subtracted from the soil sample analysis activity values.

F. ADDITIONAL DATA EVALUATION Attachment 4 provides additional data evaluation associated with this Survey Unit, including relevant statistical information. Based on survey unit direct measurement data, this attachment provides the Sign Test Summary, Quantile Plot, Histogram, and Retrospective Power Curve.

I . The Sign Test Summary provides an overall summary of design input and resulting calculated values used to determine the required number (N) of direct measurements (per LTP Section 5.4.2). The Sign Test Summary is a separate statistical analysis that also calculates the mean, median, and standard deviation of the direct measurements.

The critical value and the result of the Sign Test are provided in the Sign Test Summary table, as well as a listing of the key release criteria. As is shown in the table, all of the key release criteria, except for the total standard deviation exceeding the design sigma are met. An adequate number of samples was taken to meet the Sign Test so no additional samples are required.

See Attachment E to Maine Yankee Procedure PMP 6.7.8 (Reference 4).

FR-I000-0I, Revision 0 Page 6 of 40

2. The Quantile Plot was generated from direct measurement data listed in Table 2. The data set and plot are consistent with expectations for a Class 3 survey unit. All of the measurements are wvell below the DCGLs of 4.2 pCi/g and 1.52 pCi/g for Cs-137 and Co-60, respectively.

3. A Histogram Plot was also developed based on the direct measurement values. This plot shows that the direct data were essentially a log normal distribution with two outliers.

4. A Retrospective Power Curve was constructed, based on FSS results. The curve shows that this survey unit having a mean residual activity at a small fraction of the DCGL has a high probability ("power") of meeting the release criteria. Thus, it can be concluded that the direct measurement data support rejection of the null hypothesis, providing high confidence that the survey unit satisfied the release criteria and that the data quality objectives were met.

G. CHANGES IN INITIAL SURVEY UNIT ASSUMPTIONS ON EXTENT OF RESIDUAL ACTIVITY The survey was designed as a Class 3 area; the FSS results were consistent with that classification. As discussed earlier, the direct measurement sample standard deviation was higher than the design sigma, however, no additional measurements were required.

1I. LTP CHANGES SUBSEQUENT TO SURVEY UNIT FSS The FSS of Survey Unit I was designed and performed per the criteria of LTP Rev. 3. There were no subsequent LTP changes with potential impact to this FSS requiring evaluation.

I. CONCLUSION The FSS of this survey unit was designed based on the LTP designation as a Class 3 area.

The survey design parameters are presented in Table 1. The required number of direct measurements wvas determined for the Sign Test in accordance with the LTP. As presented in Table 2, all direct measurements were less than the unitized DCGL.

A Sign Test Summary analysis demonstrated that the Sign Test criteria were satisfied. The direct measurement sigma was determined to be greater than that used for design. However, the relative shift used for design is unaffected, thus indicating that a sufficient number of samples was taken.

The Retrospective Power Curve shown in Attachment 4 confirmed that sufficient samples were taken to support rejection of the null hypothesis, providing high confidence that the survey unit satisfied the release criteria and the data quality objectives were met. Attachment 4 also revealed that direct measurement data represented essentially a normal distribution, with two outliers.

FR-1000-0, Revision 0 Page 7 of 40

The scan survey design for this survey unit was developed in accordance with the LTP and exceeded that document's guideline of scanning 1-10 percent of the total area, for a Class 3 survey. In general, investigation of scan alarms detected only areas within typical background ranges for Cs-137. The maximum sample result was at approximately 5% of the DCGL. Three scan alarm samples, collected in the vicinity of a material storage area ,

contained trace quantities of Co-60. Given the location of the samples, and the scope of the scanning and investigation effort, it is felt that these results (the highest Co-60 value was less than 3% of the DCGL) bear no impact on the conclusion and do not warrant a reclassification of the area.

It is concluded that FRI 000 Survey Unit I meets the release criteria of IOCFR20.1402 and the State of Maine enhanced criteria.

J. REFERENCES I. Initial Characterization Survey and Historical Site Assessment, Maine Yankee letter to the NRC, MN-01-038, dated October 1, 2001

2. Maine Yankee Engineering Calculation, EC-009-01

3. Maine Yankee License Termination Plan, Revision 2, Maine Yankee letter to the NRC, MN-01 -032, August 13, 2001

4. Approach for Dealing with Background Radioactivity for Maine Yankee Final Status Surveys, Attachment E to Maine Yankee Procedure PMP 6.7.8, FSS Data Processing and Reporting

5. Maine Yankee License Termination Plan, Revision 3, Maine Yankee letter to the NRC, MN-02-048, dated October 15, 2002

6. Maine Yankee License Termination Plan, Revision 3 Addenda, Maine Yankee letter to the NRC, MN-02-061, dated November 26, 2002

7. Proposed License Amendment Related to Changes in the Activated Concrete Remediation Plans, Maine Yankee letter to the NRC, MN-03-049, dated September 11, 2003

8. Issuance of License Amendment No. 170, NRC letter to Maine Yankee, dated February 18, 2004 S.

5 As discussed in Section A, this area was used to store materials in support of the remediation of the Forebay.

The materials were surveyed as they were removed from the upper elevations of the dike walls and passed an aggregate measurement scan.

FR-1000-O1, Revision 0 Page 8 of 40

Attachment I Survey Unit Maps FR-I000-01, Revision 0 Page 9 of 40

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FR-IOOO-Ol, Revision 0 Page 23 of 40

Attachment 2 Survey Unit Instrumentation FR-1000-01, Revision 0 Page 24 of 40

TABLE 2-1 INSTRUMENT INFORMATION E-600 S/N l Probe S/N (type) 1641 2255 (SPA-3) 1645 726560 (SPA-3) 1929 726561 (SPA-3) 2490 2254 (SPA-3) 2490 725328 (SPA-3) 2491 2254 (SPA-3) 2617 2254 (SPA-3) 2617 2255 (SPA-3) 2618 2055 (SPA-3) 2619 2255 (SPA-3) 2619 726554 (SPA-3) 2620 2055 (SPA-3) 2620 725890 (SPA-3) 2620 726554 (SPA-3) 2621 725890 (SPA-3) 2488 725328 (SPA-3) 2621 726560 (SPA-3)

IIPGe Detectors for Lab Analysis of Volumetric Samples I Detector Number MDC (pCi/g) l FSS_-1__ 0.04-0.11 Il_ FSS-2

_ 0.04-0.11 FR-1000-0I, Revision 0 Page 25 of 40

TABLE 2-2 INSTRUMENT SCAN MDC, DCGL, AND INVESTIGATION LEVEL Detector SPA-3 Comments Scan AMDC 5.9 Design Scan MDC, LTP (pCi/g) Table 5-6 (Reference 6)

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Investigation Level 12,160 cpm All grids except as noted below (Alarm setpoint) 14,615 cpm Block 1, All grids 14,215 cpm Block 2, All grids 12,735 cpm Block 3, All grids 13,135 cpm Block 4, All grids 10,600 cpm Block 5, Grids S222, S224, S225 10,600 cpm Block 9, Grids S462, S463, S464, S466 12,100 cpm Block 10, Grid S488 15,065 cpm Block 12, All Grids FR-1000-0I, Revision 0 Page 26 of 40

Attachment 3 Investigation Table FR-1000-01, Revision 0 Page 27 of 40

TABLE 3-1 INVESTIGATION TABLE Co-60 Uncertainty Cs-137 Uncertainty Sample Location pCi/g pCi/g PCi/g pCi/g XR100013SOOISSOOOO < 4.6913-02 N/A < 4.78E1-02 N/A XR100013SO02SSOOOO < 4.711E-02 N/A < 4.60E-02 N/A XR100013SO03SSOOOO < 4.1313-02 N/A 4.72E-02 2.28E-02 XR100013S018SSOOOO < 2.5313-02 N/A 4.05E-02 1.26E-02 XR100013S037SSOOOO < 4.711E-02 N/A < 4.57E-02 N/A XR100013S038SSOOOO < 5.011E-02 N/A < 5.1813-02 N/A XR100013S039SSOOOO < 5.811E-02 N/A < 6.47E-02 N/A XR100013SO40SSOOOO < 6.29E-02 N/A < 5.95E-02 N/A XR100013SO41SSOOOO < 6.90E-02 N/A < 6.3813-02 N/A XR100013S042SSOOOO < 5.84E-02 N/A < 5.8913-02 N/A XR100013SO47SSOOOO < 5.22E-02 N/A < 5.12E-02 N/A XR100013SO70SSOOOO < 4.85E-02 N/A < 4.8213-02 N/A XR100013S086SSOOOO < 4.20E-02 N/A < 4.58E-02 N/A XR100013S087SSOOOO < 5.4613-02 N/A < 5.76E-02 N/A XR100013S088SSOOOO < 4.98E-02 N/A < 5.2513-02 N/A XRIO013SO89SSOOOO < 4.41 E-02 N/A < 4.5213-02 N/A XR100013SO90SSOOOO < 4.511E-02 N/A < 4.5413-02 N/A XR100013SO91SSOOOO < 5.36E-02 N/A < 5.6413-02 N/A XR100013SO92SSOOOO < 4.08E-02 N/A 3.74E-02 2.16E-02 XR100013SO93SSOOOO < 5.28E-02 N/A 5.48E-02 2.5013-02 XR100013S094SSOOOO < 4.5713-02 N/A < 4.9313-02 N/A XR100013SO9SSSOOOO < 2.8913-02 N/A 2.78E-02 1.39E-02 XR100013S096SSOOOO < 1.9413-02 N/A 1.34E-02 7.12E-03 XR100013SO98SSOOOO < 5.6613-02 N/A < 5.611E-02 N/A XR100013SO99SSOOOO < 5.1513-02 N/A < 5.50E-02 N/A XR100013SlOISSOOOO < 4.8013-02 N/A < 4.5813-02 N/A XR100013SI03SSOOOO < 5.37E-02 N/A < 4.9913-02 N/A XR100013S119SSOOOO < 4.60E-02 N/A < 4.101E-02 N/A XR100013SI20SSOOOO < 5.3513-02 N/A < 5.3313-02 N/A XR100013SI24SSOOOO < 4.62E-02 N/A < 5.3513-02 N/A XR100013S153SSOOOO < 5.4813-02 N/A < 6.0013-02 N/A XR100013S156SSOOO0 < 5.77E-02 N/A < 5.64E-02 N/A XR100013S157SSOOOO < 5.9313-02 N/A < 5.78E-02 N/A XR100013S164SSOOOO < 6.1213-02 N/A < 5.9313-02 N/A XR100013S173SSOOO0 < 5.55E-02 NIA < 5.4313-02 N/A XR100013S175SSOOOO < 5.611E-02 N/A < 4.7813-02 N/A XR100013SI76SSOOOO < 4.4213-02 N/A < 4.4513-02 N/A XR100013SI77SSOOOO < 3.94E-02 N/A < 4.09E-02 N/A XR100013S178SSOOOO < 4.6413-02 N/A < 4.51 E-02 N/A XR100013SI79SSOOOO < 4.03E-02 N/A < 3.83E-02 N/A XR100013S183SSOOOO < 4.08E-02 N/A < 4.1813-02 N/A XR100013SI99SSOOOO < 3.9813-02 N/A < 4.4013-02 N/A FR-I 000-01, Revision 0 Page 28 of 40

Sample Location Co-60 Uncertainty Cs-137 Unccrtainty SpCi/g pCi/g pCi/g pci/g XR100013S203SSOOOO < 4.47E-02 N/A < 4.59E-02 N/A XR100013S204SSOOOO < 4.13E-02 N/A < 4.39E-02 N/A XR100013S205SSOOOO < 3.74E-02 N/A 5.26E-02 2.69E-02 XR100013S207SSOOOO < 4.26E-02 N/A < 4.29E-02 N/A XR1OOO13S21OSSOOOO < 2.51 E-02 N/A 1.19E-01 1.29E-02 XR100013S2 1 0SSOOOO < 2.59E-02 N/A < 2.60E-02 N/A XR]00013S212SSOOOO < 4.85E-02 N/A < 4.88E-02 N/A XR100013S213SSOOOO < 5.94E-02 N/A < 6.09E-02 N/A XR100013S213SSODUP < 5.99E-02 N/A < 6.00E-02 N/A XR100013S214SSOOOO < 5.16E-02 N/A < 5.25E-02 N/A XR100013S215SSOOOO < 6.79E-02 N/A < 6.06E-02 N/A XR100013S216SSOOOO < 5.1 lE-02 N/A < 6.13E-02 N/A XR100013S216SSODUP < 5.62E-02 N/A < 5.99E-02 N/A XR100013S217SSOOOO < 6.20E-02 N/A < 6.OOE-02 N/A XR100013S218SSOOOO < 5.29E-02 N/A < 5.24E-02 N/A XR100013S219SSOOOO < 5.90E-02 N/A < 5.90E-02 N/A XR100013S22OSSOOOO < 4.53E-02 N/A < 4.25E-02 N/A XR100013S222SSOOOO < 6.67E-02 N/A < 6.54E-02 N/A XR100013S223SSOOOO < 6.20E-02 N/A < 6.02E-02 N/A XRIOOO13S224SSOOOO < 2.35E-02 N/A 2.91E-02 1.56E-02 XR100013S225SSOOOO < 2.36E-02 N/A 2.78E-02 6.84E-02 XR100013S226SSOOOO < 5.76E-02 N/A < 5.90E-02 N/A XR100013S227SSOOOO < 6.OOE-02 N/A < 5.42E-02 N/A XR1OOO13S228SSOOOO < 2.36E-02 N/A 2.08E-02 1.2013-02 XR100013S229SSOOOO < 2.3713-02 N/A 5.56E-02 1.3 1E-02 XR100013S23OSSOOOO < 5.48E-02 N/A < 5.251E-02 N/A XR100013S231SSOOOO < 5.16E-02 N/A < 5.1413-02 N/A XR100013S232SSOOOO < 2.59E-02 N/A 3.71E-02 7.63E-03 XR1OOO13S232SSODUP < 5.48E-02 NIA < 6.48E-02 N/A XR100013S233SSOOOO < 2.40E-02 N/A 4.18E-02 1.38E-02 XR100013S234SSOOOO < 2.58E-02 N/A < 2.6213-02 N/A XR100013S235SSOOOO < 2.56E-02 N/A 2.88E-02 6.9413-03 XR100013S236SSOOOO < 2.5313-02 N/A 7.04E-02 2.02E-02 XR100013S237SSOOOO < 5.71 E-02 N/A 6.28E-02 3.14E-02 XR100013S238SSOOOO < 2.23E-02 N/A 1.54E-02 1.6913-02 XR1OOO13S239SSOOOO < 2.5213-02 N/A < 2.66E-02 N/A XR100013S24OSSOOOO < 2.4513-02 N/A 5.28E-02 1.4913-02 XR100013S24ISSOOOO < 2.57E-02 N/A 3.06E-02 1.28E-02 XR100013S242SSOOOO < 2.51 E-02 N/A 3.77E-02 2.2513-02 XR100013S243SSOOOO < 5.0513-02 N/A < 4.99E-02 N/A XR100013S244SSOOOO < 2.64E-02 N/A 2.58E-02 1.23E-02 XR100013S245SSOOOO < 2.4813-02 N/A < 2.44E-02 N/A XR100013S246SSOOOO < 4.74E-02 N/A < 4.5813-02 N/A XR100013S247SSOOOO < 2.59E-02 N/A 3.49E-02 7.91 E-03 XR100013S248SSOOOO < 2.3713-02 N/A 6.02E-02 2.76E-02 XR100013S249SSOOOO < 4.96E-02 N/A < 5.05E-02 N/A FR-1000-0I, Revision 0 Page 29 of 40

Co-60 Uncertainty Cs-137 Uncertainty Sample Location pCi/g pCi/g pCi/g pCi/g XR100013S25OSSOOOO < 2.61E-02 N/A 1.92E-02 6.54E-03 XR100013S25ISSOOOO < 2.56E-02 N/A 2.39E-02 6.87E-03 XR100013S252SSOOOO < 2.59E-02 N/A 5.57E-02 2.98E-02 XR100013S253SSOOOO < 2.63E-02 N/A 3.55E-02 1.45E-02 XR100013S254SSOOOO < 2.59E-02 N/A 7.05E-02 1.54E-02 XR100013S255SSOOOO < 2.59E-02 N/A 4.OOE-02 1.32E-02 XR100013S256SSOOOO < 6.64E-02 N/A 4.57E-02 2.74E-02 XR100013S257SSOOOO < 2.52E-02 N/A 3.85E-02 1.39E-02 XR100013S258SSOOOO < 3.56E-02 N/A 4.39E-02 1.38E-02 XR100013S26OSSOOOO < 2.21E-02 N/A 1.72E-02 8.57E-03 XR100013S261SSOOOO < 2.60E-02 N/A < 2.51E-02 N/A XR100013S262SSOOOO < 4.68E-02 N/A < 4.13E-02 N/A XR100013S263SSOOOO < 2.41E-02 N/A < 2.47E-02 N/A XRIOO13S264SSOOOO < 2.53E-02 N/A < 2.4 1E-02 NIA XR100013S271SSOOOO < 2.58E-02 N/A 5.21E-02 2.76E-02 XR100013S273SSOOOO < 2.60E-02 N/A 2.66E-02 1.36E-02 XR100013S276SSOOOO < 2.53E-02 N/A < 2.40E-02 N/A XR100013S277SSOOOO < 2.55E-02 N/A < 2.73E-02 N/A XR100013S278SSOOOO < 7.25E-02 N/A < 7.42E-02 N/A XR100013S279SSOOOO < 8.93E-02 N/A 9.33E-02 3.37E-02 XR100013S283SSOOOO 3.83E-02 1.76E-02 7.07E-02 1.75E-02 XR100013S284SSOOOO < 2.59E-02 N/A l.91E-02 1.lOE-02 XR100013S285SSOOOO < 2.64E-02 N/A 3.38E-02 7.26E-03 XR100013S286SSOOOO < 5.60E-02 N/A < 5.17E-02 N/A XR100013S287SSOOOO < 2.53E-02 N/A 3.10E-02 7.38E-03 XR100013S288SSOOOO < 5.91E-02 N/A < 5.81E-02 N/A XR100013S289SSOOOO < 2.62E-02 N/A 2.28E-02 1.22E-02 XR100013S29OSSOOOO < 2.61E-02 N/A 2.38E-02 1.1 9E-02 XR100013S29ISSOOOO < 2.56E-02 N/A 4.24E-02 2.58E-02 XR100013S292SSOOOO < 2.58E-02 N/A 3.95E-02 1.30E-02 XR100013S293SSOOOO < 2.54E-02 N/A 4.23E-02 1.40E-02 XR100013S294SSOOOO < 2.60E-02 N/A 8.52E-02 2.93E-02 XR100013S295SSOOOO < 2.60E-02 N/A 3.43E-02 7.79E-03 XR100013S297SSOOOO < 2.59E-02 N/A < 2.47E-02 N/A XR1OOO13S302SSOOOO < 2.61E-02 N/A < 2.67E-02 N/A XR100013S306SSOOOO < 2.5413-02 N/A < 2.74E-02 N/A XR100013S307SSOOOO < 2.58E-02 N/A 3.09E-02 2.23E-02 XR100013S308SSOOOO < 5.9713-02 N/A < 6.21E-02 N/A XR100013S309SSOOOO < 2.5413-02 N/A 3.38E-02 1.38E-02 XR100013S31ISSOOOO < 2.5513-02 N/A 3.41E-02 1.40E-02 XR100013S313SSOOOO < 2.63E-02 N/A 3.27E-02 1.45E-02 XR100013S314SSOOOO < 2.55E-02 N/A 2.98E-02 1.23E-02 XR100013S315SSOOOO < 2.611E-02 N/A 3.08E-02 7.58E-03 XR100013S317SSOOOO < 2.611E-02 N/A 2.99E-02 1.311E-02 XR100013S321SSOOOO < 2.59E-02 N/A 3.26E-02 1.92E-02 XR100013S323SSOOOO < 2.40E-02 N/A 3.06E-02 1.79E-02 FR-I000-Ol, Revision 0 Page 30 of 40

Sample Location Co-60 Uncertainty Cs-137 Uncertainty pCi/g pCilg pCi/g pci/g XRIOOO13S326SSOOOO < 2.57E-02 N/A 3.41 E-02 1.57E-02 XR100013S327SSOOOO < 2.59E-02 N/A 7.08E-02 1.49E-02 XR]OOO13S328SSOOOO < 2.58E-02 N/A 6.76E-02 9.80E-03 XR100013S329SSOOOO < 2.41 E-02 N/A 5.48E-02 1.38E-02 XR100013S33OSSOOOO < 2.50E-02 N/A 4.73E-02 1.38E-02 XR100013S331SSOOOO < 2.5613-02 N/A 6.25E-02 1.97E-02 XR100013S332SSOOOO < 2.61E-02 N/A 6.O1E-02 1.33E-02 XR100013S333SSOOOO < 2.4513-02 N/A 5.57E-02 1.4713-02 XR100013S334SSOOOO < 2.6213-02 N/A 2.76E-02 1.26E-02 XR100013S335SSOOOO < 2.60E-02 N/A 2.46E-02 1.3513-02 XR100013S336SSOOOO < 2.5513-02 N/A 4.60E-02 8.65E-03 XR100013S337SSOOOO < 2.53E-02 N/A 3.07E-02 1.46E-02 XR100013S340SSOOOO < 6.04E-02 N/A 5.42E-02 2.8913-02 XR100013S341SSOOOO < 2.4913-02 N/A 8.12E-02 2.8313-02 XR100013S342SOOOOA < 2.38E-02 N/A 7.11E-02 9.33E-03 XR1OOO13S342SOOOOB < 3.3513-02 N/A 9.61 E-02 1.20E-02 XR100013S343SSOOOO < 2.5213-02 N/A 4.27E-02 1.3313-02 XR100013S345SSOOOO < 2.7213-02 N/A 6.15E-02 9.6213-03 XR1OOO13S346SSOOOO < 2.28E-02 N/A 3.85E-02 1.39E-02 XR1O0O13S346SSODUP < 6.6213-02 N/A < 7.08E-02 N/A XR100013S347SSOOOO < 2.411E-02 N/A I.llE-0 1.6913-02 XR100013S348SSOOOO < 2.5713-02 N/A 4.81E-02 1.33E-02 XR100013S349SSOOOO < 2.5713-02 N/A 6.75E-02 1.3313-02 XR100013S35OSSOOOO < 2.3613-02 N/A 6.10E-02 2.50E-02 XR100013S351SSOOOO < 2.4413-02 N/A 5.97E-02 2.67E-02 XR100013S352SSOOOO < 5.96E-02 N/A 5.56E-02 2.90E-02 XR100013S353SSOOOO < 2.39E-02 N/A 3.52E-02 1.23E-02 XR100013S354SSOOOO < 2.4513-02 N/A 4.28E-02 1.4013-02 XR100013S356SSOOOO < 5.98E-02 N/A 6.08E-02 3.19E-02 XR100013S358SSOOOO < 2.2613-02 N/A 4.87E-02 8.1213-03 XR100013S359SSOOOO < 2.52E-02 N/A 3.44E-02 1.4813-02 XR100013S36OSSOOOO < 2.41E-02 N/A 4.75E-02 8.33E-03 XR100013S36ISSOOOO < 2.4513-02 N/A 3.73E-02 2.95E-02 XR100013S362SSOOOO < 2.5313-02 N/A 3.85E-02 2.42E-02 XR1OOO13S363SSOOOO < 2.44E-02 N/A 1.99E-02 1.20E-02 XR100013S363SSODUP < 6.111E-02 N/A < 6.08E-02 N/A XR100013S364SSOOOO < 6.4913-02 N/A < 5.99E-02 N/A XR100013S365SSOOOO < 2.66E-02 N/A < 2.711E-02 N/A XR100013S366SSOOOO < 2.48E-02 N/A < 2.61E-02 N/A XR100013S367SSOOOO < 2.44E-02 N/A 3.49E-02 7.09E-03 XR100013S368SSOOOO < 6.04E-02 N/A < 6.1013-02 N/A XR100013S369SSOOOO < 2.41 E-02 N/A 2.26E-02 1.22E-02 XR1OOO13S37OSSOOOO < 2.50E-02 N/A 2.29E-02 1.0513-02 XR100013S371SSOOOO < 2.75E-02 N/A < 2.84E-02 N/A XR100013S372SSOOOO < 6.06E-02 N/A < 7.0713-02 N/A XR100013S374SSOOOO < 6.73E-02 N/A < 6.74E-02 N/A FR-1000-01, Revision 0 Page 31 of 40

Co-60 Uncertainty Cs-137 Uncertainty Sample Location pCi/g pCi/g pCi/g pCi/g XR100013S375SSOOOO < 2.53E-02 N/A 5.39E-02 1.40E-02 XR100013S375SSODUP < 3.81 E-02 N/A 4.28E-02 1.83E-02 XR100013S376SSOOOO < 2.60E-02 N/A 4.28E-02 1.33E-02 XR100013S376SSODUP < 6.31 E-02 N/A < 6.79E-02 N/A XR100013S377SSOOOO < 2.63E-02 N/A 6.07E-02 l.50E-02 XR100013S378SSOOOO < 2.65E-02 N/A 6.04E-02 1.48E-02 XR100013S379SSOOOO < 2.60E-02 N/A 4.22E-02 1.40E-02 XR100013S38OSSOOOO < 2.37E-02 N/A 3.44E-02 1.16E-02 XR100013S381SSOOOO < 2.84E-02 N/A 1.33E-01 1.88XE-02 XR100013S38ISSODUP < 5.14E-02 N/A 1.24E-01 3.59E-02 XR1OOO13S382SSOOOO < 2.37E-02 N/A 5.42E-02 1.26E-02 XR100013S383SSOOOO < 2.36E-02 N/A 2.99E-02 1.30E-02 XR 100013S384SSOOOO 3.01E-02 9.66E-03 6.04E-02 8.33E-03 XR100013S385SSOOOO 4.37E-02 1.47E-02 5.61 E-02 1.43E-02 XR100013S386SSOOOO < 2.56E-02 N/A 3.90E-02 1.35E-02 XR1OOO13S387SSOOOO < 2.41 E-02 N/A 4.74E-02 7.85E-03 XR100013S388SSOOOO < 5.77E-02 N/A < 6.92E-02 N/A XRIOOO13S389SSOOOO < 2.41 E-02 N/A 5.65E-02 2.54E-02 XR100013S39OSSOOOO < 2.40E-02 N/A 1.56E-02 1.49E-02 XR100013S39OSSODUP < 5.51E-02 N/A < 5.96E-02 -N/A XR 1000]3S39 ISSOOOO < 2.61 E-02 N/A 3.57E-02 1.45E-02 XR100013S392SSOOOO < 2.63E-02 N/A 5.04E-02 1.75E-02 XR100013S393SSOOOO < 2.811E-02 N/A 2.44E-02 1.92E-02 XR100013S394SSOOOO < 2.69E-02 N/A < 2.86E-02 N/A XR100013S396SSOOOO < 2.72E-02 N/A 2.87E-02 7.93E-03 XR1OOO13S397SSOOOO < 6.60E-02 N/A < 6.04E-02 N/A XR100013S398SSOOOO < 2.57E-02 N/A 2.70E-02 1.35SE-02 XR100013S399SSOOOO < 6.78E-02 NIA < 6.25E-02 N/A XR100013S400SSOOOO < 2.94E-02 N/A < 2.97E-02 N/A XR100013S40ISSOOOO < 3.00E-02 N/A < 3.19E-02 N/A XR100013S40ISSODUP < 5.18E-02 N/A < 5.24E-02 N/A XR100013S402SSOOOO < 2.89E-02 N/A 4.28E-02 8.97E-03 XR100013S403SSOOOO < 2.71E-02 N/A < 2.81E-02 N/A XR100013S404SSOOOO < 5.47E-02 N/A < 5.51E-02 N/A XR100013S405SSOOOO < 3.04E-02 N/A < 3.06E-02 N/A XR1OOO13S406SSOOOO < 2.83E-02 N/A < 2.90E-02 N/A XR100013S407SSOOOO < 3.1OE-02 N/A < 3.14E-02 N/A XR100013S408SSOOOO < 2.64E-02 N/A 2.79E-02 6.92E-03 XR100013S409SSOOOO < 6.81E-02 N/A < 6.50E-02 N/A XR100013S409SSODUP < 5.30E-02 N/A < 5.05E-02 N/A XR1OOO13S41OSSOOOO < 3.OOE-02 N/A < 2.79E-02 N/A XRI000I3S41 ISSOOOO < 2.82E-02 N/A 2.99E-02 7.80E-03 XR100013S412SSOOOO < 2.70E-02 N/A < 2.76E-02 N/A XR100013S413SSOOOO < 6.38E-02 N/A < 6.61E-02 N/A XR100013S414SSOOOO < 2.80E-02 N/A < 2.85E-02 N/A XR1OOO13S415SSOOOO < 7.34E-02 N/A < 7.77E-02 N/A FR-1000-01, Revision 0 Page 32 of 40

Sample Location Co-60 Uncertainty Cs-137 Uncertainty SpCilg pCi/g pCi/g pCi/g XR1OOO13S416SSOOOO < 2.67E-02 N/A < 2.82E-02 N/A XR100013S417SSOOOO < 3.01E-02 N/A < 2.85E-02 N/A XR100013S418SSOOOO < 2.88E-02 N/A < 2.92E-02 N/A XR100013S419SSOOOO < 6.20E-02 N/A < 6.63E-02 N/A XR100013S42OSSOOOO < 3.15E-02 N/A 2.26E-02 2.08E-02 XR100013S421SSOOOO < 2.93E-02 N/A 2.18E-02 1.20E-02 XR100013S422SSOOOO < 7.61E-02 N/A < 6.70E-02 N/A XR100013S423SSOOOO < 3.06E-02 N/A < 2.96E-02 N/A XR100013S424SSOOOO < 5.93E-02 N/A < 6.62E-02 N/A XR100013S425SSOOOO < 3.1OE-02 N/A < 3.09E-02 N/A XR100013S426SSOOOO < 3.14E-02 N/A < 3.14E-02 N/A XR100013S427SSOOOO < 3.74E-02 N/A < 3.39E-02 N/A XR100013S428SSOOOO < 5.53E-02 N/A < 5.30E-02 N/A XR100013S429SSOOOO < 2.58E-02 N/A 2.55E-02 7.16E-03 XR100013S43OSSOOOO < 2.80E-02 N/A < 2.99E-02 N/A XR100013S431SSOOOO < 3.00E-02 N/A 2.13E-02 7.61E-03 XR100013S432SSOOOO < 3.00E-02 N/A < 3.06E-02 N/A XRIOOO13S433SSOOOO < 6.41E-02 N/A < 6.09E-02 N/A XR100013S434SSOOOO < 7.14E-02 N/A < 7.13E-02 N/A XRIOOO13S435SSOOOO < 2.54E-02 N/A < 2.55E-02 N/A XR100013S436SSOOOO < 2.30E-02 N/A < 2.38E-02 N/A XR1OOO13S437SSOOOO < 6.35E-02 N/A < 6.76E-02 N/A XRIOOO13S438SSOOOO < 2.66E-02 N/A < 2.70E-02 N/A XR100013S439SSOOOO < 5.31E-02 N/A < 5.21E-02 N/A XR100013S455SSOOOO < 2.63E-02 N/A 1.06E-01 1.74E-02 XR1OOO13S458SSOOOO < 2.39E-02 N/A 3.98E-02 7.87E-03 XR100013S46ISSOOOO < 2.69E-02 N/A 2.07E-02 1. IIE-02 XR100013S462SSOOOO < 2.44E-02 N/A 2.11E-02 1.07E-02 XR100013S463SSOOOO < 2.49E-02 N/A 2.67E-02 7.37E-03 XR100013S464SSOOOO < 6.20E-02 N/A < 5.52E-02 N/A XR100013S465SSOOOO < 2.80E-02 N/A < 2.69E-02 N/A XR100013S466SSOOOO < 2.44E-02 N/A 3.41E-02 7.45E-03 XR100013S477SSOOOO < 5.91E-02 N/A < 5.43E-02 N/A XR100013S478SSOOOO < 2.61E-02 N/A 2.17E-02 1.46E-02 XR1OOO13S488SSOOOO < 2.46E-02 N/A < 2.80E-02 N/A XR100013S505SSOOOO < 2.45E-02 N/A 2.92E-02 1.22E-02 XR100013S507SSOOOO < 2.51E-02 N/A 1.99E-02 6.5 1E-03 XR100013S508SSOOOO < 2.66E-02 N/A < 2.70E-02 N/A XR100013S509SSOOOO < 2.48E-02 N/A 3.38E-02 1.21E-02 XR100013S5IOSSOOOO < 2.95E-02 N/A < 2.84E-02 N/A XR100013S5I ISSOOOO < 2.57E-02 N/A 3.38E-02 7.84E-03 XR100013S512SSOOOO < 2.65E-02 N/A 3.08E-02 7.48E-03 XR100013S513SSOOOO < 2.67E-02 N/A 3.22E-02 1.53E-02 XR100013S5I5SSOOOO < 6.65E-02 N/A < 6.37E-02 N/A XR100013S517SSOOOO < 2.66E-02 N/A 2.39E-02 7.56E-03 XR100013S518SSOOOO < 2.92E-02 N/A < 2.95E-02 N/A FR-I000-OI, Revision 0 Page 33 of 40

Location Co-60 Uncertainty Cs-137 Uncertainty pCi/g pCi/g pCilg pCi/g XR]OOO13S5]9SSOOOO < 7.26E-02 N/A < 6.98E-02 N/A XR100013S526SSOOOO < 4.55E-02 N/A < 4.58E-02 N/A XR100013S527SSOOOO < 4.87E-02 N/A < 4.94E-02 N/A XR100013S528SSOOOO < 4.98E-02 N/A < 5.06E-02 N/A XR100013S529SSOOOO < 6.20E-02 N/A < 6.29E-02 N/A XR1OOO13S53OSSOOOO < 4.59E-02 N/A < 4.51E-02 N/A XR100013S531SSOOOO < 5.17E-02 N/A < 4.97E-02 N/A XR100013S532SSOOOO < 4.90E-02 N/A < 4.67E-02 N/A XR100013S533SSOOOO < 4.57E-02 N/A < 5.05E-02 N/A XR100013S534SSOOOO < 5.21E-02 N/A < 4.86E-02 N/A XR100013S535SSOOOO < 4.57E-02 N/A < 5.01E-02 N/A XR100013S536SSOOOO < 4.63E-02 N/A < 5.06E-02 N/A XR100013S537SSOOOO < 5.78E-02 N/A < 5.95E-02 N/A XR100013S538SSOOOO < 4.87E-02 N/A 3.54E-02 1.43E-02 XR100013S539SSOOOO < 5.24E-02 N/A < 5.18E-02 N/A XR100013S54OSSOOOO < 3.89E-02 N/A < 4.65E-02 N/A XR100013S54ISSOOOO < 4.OOE-02 N/A < 4.65E-02 N/A XR100013S542SSOOOO < 5.22E-02 N/A < 4.77E-02 N/A XR100013S543SSOOOO < 5.1613-02 N/A < 4.74E-02 N/A XR1OOO13S545SSOOOO < 4.22E-02 N/A < 4.3713-02 N/A XR100013S546SSOOOO < 4.16E-02 N/A < 4.51 E-02 N/A XR100013S547SSOOOO < 4.45E-02 N/A < 4.29E-02 N/A XR100013S548SSOOOO < 4.72E-02 N/A < 4.3713-02 N/A XR1000i3S549SSOOOO < 4.70E-02 N/A < 4.84E-02 N/A XR100013S55OSSOOOO < 4.50E-02 N/A < 4.8513-02 N/A XR1OOO13S551SSOOOO < 4.58E-02 N/A < 5.OOE-02 N/A XR100013S552SSOOOO < 5.4613-02 N/A < 4.71E-02 N/A XR100013S553SSOOOO < 3.24E-02 NIA 2.44E-02 1.51IE-02 XR100013S554SSOOOO < 5.15E-02 N/A < 4.6613-02 N/A XRIOOO13S55SSOOOO < 4.65E-02 NIA < 5.17E-02 N/A XR100013S556SSOOOO < 4.87E-02 N/A < 4.98E-02 N/A XR]00013S557SS0000 < 4.77E-02 NIA < 5.3013-02 N/A XR100013S558SSOOOO < 2.411E-02 N/A 2.38E-02 1.01E-02 XR1OOO13S559SSOOOO < 3.91E-02 N/A < 4.14E-02 N/A XR100013S56OSSOOOO < 3.76E-02 N/A < 4.05E-02 N/A XR100013S561SSOOOO < 5.27E-02 N/A < 4.78E-02 N/A XR100013S562SSOOOO < 4.5013-02 N/A < 4.811E-02 N/A XR100013S563SSOOOO < 4.07E-02 N/A < 4.24E-02 N/A XR100013S564SSOOOO < 4.2813-02 N/A < 4.5813-02 N/A XR100013S565SSOOOO < 3.97E-02 N/A < 4.44E-02 N/A XR100013S566SS0000 < 4.3013-02 N/A < 4.47E1-02 N/A XR100013S567SS0000 < 5.05E-02 N/A < 4.93E-02 N/A XR100013S568SSOOOO < 4.50E-02 N/A < 4.7613-02 N/A XR100013S569SSOOOO < 4.12E-02 N/A < 3.9213-02 N/A XR100013S57OSSOOOO < 4.32E-02 N/A < 4.16E-02 N/A XR100013S57ISSOOOO < 3.98E-02 N/A < 3.7313-02 N/A FR-1000-01, Revision 0 Page 34 of40

Sample Location Co-60 Uncertainty Cs-137 Uncertainty pCi/g pCi/g pCilg pCilg XR100013S572SSOOOO < 5.88E-02 N/A < 5.5 1E-02 N/A XR100013S574SSOOOO < 3.31E-02 N/A < 3.59E-02 N/A XR100013S575SSOOOO < 4.46E-02 N/A < 4.02E-02 N/A XR100013S576SSOOOO < 4.92E-02 N/A < 4.42E-02 N/A XR100013S577SSOOOO < 5.47E-02 N/A < 5.69E-02 N/A XR100013S578SSOOOO < 4.61E-02 N/A < 4.84E-02 N/A XR100013S579SSOOOO < 5.58E-02 N/A < 5.80E-02 N/A XR100013S58OSS0000 < 4.78E-02 N/A < 5.02E-02 N/A XR100013S594SSOOOO < 4.75E-02 N/A < 4.85E-02 N/A NOTE: The sample location corresponds to the grid number.

FR-I 000-01, Revision 0 Page 35 of 40

Attachment 4 Statistical Data FR-1000-01, Revision 0 Page 36 of 40

Survey Package FR-1000 Unit I UNITY Soil Sign Test Summary 9>--z.T4<l-'x4r.-KEv tuatioin Input a u is HS'<;  ;;! X-- rI ,.,i Survey Package: FR-1000 Foxbird Island Survey Unit: 01 Evaluator: GP DCGLW: 1.OOE+00 Unitized DCGLemc: N/A LBGR: 5.002-01 Sigma: 1.14E-01 Type I error: 0.05 Type II error: 0.05 Nuclide: UNITY Soil Type: N/A Zl,: 1.645 Z1.0: 1.645 Sign p: 0.99865 Calculated Relative Shift: - 4.3 Relative Shift Used: 3.0 Uses 3.0 if Relative Shift is >3 N-Value: 11 N-Value+20%: 14

.2- , S a apleD ayalues* /;I'Q:e r 5 Number of Samples: . 14 Median: . -5.562-02 Mean: 1.01E-01 Net Sample Standard Deviation: 1.17E-01 Total Standard Deviation: ..-- 1.17E-01 SRSS Maximum: ale i4 24E-01 aid+},a ,%;<--.Sgn, est RsLtSU u a A5>,; 1t X Y Adjusted N Value:T4 S- Value: 1 14 Critical Value:; 10 Sign test results:, I .Pas

^,t6.;t:'.;> Criterlaabtlsfaldtlin}3mfti` ~ i6 Sufficient samples collected: . ,'Pass Maximum value <DCGL,: >>:, Pass Median value <DCGLwg .. fr,' Pas-Mean value <DCGLw: - FPass Maximum value <DCGLa:,.: f Pass Total Standard Deviation <=Sigma: in:v-vestigaie See section F of the Release Record Criteria comparison results: Ajf .investigate See section I of the Release Record The survey unit passes all conditions:lJ¢;,$,'investigate The SU passes FR-1OOO-SUI-SoiISign-UNITY FR-1000-01, Revision 0 12/304 11:57AM Page 37 of40

FR-1000 SU-1 Quantile Plot 0.45 0.4 0.35 C

V 0c U 0.3 0- 0.25 x ,,

• Activity (unitized) so 0 0

4-W 0.2 ,4 l-Median (unitized) I 4-#a 0 0.15 0.1 4

0.05 0

0 25 50 75 100 Percent

One-Sample T-Test Report Page/Date/Time 2 12/3/04 11:47:20AM Database Variable C2 Plots Section Histogram of FA-1000, SU-1 10M

0. 8-E w

5.

C)

.0 E

M 3. I.A.

01 0.3 0.4 0.5 Activity (unitized)

FR-IOO0-OI, Revision 0 Page 39 of 40

One-Sample T-Test Power Analysis Page/Date/Time 2 12/3/04 11:48:34 AM Chart Section Retrospective Power Curve 1.0. .\ . -

0.8- .. .. I..

L,, 0.6 - . m.

0.4-.

0.2- , ---

. . , I

, *'. X 0.0 I 0.1 0.3 0.5 0.7 0.9 1.1 Survey Unit Mean (unitized)

FR-1000-O, Revision 0 Page 40 of 40