ML17065A066

Final Status Survey Summary Report, January 30, 2017, Iosb Outside Area Class 3, Survey Unit F8300143

ML17065A066
Person / Time
Site:	Rancho Seco
Issue date:	01/30/2017
From:	Sacramento Municipal Utility District (SMUD)
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML17065A032	List: ML17065A034 ML17065A035 ML17065A036 ML17065A037 ML17065A038 ML17065A040 ML17065A041 ML17065A046 ML17065A047 ML17065A048 ML17065A049 ML17065A051 ML17065A052 ML17065A053 ML17065A054 ML17065A055 ML17065A056 ML17065A057 ML17065A058 ML17065A059 ML17065A060 ML17065A061 ML17065A063 ML17065A064 ML17065A065 ML17065A066 ML17065A068 ML17065A069 ML17065A070 ML17065A071 ML17065A072
References
DPG 17-038
Download: ML17065A066 (32)

Text

Rancho Seco Final Status Survey Summary Report January 30, 2017 IOSB Outside Area Class 3 Survey Unit F8300143 Approved By: 2 Ab, t't.,.._

Manage; ancho Seco Assets Date: ::z&ft.,,

• FINAL STATUS SURVEY F8300143 Survey Unit:

F8300143, Interim Onsite Storage Building (IOSB) Outside Area Class 3 Survey Unit

Description:

Operating History: Designed primarily to store packaged radioactive waste containers safely, protected from the elements, and maintain radiological dose as low as reasonably achievable (ALARA), The IOSB possibly stored media of many types, including filters, resins, contaminated chemicals, DAW, activated reactor components, contaminated plant components and other contaminated items.

The area immediately adjacent to the IOSB structure is an asphalt pavement surface. The outside perimeter of the asphalt at the interface with the surrounding earthen berm is a thin layer of gunite. The gunite strip is to provide an amount of erosion protection to the outer soil perimeter. The berm, rather significant grade in some locations extends to the IOSB perimeter chain link boundary. The total surface including the IOSB structure within the boundary fence is approximately 83,387 ft 2 (1.91 acres).

Site Characterization: Based upon the scanning results of the outside asphalt area an elevated area was identified on the asphalt next to the IOSB. Certain spots in the area exceeded the DCGLw but not the DCGLEMC* The area required remediation. The Outside area was divided into a small Class 1 Survey Unit, buffered by a Class 2 Survey Unit. The remainder of the outside area was designated as a Class 3 Survey Unit and is the subject of this report.

Survey Unit Design Information:

The Survey Unit Design Parameters are presented in Table 1 below. The survey unit and measurement locations are depicted on the maps in Attachment 1. Static measurement locations were randomly determined and approximately 45% of the area scanned by gamma scanning. A total of 7 soil samples were collected from the berm area and analyzed by gamma spectroscopy at an offsite laboratory. Soil sample data was compared directly to the cesium 137 DCGLw for soil established in the RSLTP of 52 picocuries per gram (pCi/g). Gamma scanning data was analyzed by determining data points that exceeded a level of 3z. The instrumentation used for the survey along with the MDC values are 1isted in Table 2-1Attachment2.

FSS Outside Area Class 3 F8300143

FINAL STATUS SURVEY F8300143 Table 1, Survey Unit Design Parameters

.. :,i;va1ua-ti'i>l1'1ri'Blifv~foe$ .. . ~"-

comro~nts* . *. .

Survey Package: F830 Outside Survey Unit: 14 Class 03 SU Area (m 2) 5,853 Evaluator: JR DCGLw: 43,000 Gross Activity DCGL Area Factor NA Class 3 Design DCGLemc (dpm/100cm 2 ): NA Class 3 LBGR: 21,500 Default 50% DCGL=

Sigma: 513 Scoping Survey Type I error: 0.05 Type II error: 0.05 Predominant Nuclide Cs-137 Sample Area (m2) N/A Total Instrument Efficiency: 0.129 Total Area Scanned (m 2): 2,643

.... Includes gamma scan of soil and Scan Coverage (%)  : . *459)0" asphalt Choosing 'N/A' sets material Material Type: N/A background to "O" ,

• ca1c.ui~t~cf Vc:l1u~s*:* :*  ::_'>'.*. ~ .. **. Com;rrieriJs . ..

Z1-a: 1.645 Z1-a: 1:645 Sign p: 0.99865 Calculated Relative Shift: 41.9 Relative Shift Used: 3.0 Uses 3.0 if Relative Shift >3 N-Value: 11 N-Value+20%: 14 Survey Results:

A total of 15 direct measurements were made in F8300143 on the asphalt and gunite surface and a total of seven soil samples were collected from the berm area. The results of the static measurements from the asphalt and gunite are shown in Table 2. All of the static measurements were less than the DCGL. All soil sample results were flagged as non-detect with results less than the MDC of l.OE-7 microcuries per gram (uCi/g) or 0.1 pCi/g. The results of the soil samples are contained in Appendix 2 of this report. The maximum z-score obtained from the gamma scanning was 1.17.

2 FSS Outside Area Class 3 F8300143

FINAL STATUS SURVEY F8300143 Table 2, Static Measurement Results Number

.*, .-* ~arnpl~t

,,., .. . * .** :. J3eta (dpm) a~ta(dpm) 1 F8300143A00002 393 2,977 2 F8300143A00004 331 2,508 3 F8300143A00006 340 2,576 4 F8300143A00007 356 2,697 5 F8300143K00011 1 399 3,023 6 F8300143A00012 366 2,773 7 F8300143A00013 352 2,667 8 F8300143A00015 324 2,455 9 F8300143A00016 328 2,485 10 F8300143A00017 339 2,568 11 F8300143A00018 341 2,583 12 F8300143A00019 407 3,083 13 F8300143A00020 362 2,742 14 F8300143A00021 301 2,280 15 F8300143A00022 360 2,727 1 Measurement collected on gunite Table 3 co11tains the statistical summary of the static measurement data for the Outside Area Class 3.

Table 3, Beta Summary Statistics Beta Static Outside Mean 2,676 Median 2,667 Standard Deviation 223 Minimum 2,280 Maximum 3,083 Count 15

.) FSS Outside Area Class 3 F8300143

FINAL STATUS SURVEY F8300143

'fable 4 list the soil sample results with the associated gamma static measurement.

Table 4, Soil Sample Results (pCi/g) and Gamma Static Measurement Gamma:

Sample Cs 137 Uncertainity MDA Static Number (pCi/g) (+/-) (pCi/g)

(cpm)

F8300143-1

• 9.37E-03 3.81 E+08 7.56E-02 6,763 F8300143-3 -3.07E-02 3.91 E-08 6.56E-02 6,561 F8300143-5 4.29E-02 4.43E-08 5.75E-02* 6,838 F8300143-8 -3.75E-03 4.08E-08 8.10E-02 7,322 F8300143-9 2.27E-02 4.37E-08 9.03E-02 6,866 F8300143-10 5.95E-02 1 3.52E-08 3.20E-02 6,936 F8300143-14 5.92E-02 2 5.20E-08 4.86E-02 6,859 1 Data rejected due to no valid peak 2 Data was rejected due to hiah countina uncertainty Survey Unit Data Assessment:

The survey design required 14 static measurements for the Sign Test. A total of 15 static measurements were collected on the asphalt and gunite and a total of seven soil samples were collected from the berm. For the static measurements, the critical value and the results of the Sign Test are presented in Table 5. The sample mean and median values were less than the DCGLw. The sample standard deviation was less than the design standard deviation but both values of sigma resulted in a relative shift greater than three (3), no additional samples were required. All soil sample results were non-detect and less than the DCGLw of 52 pCi/g. Since the soil results were non-detect use of statistical evaluation tools (i.e., Sign or WRS tests) is not required to demonstrate that the survey unit meets the criteria for unrestricted release (MARSSIM Section 8.2, Table 8.2).

Table 5, Data Assessment Results

. *...,..*. *.1 '

Number of Samples: '* .15 Median: 2,667 Mean: 2,676 Static Data Standard Deviation: 223 Maximum: 3,083 Adjusted N Value: 14 S+ Value: 15 Critical Value: 10 4 FSS Outside Area Class 3 F8300143

FINAL STATUS SURVEY F8300143

. .. ' *, ~ . ~. " .

Sufficient samples collected: Pass Maximum value <DCGLw: Pass Median value <DCGLw: *Pass Mean value <DCGLw: Pass Maximum value <DCGLemc: N/A Sign test results: Pass

.. *... **..**,*..... ,*:.* ..'"::**** .. **F*1n*a*1**s* t*a**:t*u*.s.. .*: ,. *... *.:;,.:,

• ' ....**\:, ...,...'.**:*=~*,: .: *** * *. :** *.:'.*.*'co'**m**.,me

• '? ***. ,....

. "_'. nts* '.:.:.

The survey unit passes all conditions: Pass Survey Unit Investigations and Results:

No investigations were required for either direct or scan measurements and no investigation results are reported.

ALARA Statement:

As stated in Chapter 4 of the LTP, as long as the residual activity within the survey unit is less than the DCGL, the ALARA criterion has been met.

Changes in Initial Survey Unit Assumptions:

The survey unit was designed as a Class 3 survey and the sample results are consistent with that classification. No individual measurement exceeded the DCGL. No potential areas of elevated activity were detected.

==

Conclusion:==

The FSS of this survey unit was properly designed as a Class 3 survey based on the results of the investigation survey. The required number of direct measurements was made and the scan coverage met the requirement of Table 5-6 of the LTP. All of the static measurements were less than the DCGLw. No investigations were required. All soil sample results were flagged as non-detect with results less than the MDC of l .OE-7 microcuries per gram (uCi/g) or 0.1 pCi/g.

The static 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.

It is concluded that survey unit F8300143 meets the release criteria of 10CFR20.l402.

5 FSS Outside Area Class 3 F8300l43

Attachment 1 Maps January 30, 2017 Survey Unit F8300143

N F8300143S00003 F8300143S00009

• Cs-137=-3.07E-02 pCi/g Cs-137=2.27E-02 pCi/g F8300143S00014 Cs-137= 5 .91E-02 pCi/g 2 s

F8300143S00008

• Cs-137=-3.75E-03 pCi/g F8300143S00001

• F8300143K00011 Cs-137=9.37E-03 pCi/g

= .023 cpm

• F8300143A00006

• F8300143A00017 13 = 2.576 cpm 13 = 2.568 cpm F8300143A00016 M

13 = 2.485 cpm F8300143A00013 13 = 2.667 cpm 8300143S00005 F8300143A00022 s-137=4.22E-02 pCi~ .-1..-~i..nlTE 13 = 2,727 cpm F8300143A0001 0

• 13 = 3.083 cpm D D F8300143A00002 F8300143AOOO 12

=

13 2.977 cpm 13 = 2.773 cpm

• F8300143A00020 F8300143A00007 13 = 2.742 cpm F8300143A00021

• 13=2.697cpm 13 = 2.280 cpm F8300143S00010 Cs-137=5.95E-02 pCi/g 1

.TIDEWATER IN RADIOLOGICAL SERVICES 0 100 NOTES:

date: ~ected due to no valid peak.

2 0ata was rejected due to high counting uncertainty.

Page I Att. I Maps F8300143

Attachment 2 Instrumentation January 30, 2017 Survey Unit F8300143

Table 2-1. Survey Unit Instrumentation

)Vleasun,.ment lnstr.uui~nt_Type . . Minimuin Dctecta!>le ACti~ity? Oet~ctor

• Calibratiori

• Tf pe Efficiencies o,~e ri~te~. "

Beta Static Ludlum Model Beta - 477 dpm/I 00 cm 2 13.2% 3 I 7897/331972 Measurement 2350-1 2/10/17 Ludlum Model 44-1 I 6 B Detector Gamma Scan Ludlum Model 2350 927 cpm NA 317892/2088 I 6 Ludlum Model 44- 12/29/16 10 Gamma Scan Ludlum Model 2350 945 cpm NA 3 l 7894/300786 Ludlum Model 44- 12/29116 10

• Mini.mum detectable activities for the count rate instrumentation were calculated in accordance with NUREG-1507, "Minimwn Detectable Concentrations with Typical Radiation Survey Instruments for Various Contaminants and Field Conditions" (U.S. NRC, 1997).

b Detectors are required to be calibrated once every 12 months. Calibration due date indicates the date by which the detector must be calibrated again.

cm 2 = square centimeters cpm = counts per minute dpm =disintegrations per minute Pagel Att. 2 Instrumentation F8300143

Static Measurement MDA Beta Survey Type PR331972 Detector Number 166 IBackground count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm 2)

Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br

• t) 0*5/t

• E

• A/100 (NUREG 1507)

Where: Br Background Countrate t Count Time (min)

E Efficiency A Area of detector (cm 2)

Static MDA 4 77 dpm/100 cm 2 Page 2 Att. 2 Instrumentation F8300143

Minimwn Detectable Count Rate for Outside Scanning VariailB 7810 Background count rat;: (cpm) 0.5 Surw)tlr Efficiency lo)

I .33 Dectlbi."ty perfoonance {d~ based upon ~le 11\Jll and false positives (M1-RRSIM Thie 6-5) 0.027 De!edor EllY.:iency Constants 60 sec/min 2.54 an/"111 100 crn/m 10.16 cm m of Oe!?CIOr in dirEdion oi scan Average Scan Speed for SU/Vey Unit 5.00 cmlsec Average Scan Speed for Suniey U:1il Determine Obsemtion lntf!Val fo1 Scan Speed tn 2.00 91C Obser.11~on Interval for scan speed of ~*.OB Calculate N~ Source Counts in Observation Interval In S. = d ' {Q)° 1 ~ 6-8 from MARSSIM Where: ft..nimum det:ctable nt211bEr of net source counts in the obscrvJlion intEIY.ll det~iltiy ~based on acceptable rat~ of true and false poc..iritres Background counls in Sitaval. I 22 cpm=S, Calc:ul;rte the IIDCR MDCR = S, x(6011Vp0 ' Eq".iaiion 6-9 from MARSSIM Where: t.\DCR Minimum Dae<:tlble Coon! Raie (qxn)

I ~f.cin lntEMI 2.00 sec 945 cpm (II.OCR)

S.e26 djxn Page 3 Att. 2 Instrumentation F8300143

Minimum Detectable Count Rate for Outside Scanning VariJb~

75ta Badgrotlld coom ratE {epm) 0.5 SurveyorEfficiencyfp) 1.3a Oectlb~ perioonance (d~ based upon acc:EplJble 1rue and tllse positi'.r!!s (IMRRSIM Thie tJ-5) 0.027 06edar Elf.ciency Constants ao SEdmin 2.M cmrn 100 cmlm

10. Id cm Size of O<le<:for in direcliro oi SGan Average Scan Speed for Survey Unit 6.03 anlsec Avmge $(.Jn Speed !tr Suv<y Unit Detemline Obsemtion lnlerval for Swi Speed (ij 2.00 se.: ObseM!ioo Interval for SCJn !~ at ~.08 Calculate Net Source Counis in ObseMlion lnteml (I}

S, =d ' {bi)" Eq.mion 6-8 frmn MARSSL\I Where: ~fnirmrn det?ciab'.e runtier of net sruce CMts in lhe cbservation int<ml

• l<ctal:litiy perilrm;r".ct based on accepiable ralE oi tru! and false po<..itim Baclground coon1s in inleMJ. I 22 epm= S, Calcul;rte the NDCR MOCR = S. x(001l)if ! E~on IJ-9 flOOI W.~

Where: MOCR t.fulimun Dftectlbl! Count Ra~ (qxn)

I Obser'latioo nt&'r.I 2.00 sec 927 qim (},I.OCR) 9.463 qxn Page 4 Att. 2 Instrumentation F8300143

Attachment 3 Investigation January 30, 2017 Survey Unit F8300143 (none)

Att. 3 Investigation F8300143

Attachment 4 Data Assessment January 30, 2017 Survey Unit F8300143

Histogram for Beta Static Activity (dpm/100 cm2) Outside Area

~* ---...._,

r:- ~

mber of Values I Minimum 151 2280.30 1

,/ Ma.-.;imum SD 3.083.33*

222.74

/' Skewness 0371 Kurtosis -0.21 '

3 3/ ..,...,.,....,...,....,,.., BMean BMedian 2.676.26' 2,666.671 G1 N0<mal Distribution 0Less8ins

/ 0More8ins

/

2329 2409 2489 2570 2650 2730 2811 21391 2971 3052 Page 1 Att 4 Data Assessment F8300143

Q-Q Plot for Beta Static Activity (dpm/100 cm2) Outside Area Activily N =15 Mean= 2676 Sd=222.7 Slope = 228.6 3000 Intercept = 2676 Correlation. R =.0.98 ll!IBeotFHiroe 2800 2600 2400

• 1.5 *1.0 <<5 00 05 1.0 1.5 Theoretical Quantiles (Standard Normal)

Page 2 Att. 4 Data Assessment F8300143

Attachment 5 Laboratory Analysis Gamma Spectrometry Report (14 pgs)

January 30, 2017 Survey Unit F8300143

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0030 (F8300143-I) Project: SMUD00201 Sample ID: 407403001 Client ID: SMUD002 Matrix: . Soil Collect Date: 22-SEP-16 13:50 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actiniwn-228 7. IOE-07 +/-2.87£-07 2.34£-07 uCi/g MXRI 10121/16 1428 1604416 Americium-241 u 1.92E-08 +/-l.44E-07 2.61 E-07 uCi/g Antimony-124 u -6.20E-08 +/-7.66E-08 1.07E-07 uCi/g Antimony-125 u -2.97E-08 +/-7 .58E-08 1.40E-07 uCi/g Barium-133 u -3.85£-09 +/-3.53E-08 6..1 IE-08 uCi/g Bariurn-140 u 1.41E-07 +/-5.30E-07 l.05E-06 uCi/g Berylliurn-7 u 1.86E-07 +/-3.78£-07 7.64E-07 uCi/g Bismuth-212 9.35E-07 +/-7.38£-07 8.90E-07 . uCi/g Bismuth-214 6.4JE-07 +/-1.98£-07 1.27E-07 uCi/g Cerium-139 u 3.45E-09 +/-2.67E-08 4.89E-08 uCi/g Cerium-141 u -4.19E-08 +/-8.07E-08 l.40E-07 uCi/g

_ Cerium-144 .. u -2.44E~08 +/-l.77E-07. 3.20E-07 uCi/g Cesium-134 u -4.22£-09 +/-4.52E-08 8.2IE-08 uCi/g Cesium-136 u -8.25E-08 +/-2.0SE-07 3.80E-07 uCi/g Cesiwn-137 u 9.37E-09 +/-3.81 E-08 7.56E-08 l.OOE-07 uCi/g Chromium-51 u -2.32E-07 +/-4.45E-07 8.18E-07 uCi/g Cobalt-56 u 6.78E-09 +/-3.99£-08 8.25E-08 uCi/g Cobalt-57 u -2.22E-08 +/-2.30E-08 3.83E-08 uCi/g Cobalt-58 u -l.69E-08 +/-3.43E-08 6.48E-08 uCi/g Cobalt-60 u 9.67E-09 +/-2.89E-08 6.54E-08 I.OOE-07 uCi/g Europium-152 u -I.59E-08 +/-9.48E-08 l.77E-07 uCi/g Europium-154 u 2.22E-08 +/-9.82E-08 2.07E-07 uCi/g Europium-I 55 u 4.09E-08 +/-9.26E-08 1.786-07 uCi/g lridium-192 u -9.77£-09 +/-3.30£-08 6.236-08 uCi/g lron-59 u -1.13E-07 +/-8.81 E-08 1.306-07 uCi/g Lead-210 u 1.766-06 +/-3.85E-06 7.746-06 uCi/g Lead-212 8.25E-07 +/-I. I 7E-07 9.626-08 uCi/g Lead-2 l4 8.47E-07 +/-1.71 E-07 3.056-07 uCi/g Manganese-54 u 4.48E-09 +/-3.1 OE-08 6.446-08 uCi/g Mercury-203 u 1.71 E-09 +/-3.91 E-08 7.65£-08 uCi/g Neodymium-147 u 2.12E-07 +/-1.20E-06 2.386-06 uCi/g Neptunium-239 u 2.53E-07 +/-3.54E-07 3.88E-07 uCi/g Niobium-94 u 1.98E-09 +/-4. I OE-08 7.556-08 uCi/g Niobium-95 u -2.03E-08 +/-5.02E-08 7.55E-08 uCi/g Potassium-40 9.76E-06 +/-1.35E-06 6.156-07 uCi/g Promethium-144 u -l.90E-08 +/-3.65E-08 6.26E-08 uCi/g

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0030 (F8300143-l) Project: SMUD00201 San1ple ID: 407403001 Client ID: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 u l.72E-08 +/-3.79E-08 7.72E-08 uCi/g Radium-223 u -4.08E-07 +/-5.93E-07 l.07E-06 uCi/g Radium-224 UI 0.00 +/-l.07E-06 l.03E-06 uCi/g Radium-228 7. IOE-07 +/-2.87£-07 2.34E-07 uCi/g Ruthenium-106 u 1.41E-07 +/-3.37£-07 6.69E-07 uCi/g Silver-II Om u l.OIE-08 +/-3.96E-08 8.53E-08 uCi/g Sodium-22 u 8.78E-09 +/-3.5 IE-08 7.44E-08 uCi/g Thallium-208 3.20E-07 +/-8.54E-08 5.53E-08 uCi/g Thorium~234 UI 0.00 +/-2.69£-06 l.97E-06 uCi/g Tin-113 u 3.91£-09 +/-3.99E-08 7.86E-08 uCi/g Uranium-235 u -5.14£-08 +/-I .82E-07 3.23E-07 uCi/g Uranium-238 UI 0.00 _+/.:2.69E-06 l.97E-06 uCi/g Yttrium-88 u -l .30E-08 +/-2. 71 E-08 5.38E-08 uCi/g Zinc-65 u 6.77E-08 +/-7.32E-08 I .62E-07 uCi/g Zirconium-95 u 1.30£-08 +/-8.49£-08 1.63E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI I 0/05116 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 2

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0031 (F8300143-3) Project: SMUD00201 Sample ID: 407403002 - Client lD: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 13:39 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actinium-228 7.29E-07 +/-2.84E-07 2.29E-07 uCi/g MXRI I 0/21116 1429 16044.16 Americium-241 u -5.33E-08 +/-2.0SE-07 3.65E-07 uCi/g Antimony-124 u 4.80E-08 +/-9.29E-08 2.32E-07 uCi/g Antimony-125 u 2.14E-08 +/-8.30E-08 l.66E-07 uCi/g Barium-133 u -7.09E~09 +/-5.82E-08 7.66E-08 uCi/g Barium-140 u -l.67E-07 +/-4.71E-07 8.64E-07 uCi/g Beryllium-7 u 3.79E-07 +/-4.00E-07 8.54E-07 . uCi/g Bismuth-212 UI 0.00 +/-6. 72E-07 1.41 E-06 uCi/g Bismuth-214 5.59E-07 +/-1.64E-07 I .43E-07 uCi/g Cerium-139 u 3.ISE-09 +/-2.99E-08 5.81E-08 uCi/g Cerium-141 u l.08E-08 +/-7.57E-08 1.49E-07. uCi/g Cerium-144 u ?.07E-08 +/-1.95E-07 3.55Ec07 u_Ci/g

• Cesium-134 u 3.53E-08 +/-3.80E-08 8.53E-08 uCi/g Cesium-136 u -l.33E-07 +/-1.93E-07 3.45E-07 uCi/g Cesium-137 u -3.07E-08 +/-3.91 E-08 6.56E-08 i.OOE-07 uCi/g Chromium-SI u -2.63E-07 +/-4.93E-07 8.87E-07 uCi/g Cobalt-56 u -J .44E-08 +/-4.81 E-08 8.57E-08 uCi/g Cobalt-57 u 2.14E-08 +/-2.63E-08 5.04E-08 uCi/g Cobalt-58 u -3.74E-09 +/-4.08E-08 7.75E-08 uCi/g Cobalt-60 u 6.49E-09 +/-3.27E-08 7.22E-08 1.00E-07 uCi/g Europium-152 u 5.92E-08 +/-8.56E-08 1.74E-07 uCi/g Europium-154 u -I .OSE-08 +!- 7.99E-08 l.68E-07 uCi/g Europium-155 u 1.61E-08 +/-I.l 2E-07 2.02E-07 uCi/g lridium-192 u 6.61E-09 +/-3.SOE-08 6.92E-08 uCi/g lron-59 u , -5. I OE-08 +/-7 .99E-08 l.44E-07 uCi/g Lead-210 u -l.43E-06 +/-8.81 E-06 1.59E-05 uCi/g Lead-212 7.66E-07 +/-l.1 SE-07 8.72E-08 uCi/g Lead-214 6.17E-07 +/-l.60E-07 l.37E-07 uCi/g Manganese-54 u 2.03E-08 +/-3.82E-08 7.90E-08 uCi/g Mercury-203 u -I .32E-08 +/-4.02E-08 7.49E-08 uCi/g Neodymium-147 u l.25E-07 +/-l.35E-06 2.62E-06 uCi/g Neptunium-239 u -l.94E-07 +/-2. 87E-07 4. 71 E-07 uCi/g Niobium-94 u 1.64E-08 +/-3.55E-08 7.16E-08 uCi/g Niobium-95 u 5.27E-08 +/-6.28E-08 6.64E-08 uCi/g Potassium-40 8.67E-06 +/-1.33E-06 6.09E-07 uCi/g Promethium-144 u 2.25E-08 +/-3.85E-08 7.63E-08 uCi/g 3

_ -* _ 1 '"'7 _.£"'I'"\ C' A

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0031 (F8300143-3) Project: SMUD00201 Sample ID: 407403002 Client lD: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 u 4.82E-10 +l-3. 71 E-08 7.23E-08 uCi/g Radium-223 u 3.33E-07 +/-5.65E-07 l.l6E-06 uCi/g Radium-224 u 3.89E-07 +/-1.0SE-06 9.34E-07 uCi/g Radium-228 7.29E-07 +/-2.84E-07 2.29E-07 uCi/g Ruthenium- I 06 u l.02E-07 +/-3.04E-07 6.19E-07 uCi/g Silver-I IOm u 8.67E-10 +/-3.79E-08 7.66E-08 uCi/g Sodium-22 u -4.04E-09 +/-2.83E-08 S.93E-08 uCi/g Thallium-208 2.57E-07 +/-8.27E-08 7.34E-08 uCi/g Thorium-234 u 2.53E-08 +/-1.89E-06 3.43E-06 uCi/g Tin-113 u -2.99E-08 +/-4.0SE-08 7.03E-08 uCi/g Uranium-235 u -6.98E-08 +/-l.90E-07 3.57E-07 uCi/g Uraniu_l1):238 u 2.53E-08 +/-l.89E-06 3..43E-06 uCi/g Yttrium-88 u 2.5 IE-08 +/-3.65E-08 9.85E-08 uCi/g Zinc-65 u -6.75E-08 +/-9.73E-08 l.7\E-07 uCi/g Zirconium-95 u 7.31E-09 +/-7.09E-08 1.41 E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI I 0/05/16 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 4

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0032 (F8300143-5) Project: SMUD00201 Sample ID: 407403003 Client ID: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 14:17 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actinium-228 7.73E-07 +/-2.89E-07 2.18E-07 uCi/g MXRI 10121/16 1429 1604416 Americium-241 u -3.93E-08 +/-I .46E-07 2.63E-07 uCi/g Antimony-124 u -3.12£-08 +/-7.58E-08 l.52E-07 uCi/g Antimony-125 u 8.03E-09 +/-7.90E-08 l.58E-07 uCi/g Barium-133 u 2.86E-08 +/-5.01 E-08 6.39E-08 uCi/g Barium-140 u -1.36£-07 +/-4. ISE-07 7.93E-07 uCi/g Beryllium-7 u -7.31E-08 +/-3.06£-07 5.92E-07 uCi/g Bismuth-212 UI 0.00 +/-8. I 5E-07 l.09E-06 uCi/g Bismuth-214 9.35E-07 +/-1.70£-07 1.1 IE-07 uCi/g Cerium-139 u -8.56E-09 +/-2.58E-08 4.68E-08 uCi/g Cerium-141 u I.07E-07 +/-l.73E-07 1.17E-07 uCi/g Cerium-144 u -2.83E~08 +/-l.48E-07 2.78E~07 uCi/g Cesium-134 u 4.79E-08 +/-4.29E-08 6.99E-08 uCi/g Cesium-136 u -l.52E-07 +/-I .32E-07 2.08£-07 uCi/g Cesium-137 u 4.29E-08 +/-4.43E-08 5.75E-08 l.OOE-07 uCi/g Chromium-SI u -1.99£-08 +/-3.60£-07 7.29£-07 uCi/g Cobalt-56 u -1.79£-08 +/-3.30£-08 5.80£-08 uCi/g Cobalt-57 u 1.68£-09 +/-1.97£-08 3.81£-08 uCi/g Cobalt-58 u -7.88E-09 +/-3.29£-08 6.22E-08 uCi/g Cobalt-60 u -l.02E-09 +/-2.30E-08 4.99E-08 l.OOE-07 uCi/g Europium- l 52 u -9. IOE-08 +/-6.93£-08 l.18E-07 uCi/g Europium-154 u 4.91E-08 +/-8.75£-08 1.99£-07 uCi/g Europium-155 u 7.63E-08 +/-9.08E-08 l.86E-07 uCi/g lridium-192 u -1.60E-08 +/-3.02E-08 5.77£-08 uCi/g lron-59 u -3.40£-08 +/-7.39E-08 l.42E-07 uCi/g Lead-210 u 1.36£-06 +/-4. 78E-06 9.94E-06 uCi/g Lead-212 8.66£-07 +/- l.22E-07 8.03£-08 uCi/g Lead-214 8.21 E-07 +/-1.69£-07 1.14E-07 uCi/g Manganese-54 u 7.13£-09 +/-2.84E-08 5.83E-08 uCi/g Mercury-203 u 3.00E-08 +/-5.48E-08 6.46E-08 uCi/g Neodymiwn-147 u -7.91E-07 +/-9.64£-07 l.68E-06 uCi/g Neptunium-239 u 3.91E-08 +/-2.06£-07 4.03E-07 uCi/g Niobium-94 u -1.24£-08 +/-2.59E-08 4.68E-08 uCi/g Niobium-95 u 7.23£-09 +/-4.49£-08 8.0IE-08 uCi/g Potassium-40 7.56£-06 +/-1.16£-06 5.54E-07 uCi/g Promethium-144 u -8.52£-09 +/-2. 70E-08 5.0SE-08 uCi/g 5

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0032 (F8300143-5) Project: SMUD00201 Sample ID: 407403003 Client ID: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 u -3.47E-08 +/-3.46E-08 6.00E-08 uCi/g Radium-223 u -l.23E-08 +/-4.80E-07 9.65E-07 uCi/g Radium-224 UI 0.00 +/-9.76E-07 l.29E-06 uCi/g Radium-228 7.73E-07 +/-2.89E-07 2. l8E-07 uCi/g Ruthenium- I 06 u -5.45E-08 +/-2.54E-07 4.87E-07 uCi/g Silver- I I Om u -3.39E-09 +/-3.50E-08 6.86E-08 uCi/g Sodium-22 u 1.5 lE-08 +/-3.06E-08 6.90E-08 uCi/g Thallium-208 2.77E-07 +/-8. l 8E-08 6.21E-08 uCi/g Thorium-234 u 9.02E-07 +/-3.14E-06 2. l6E-06 uCi/g Tin-113 u -9.06E-ll +/-3.82E-08 7.66E-08 uCi/g Uranium-235 u 3.40E-07 +/-4.03E-07 3.56E-07 uCi/g Uranium-238 u 9.02E-07 +/-3.14E-06 2.16E-06 -uCi/g Ytfrium-88 u -l.93E-08 +/-3.39E-08 5.98E-08 uCi/g Zinc-65 u -l.l lE-08 +/-7.40E-08 l .37E~07 uCi/g Zirconium-95 u 2.43E-08 +/-4.76E-08 l.09E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI 10105116 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

OF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 6

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0033 (F8300143-8) Project: SMUD00201 Sample JD: 407403004 Client 10: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 14:10 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actinium-228 4.46E-07 +/-3.9 I E-07 3.90E-07 uCi/g MXRI I0/2l/16 1429 1604416 Americium-241 u -1.l4E-08 +/-5. 74E-08 9.13E-08 uCi/g Antimony-124 u 6.0SE-08 +/-9.59E-08 2.68E-07 uCi/g Antimony-125 u -1.40E-08 +/-1 .OOE-07 1.85E-07 uCi/g Barium-133 u 1.59E-08 +/-4.26E-08 8.45E-08 uCi/g Barium-140 u -2.24E-08 +/-7.14E-07 l.19E-06 uCi/g Beryllium-7 u -l.52E-07 +/-3.91E-07 6.94E-07 uCi/g Bismuth-212 u 3.19E-07 +/-9.22E-07 1.39£-06 uCi/g Bismuth-214 5.62E-07 +/-J.70E-07 l.53£-07 uCi/g Cerium-139 u 1.01 E-08 +/-2. 73E-08 5.42E-08 uCi/g Cerium-141 u 7.40£-08 +/-7.55E-08 1.56£-07 uCi/g Cerium-144 u -7.66£-08 +I- I .96£-07 3.23£-07 uCi/g Cesium-134 u 5.69E-08 +/-5.1 OE-08 1.17£-07 uCi/g Cesium-136 u 9.08E-08 +/-l.98E-07 4.58£-07 uCi/g Cesium-137 u -3.75E-09 +/-4.08E-08 8. IOE-08 l.OOE-07 uCi/g Chromium-51 u -2.44E-07 +/-4.39E-07 7.75£-07 uCi/g Cobalt-56 u -3.21E-08 +/-4.48E-08 7.81£-08 uCi/g Cobalt-57 u -4.65E-10 +/-2.07E-08 4.0IE-08 uCi/g Cobalt-58 u 5.48E-08 +/-4. ISE-08 9.09£-08 uCi/g Cobalt-60 u -2.92E-08 +/-4.28E-08 7.14£-08 l.OOE-07 uCi/g Europium-152 u -l.62E-08 +/-9.28E-08 1.72£-07 uCi/g Europium-154 u -7.26E-08 +/-I .39E-07 2.45E-07 .uCi/g Europium-155 u l.42E-07 +/-I .60E-07 1.58£-07 uCi/g lridium-192 u 1.41 E-08 +/-3. 73E-08 7.45E-08 uCi/g lron-59 u J.5 IE-08 +/-1.00E-07 2.18£-07 uCi/g Lead-210 u 3.40E-07 +/-8. I 7E-07 7.95E-07 uCi/g Lead-212 7.29E-07 +/-I .22E-07 1.02£-07 uCi/g Lead-214 6.68E-07 +/-l.62E-07 3.18£-07 uCi/g Manganese-54 u 5.88E-09 +/-4.49£-08 9.12E-08 uCi/g Mercury-203 u 3.08E-08 +/-4.66£-08 9.45£-08 uCi/g Neodymium-147 u 2.91£-07 +/-1.53£-06 2.98E-06 uCi/g Neptunium-239 u -3.29£-08 +/-2.08£-07 3.97E-07 uCi/g Niobium-94 u -1.52£-08 +/-3.60E-08 6.76E-08 uCi/g Niobium-95 u -1.05£-08 +/-5.66£-08 l.09E-07 uCi/g Potassium-40 8.54£-06 +/-I .46E-06 6.36£-07 uCi/g Promethium- I44 u S.OOE-09 +/-4.40E-08 8.81E-08 uCi/g 7

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0033 (F8300143-8) Project: SMUD00201 Sample TD: 407403004 Client lD: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 u -2.19E-08 +/-5. I 3E-08 8.97E-08 uCi/g Radium-223 u 8.64E-07 +/-5.82E-07 l.32E-06 uCi/g Radium-224 u 5.19E-07 +/-1 .06E-06 1.09E-06 uCi/g Radium-228 4.46E-07 +/-3.91E-07 3.90E-07 uCi/g Ruthenium- I06 u 3.29E-07 +/-4.03E-07 8.46E-07 uCi/g Silver- I IOm u -7.24E-09 +/-5.55E-08 l.IOE-07 uCi/g Sodium-22 u -2.16E-08 +/-4.69E-08 8.46E-08 uCi/g Thallium-208 2.44E-07 +/-6.61E-08 7.06E-08 uCi/g Thorium-234 u 8.68E-07 +/-1.07E-06 9.99E-07 uCi/g Tin-113 u -8.49E-09 +/-4.45E-08 8.28E-08 uCi/g Uranium-235 u l.IOE-07 +/-2.03E-07 4.04E-07 uCi/g Uranium-238 .U 8.68E-07 +/-1.07E-06 9.99E-07 uCi/g Y.ttri uii1-8 S u -l.80E-08 +/-3.92E-08 7.83E-08 uCi/g Zinc-65 u 9.66E-08 +/-I .07E-07 2.34E-07 uCi/g Zirconium-95 u 1.70E-09 +/-8.17E-08 1.68E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI I 0/05/16 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 8

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 -www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0034 (F8300143-9) Project: SMUD00201 Sample JD: 407403005 Client ID: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 13:53 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" A.ctinium-228 7.32E-07 +/-3.45E-07 2.78E-07 uCi/g MXRl 10121/16 1429 1604416 A.mericium-241 u 2.28E-07 +/-3.85E-07 3.96E-07 uCi/g A.ntimony-124 u -1.05E-07 +/-1. I 3E-07 J.8JE-07 uCi/g

/\ntimony-125 u -3.98E-08 +/-7.31 E-08 l.27E-07 uCi/g Barium-133 u 5.12E-08 +/-5.42E-08 7.28E-08 uCi/g Barium-140 u -2.48E-07 +/-4.96E-07 9.29E-07 uCi/g Beryllium-? u 4.04E-07 +/-4. l 8E-07 8.77E-07 uCi/g Bismuth-212 u 5.33E-07 +/-6.0SE-07 l.29E-06 uCi/g Bismuth-214 6.38E-07 +/- l .46E-07 I.22E-07 uCi!g Cerium-139 u 3.21E-08 +/-2.70E-08 5.4JE-08 uCi/g Cerium-141 u l.88E-l 1 +/-7.12E-08 l.39E-07 uCi/g Cerium-144 u -8.07E-08 +/-1. 72E-07 3.25E-07 uCi/g Cesium-134 u 3.85E-08 +/-5. l 3E-08 8.36E-08 uCi/g Cesium-136 u 3.60E-08 +/-2.30E-07 4.61E-07 uCi/g Cesium-137 u 2.27E-08 +/-4.3 7E-08 9.03E-08 l.OOE-07 uCi/g Chromium-SI u -2.23£-07 +/-5.00E-07 8.96E-07 uCi/g Cobalt-56 u -7.14E-09 +/-4.44E-08 8.51E-08 uCi/g Cobalt-57 u -9.55E-09 +/-2.42E-08 4. l SE-08 uCi/g Cobalt-58 u 2.48E-08 +/-4.23E-08 9.28E-08 uCi/g Cobalt-60 u 6.05E-09 +/-4.90E-08 9.0IE-08 1.00E-07 uCi/g Europium-152 u -3.89E-08 +/-1.13E-07 1.61 E-07 uCi/g Europium-154 u 3.64E-08 +/- l. l 2E-07 2.46E-07 uCi/g Europium-I 55 u -l .02E-08 +/-9.84E-08 J.77E-07 uCi/g 1ridium-I92 u 2.53E-08 +/-4.09E-08 7.58E-08 uCi/g lron-59 u 4.64E-09 +/-1.0 I E-07 2.02E-07 uCi/g Lead-210 u 6.65E-06 +/-9.61 E-06 l.94E-05 uCi/g Lead-212 7.03E-07 +/-1.1 OE-07 8.66E-08 uCi/g Lead-214 7.00E-07 +/-1.43E-07 2.84E-07 uCi/g Manganese-54 u l.13E-08 +/-3.77E-08 7.78E-08 uCi/g Mercury-203 u -2.14E-l l +/-4.26E-08 8.lOE-08 uCi/g Neodymium-14 7 u -1.4SE-07 +/- J .32E-06 2.61E-06 uCi/g Neptunium-239 u -l.74E-09 +/-2.3 7E-07 4.29E-07 uCi/g Niobium-94 u 2.55E-08 +/-3.38E-08 7.34E-08 uCi/g Niobium-95 u 2.71E-08 +!-4. 59E-08 9.24£-08 uCi/g Potassium-40 8.18E-06 +/- l .36E-06 7.07E-07 uCi/g Promethium-144 u 3.60E-08 +/-9.64E-08 7.19E-08 uCi/g 9

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0034 (F8300143-9) Project: SMUD00201 Sample ID: 407403005 Client ID: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 u 8.39E-09 +/-3. 75E-08 7.39E-08 uCi/g Radium-223 u 7.04E-08 +/-6.30E-07 l.20E-06 uCi/g Radium-224 UI 0.00 +/-1.30E-06 9.28E-07 uCi/g Radium-228 7.32E-07 +/-3.45E-07 2.78E-07 uCi/g Ruthenium- I06 u -4.00E-08 +/-3.66E-07 7.07E-07 uCi/g Silver-I IOm u -l.27E-08 +/-4.l 9E-08 7.97E-08 uCi/g Sodium-22 u l.22E-08 +/-3.97E-08 8.70E-08 uCi/g Thallium-208 2.35E-07 +/-7.98E-08 7.56E-08 uCi/g Thorium-234 u 9.13E-07 +/-2.07E-06 3.17E-06 uCi/g Tin-113 u -I.60E-08 +/-4.0 I E-08 7.l 8E-08 uCi/g Uranium-235 u 2.37E-08 +/-1. 76E-07 3.46E-07 uCi/g Uranium-238 u 9.13E-07 +/-2.07E-06 3.17E-06 -uCi/g Yttrium-88 u -5.45E-10 +/-2.52E-08 6.46E-08 uCi/g Zinc-65 u 6.93E-09 +/-8. 72E-08 1.55E-07 uCi/g Zirconium-95 u l .39E-08 +/-5.95E-08 I.30E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI 10/05/16 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 10

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0035 (F8300143-10) Project: SMUD00201 Sample ID: 407403006 Client ID: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 14:23 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actinium-228 9.63E-07 +/-2.39E-07 l.71E-07 uCi/g MXRI 10121/16 1431 1604416 Americium-241 Ul 0.00 +/-l.34E-07 l.23E-07 uCi/g Antimony-124 u 2.25E-08 +/-7.94E-08 l.74E-07 uCi/g Antimony-125 u -5.45E-09 +/-6.52E-08 1.28E-07 uCi/g Barium-133 u -l.60E-08 +/-2. 73E-08 4.48E-08 uCi/g Barium-140 u l.23E-07 +/-3.83E-07 7.88E-07 uCi/g Beryllium-7 u -5.84E-08 +/-2.60E-07 5.0IE-07 uCi/g Bismuth-212 u 7.89E-07 +/-6.93E-07 I.OJ E-06 uCi/g Bismuth-214 5.66E-07 +/-l.53E-07 l.05E-07 uCi/g Cerium-139 u 3.81E-09 +/-2. IOE-08 3.98E-08 uCi/g Cerium-141 u -2.52E-08 +/-6.17E-08 I.I IE-07 uCi/g Cerium-144 u 4.70E-08 +/-1.SOE"07 . 2.68E-07 uCi/g

• Cesium-134 u S.86E-08 +/-5.02E-08 7.68E-08 uCi/g Cesium-136 u l.37E-07 +/-I .50E-07 3.44E-07 uCi/g Cesium-137 Ul 0.00 +/-3.52E-08 3.20E-08 L.OOE-07 uCi/g Chromium-SI u 2.49E-08 +/-3.56E-07 7.17E-07 uCi/g Cobalt-56 u 2.70E-08 +/-3.35E-08 7.l 7E-08 uCi/g Cobalt-57 u 2.13E-09 +/-1. 76E-08 3.37E-08 uCi/g Cobalt-58 u 1.05E-08 +/-3. I 5E-08 6.41E-08 uCi/g Cobalt-60 u -8.45E-09 +/-2.88E-08 5.61E-08 l.OOE-07 uCi/g Europium-152 u -4.87E-08 +/-6. 70E-08 l.24E-07 uCi/g Europium-154 u 2.31E-08 +/-7.16E-08 l.56E-07 uCi/g Europium-155 u 7.20E-08 +/-6.65E-08 l.38E-07 uCi/g lridium-192 u -1.59E-08 +/-2.60E-08 4.90E-08 uCi/g lron-59 u -8. ISE-l 0 +/-5.1 OE-08 l.lOE-07 uCi/g Lead-210 u 1.82E-07 +/-l.04E-06 2.16E-06 uCi/g Lead-212 1.04E-06 +/-1.12E-07 7.03E-08 uCi/g Lead-214 9.36E-07 +/-l.45E-07 9.13E-08 uCi/g Manganese-54 u 5.4 l E-08 +/-3.80E-08 5.84E-08 uCi/g Mercury-203 u -l.41E-08 +/-3.24E-08 6.25E-08 uCi/g Neodymium-147 u 4.29E-07 +/-8.84E-07 l.87E-06 uCi/g Neptunium-239 u -4.17E-08 +/-1. 70E-07 3.16E-07 uCi/g Niobium-94 u 5.63E-09 +/-2.04E-08 4.19E-08 uCi/g Niobium-95 u -2.48E-08 +/-3.95E-08 5.82E-08 uCi/g Potassi um-40 7.79E-06 +/-9.78E-07 4.83E-07 uCi/g Promethium-144 u S.45E-09 +/-2.83E-08 S.52E-08 uCi/g 11

- - - l"'\C' _£1"'\CA

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Cer,tificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0035 (F8300143-10) Project: SMUD00201 Sample ID: 407403006 Client ID: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis 3ammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 U 3.16£-08 +/-3.llE-08 6.78E-08 uCi/g Radium-223 U -3.25£-07 +/-4.32E-07 8.00E-07 uCi/g Radium-224 U 7.30E-07 +/-1.33E-06 7.53E-07 uCi/g Radium-228 9.63£-07 +/-2.39£-07 1.71 E-07 uCi/g Ruthenium-] 06 U -6. 75£-08 +/-2.19E-07 4.09E-07 uCi/g Silver-1 IOm U l.ISE-08 +/-4.20£-08 8.27E-08 uCi/g Sodium-22 U 1.0 I E-08 +/-2.59£-08 5.68E-08 uCi/g fhallium-208 2.35£-07 +/-6.12£-08 5.01 E-08 uCi/g fhorium-234 Ul 0.00 +/-1.36£-06 l.21E-06 uCi/g Tin-113 U 1.87£-08 +/-3.06E-08 6.55E-08 uCi/g Uranium-235 U -J.40E-08 +/-J.42E-07 2.63£-07 uCi/g Uranium-238 UI 0.00 +/-1.36E-06 l.21£-06 uCi/g Yttrium-88 U -6.88E-09 +/-3.13£-08 6.l 7E-08 uCi/g Zinc-65 U -J.86E-08 +/-5.38£-08 8.98E-08 uCi/g Zirconium-95 U 5.28£-08 +/-6.13£-08 I .32E-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTI 10/05116 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 12

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0036 (F8300143-14) Project: SMUD00201 Sample 10: 407403007 ClientlD: SMUD002 Matrix: Soil Collect Date: 22-SEP-16 14:00 Receive Date: 04-0CT-16 Collector: Client Parameter Qualifier Result Uncertainty MDC RL Units PF OF Analyst Date Time Batch Method Rad Gamma Spec Analysis Garnmaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Actinium-228 8.18E-07 +/-2.25E-07 l.96E-07 uCi/g MXRI 10/21/16 1432 1604416 Americium-24 I u 4.48E-08 +/-7.44E-08 1.41 E-07 uCi/g Antimony-124 u -1.27£-08 +/-4. I 8E-08 8.96E-08 uCi/g Antimony- I25 u -1.SIE-08 +/-6.89E-08 UIE-07 uCi/g Barium-133 u 4.48£-10 +/-3.37E-08 5.99E-08 uCi/g Barium-140 u -4.40£-08 +/-4.04E-07 7.79E-07 uCi/g Beryllium-7 u -1.44£-07 +/-2.55E-07 4.63E-07 uCi/g Bismuth-212 UI 0.00 +/-6.07E-07 9.63E-07 uCi/g Bismuth-214 7.22E-07 +/-I .69E-07 l.09E-07 uCi/g Cerium-139 u -2.00E-09 +/-2.46E-08 3.59E-08 uCi/g Cerium-141 u 3.07E-08 +/-5.64E-08 l.09E-07 uCi/g Cerium-144 u 2.93E-IO +/-1.43E-07 2.63E-07 uCi/g Cesium-134 u 1.35£-08 +/-3. I 4E-08 6.39E-08 uCi/g Cesium-136 u 6.84E-08 +/-I .44E-07 3.l9E-07 uCi/g Cesium-137 UI 0.00 +/-5.20E-08 4.86E-08 1.00E-07 uCi/g Chromium-SI u 8.29E-09 +/-3.72E-07 7.37E-07 uCi/g Cobalt-56 u 1.79E-08 +/-2.84E-08 6.22E-08 uCi/g Cobalt-57 u 9.60E-09 +/-I .86E-08 3.63E-08 uCi/g Cobalt-58 u 1.40E-08 +/-3.29E-08 6.77E-08 uCi/g Cobalt-60 u 2.30E-08 +/-2.34E-08 5.88E-08 l.OOE-07 uCi/g Europium-152 u -8.91E-09 +/-6.82£-08 I .33E-07 uCi/g Europium-154 u -8.95E-09 +/-6. 75E-08 l.38E-07 uCi/g Europium-155 u 2.72E-08 +/-7.35E-08 l.42E-07 uCi/g lridium-192 u -5.72E-09 +/-2.87£-08 5.55E-08 uCi/g Jron-59 u 3.46E-08 +/-7.93E-08 l.58E-07 uCi/g Lead-210 u 1.15E-06 +/-2.85E-06 2.61E-06 uCi/g Lead-212 8.48E-07 +/-1.22E-07 9.59E-08 uCi/g Lead-214 7.64E-07 +/-1. 79E-07 l.IOE-07 uCi/g Manganese-54 u 1.46E-08 +/-3.04E-08 6.17E-08 uCi/g Mercury-203 u 4.66E-IO +/-3. llE-08 6.ISE-08 uCi/g Neodymium-14 7 u 5.11 E-07 +/-1.05E-06 2.16E-06 uCi/g Neptunium-239 u 1.19E-07 +/-l.SIE-07 3.57E-07 uCi/g Niobium-94 u 5.13E-08 +/-3.22E-08 5.68E-08 uCi/g Niobium-95 u I.17E-09 +/-4.07E-08 6.95E-08 uCi/g Potassi um-40 8.45E-06 +/-I .23E-06 4.46E-07 uCi/g Promethium-144 u -6.94E-09 +/-2. 70£-08 4.72E-08 uCi/g 13

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Report Date: October 27, 2016 Company: Sacramento Municipal Utility District Address: 14440 Twin Cites Road Herald, California 95638

Contact:

Mr. Dave Koontz Project: Rancho Seco IOSB Soil and Water Analysis Client Sample ID: 2016-0036 (F8300143-14) Project: SMUD00201 Sample ID: 407403007 Client ID: SMUD002 Parameter Qualifier Result Uncertainty MDC RL Units PF DF Analyst Date Time Batch Method Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Standard List) "Dry Weight Corrected" Promethium-146 U l.89E-09 +/-2.48E-08 5.03E-08 uCi/g Radium-223 U 2.20E-07 +/-4.29E-07 8.29E-07 uCi/g Radium-224 Ul 0.00 +/-8.18E-07 l.21E-06 uCi/g Radium-228 8.18E-07 +/-2.25E-07 l.96E-07 uCi/g Ruthenium- I 06 U -1.59E-07 +/-2.41 E-07 4.20E-07 uCi/g Silver-I !Om U 6.29E-08 +/-6.81E-08 7.87E-08 uCi/g Sodium-22 U -6.42E-09 +/-2.47E-08 4.89E-08

• uCi/g Thallium-208 2.64E-07 +/-5.86E-08 3.6LE-08 uCi/g Thorium-234 U 1.21E-06 +/-2.21 E-06 l.38E-06 uCi/g Tin-113 U -2.17E-10 +/-3.19E-08 6.32E-08 uCi/g Uranium-235 U 8.83E-08 +/-I .36E-07 2.66E-07 uCi/g Uranium-238 u 1.21 E-06 +/,2.21 E-06 l.38E-06 . uCi/g Yttrium-88 u 4.14E-09 +/-2.40E-08 5.76E-08 uCi/g Zinc-65 u -4.50E-08 +/-5. I 7E-08 6.80E-08 uCi/g Zirconium-95 u 1.05E-07 +/-1.39E-07 l.3LE-07 uCi/g The following Prep Methods were performed:

Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 LYTl 10/05/16 0854 1604293 The following Analytical Methods were performed:

Method Description Analyst Comments DOE HASL 300, 4.5.2.3/Ga-Ol-R Notes:

Counting Uncertainty is calculated at the 95% confidence level ( 1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit PF: Prep Factor MDA: Minimum Detectable Activity RL: Reporting Limit MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit 14