EPA MEMO RE: RADIOCHEMICAL RESULTS FOR FIELDS …Fields Brook and Sanyo Samples FROM: John Griggs, Chief ... The activity, uncertainty, and MDC are given in the same units. The activity

; 0002.UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RADIATION AND INDOOR AIRNational Air and Radiation Environmental Laboratory

540 South Morris Avenue, Montgomery, AL 36115-2601(334) 270-3400

December 30, 1998

MEMORANDUM

SUBJECT: Radiochemical Results forFields Brook and Sanyo Samples

FROM: John Griggs, ChiefMonitoring and Analytical Services Branch

TO: Larry Jensen, Health PhysicistRegion 5

Attached are data packages for isotopic uranium and thorium analyses of samplescollected from the Fields Brook Site (NAREL batch number 9800065) in Ashtabula, Ohio andthe Sanyo Site in Richmond, Indiana (NAREL batch number 9800054). The results of furtheranalyses will be sent as they are completed.

Radiochemical analyses usually require the subtraction of an instrument backgroundmeasurement from a gross sample measurement. Both values are positive, but when the sampleactivity is low, random variations in the two measurements can cause the gross value to be less -than the background, resulting in a measured activity less than zero. Although negative activitieshave no physical significance, they do have statistical significance, as for example in theevaluation of trends or the comparison of two groups of samples.

For all analyses except gamma spectroscopy, it is the policy of NAREL to report resultsas generated, whether positive, negative, or zero, together with the 2-sigma measurementuncertainty and a sample-specific estimate of the minimum detectable concentration (MDC).The activity, uncertainty, and MDC are given in the same units. The activity and 2-sigmauncertainty for a radionuclide measured by gamma spectroscopy are reported only if the nuclideis detected; so, the results of gamma analyses are never zero or negative. Nuclides that are notdetected do not appear in the report, with the exception of Ba-140, Cs-137,I-131, K-40, Ra-226,and Ra-228. If one of these six nuclides is undetected, NAREL reports it as "Not Detected," or"ND," and provides a sample-specific estimate of the MDC.

Internet Address (URL) • http://www.epa.govR«cyclad/R*cyclabl« • Printed with Vegetable OH Based Inks on Recycled Paper (Minimum 25% Postconsumer)

Specific information concerning all aspects of the radiological analysis of the samples iscontained in the batch case narratives of the data packages. If you have any questions concerningthe analytical results, please contact me at (334)270-3450.

Attachments

cc: Jack Barnette, Region 5, w/o attachmentsMary Clark, (6601J), w/o attachmentsEd Sensintaffar, NAREL

U.S. ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY

TH ANALYSESSDG #9800065

QC BATCH SUMMARY

QC batch #: 0000661ZPreparation procedure: N/AAnalysis procedure: TH

NAREL Sample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04507M98.04508N98.04509P98.045 10G98.045 11 H98.045 12J98.045 13K98.045 14L98.04514L98.045 14LRBK-00381216H*

QCType

DUP

MSMSDRBK

Yield (%)

96.97 %94.82 %98.61 %91.13%98.06 %98.23 %90.80 %99.38 %85.41 %93.62 %91.59%96,12%95,41 %93.56 %82.10%96.92 %97,23 %

± 2a Uncertainty (%)

2.28 %2.17%2.33 %2.11 %2.22 %2.23 %2.04%2.24 %2.01 %2.09%2.11 %2.28 %2.18%2.15%1.90%2.21 %2.21 %

Analyst

ASASASASASASASASASASASASASASASASAS

1 Samples marked with an asterisk are not in this sample delivery group but were analyzed with it for QC purposes.

National Air and Radiation Environmental LaboratoryQC Batch Report

QC Batch #: 0000661Z Analytical Procedure: TH

REAGENT BLANKS (PCI)

Sample ID

00381216H00381216H00381216H00381216H

___ 1

Nuclide

TH227TH228TH230TH232

Activity ± 2o

1.32e-02 ± 1.5e-02-2.12e-02 ± 3.0e-021.886-03 ± 9.4e-03-6.87e-03 ± 4.1e-03

LABORATORY DUPLICATES (PCI/GWET)

Sample ID

98.04507M98.04507M98.04507M"S.04507M

Nuclide


Original ± 2<J

1.21e-01 ± l.le-011.616+00 ± 2.8e-019.88e-01 ± 1.9e-011.05e+00 ± 1.9e-01

Duplicate, ± 2a

9.81e-02 ± 9.7e-021.87e+00 ± 3.0e-011.206+00 ± 2.1e-011.316+00 ± 2.2e-01

RPD

20.7215.0119.6021.72

-0.31 OK1.09 OK1.34 OK1.53 OK

MATRIX SPIKES (PCI/GWET)

Sample ID

98.04514L98.04514L98.04514L98.04514L

Nuclide


Amt Added ± 2a

NO SPIKE DATANO SPIKE DATA5.77e+00 ± 4.5%

NO SPIKE DATA

•Native ± 20

7.74e-01 ± 1.6e-01

Measured ± 2o

7.49e+00 ± 5.9e-01

%R Zi1

116.39 1.89 OK

MATRIX SPIKE DUPLICATES (PCI/GWET)

J98.04514L98.04514L98.04514L

Nuclide Amt Added ± 2a



NO SPIKE DATA

Analyst:

QA Officer:

Measured ± 2o

7.61e+00 ± 5.6e-01 0.21 OK 118.78 2.17 OK

ILS. ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY

TH ANALYSES

REPORT OF SAMPLE DELIVERY GROUP #9800065

Project:Analysis Procedure:Date Reported:

FIELDS BROOKThorium12/03/1998

SAMPLES

NARELSample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04508N98.04509P98.045 10G98.045 11 H98.045 12J98.045 13K98.045 14L

Client Sample ID

R407SSR408SSR409SBR410SBR411SSR412SSR413SBR414SBR415SSR416SSR417SSR418SSR419SS

Type

SAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAM

Matrix

SOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOIL

DateCollected

07/28/199807/28/199807/28/199807/28/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/1998

DaleReceived

08/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/1998

EXCEPTIONS

1. Packaging and Shipping - No problems were observed.2. Documentation - No problems were observed.3. Sample Preparation - No problems were encountered.4. Analysis - No problems were encountered.5. Holding Times - All holding times were met.

QUALITY CONTROL

1. QC samples - All QC analysis results met NAREL acceptance criteria except 232Th reagent blank result. Thisresult was more than 3 estimated standard deviations below zero, and it therefore appears on the control chartas a rejected value. However, the rejection test is based on approximating the Poisson counting distributionsof the sample and background by normal distributions. At the low background levels typical of alphaspectrometry, the normal approximation is somewhat inaccurate. The counting data were: 11 backgroundcounts in 3000 minutes and 0 sample counts in 1000 minutes. When exact Poisson statistics were used toevaluate the data, the 232Th value was not rejected.

2. Yields - All chemical yields were within acceptance limits.3. Instruments - Response and background checks for all instruments used in these analyses met NAREL

acceptance criteria.

CERTIFICATION

I certify that this data report complies with the terms and conditions of the Quality Assurance Project Plan, except asnoted above. Release of the data contained in this report has been authorized by the Chief of the Monitoring andAnalytical Services Branch and the NAREL Quality Assurance Coordinator, or their designees, as verified by thefollowing signatures.

James B. MOOPQuality Assurance Coordinator

Date

Jogr^Griggs, Ph.D.Chief, Monitoring and Analytical Services Branch

Date

GENERAL INFORMATION

SAMPLE TYPES

BLD Blind sampleDBD Double blind sampleFBK Field blankSAM Normal sample

ANALYSIS QC TYPES

ANA Normal analysisDUP Laboratory duplicateLCS Laboratory control sample (blank spike)MS Matrix spikeMSD Matrix spike duplicateRBK Reagent blank

QUALITY INDICATORS

RPD Relative Percent Difference%R Percent RecoveryZ Number of standard deviations by which a QC measurement differs from the expected value

EVALUATION OF QC ANALYSES

A reagent blank result is considered unacceptable if it is more than 3 standard deviations below zero or more than 3standard deviations above a predetermined upper control limit. For some analyses NAREL has set the upper controllimit at zero. For others the control limit is a small positive number.

NAREL evaluates the results of duplicate and spike analyses using "Z scores." A Z score is the number of standarddeviations by w*v*,h the QC result differs from its ideal value. The score is considered acceptable if its absolute valueis not greater than 3.

The Zscore for a spiked sample is computed by dividing the difference between the measured value and the target valueby the combined standard uncertainty of the difference.

The Z score for a duplicate analysis is computed by dividing the difference between the two measured values by thecombined standard uncertainty of the difference. When the precision of paired MS/MSD analyses is evaluated, thenative sample activity is subtracted from each measured value and the net concentrations are then converted to totalactivities before the Z score is computed.

Each standard uncertainty used to compute a Z score includes an additional fixed term to represent sources ofmeasurement error other than counting error. This additional term is not used in the evaluation of reagent blanks.

NAREL reports the "relative percent difference," or RPD, between duplicate results and the "percent recovery," or %R,for spiked analyses, but does not use these values for evaluation.



ANALYSIS SUMMARY

Analysis Procedure: THTitle: Thorium

NAREL Sample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04507M98.04508N98.04509P98.045 10G98.045 11H98.045 12J98.045 13K98.045 14L98.04514L98.045 14LRBK-003812I6H*

QCType

DUP

MSMSDRBK

Preparation Procedure

N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A

DateCompleted

11/10/199811/07/199811/10/199811/10/199811/07/199811/07/199811/07/199811/07/199811/07/199811/07/199811/07/199811/10/199811/10/199811/07/199811/07/199811/07/199811/07/1998

PrepBatch #

0001840P0001 839X0001840P0001840P0001 839X0001 839X0001839X0001 839X0001839X0001839X0001 839X0001840P0001 840P0001839X0001839X0001 839X0001839X

QCBatch #

000066 1Z000066 1Z0000661Z000066 1Z0000661Z0000661Z0000661Z0000661Z000066 1Z000066 1Z000066 1Z000066 1Z000066 1Z000066 1Z0000661 Z000066 1Z000066 1Z

* Samples marked with an asterisk are not in this sample delivery group but were analyzed with it for QC purposes.



SAMPLE ANALYSIS REPORT

Sample #:Matrix:Sample type:Amount analyzed:Dry/wet weight:Ash/dry weight:

Comment:

98.04502GSOILSAM2.460e-02 GWETN/AN/A

FIELDS BROOK, HOT SPOT

QC batch #:Prep batch #:Prep procedure:Analysis procedure:Analyst:QC type:

0000661Z0001840PN/ATHASANA

COUNTING INFORMATION

Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

AS01

Operator

DPG

ANALYTICAL RESULTS

Analyte

Th227TH228Th230Th232

Activity

2.37e+001.45e+001.38e+011.23e+00

± 2a Uncertainty

1.3e+001.6e+002.2e+006.7e-01

MDC

l.le+002.6e+OQ6.1e-015.6e-01

Unit

PCI/GWETPCI/GWETPCI/GWETPCI/GWET

Date

]]/nS / iQ9811/05/199811/05/199811/05/1998





Comment:

98.04503HSOILSAM2.552e-01 GWETN/AN/A

FIELDS BROOK


0000661Z0001839XN/ATHASANA


Date and time

11/06/1998 15:13

Duration (min)

1 000.0

Detector ID

AS01

Operator

DPG

ANALYTICAL RESULTS

Analyte

Th221Th228Th230Th232

Activity

3.89e-015.37e+003.57e+005.01e+00

± 2o Uncertainty

I.6e-014.9e-013.7e-014.5e-01

MDC

l.le-012.5e-016.0e-025.5e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:

98.04504JSOILSAM2.500e-02 GWETN/AN/A

FIELDS BROOK

QC batch #:Prep batch #:Prep procedure:Analysis procedure:Analyst:QCtype:



Date and time

11/09/199816:05

Duration (min)

1 000.0

Detector ID

AS02

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

-3.20e-013.73e+007.31e+004.05e+00

± 2a Uncertainty

6.9e-011.8e+001.6e+001.2e+00

MDC

1.8e+002.7e+006.9e-016.5e-01

Unit


Date

11/05/199811/05/199811/05/199811/05/1998





Comment:

98.04505KSOILSAM2.490e-02GWETN/AN/A

FIELDS BROOK




Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

AS03

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

7.72e-0l1.73e+009.4ie+001.27e+00

± 2o Uncertainty

l.Oe+OC1.6e+001 .8e+007.0e-01

MDC

1.6e+002.6e+005.3e-016.4e-OI

Unit


Date

11/05/199811/05/199811/05/199811/05/1998

US. ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY




Comment:

98.04506LSOILSAM2.548e-01 GWETN/AN/A

FIELDS BROOK




Date and time

11/06/1998 15:13

Duration (min)

1000.0

Detector ID

AS03

Operator

DPG

ANALYTICAL RESULTS

Analyle


Activity

l.Tle-Ol2.01e+00l.I4e+001.49e+00

± 2o Uncertainty

I.2c-013.0e-011.9e-012.2e-01

MDC

1.4e-OI2.5e-014.8e-025.8e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:

98.04507MSOILSAM2.579e-01 GWETN/AN/A

FIELDS BROOK




Date and time

11/06/1998 15:13

Duration (min)

1000.0

Detector ID

AS04

Operator

DPG

ANALYTICAL RESULTS

Analyte

Th227Th228Th230TH232

Activity

1.21e-011.61e+009.88e-01L05e-fOO

± 2c Uncertainty

l.le-012.8e-011.9e-011.9e-01

MDC

1.5e-012.7e-017.2e-024.5e-02

Unit


Date

1 1/04/199811/04/199811/04/199811/04/1998

UJS. ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY




Comment:


FIELDS BROOK


0000661Z0001839XN/ATHASDUP


Date and time

11/06/1998 15:13

Duration (min)

1000.0

Detector ID

AS06

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

9.81e-021.87e+001.20e+001.3le+00

± 2a Uncertainty

9.7e-023.0e-012.1e-012.2e-01

MDC

1.4e-012.6e-015.8e-026.3e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998




Comment:

98.04508NSOILSAM2.564e-01 GWETN/AN/A

RELDS BROOK, 6"-12"




Date and time

11/06/1998 15:14

Duration (min)

1000.0

Detector ID

AS07

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

5.47e-022.62e+003.06e+002.57e+00

± 2o Uncertainty

8.6e-023.5e-013.4e-013.1e-01

MDC

l.Sc-012.6e-017.2e-026.3e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:

98.04509PSOILSAM2.491e-01GWETN/AN/A

FIELDS BROOK, 12"-18"




Date and time

11/06/199815:14

Duration (min)

1000.0

Detector ID

AS08

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

7.89e-028.23e-011.03e+009.56e-01

± 2a Uncertainty

8.9e-022.2e-01I.8e-01l.Se-01

MDC

1.4c-012.5e-016.U-025.2e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:


FIELDS BROOK




Date and time

11/06/199815:14

Duration (min)

1000.0

Detector ID

AS09

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

1.58C-01

1.78e+006.72e-018.53e-01

± 2a Uncertainty

1.2c-013.2e-011.7e-011.9e-01

MDC

1.3e-0l2.8e-016.3e-027.0e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:


FIELDS BROOK




Date and time

11/06/199815:14

Duration (min)

1000.0

Detector ID

AS10

Operator

DPG

ANALYTICAL RESULTS

Analyte

Th227TH228Th230Th232

Activity

2.36e-013.86e+001.46e+001.44e+00

± 2o Uncertainty

i.4e-014.2e-012.3e-012.3e-01

MDC

1.3e-012.5e-015.8e-022.6e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:


FIELDS BROOK




Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

AS04

Operator

DPG

ANALYTICAL RESULTS

Analyte

TH227TH228Th230Th232

Activity

1.74e-012.00e+001.83e+001 .56e+00

± 2a Uncertainty

1.3e-0T

3.2e-012.7e-012.4e-01

MDC

1.7e-012.8e-017.6e-024.7e-02

Unit


Date

11/05/199811/05/199811/05/199811/05/1998





Comment:

98.04513KSOILSAM2.515e-01 GWETN/AN/A

FIELDS BROOK




Date and time

11/09/199816:05

Duration (min)

1000.0

Detector ID

AS06

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

1.85e-018.15e-011.l9e+009.13e-01

± 2a Uncertainty

1.3e-012.2e-012.0e-011.8e-01

MDC

1.4e-012.6e-OI5.6e-026.0e-02

Unit


Date

11/05/199811/05/199811/05/199811/05/1998





Comment:


FIELDS BROOK




Date and time

11/06/1998 15:14

Duration (min)

1000.0

Detector ID

ASH

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

4.50e-025.26e-OI7.74e-016.72e-01

± 2a Uncertainty

7.1e-021.8C-01I.6e-01l.Se-01

MDC

l.Se-Ol2.30-012.3e-025.3e-02

Unit


Date

11/04/199811/04/199811/04/19981 1/04/1998





Comment:


FIELDS BROOK


0000661Z0001839XN/ATHASMS


Date and time

11/06/1998 15:14

Duration (min)

1000.0

Detector ID

AS12

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

O.OOe-fOO8.10e-017.49e+006.87e-0l

± 2o Uncertainty

4.0e-022.2e-015.9e-011.6e-01

MDC

1.2C-012.5e-016.1e-026.6e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998





Comment:


FIELDS BROOK


0000661Z0001839XN/ATHASMSD


Date and time

11/06/1998 15:34

Duration (min)

1000.0

Detector ID

AS17

Operator

DPG

ANALYTICAL RESULTS

Analyte


Activity

8.03e-025.93e-017.61e+004.18e-01

± 2o Uncertainty

8.3e-021.9e-015.6e-0l1.2e-01

MDC

1.2e-012.5e-018.6e-026.2e-02

Unit


Date

11/04/199811/04/199811/04/199811/04/1998



QC Sample*: RBK-00381216H


QC batch #: 0000661ZPrep batch #: 0001839XPrep procedure: N/AAnalysis procedure: THAnalyst: ASQC type: RBK


Date and time

11/06/1998 15:34

Duration (min)

1000.0

Detector ID

AS18

Operator

DPG

ANALYTICAL RESULTS

Analyte

TH227Th228TH230TH232

Activity

1.32e-02-2.12e-021.88e-03

-6.87e-03

± 2a Uncertainty

1.5e-023.06-029.4e-034.1e-03

MDC

1.9e-Q25.9e-022.0e-021.9e-02

Unit

PCIPCIPCIPCI

Date

11/04/1998J "0-1/1 99811/04/199811/04/1998



QC BATCH SUMMARY

QC batch #: 0000661ZPreparation procedure: N/AAnalysis procedure: TH

NAREL Sample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04507M98.04508N98.04509P98.045 10G98.0451 1H98.045 12J98.045 13K98.045 14L98.04514L98.045 14LRBK-00381216H*

QCType

DUP

MSMSDRBK

Yield (%)

96.97 %94.82 %98.61 %91.13%98.06 %98.23 %90.80%99.38 %85.41 %93.62 %91.59%96.12%95.41 %93.56 %82.10%9o.92 %97.23 %

± 2a Uncertainty (%)

2.28 %2.17%2.33 %2.11 %2.22 %2.23 %2.04%2.24%2.01 %2.09%2.11 %2.28%2.18%2.15%1.90%2.21 %2.21 %

Analyst


* Samples marked with an asterisk are not in this sample delivery group but were analyzed with it for QC purposes.


QC Batch #: 0000661Z Analytical Procedure: TH


Sample ID

00381216H00381216H00381216H00381216H

Nuclide


Activity ± 2a

1.32e-02 ± 1.5e-02-2.12e-02 ± 3.0e-021.88e-03 ± 9.4e-03-6.87e-03 ± 4.1e-03

LABORATORY DUPLICATES (PCI/GWBT)

Sample ID

98.04507M98.04507M98.04507M

\04507M

Nuclide


Original ± 2a

1.21e-01 ± l.le-01l.Sle+00 ± 2.8e-019.88e-01 ± 1.9e-011.05e+00 ± 1.9e-01

Duplicate ± 2O

9.816-02 ± 9.7e-021.876+00 ± 3.06-011.206+00 ± 2.1e-011.31e+00 ± 2.2e-01

RPD

20.7215.0119.6021.72

Z

-0.31 OK1.09 OK1.34 OK1.53 OK


Sample ID

98.04514L98.04514L98.04514L98.04514L

Nuclide


Amt Added ± 2a


NO SPIKE DATA

Native ± 2<J

7.74e-01 ± 1.66-01

Measured ± 2a

7.49e+00 ± 5.9e-01

%R

116.39 1.89 OK


Sample ID

98.04514L98.04514L98.04514L\04514L

Nuclide


Amt Added ± 2o

NO SPIKE DATANO SPIKE DATA5.766+00 ± 4.5%

NO SPIKE DATA

Measured ± 2o

7.61e+00 ± 5.6e-01__. .. _̂ .... ...... .. ... _ ... . .

:

RPD: Z

2.04 0.21 OK

%R

118.78 2.17 OK

Analyst:

QA Officer:


U ANALYSES

REPORT OF SAMPLE DELIVERY GROUP #9800065

Project:Analysis Procedure:Date Reported:

FIELDS BROOKUranium12/03/1998

SAMPLES

NARELSample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04508N98.04509P98.045 10G98.0451 1H98.045 12J98.045 13K98.045 14L

Client Sample ID

R407SSR408SSR409SBR410SBR411SSR412SSR413SBR414SBR415SSR416SSR417SSR418SSR419SS

Type

SAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAMSAM

Matrix

SOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOILSOIL

DateCollected

07/28/199807/28/199807/28/199807/28/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/199807/29/1998

DateReceived

08/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/199808/03/1998

EXCEPTIONS

1. Packaging and Shipping - No problems were observed.2. Documentation - No problems were observed.3. Sample Preparation - No problems were encountered.4. Analysis - The spectrum for NAREL 98.4502 had poor resolution. NAREL suggests that the results be

considered estimations of the uranium in 98.4502.5. Holding Times - All holding times were met.

QUALITY CONTROL

1. QC samples - All QC analysis results met NAREL acceptance criteria except the 235U matrix spike duplicateresult which had a recovery of 152% and therefore failed NAREL acceptance criteria.

2. Y;elds - All chemical yields were within acceptance limits.3. Instruments - Response and background checks for all instruments used in these analyses met NAREL

acceptance criteria.

CERTIFICATION

I certify that this data report complies with the terms and conditions of the Quality Assurance Project Plan, except asnoted above. Release of the data contained in this report has been authorized by the Chief of the Monitoring andAnalytical Services Branch and the NAREL Quality Assurance Coordinator, or their designees, as verified by thefollowing signatures.

James B. MeQuality Assi nce Coordinator

s, Ph.D.Cfnef, Monitoring and Analytical Services Branch

GENERAL INFORMATION

SAMPLE TYPES

BLD Blind sampleDBD Double blind sampleFBK Field blankSAM Normal sample

ANALYSIS QC TYPES

ANA Normal analysisDUP Laboratory duplicateLCS Laboratory control sample (blank spike)MS Matrix spikeMSD Matrix spike duplicateRBK Reagent blank

QUALITY INDICATORS

RPD Relative Percent Difference%R Percent RecoveryZ Number of standard deviations by which a QC measurement differs from the expected value

EVALUATION OF QC ANALYSES

A reagent blank result is considered unacceptable if it is more than 3 standard deviations below zero or more than 3standard deviations above a predetermined upper control limit. For some analyses NAREL has set the upper controllimit at zero. For others the control limit is a small positive number.

NAREL evaluates the results of duplicate and spike analyses using "Z scores." A Z score is the number of standarddeviations by which the QC result differs from its ideal value. The score is considered acceptable if its absolute valueis not greater than 3.

The Z score for a spiked sample is computed by dividing the difference between the measured value and the target valueby the combined standard uncertainty of the difference.

The Z score for a duplicate analysis is computed by dividing the difference between the two measured values by thecombined standard uncertainty of the difference. When the precision of paired MS/MSD analyses is evaluated, thenative sample activity is subtracted from each measured value and the net concentrations are then converted to totalactivities before the Z score is computed.

Each standard uncertainty used to compute a Z score includes an additional fixed term to represent sources ofmeasurement error other than counting error. This additional term is not used in the evaluation of reagent blanks.

NAREL reports the "relative percent difference," or RPD, between duplicate results and the "percent recovery," or %R,for spiked analyses, but does not use these values for evaluation.


U ANALYSESSDG #9800065

ANALYSIS SUMMARY

Analysis Procedure: UTitle: Uranium

NAREL Sample #

98.04502G98.04503H98.04504J98.G4505K98.04506L98.04507M98.04507M98.04508N98.04509P98.045 10G98.0451 1H98.045 12J98.045 13K98.045 14L98.045 14L98.04514LRBK-00381220D*

QCType

DUP

MSMSDRBK

Preparation Procedure

N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A

DateCompleted

1 1/10/199811/07/199811/10/199811/10/199811/07/199811/07/199811/07/199811/07/199811/07/199811/07/199811/07/199811/10/199811/10/199811/07/199811/07/199811/07/199811/07/1998

PrepBatch #

0001 842R0001841Q0001 842R0001 842R0001841Q0001841Q0001841Q0001841Q0001841Q0001841Q0001841Q0001842R0001842R0001841Q0001841Q0001841Q0001841Q

QCBatch #

0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A0000662A

Samples marked with an asterisk are not in this sample delivery group but were analyzed with it for QC purposes.





Comment:


FIELDS BROOK, HOT SPOT


0000662A0001842RN/AUASANA


Date and time

11/09/199816:05

Duration (min)

1000.0

Detector ID

AS07

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.7904012.70e+001.470401

± 2<r Uncertainty

3.0e+001.264002.7e400

MDC

1.004008.3e-017.0e-01

Unit

PCI/GWETPCI/GWETPCI/GWET

Date

11/09/199811/09/199811/09/1998





Comment:


RELDS BROOK


0000662A0001841QN/AUASANA


Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS 19

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

2.74e+001.76e-012.44e+00

± 2a Uncertainty

3.6e-019.2e-023.4e-01

MDC

9.6e-027.8e-022.7e-02

Unit

PCI/GWETPC1/GWETPCI/GWET

Date

;.;ou/i99811/06/199811/06/1998


UANALYSESSDG #9800065


Comment:


FIELDS BROOK




Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

AS08

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

4.83e+™3.61e-015.13e+00

± 2a Uncertainty

1.3e+004.2e-011.3e+00

MDC

6.3e-016.1e-015.1e-01

Unit


Date

11/09/199811/09/199811/09/1998





Comment:

98.04505KSOILSAM2.490e-02 GWETN/AN/A

RELDS BROOK




Date and time

11/09/199816:05

Duration (min)

1000.0

Detector ID

AS09

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

8.98e+006.53e-018.22e+00

± 2c Uncertainty

2.1e+005.9e-012.0e+00

MDC

l.Oe+003.9e-018.6e-01

Unit


Date

11/09/199811/09/199811/09/1998





Comment:


FIELDS BROOK




Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS20

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.12e+006.00e-02I.09e+00

± 2o Uncertainty

2.1e-0'5.4e-022.0e-01

MDC

5.1e-026.8e-027.0e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:


RELDS BROOK




Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS21

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

4.15e+002.77e-015.08e+00

± Ixs Uncertainty

4.4e-01l.le-015.1e-01

MDC

6.7e-027.2e-026.3e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:


FIELDS BROOK


0000662A000184IQN/AUASDUP


Date and time

11/06/199815:35

Duration (min)

1000.0

Detector ID

AS22

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

3.55e+002.81e-014.44e+00

± 2o Uncertainty

4-Oe-Oll.le-014.7e-01

MDC

6.2e-026.4e-024.1e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:

98.04508NSOILSAM2.564e-01 GWETN/AN/A

RELDSBROOK,6"-12"




Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS23

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

6.98e+006.91e-019.2U+00

± 2o Uncertainty

6.7e-011.8e-018.2e-01

MDC

5.7e-025.2e-026.2e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:

98.04509PSOILSAM2.491e-01 GWETN/AN/A

FIELDS BROOK, 12"-18"




Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS24

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.25e+00I.34e-0l1.16e+00

± 2a Uncertainty

2.2e-0l7.7e-022.1e-01

MDC

7.0e-026.1e-024.4e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:

98.04510GSOILSAM2.551e-01GWETN/AN/A

FIELDS BROOK




Date and time

11/06/199815:35

Duration (min)

1000.0

Detector ID

AS25

Operator

DPG

ANALYTICAL RESULTS

Analyle

U234U235U238

Activity

1.62e+002.42e-011.56e+00

± 2a Uncertainty

2.4e-01l.Oe-012.4e-0l

MDC

6.2e-028.1e-026.2e-02

Unit


Date

P.. '06/2 99811/06/199811/06/1998





Comment:


FIELDS BROOK




Date and time

11/06/199815:35

Duration (min)

1 000.0

Detector ID

AS26

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.22e+001.22e-011.40e+00

± 2o Uncertainty

1.9e-0l6.2e-022.1e-01

MDC

4.3e-022.3e-023.9e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:


FIELDS BROOK




Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

AS10

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.96C+002.98e-012.47e+00

± 2a Uncertainty

2.9e-01Ue-OI3.3e-01

MDC

7.2e-023.1e-025.2e-02

Unit


Date

11/09/19981 1/09/199811/09/1998





Comment:

98.04513KSOILSAM2.515e-01GWETN/AN/A

RELDS BROOK




Date and time

11/09/1998 16:05

Duration (min)

1000.0

Detector ID

ASHOperator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

1.06e+007.20e-02l.OSe+00

± 2o Uncertainty

2-Oe-O1

5.7e-022.0e-01

MDC

4.3e-026.0e-025.0e-02

Unit


Date

11/09/199811/09/199811/09/1998





Comment:


FIELDS BROOK




Date and time

11/06/199815:35

Duration (min)

1000.0

Detector ID

AS27

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

9.20e-019.09e-027.97e-01

± 2o Uncertainty

l.Se-014.9e-021.4e-01

MDC

2.8e-021.9e-021.6e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:


FIELDS BROOK



0000662A0001841QN/AUASMS

Date and time

11/06/199815:35

Duration (min)

1000.0

Detector ID

AS28

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

4.27e-f012.39e+004.31e+01

± 2o Uncertainty

2.7e+003.3e-012.7e+00

MDC

3.1e-022.1e-023.6e-02

Unit


Date

11/06/199811/06/199811/06/1998





Comment:


RELDS BROOK


0000662A0001841QN/AUASMSD


Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS29

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

4.36e+012.88e+004.40e+01

± 2o Uncertainty

2.8e+003.8e-012.9e+00

MDC

3.3e-022.3e-023.3e-02

Unit


Date

11/06/199811/06/199811/06/1998



QC Sample #: RBK-00381220D


QC batch #: 0000662APrep batch #: 0001841QPrep procedure: N/AAnalysis procedure: UAnalyst: ASQC type: RBK


Date and time

11/06/1998 15:35

Duration (min)

1000.0

Detector ID

AS30

Operator

DPG

ANALYTICAL RESULTS

Analyte

U234U235U238

Activity

2.79e-029.71e-031.22e-02

± 2o Uncertainty

1.3e-029.1e-038.6e-03

MDC

9.3e-03l.le-024.6e-03

Unit

PCIPCIPCI

Date

11/06/199811/06/199811/06/1998



QC BATCH SUMMARY

QC batch #:Preparation procedure:Analysis procedure:

0000662AN/AU

NAREL Sample #

98.04502G98.04503H98.04504J98.04505K98.04506L98.04507M98.04507M98.04508N98.04509P98.045 10G98.045 11 H98.045 12J98.045 13K98.045 14L98.045 14L98.045 14LRBK-00381220D*

QCType

DUP

MSMSDRBK

Yield (%)

86.35 %85.61 %86.95 %90.30 %88.70 %92.74 %98.76 %86.75 %92.10%84.50 %93.96 %91.99%94.16%90.74 %87.55 %85.87 %95.36 %

± 2c Uncertainty (%)

6.00%5.70 %5.44%6.42 %5.78 %5.89%6.29 %5.67%5.97 %5.29%5.56%6.00%5.95 %5.20 %5.16%5.18%5.56 %

Analyst


* Samples marked with an asterisk are not in this sample delivery group but were analyzed with it for QC purposes


QC Batch #: 0000662A Analytical Procedure: U


Sample ID

00381220D00381220D00381220D

Nuclide

U234U235U238

Activity ± 20

2.79e-02 ± 1.3e-029.71e-03 ± 9.1e-031.22e-02 ± 8.6e-03

LABORATORY DUPLICATES (PCI/GWET)

Sample ID- —— - —— -98.04507M98.04507M98.04507M

Nuclide- - - - - - - -U234U235U238

Original ± 2c

4.15e+00 ± 4.4e-012.77e-01 ± l.le-015.08e+00 ± 5-le-Ol

Duplicate ± 2a

3.556+00 ± 4.0e-012.81e-01 ± l.le-014.44e+00 ± 4.7e-01

RPDi Z

15.56: -1.48 OK1.25 0.04 OK

13.46 -1.33 OK


Sample ID

98.04514L98.04514L98.04514L

Nuclide

U234U235U238

Amt Added ± 2 a

4.00e+01 ± 5.5%1.84e-t-00 ± 5.5%4.00e+01 ± 5.5%

Native ± 2a

9.20e-01 ± 1.5e-019.09e-02 ± 4.9e-027.97e-01 ± 1.4e-01

Measured ± 2o

4.27e+01 ± 2.7e+002.39e+00 ± 3.3e-014.316+01 ± 2.7e+00

%R

104.52125.45105.77

Z

0.65 OK2.21 OK0.83 OK


Sample ID

98.04514L98.04514L98.04514L

'-valyst:

QA Officer:

Nuclide

U234U235U238

Amt Added

3.99e+011.83e+003.99e+01

±

±±±

20

5.5%5.5%5.5%

Measured

4.36e+012.88e+004.406+01

±

±±±

20

2.86+003.86-012.9e+00

RPDJ

2.2219.122.35'

Z

0.261.540.27

OKOKOK

"

106.87151.96108.28

0.93.81.1

Smith,

Documents

EPA MEMO RE: RADIOCHEMICAL RESULTS FOR FIELDS …Fields Brook and Sanyo Samples FROM: John Griggs, Chief ... The activity, uncertainty, and MDC are given in the same units. The activity