ED SZ* + = U · 2013-07-17 · 0 t ED SZ* + = U UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 9 75 Hawthorne Street San Francisco , CA 94105-3901 June 21, 199 9 REDACTED Bell

0

tED SZ*

+ = U

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

REGION 9

75 Hawthorne StreetSan Francisco , CA 94105-390 1

June 21, 199 9

REDACTED

Bell Canyon , CA 91307

REDACTED

30 Hackamore Lan e

Bell Canyon , CA 91307

Re: Results from Bell Canyon Split Samplin g

Dear' ----REDACTED-,---

This letter is in response to your letters, dated May 10, 1999 and May 18, 1999 . Enclosed

with this letter are laboratory analysis results for Strontium, Plutonium, Uranium and Thorium .

The replacement of laboratory equipment took longer than expected, delaying the results . This

completes the laboratory analysis for EPA's split samples for the Bell Canyon Soil Sampling .

REDACTED 'letter notes-' trancfPr of authority to the Environmental Protection Agenc y(EPA), along with a transfer of aEDACTEbudget to the EPA to support work in determiningwhether nuclear and chemical testing at the Rocketdyne facility resulted in serious health

damage." I would like to clarify that the EPA you refer to is the California EPA, not the U .S.

EPA. At this time, the California Department of Toxic Substances Control (part of the CaliforniaEPA), the Department of Health Services Radiologic Health Branch and the U .S . Department of

Energy are responsible for the investigation and remediation of contamination from the Boeing

Rocketdyne Santa Susana Field Laboratory. EPA has been involved, most recently, byevaluating investigations of radioactive contamination conducted by Boeing and DOE ; more

specifically, the Area IV Survey and the Building Decontamination and Decommissioning

Program .

EPA will be pleased to share our review of Rocketdyne's Bell Canyon Area SoilSampling Report with you . However, we may take several more months to complete our review .

004282 f:Z'C

CONFIDENTIAL LEVEL I - UNDER PROTECTIVE ORDER,

United States District Court for the Central District ofCalifornia, No. CV 97-1554

BNA0872591 0

HDMSE00587314

r.

If I can be of further assistance to you, please feel free to call me at (415) 744-2070 .

Sincerely ,

Tom KellyProject Manager, Boeing RocketdyneSanta Susana Field Laboratory

Enclosures

cc: Dianne Feinstein, Senator (w/o enclosure )Elton Gallegly, U .S . Representative (w/o enclosure)Assemblywoman Shiela Kuehl (w/o enclosure)Frank Schillo, Ventura County Supervisor (w/o enclosure)Penny Nakashima, DTS CClem Welsh, DHSSteve Hsu, DH SWayne Chiou, LARWQCBJerome Raskin, SSFL Workgroup

Sheldon Plotkin, SSFI, Workgroup

Dan Hirsch, SSFL WorkgroupJoe Lyou, SSFL Workgroup

Barbara Johnson, SSFL Workgroup

Steve Lafflam, Boeing, Rocketdyn e



BNA0872591 1

HDMSE00587315

J~~teo sr,~~sUNITED STATES ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RADIATION AND INDOOR AI R~~~ Q National Air and Radiation Environmental Laborato ry

Z 0~ 540 ;South Morris Avenue Mont AL 36115 2601omeG~\ , g ry,

ppocE (334) 270-340 0

June 4, 199 9

MEMORANDUM

SUBJECT : Radiochemical Results forBell Canyon Samples

FROM: John Griggs, ChiefMonitoring and Ar lytical Services Branch

TO: Tom Kelly, Environmental EngineerRegion 9

Attached is a data packages for isotopic thorium analysis of sediment samples collectedfrom Bell Canyon in Ventura County . The samples constitute NAREL batch number 9800074 .

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 lessthan 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 compa rison of two groups of samples .

For all analyses except gamma spectroscopy, it is the policy of NAREL to report results

as generated, whether positive, negative, or zero, together with the 2-sigma measurement

uncertainty 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-sigma

uncertainty for a radionuclide measured by gamma spectroscopy are reported only if the nuclide

is detected; so, the results of gamma analyses are never zero or negative . Nuclides that are not

detected do not appear in the report, with the exception of Ba- 140, Co-60, Cs- 137, I-131, K-40,

Ra-226, and Ra-228 . If one of these seven 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 .go vRecycled/ Recyclable . Printed with Vegetable Oil Based Imes on Recycled Paper (Minimum 25% Postconsumer )

CONFIDENTIAL LEVEL I - UNDER PROTECTIVE ORDER ,


BNA08725912

HDMSE00587316

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

Attachments

cc : Mike Bandrowski, Region 9, w/o attachmentsMary Clark, (6601J), w/o attachmentsEd Sensintaffar, NAREL



BNA08725913

HDMSE00587317

U.S. ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y

TH ANALYSE S

REPORT OF SAMPLE DELIVERY GROUP #9800074

Project: BELL CANYON

Analysis Procedure : ThoriumDate Reported : 06/04/1999

SAMPLE S

NARELSample #

Client Sample ID Type MatrixDateCollected

Dat eReceived

98 .05801V RHO12 SAM SEDIMENT 06/11/1998 10/19/199 898 .05802W RHO15 SAM SEDIMENT 06/11/1998 10/19/199 898 .05803X RH021 SAM SEDIMENT 06/12/1998 10/19/199 898 .05804Y RH025 SAM SEDIMENT 06/12/1998 10/19/199 898 .05805Z RHO41 SAM SEDIMENT 06/16/1998 10/19/199 898 .05806A RH046 SAM SEDIMENT 06/16/1998 10/19/199 898 .05807B RH047 SAM SEDIMENT 06/16/1998 10/19/199 898 .05916F RI-1003 SAM SEDIMENT 06/10/1998 10/28/199 898 .05917G RI-1004 SAM SEDIMENT 06/10/1998 10/28/199 898 .05918H RI-1005 SAM SEDIMENT 06/10/1998 10/28/199 8

EXCEPTION S

1 . Packaging and Shipping - No problems were observed .

2 . Documentation - No problems were observed .3 . Sample Preparation - No problems were encountered .4 . Analysis - The duplicate and the matrix spike duplicate failed NAREL's acceptance criteria on the original

analysis of this SDG. The entire SDG was reanalyzed . NAREL sample 98 .5804 had a yield that was slightlyabove NAREL's acceptance criteria . The results of the reanalyses are reported in this data package .

5 . Holding Times - All holding times were met .

QUALITY CONTROL

I . QC samples - All QC analysis results met NAREL acceptance criteria .2. Yields - All chemical yields were within acceptance limits except NAREL sample 98 .5804 which had a yield

of 103 .12% ± 2.18% which is slightly higher than NAREL's acceptance limit of 100% . The Quality AssuranceCoordinator approved this yield .

3 . Instruments - Response and background checks for all instruments used in these analyses met NARELacceptance criteria.



BNA0872591 4

HDMSE00587318

• CERTIFICATION

I certify that this data report complies with the terms and conditions of the Quality Assurance Project Plan, except as

noted 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 the

following signatures .

James B . MooreQuality Assurance Coordinator

riggs, Ph .D .

6y fDate

f, Monitoring and Analytical Services Branch



Date

BNA0872591 5

HDMSE00587319

GENERAL INFORMATIO N

SAMPLE TYPES

BLD Blind sampl eDBD Double blind sarrrpleFBK Field blankSAM Normal sample

ANALYSIS QC TYPES

ANA Normal an alysisDUP Laboratory duplicat eLCS Laboratory control sample (blank spike)MS Matrix spikeMSD Matrix spike duplicateRBK Reagent blank

QUALITY INDICATOR S

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

EVALUATION OF QC ANALYSE S

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 con trol limit . For some analyses NAREL has set the upper con trollimit at zero . For others the con trol 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 .



BNA0872591 6

HDMSE00587320

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

TH ANALYSESSDG #980007 4

ANALYSIS SUMMAR Y

Analysis Procedure: THTitle : Thorium

NAREL Sample #TQyCpe

Preparation ProcedureC

oDatempleted Batpch #

QCBatch #

98.05801V N/A 05/27/1999 0002595A 0000967Q98.05801V DUP N/A 05/27/1999 0002595A 0000967Q98.05802W N/A 05/27/1999 0002595A 0000967Q98.05803X N/A 05/27/1999 0002595A 0000967Q98.05803X MS N/A 05/27/1999 0002595A 0000967Q98.05803X MSD N/A 05/27/1999 0002595A 0000967 Q98.05804Y N/A 05/27/1999 0002595A 0000967Q98.05805Z N/A 05/27/1999 0002595A 0000967Q98.05806A N/A 05/27/1999 0002595A 0000967Q98.05807B N/A 05/27/1999 0002595A 0000967Q98.05916F N/A 05/27/1999 0002595A 0000967Q

98.05917G N/A 05/27/1999 0002595A 0000967Q98.05918H N/A 05/27/1999 0002595A 0000967QRBK- 00389809N * RBK N/A 05/28/1999 0002595A 0000967Q

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



BNA0872591 7

HDMSE00587321


TH ANALYSESSDG #9800074

SAMPLE ANALYSIS REPORT

Sample # : 98.05801V QC batch # : 0000967QMatrix : SEDIMENT Prep batch #: 0002595ASample type: SAM Prep procedure : N/AAmount analyzed : 2.603e-0i GASH Analysis procedure : TI-IDry/wet weight : 78.66 % Analyst : ASAsh/dry weight :

Comment :

99.00 %

BELL CANYON

QC type : ANA

COUNTING INFORMATION

Date and time Duration (min) Detector ID Operator

05/26/1999 16 :26 1000 .0 ASO 1 DPG

ANALYTICAL RESULTS

Analyte Activity t 2e Uncertainty MDC Unit Dat e

Th227 5 .11e-02 8 .Oe-02 1 .4e-01 PCUGDRY 05/25/1999Th228 7 .96e-01 I .6e-01 1 .0e-O1 PCUGDRY 05/25/1999Th230 5 .33e-O1 1 .3e-O1 5 .1e-02 PCUGDRY 05/25/199 9Th232 8 .35e-O1 1 .6e-01 5 .9e-02 PCUGDRY 05/25/1999



BNA0872591 8

HDMSE00587322

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

TIE ANALYSESSDG #980007 4

SAMPLE ANALYSIS REPOR T

Sample # : 98.0580ly QC batch #: 0000967QMatrix : SEDIMENT Prep batch # : 0002595 ASample type : SAM Prep procedure : N/AAmount analyzed : 2 .572e-0l GASH Analysis procedure : THDry/wet weight: 78.66 % Analyst : ASAsh/dry weight:

Comment :

99,00 %

BELL CANYON

QC type : DUP

COUNTING INFORMATIO N

Date and time I)uration (min) Detector ID Operator

05/26/1999 16 :26 1000 .0 AS02 DPG

ANALYTICAL RESULTS

Analyte Activity ± 2a Uncertainty MDC Unit Date

Th227 -9 .15e-03 4.7e-02 1 .3e-01 PCUGDRY 05/25/1999Th228 1 .06e+00 1 .9e-0l 1 .2e-01 PCUGDRY 05/25/199 9Th230 5.59e-0i 1 .3e-01 6 .5e-02 PCUGDRY 05/25/199 9Th232 9.42e-01 1 .7e-0l 3 .8e-02 PCUGDRY 05/25/1999



BNA0872591 9

HDMSE00587323




Sample # : 98 .05802W QC batch #: 00009670Matrix : SEDIMENT Prep batch #: 0002595ASample type : SAM Prep procedure : N/AAmount analyzed : 2 .544e-01 GASH Analysis procedure: THDry/wet weight : 81 .78 % Analyst: ASAsh/dry weight :

Comment :

94 .80 %

BELL CANYON

QC type : ANA


Date and time Duration ( min) Detector ID Operato r

05/26/1999 16 :26 1000.0 AS 05 DP G

ANALYTICAL RESULTS

Analyte Activity ± 26 Uncertainty MDC Unit Date

Th227 7.20e-02 7 .5e-02 1 .le-01 PCUGDRY 05 125/1999Th228 1 .56e+00 2.2e-01 9 .3e-02 PCUGDRY 05 125/199 9Th230 8.18e-01 1 .6e-01 4 .4e-02 PCUGDRY 05/25/199 9Th232 1 .23e+00 1 .9e-01 3 .8e-02 PCUGDRY 05/25/1999



BNA08725920

HDMSE00587324

U.S. ENVIRONMENTAL PROTECTION AGENC YNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY



Sample #: 98.05803X QC batch # : 0000967QMatrix : SEDIMENT Prep batch # : 0002595ASample type : SAM Prep procedure : N/A

Amount analyzed : 2 .559e-0I GASH Analysis procedure : THDry/wet weight : 81.31 % Analyst : ASAsh/dry weight : 99 .20% QC type : ANA

Comment : BELL CANYON-BUFFER ZONE DRAINAG E


Date and time Dura tion (min) Detector ID Operator

05/26/1999 16 :26 1000.0 AS06 DPG

ANALYTICAL RESULTS

Analyte Ac tivity ± 26 Uncertainty MDC Unit Dat e

Th227 3.21e-02 6.7e-02 1 .3e-01 PCUGDRY 05/25/1999Th228 5 .82e-O1 1 .4e-01 9 .5e-02 PCUGDRY 05/25/1999Th230 4.13e-0l 1 .le-01 3.9e-02 PCUGDRY 05/25/1999Th232 413e-01 1 .le-01 S . 5e -02 PCUGDRY 05/25/1999



BNA0872592 1

HDMSE00587325




Sample #: 98.05803X QC batch # : 0000967QMatrix : SEDIMENT Prep batch # : 0002595 ASample type: . SAM Prep procedure : N/A

Amount analyzed : 2 .600e-01 GASH Analysis procedure : TH

Dry/wet weight : 81 .31 % Analyst : AS

Ash/dry weight : 99.20 % QC type : MS




05/26/1999 16 :26 1000 .0 AS08 DPG

ANALYTICAL RESULTS

Analyte Acti v ity 26 Uncertainty MDC Unit Dat e

Th227 3.20e-02 5 .8e-02 1 .1e-01 PCUGDRY 05/25/1999Th228 6.61e-01 1 .4e-01 9.2e-02 PCUGDRY 05/25/1999Th230 6 .83e+0D 4.9e-01 5.7e-02 PCUGDRY 05/25/199 9

Th232 7 .07e-0 :1 1 .4e-01 3 .3e-02 PCUGDRY 05/25/1999



BNA08725922

HDMSE00587326




Sample # : 98 .05803X QC batch # : 0000967QMatrix : SEDIMENT Prep batch # : 0002595ASample type : SAM Prep procedure : N/A

Amount analyzed: 2.632e-01 GASH Analysis procedure : THDry/wet weight : 81 .31 % Analyst: ASAsh/dry weight : 99.20% QC type : MS D




05/26/1999 16 :26 1000.0 AS09 DPG

ANALYTICAL RESULTS


Th227 1 .73e-02 6 .6e-02 1 .4e-01 PCUGDRY 05/25/199 9Th228 8 .50e-01 1 .9e-01 1 .Oe-01 PCUGDRY 05/25/199 9

Th230 7 .12e+00 5 .7e-01 7 .4e-02 PCUGDRY 05/25/199 9Th232 6.85e-O1 1 .6e-01 4.8e-02 PCUGDRY 05/25/1999



BNA08725923

HDMSE00587327




Sample # : 98.05804Y QC batch # : 0000967QMatrix : SEDIMENT Prep batch #: 0002595ASample type : SAM Prep procedure : N/AAmount analyzed : 2.588e-01 GASH Analysis procedure : THDry/wet weight: 87.79 % Analyst: ASAsh/dry weight :

Comment :

99.20 %

BELL CANYON-PARK CREEK

QC type : ANA


Date and ti me I)uration (min) Detector ID Operator

05/26/1999 16 :26 1000.0 AS 10 DPG

ANALYTICAL RESULTS

Analyte Activity ± 2a Uncertainty MDC Unit Dat e

Th227 9 .06e-03 4.2e-02 1 .Oe-O1 PCUGDRY 05/25/1999Th228 5 .61e-01 1 .4e-01 8 .6e-02 PCUGDRY 05/25/1999Th230 4 .54e-O1 1 .2e-01 6.le-02 PCUGDRY 05/25/1999Th232 5 .09e-O1 1 .2e-O1 5 .4e-02 PCUGDRY 05/25/1999



BNA08725924

HDMSE00587328


TH ANALYSE SSDG #980007 4


Sample # : 98 .058052 QC batch # : 0000967QMatrix : SEDIMENT Prep batch #: 0002595ASample type : SAM Prep procedure : N/A

Amount analyzed : 2.538e-01 GASH Analysis procedure : THDry/wet weight : 93 .73 % Analyst : ASAsh/dry weight : 94.60 % QC type : ANA

Comment : BELL CANYON-BACKGROUND



05/26/1999 16 :26 1000.0 AS 11 DPG

ANALYTICAL RESULTS

Analyte Ac tivity ± 2a Uncertainty MDC Unit Date

Th227 5 .29e-02 7 .5e-02 1 .3e-O1 PCUGDRY 05/25/199 9Th228 1 .28e+00 2.Oe-01 8 .Oe-02 PCUGDRY 05/25/199 9Th230 1 .39e+00 2.le-01 5 .3e-02 PCUGDRY 05/25/199 9Th232 1 .40e+00 2.le-01 4 .8e-02 PCUGDRY 05/25/199 9



BNA08725925

HDMSE00587329




Sample # : 98 .05806,A QC batch #: 0000967QMatrix : SEDIMENT Prep batch # : 0002595ASample type : SAM Prep procedure: N/A

Amount analyzed : 2.524e-01 GASH Analysis procedure : TH

D ry/wet weight : 84.31 % Analyst : ASAsh/dry weight : 93 .00 % QC type : ANA

Comment : BELL CANYON-SILTSTONE CHATSWORTH FM .



05/26/1999 16 :26 1000.0 AS 12 DPG

ANALYTICAL RESULT S


Th227 2.96e-01 1 .4e-01 1 .2e-01 PCUGDRY 05/25/1999Th228 1 .60e+00 2 .3e-01 9 .Oe-02 PCIJGDRY 05/25/199 9

Th230 1 .29e+0O 2.Oe-0l 3 .7e-02 PCUGDRY 05/25/1999Th232 1 .32e+O0 2 .Oe-01 4.4e-02 PCUGDRY 05/25/199 9



BNA0872592 6

HDMSE00587330




Sample # : 98 .05807B QC batch # : 0000967QMatr ix : SEDIMENT Prep batch # : 0002595ASample type : SAM Prep procedure : N/AAmount analyzed: 2.530e-01 GASH Analysis procedure : THDry/wet weight : 90.19% Analyst: ASAsh/dry weight : 92.60% QC type : ANA

Comment: BELL CANYON-BUFFER ZONE DRAINAGE


Date and time Duration ( min) Detector ID Operator

05/26/1999 16 :26 1000.0 AS 17 DPG

ANALYTICAL RESULTS


Th227 1 .04e-01 9 .0e-02 1 .2e-01 PCUGDRY 05/25/1999Th228 1 .46e+00 2 .2e-01 1 .le-01 PCUGDRY 05/25/1999Th230 1 .32e+00 2.0e-01 7 .0e-02 PCI/GDRY 05/25/1999

Th232 1 .19e+00 2 .0e-01 8 .6e-02 PCUGDRY 05/25/1999

bmffisw~



BNA0872592 7

HDMSE00587331

U.S. ENVIRONMENTAL PROTECTION AGENC YNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y

TH ANALYSE SSDG #9800074


Sample #: 98.05916F QC batch # : 0000967QMatrix : SEDIMENT Prep batch #: 0002595ASample type : SAM Prep procedure : N/AAmount analyzed : 2.556e-01 GASH Analysis procedure: THDry/wet weight : 96.53% Analyst : ASAsh/dry weight :

Comment :

96.40 %

BELL CANYON

QC type : ANA



05/26/1999 16 :26 1000 .0 AS 19 DPG

ANALYTICAL RESULTS


Th227 8 .22e-02 8 .7e-02 1 .3e-01 PCI/GDRY 05/25/1999Th228 1 .58e+00 2 .3e-01 1 .le-01 PCUGDRY 05/25/1999Th230 1 .45e+00 2 .le-01 6.5e-02 PCUGDRY 05/25/1999Th232 1 .47e+00 2.2e-01 5 .0e-02 PCUGDRY 05/25/199 9



BNA08725928

HDMSE00587332

U.S. ENVIRONMENTAL PROTECTION AGENC YNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y



Sample #: 98 .05917G QC batch # : 0000967QMatrix : SEDIMENT Prep batch # : 0002595ASample type : SAM Prep procedure : N/AAmount analyzed : 2 .584e-01 GASH Analysis procedure : THDry/wet weight : 82.86% Analyst: ASAsh/dry weight :

Comment:

99.00 %

BELL CANYON

QC type : ANA



05/26/1999 16 :26 1000.0 AS 20 DPG

ANALYTICAL RESULTS

Analyte Ac ti vi ty ± 2a Uncertainty MDC Unit Date

Th227 2.21e-02 4 .9e-02 9.8e-02 PCUGDRY 05/25/1999Th228 5.00e-01 1 .3e-01 9.3e-02 PCUGDRY 05/25/1999Th230 4.00e-01 1 .le-01 4.9e-02 PCUGDRY 05/25/199 9Th232 6 .06e-01 1 .3e-01 4.8e-02 PCUGDRY 05/25/199 9



BNA08725929

HDMSE00587333

U.S. ENVIRONMENTAL PROTECTION AGENCYNATIONAL MR AND RADIATION ENVIRONMENTAL LABORATOR Y

TH ANALYSESSDG #980007 4


Sample #: 98.05918H QC batch # : 0000967QMatrix : SED IMENT Prep batch # : 0002595ASample type : SAM Prep procedure : N/AAmount analyzed : 2.603e-0 :1 GASH Analysis procedure : THDry/wet weight : 83 .38% Analyst: ASAsh/dry weight:

Comment:

97 .40 %

BELL CANYON

QC type: ANA



05/26/1999 16 :26 1000.0 AS21 DPG

ANALYTICAL RESULTS

Analyze Activity ± 2a Uncertainty MDC Unit Date

Th227 2 .07e-02 4.6e-02 9.2e-02 PCUGDRY 05/25/1999Th228 7.56e-01 1 .5e-01 7.7e-02 PCUGDRY 05/25/1999Th230 7.50e-01 1 .4e-01 4.6e-02 PCUGDRY 05/25/1999Th232 5.44e-01 1 .2e-01 5.3e-02 PCUGDRY 05/25/1999



BNA08725930

HDMSE00587334




QC Sample #: RBK-00389809N QC batch #: 0000967QPrep batch #: 0002595APrep procedure; N/AAnalysis procedure : THAnalyst: ASQC type: RBK



05/27/1999 12 :02 1000.0 AS01 DPG

ANALYTICAL RESULTS


Th227 -8 .82e-03 1 .le-02 3 .8e-02 PCI 05/25/199 9Th228 9.90e-03 1 .6e-02 2 .7e-02 PCI 05/25/1999Th230 3.96e-03 7 .2e-03 1 .3e-02 PCI 05/25/199 9Th232 -1 .32e-03 4 .9e-03 1 .6e-02 PCI 05/25/199 9



BNA0872593 1

HDMSE00587335



QC BATCH SUMMARY

QC batch #: 0000833BPreparation procedure: N/AAnalysis procedure: TH

NAREL Sample # QCType

'field (%) ± 2a Uncertainty (%) Analys t

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



BNA08725932

HDMSE00587336



QC BATCH SUMMARY

QC batch #: 0000967QPreparation procedure : N/AAnalysis procedure : TH

NAREL Sample # Q e Yield (%) ± 2a Unce rtain ty (%) Analys t

98.05801V 99.58 % 2.12 % AS98.05801V DUP 100.20% 2.11% AS98.05802W 98.58 % 2.05 % AS98.05803X 102 .56 % 2.17 % AS98.05803X MS 97.04 % 2.06 % AS98.05803X MSD 99.51 % 2.07 % AS98.05804Y 103 .12 % 2.18 % AS98.05805Z 101 .74 % 2.15 % AS98.05806A 100.19% 2.08% AS98.05807B 100 .72 % 2.14 % AS98.05916F 98.87 % 2.10% AS98.05917G 101 .36 % 2.13% AS98.05918H 102 .24 % 2.16 % ASRBK-00389809N * RBK 99 .36 % 2.11% AS

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



BNA08725933

HDMSE00587337

National Air and Radiation Environmental LaboratoryQC Batch Report--

QC Batch # : 0000967Q Analytical Procedure : TH

REAGENT BLANKS (PCI )

Sample ID Nuclide Activity t 2C

00389809N TH227 -8 .82e-03 ± 1 .le-0200389809N TH228 9 .90e-03 ± 1 .6e-0 200389809N TH230 3 .96e-03 ± 7 .2e-0 300389809N TH232 -1 .32e-03 ± 4 .9e-0 3

LABORATORY DUPLICATES ( PCI/GASH )

Sample ID Nuclide Original ± 2cv Duplicate ± 2a RPD Z

98 .05801V TH227 5 .16e-02 ± 8 .0e-02 -9 .24e-03 ± 4 .7e-02 287 .24 -1 .31 OK98 .05801V TH228 8 .04e-01 ± 1 .7e-01 1 .07e+00 ± 1 .9e-01 28 .67 1 .87 OK98 .05801V TH230 5 .38e-01 ± 1 .3e-01 5 .65e-01 ± 1 .3e-01 4 .83 0 .26 OK98 .05801V TH232 8 .43e-01 ± 1 .6 e-0 1 9 .52e-01 ± 1 .7e-01 12 .14 0 .81 OK

MATRIX SPIKES ( PCI/GASH)

Sample ID Nuclide Amt Added ± 2 0 Native ± 26 I Measured ± 26 %R Z

98 .05803X TH227 NO SPIKE DATA

98 .05803X (TH228 NO SPIKE DATA98 .05803X TH230 5 .86e+00 ± 4 .5% 4 .17e-01 ± l .le-01 6 .88e+00 ± 4 .9e-01 110 .46 1 .37 OK98 .05803X TH232 NO SPIKE DATA

MATRIX SPIKE DUPLICATES ( PCI/GASH )

Sample ID Nuclide Amt Added ± 2a Measured ± 20 RPD Z %RI Z

98 .05803X TH227 NO SPIKE DATA98 .05803X TH228 NO SPIKE DATA

98 .05803X TH230 5 .78e+00 ± 4 . 5% 7 .18e+00 ± 5 . 8e-01 5 .70 0 . 60 OK 116 .93 2 .03 OK98 .05803X TH232 NO SPIKE DATA

Analyst :



BNA08725934

HDMSE00587338

0 0 00 0 0

O 0 0

I

0 0 0 0 0 0Ln 0 0 Un C) L n0 o

0 0 0 0 0



666T/SZ/SO

666I/80/EO

6661/ZO/ZO

866T/LO/ZT

866T/40/TT

866T/4T/OT

866I/LT/80

866T/LZ/SO

866T/9T/EO

L66T/6Z/0T

L66T/SZ/60

L66T/IZ/LO

L66T/6T/SO

966T/60/ZT

966T/6I/TT

966I/ZT/60

966T/ZT/60

9661/91/80

966T/£0/90

966T/EO/9 0

BNA08725935

HDMSE00587339

666T/SZ/S0

6661/80/£0

666T/Z0/Z0

8661/L0/Z1

8661/40/TT

866T/4T/OT

866T/LT/80

8661/LZ/SO

866T/9T/EO

L66T/6Z/01

L661/SZ/60

L66T/TZ/L0

L66T/6T/S0

966I/60/ZI

9661/61/11

9661/Z1/60

9661/Z1/60

9661/91/80

9661/£0/90

966T/EO/90

0 00

0In

00

0In

0 0C) In

.-i 0 0 o . -4 .4

0 0 0 0



BNA08725936

HDMSE00587340

rO

0

Ln

0

0

0

0

0

666T/SZ/S0

6661/80/£0

6661/ZO/ZO

866E/LO/ZT

866T/DO/TT

8661/41/01

866T/LT/80

866I/LZ/90

866T/9E/EO

L661/6Z/01

L66I/SZ/60

L66T/IZ/LO

L66T/6T/S0

966T/60/ZT

966E/6E/EE

966E/ZE/60

9661/ZT/60

966E/9T/80

9661/£0/90

9661/£0/90

00

O

00

O



00

O

BNA08725937

HDMSE00587341

0 .20 0

0 .15 0

0,10 0

0 .05 0

0 .00 0

-0 .050

-0 .100

Reagent Blanks

Analyte: TH227

Procedure : TH

Analyst: Smith, Albert

-----------------I--- ------ --- --l-- - ------ ----I------------------

r . ..... . . .. . .. . .. . . . . .. . ... .. . ... . .. ....f......

--------- - ------

. ... . .rt.. . .4.....- . ... ....... . . . . . . . . . . . . . f . ......... . .. . . . . . . . . .. . . . .. .. . . . . .... .. . . .. ... . . ..........

.n .c .c .n .n .n r r r n m m ao co ao m m m mm m m m m 0\ m m m m m m m m m m m m m mm m m m m m m m m m m m m m m 0+ m m m m

O O b N N - 0 . ~ N 10 N a 0 r N 0 NO O -1 .+ N N O .~ N N N .-I N .i .i O O O O NCt

o .0 0 m 0 .-1 N 0 0 01 O 0 0 0 O .i N N 0 0O O O O O .1 N O O O .-. O O O .--I .-I .-~ O O O

-----------------F------ --------~ 0 . 0 7 5

. .... . . . . . . . . . . . . ........... .. . ....... . 0 .045

0 .000

~~0 574hA s~ UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

z~ OFFICE Or ND IND00RADIAT N A R AIIO R`tl~Irz ~I~ r National Air and Radiation Environmental Laborato ry

540 S th M i t AL 36A Mou orr s venue, gomery,on 115-2601r~< vao° (334) 270-3400

March 22, 199 9

MEMORANDUM

SUBJECT: Radiochernical Results forBell Canyon Samples

FROM: John Griggs, ChiefMonito ring and Analytical Services Branch

TO: Tom Kelly, Environmental EngineerRegion 9

Attached is a data package for strontium analysis of sediment samples collected from BellCanyon in Ventura County . The samples constitute NAREL batch number 9800074 . The resultsof further analyses 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 lessthan 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, Co-60, Cs-137, I-131, K-40,Ra-226, and Ra-228 . If one of these seven nuclides is undetected, NAREL reports it as "NotDetected," or "ND," and provides a sample-specific estimate of the MDC .

Internet Address (URL) • http ://www .epa .govRocyci.dtR .cyclabl. . Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 25% Postconsumer)



BNA08725939

HDMSE00587343

U.S. ENVIRONMENTAL PROTECTION AGENCY

NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORYSR ANALYSES


Project : BELL CANYONAnalysis Procedure : S tronti u mDate Reported : 03/16/1999

SAMPLES

Same'peClient Sample ID Type Matrix Co

Datellected

Dat eReceived

98 .05801V RH012 SAM SEDIMENT 06/11/1998 10/19/199 898 .05802W RH015 SAM SEDIMENT 06/11 /1998 10/19/199 898 .05803X RH021 SAM SEDIMENT 06/12/1998 10/19/199 898 .05804Y RH025 SAM SEDIMENT 06/12/1998 10/19/199 898 .05805Z RH041 SAM SEDIMENT 06/16/1998 10/19/199 898 .05806A RH046 SAM SEDIMENT 06/16/1998 10/19/199 898 .05807B RH047 SAM SEDIMENT 06/16/1998 10/19/199 898 .05916F RH003 SAM SEDIMENT 06/10/1998 10/28/199 898 .05917G RH004 SAM SEDIMENT 06/10/1998 10/28/199 898 .05918H RH005 SAM SEDIMENT 06/10/1998 10/28/199 8

EXCEPTIONS

1 . Packaging and Shipping - No problems were observed.2. Documentation - No problems were observed .3 . Sample Prepara tion - No problems were encountered .4 . Analysis - The 90Sr results of the o riginal analyses of NAREL samples 98 .5801 and 98 .5818 were significantly

less than zero . The analyses were repeated . The results of the reanalyses are repo rted in this data package .5 . Holding Times - All holding times were met.

QUALITY CONTRO L

1 . QC samples - All QC analysis results met NAREL acceptance criteria.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.



BNA08725940

HDMSE00587344

GENERAL INFORMATIO N

SAMPLE TYPES

BLD Blind sampleDBD Double blind sampleFBK Field blank

SAM Normal sample

ANALYSIS QC TYPES

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

MSD Matrix spike duplicateRBK Reagent blank

QUALITY INDICATOR S

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


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 .



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 MSIMSD 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 coun ting error. This addi tional term is not used in the evaluation of reagent bl anks .

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 .



SNA0872594 1

HDMSE00587345


SR ANALYSESSDG #9800074


Sample # : 98 .05801 V QC batch # : 0000694JMatrix : SEDIMENT Prep batch # : 0002174GSample type: SAM Prep procedure : N/AAmount analyzed: S .OSOe-01 GASH Analysis procedure : S RD ry/wet weight : 78.66 % Analyst : ADRAsh/dry weight :

Comment :

99.00 %

BELL CANYON

QC type: ANA


Date an d time I)uration (min) Detector ID Operator

02111/1999 14 :14 100 .0 T1AI KNG02/121199907 :35 100 .0 TIAI KNG02117/1999 07:38 100 .0 T1A1 KNG

ANALYTICAL RESULTS

Analyte Activity f 2a Uncertainty MDC Unit Date

Sr89 5.02e+00 2.3e+01 4.le+01 PCUGDRY 06/11/1998Sr90 1 .86e-01 8 .1e-01 1 . 4e+00 PCUGDRY 06 / 11/199 8



BNA08725942

HDMSE00587346


SR ANALYSESSDG #9800074


Sample # : 98 .05803X QC batch #: 0000694JMatrix : SEDIMENT Prep batch # : 00018983Sample type : SAM Prep procedure : N/AAmount analyzed : 5 .OlOe-01 GASH Analysis procedure : SRDry/wet weight: 81 .31 % Analyst : ADRAsh/dry weight: 99 .20 % QC type : ANA

Comment : BELL CANYON-BUFFER ZONE DRAINAGE


Date and time I)uration (min) Detector ID Operato r

11/24/1998 13 :36 100 .0 T 1 B 3 KNG11/25/1998 07 :18 100 .0 T1B3 KNG11/30/199809 :11 100 .0 T1B3 KNG

ANALYTICAL RESULTS

Analyte Activity t 2a Uncertainty MDC Unit Dat e

Sr89 3 .30e+0() 5 .7e+00 1 .Oe+01 PCUGDRY 06/12/199 8Sr90 -1 .56e-01 6 .1e-01 1 .2e+00 PCUGDRY 06/12/199 8



BNA08725943

HDMSE00587347


SR ANALYSES -SDG #980007 4


Sample #: 98 .05805Z QC batch # : 0000694JMatrix : SEDIMENT Prep batch #: 0001923RSample type : SAM Prep procedure : N/AAmount analyzed : 5.020e-01 GASH Analysis procedure : SRDry/wet weight : 93 .73 % Analyst: ADRAsh/dry weight: 94.60 % QC type : ANA




12/03/1998 13 :46 100 .0 Tl A 1 KNG12104/1998 12 :11 100 .0 T1 A 1 DPG12/09/199811 :51 100 .0 TIA1 KNG

ANALYTICAL RESULT S


Sr89 3 .81e+00 8 .8e+00 1 .6e+01 PCUGDRY 06/16/199 8Sr90 -3 .02e-01 8 .3e-01 1 .6e+00 PCUGDRY 06/16/1998



BNA08725944

HDMSE00587348


SR ANALYSE SSDG #980007 4


Sample # : 98.05805Z QC batch #: 0000694 JMatrix : SEDIMENT Prep batch #: 0001923 RSample type : SAM Prep procedure: N/AAmount analyzed: 4 .990e-Ol GASH Analysis procedure : SRDry/wet weight : 93 .73 % Analyst: ADRAsh/dry weight: 94.60% QC type: MSD




12103/1998 13 :46 100 .0 T1A4 KNG12/04/1998 12 :11 100 .0 T1A4 DPG12/09/1998 11 :51 100 .0 TI A4 KNG

ANALYTICAL RESULTS

Analyte Activity t 2a Uncertainty MDC Unit Date

Sr89 -2.85e+01 2.8e+01 4 .9e+01 PCUGDRY 06/16/199 8Sr90 4.34e+01 3.1e+00 1 .3e+00 PCUGDRY 06/16/1998



BNA0872594 5

HDMSE00587349

fi3 .S. ENVIRONMENTAL PROTECTION AGENCY

NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR YSR ANALYSESSDG #980007 4


Sample # : 98 .05807B QC batch #: 00006941Matrix : SEDIMENT Prep batch #: 0001923RSample type : SAM Prep procedure : N/AAmount analyzed : 5 .020e -01 GASH Analysis procedure : SRD ry/wet weight : 90.19% Analyst : ADRAsh/dry weight : 92.60 % QC type : ANA

Comment : BELL CANYON-BUFFER ZONE DRAINAGE


Date and time Duration (min) Detector ID Operato r

12103/1998 13 :46 100 .0 T I B 1 KNG12104/1998 12 :11 100 .0 T1B 1 DPG12/09/199811 :51 100 .0 Tl B 1 KNG

ANALYTICAL RESULTS

Analyte Activity t 2r Uncertainty MDC Unit Date

Sr89 7 . OOe+00 7 .3e+00 1 .3e+01 PCUGDRY 06/16/199 8Sr90 -5 .05e-0 1 6 .8e-01 1 . 4e+00 PCUGDRY 06/16/199 8



BNA0872594 6

HDMSE00587350

U.S . ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y

SR ANALYSES ~-SDG #980007 4


Sample #: 98.05916E QC batch # : 00006941Matrix : SEDIMENT Prep batch #: 0001912NSample type : SAM Prep procedure : N/AAmount analyzed: 5.030e-01 GASH Analysis procedure : SRDry/wet weight : 96.53 % Analyst : ADRAsh/dry weight :

Comment :

96.40 %

BELL CANYON

QC type : ANA


Date and time Duration ( min) Detector ID Operator

12/01/1998 14 :18 100.0 T2A2 KNG12/02/1998 07 :52 100 .0 T2A2 KNG12107/1998 08 :10 100 .0 T2A2 KNG

ANALYTICAL RESULTS


Sr89 1 .23e+00 7.6e+00 1 .4e+01 PCUGDRY 06/10/1998Sr90 2.71e-0l 7 .2e-01 1 .3e+00 PCUGDRY 06/10/1998



BNA08725947

HDMSE00587351

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

SR ANALYSESSDG #980007 4


Sample #: 98.0591 .8H QC batch # : 0000694 JMatrix : SEDIMENT Prep batch # : 0002174 GSample type : SAM Prep procedure : N/AAmount analyzed : 5.030e-01 GASH Analysis procedure : SRD ry/wet weight : 83.38 % Analyst: ADRAsh/dry weight :

Comment :

97.40 %

BELL CANYON

QC type : ANA


Date and time Duration ( min) Detector ID Operato r

02/11/1999 14 :14 100.0 TIA3 KNG02/12/1999 07 :35 100.0 T1A3 KNG02/17/1999 07 : 38 100 .0 T1A3 KNG

ANALYTICAL RESULTS

Analyte Ac ti vi ty t 2a Uncertainty MDC Unit Date

Sr89 -2 . 79e+00 2.Oe+01 3 . 7e+01 PCI/GDRY 06 /10/199 8Sr90 1 .35e-O1 7.Oe-01 1 . 3e+00 PCI/GDRY 06/10/199 8



BNA0872594 8

HDMSE00587352


SR ANALYSESSDG #980007 4

QC BATCH SUMMARY

QC batch # : 0000694JPreparation procedure: N/AAnalysis procedure : S R

NAREL Sample #QCType

Yield (%) t 2a Uncertain ty (%) Analyst

98.05801V 69.3 ADR98 .05802W 69 .1 ADR98.05803X 93.3 AD R98.05804Y 80 .1 ADR98.05805Z 613 .7 ADR98.05805Z MS 92.4 AD R9& .05805Z MSD 86.4 ADR98.05806A 79.2 AD R98 .05807B 77.9 AD R98 .05807B DUP 6 :1.3 ADR98 .05916F 84.3 ADR98 .05917G 80 .1 AD R98 .05918H 66.2 ADRRBK-00381820Y * RBK 67.1 AD R




BNA0872594 9

HDMSE00587353

00

Q

0 0

N

0

14



0

O

8661/t0/Z

866T/8T/1

8661/Lt/t

B66T/LT/I

8661/LT/t

866T/ZZ/0

8661/80/0

866t/VZ/6,

866T/9Z/8

966T/SZ/8'

B66T/Zt/8~

866T/PO/8i

8661/9t/Li

966T/8Z/Sr

8661/4IM

866t/fZ/4

966T /60/t ,

0 0 0

N

BNA08725950

HDMSE00587354

J, ~teo s7q~sUNITED STATES ENVIRONMENTAL PROTECTION AGENCY .

W OFFICE OF RADIATION AND INDOOR AI Rz National Air and Radiation Environmental Laboratory

;4 ~.o= 540 South Morris Avenue, Montgomery, AL 36115-2601rr~ ~~EC (334) 270-3400

May 19, 199 9

MEMORANDUM

SUBJECT: Radiochemical Results forBell Canyon Samples

FROM: John Griggs, Chief9t /'7t

Monitoring and An ytical Services Branch

TO : Tom Kelly, Environmental Engineer

Region 9

Attached are data packages for isotopic plutonium and uranium analyses of sedimentsamples collected from Bell Canyon in Ventura County . The samples constitute NAREL batchnumber 9800074 . The results of isotopic thorium analysis 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 lessthan 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, Co-60, Cs-137, I-131, K-40,Ra-226, and Ra-228 . If one of these seven nuclides is undetected, NAREL reports it as "NotDetected," or "ND," and provides a sample-specific estimate of the MDC .

Internet Address (URL) • http ://www.epa .go vRecycled/Recyclable • Printed with Vegetable Oil Based Inks on Recy cled Paper (Minimum 25% Posteonsumer)



BNA08725951

HDMSE00587355


PU ANALYSE S


Project: BELL CANYONAnalysis Procedure : PlutoniumDate Reported: 05/07/1999

SAMPLES

N~ # Client Sample ID Type Matri x CDate

ollectedDateReceived

98.05801V RH012 SAM SEDIMENT 06/11/1998 10/19/199 898 .05802W RH015 SAM SEDIMENT 06/11/1998 10/19/199898 .05803X R11021 SAM SEDIMENT 06112/1998 10/19/199 898.05804Y R11025 SAM SEDIMENT 06/12/1998 10/19/199 898 .05805Z RH041 SAM SEDIMENT 06/16/1998 10/191 199 898 .05806A RH046 SAM SEDIMENT 06/16/1998 10/19/199 898 .05807B RH047 SAM SEDIMENT 06116/1998 10/19/199 898 .05916F RH003 SAM SEDIMENT 061 10/1998 10/28/199 898 .05917G RH004 SAM SEDIMENT 06/10/1998 10/28/199 898 .05918H R11005 SAM SEDIMENT 06/10/1998 10/28/1998

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

acceptance criteria .



BNA08725952

HDMSE00587356

GENERAL INFORMATION

SAMPLE TYPES

BLD Blind sampleDBD Double blind sampleFBK Field blankSAM Normal sample

ANALYSIS QC TYPES

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

QUALITY INDICATOR S

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


A reagent blank result is considered unacceptable if it is more than 3 standard devia tions 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 posi tive number.



The Z score for a duplicate analysis is computed by dividing the difference between the two measured values by thecombined standard uncertain ty of the difference. When the precision of paired MS/MSD analyses is evaluated, thena ti ve sample activity is subtracted from each measured value and the net concentra tions 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 .



BNA08725953

HDMSE00587357


PU ANALYSESSDG #9800074


Sample # : 98 .05801 V QC batch #: 0000830YMatrix : SEDIMENT Prep batch #: 0002259LSample type : SAM Prep procedure : N/AAmount analyzed : 2.604e-0 1 GASH Analysis procedure : PUD ry/wet weight : 78.66% Analyst : ASAsh/dry weight:

Comment :

99.00 %

BELL CANYON

QC type : ANA



03/03/1999 15 :57 1000.0 AS01 DPG

ANALYTICAL RESULTS

Analyte Activi ty t 2a Uncertain ty MDC Unit Date

Pu238 2 . 77e-02 6.le-02 1 . le-0 1 PCUGDRY 03/03/1999Pu239 -3 .08e-03 2 . 2e-02 6 . 8e-02 PCUGDRY 03/03/1999



BNA08725954

HDMSE00587358

U .S. ENVIRONMENT AL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y



Sample # : 98.05802W QC batch # : 0000830YMatrix : SEDIMENT Prep batch #: 0002259LSample type : SAM Prep procedure : N/AAmount analyzed : 2.647e-0 :1 GASH Analysis procedure : PUDry/wet weight: 81 .78% Analyst : ASAsh/dry weight: 94 .80% QC type : ANA

Comment : BELL CANYON


Date an d time Duration (min) Detector ID Operator

03/03/1999 15 :57 1000.0 ASO3 DPG

ANALYTICAL RESULTS

Analyte Activity t 2a Uncertain ty MDC Unit Date

Pu238 -6 .50e-03 4.2e -0 2 9 . 7e-02 PCUGDRY 03/03/199 9Pu239 0.OOe+00 3 .2e-02 7 . 7e-02 PCUGDRY 03/03/199 9



BNA0872595 5

HDMSE00587359


PU ANALYSESSDG #980007 4


Sample # : 98.05803X QC batch #: 0000830YMatrix : SEDIMENT Prep batch #: 0002259LSample type : SAM Prep procedure : N/AAmount analyzed : 2.557e-01 GASH Analysis procedure : PUDry/wet weight : 81 .31 % Analyst : ASAsh/dry weight: 99.20 % QC type : MS

Comment: BELL CANYON-BUFFER ZONE DRAINAGE



03/03/1999 15 :57 1000.0 AS06 DPG

ANALYTICAL RESULTS

Analyte Activity t 2a Uncertain ty MDC Unit DatePu238 2 . 76e-02 5 .7e-02 1 .le-01 PCI/GDRY 03 /03/1999Pu239 7.22e+00 7 . 6e-01 4.8e-02 PCI/GDRY 03/03/199 9



BNA08725956

HDMSE00587360


NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR YPU ANALYSESSDG #9800074


Sample #: 98.05804Y QC batch # : 0000830YMatrix : SEDIMENT Prep batch #: 0002259LSample type : SAM Prep procedure : N/AAmount analyzed : 2 .684e-01 GASH Analysis procedure : P UD ry/wet weight : 87 .79% Analyst : ASAsh/dry weight:

Comment :

99.20 %


QC type : ANA



03/03/1999 15:57 1000.0 AS09 DPG

ANALYTICAL RESULTS

Analyte Activity t 2Q Uncertainty MDC Unit Dat e

Pu238 -5 .12e-D2 6.2e-02 1 .6e-01 PCUGDRY 03/03/1999Pu239 -7 .87e-03 1 .1e-02 7.2e-02 PCUGDRY 03/03/1999



BNA08725957

HDMSE00587361


PU ANALYSESSDG #980007 4


Sample #: 98 .05806A QC batch #: 0000830YMatrix : SEDIMENT Prep batch #; 0002259LSample type : SAM Prep procedure : N/AAmount analyzed : 2.529e-O1 GASH Analysis procedure : P UDry/wet weight : 84.31 % Analyst : ASAsh/dry weight : 93 .00% QC type : ANA

- Comment : BELL CANYON-SILTSTONE CHATSWORTH FM .



03/03/1999 15 :57 1000.0 AS 12 DPG

ANALYTICAL RESULTS

Analyte Activity f 2v Uncertain ty MDC Unit Date:1

Pu238 1 .04e-02 4 .3e-02 8.7e-02 PCUGDRY 03/03/1999Pu239 -1 .30e-02 1 .2c-02 6.2e-02 PCUGDRY 03/03/199 9



BNA08725958

HDMSE00587362

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



Sample #: 98 .05916F QC batch #: 0000830YMatrix : SFJ)M N T Prep batch #: 0002259LSample type : SAM Prep procedure: N/AAmount analyzed: 2.503e-01 GASH Analysis procedure : PUDry/wet weight: 96.53 % Analyst : ASAsh/dry weight:

Comment:

96 .40 %

BELL CANYON

QC type: ANA


Date and time Duration (min) Detector ID Operato r

03/03/1999 16 :00 1000 .0 AS34 DPG

ANALYTICAL RESULTS

Analyte Activi ty f 2o Uncertainty MDC Unit Date

Pu238 -2.42e-02 4.0e-02 1 .0e-01 PCI/GDRY 03/03/1999Pu239 0.00e+00 1 .7e-02 4.9e-02 PCI/GDRY 03/03/199 9

now-CONFIDENTIAL LEVEL I - UNDER PROTECTIVE ORDER ,


BNA0872595 9

HDMSE00587363




Sample #: 98.05918H QC batch #: 0000830YMatrix : SEDIMENT Prep batch # : 0002259LSample type : SAM Prep procedure : N/AAmount analyzed: 2.590e-01 GASH Analysis procedure: PUDry/wet weight : 83.38 % Analyst: ASAsh/dry weight:

Comment:

97.40 %

BELL CANYON

QC type : ANA



03/03/1999 16 :00 1000.0 AS37 DPG

ANALYTICAL RESULTS


Pu238 1 .31e-02 5.1e-02 9 .8e-02 PCI/GDRY 03/03/199 9Pu239 -2 .18e-03 4.4e-03 3 .4e-02 PCUGDRY 03/03/1999



BNA0872596 0

HDMSE00587364



QC BATCH SUMMARY

QC batch #: 0000830YPreparation procedure : NIA

Analysis procedure : PU

NAREL Sample #Type

'Yield (%) f 2a Uncertainty (%) Analyst

98.05801V 80.87% 6.40 % AS98.05801V DUP 68 .43 % 5 .69 % AS98.05802W 88.17% 6.72 % AS98.05803X 88.64% 6 .66% AS98.05803X MS 82.80% 6.44% AS98.05803X MSD 90.08% 6.07 % AS98.05804Y 76.81 % 6 .77 % AS98.05805Z 87.20 % 6.67 % AS98.05806A 91 .81 % 6.84 % AS98.05807B 85.12 % 5 .94 % AS98.05916F 79.00% 5 .64 % AS98.05917G 84.54% 5.80 % AS98.059181-1 83.39% 5.77% ASRBK-00386079P * RBK 83.91 % 5.82% AS




BNA0872596 1

HDMSE00587365

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O0



666T/ZO/E

- 8661/LI/ T

866T/TZ/0

866T/TZ/O

866T/TZ/O

8661/OZ/0

- 8661/OZ/0

8661/51/6

866T/Z1/6

8661ILT/9

8661/60/8

- 8661/40/9

866T/60/L

9661/60/L

866T/EZ/9

866T/EZ/9

8661/TT/S

8661/SO/S

8661/90/t

866T/9T/E

L661/SZ/6

L66'/SO/6

L66T/S1/L

L66T/ZT/Z

9661/TT/Z

966T/80/T

9661/01/0

966T/0T/0

966T/80/0

9661/OZ/B'

9661/91/9

- 9661/£0/9'

9661/TZ/£

9661/OZ/E

9661/LO/E

9661IIZ/Z

- 966T/60/ Z

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BNA08725962

HDMSE00587366

U.S . ENVIRONMENTAL PROTECTION AGENCYNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y

U ANALYSE S

REPOR7C OF SAMPLE DELIVERY GROUP # 9800074

Project: BELL CANYONAnalysis Procedure : Uraniu mDate Repo rted: 05/17/11999

SAMPLES

NARELSample #

Client Sample ID Type , MatrixDateCollected

Dat eReceived

98.05801V RH012 SAM SEDIMENT 06/11/1998 10/19/199898 .05802W RHO15 SAM SEDIMENT 06/11/1998 10/19/199898 .05803X RH021 SAM SEDIMENT 06/12/1998 10/19/199898 .05804Y RH025 SAM SEDIMENT 06/12/1998 10/19/199898 .05805Z RH041 SAM SEDIMENT 06/16/1998 10/19/199898 .05806A RH046 SAM SEDIMENT 06/16/1998 10/19/199 898 .05807B RH047 SAM SEDIMENT 06/16/1998 10/19/199898 .05916F RI-1003 SAM SEDIMENT 06/10/1998 10/28/199898 .05917G RH004 SAM SEDIMENT 06/10/1998 10/28/199 898 .05918H RI-1005 SAM SEDIMENT 06/10/1998 10/281199 8

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 the 78U matrix spike duplicate .The 234U and 235U results as well as all results of the matrix spike met NAREL acceptance criteria .

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 .



BNA08725963

HDMSE00587367

GENERAL INFORMATION

SAMPLE TYPE S

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 valu e

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 .


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 stand ard 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 .

NARELreports the "relative percent difference ," or RPD , between duplicate results and th e "percent recove ry," or %R,for spiked analyses , but does not use these values for evaluation .



BNA08725964

HDMSE00587368


NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORYU ANALYSESSDG #980007 4


Sample # : 98 .05801V QC batch # . 0000834CMatrix : SEDIMENT Prep batch # : 0002276MSample type : SAM Prep procedure : N/AAmount analyzed : 2 .493e-•01 GASH Analysis procedure : UDry/wet weight : 78.66 % Analyst : ASAsh/dry weight : o99 .00 % QC type : ANA

Comment : BELL CANYON


Date and tim e

03/10/1999 15 :06

Duration (min )

1000.0

Detector ID Operator

ASOI DPG

ANALYTICAL RESULTS


U234 4 .59e-01 1 .3e-01 6 .2e-02 PCIIGDRY 03/10/199 9U23 5 1 .01 a-02 3 .9e-02 8 .4e-02 PCI/GDRY 03/10/1999U23 8 3 .78e-0 I I .2e-0I 5 .7e-02 PCI/GDRY 03/10/199 9

Imp-CONFIDENTIAL LEVEL I - UNDER PROTECTIVE ORDER ,


BNA0872596 5

HDMSE00587369


U ANALYSESSDG #980007 4


Sample # : 98.05802W QC batch # : 0000834CMatrix : SEDIMENT Prep batch # : 0002276 MSample type : SAM Prep procedure : N/AAmount analyzed : 2 .543e-01 GASH Analysis procedure : UDry /wet weight : 81 .78 % Analyst : ASAsh/dry weight :

Comment :

94 .80 %

BELL CANYON

QC type : ANA


Date and tim e

03/10/1999 15 :06

Duration (min) Detector ID Operator

DPG1000.0 ASO3

ANALYTICAL RESULTS

Analyte Activity f 2a Uncertainty MDC Unit Dat e

U234 6.38e-01 1 .5e-01 6 .2e-02 PCUGDRY 03/10/199 9U235 8.OOe-02 5 .4e-02 2 .7e-02 PCUGDRY 03/10/1999U238 4.77e-01 I .2e-O1 4 .5e-02 PCI/GDRY 03/10/199 9



BNA08725966

HDMSE00587370




Sample # : 98 .05803X QC batch # : 0000834CMatrix : SEDIMENT Prep batch # : 0002276MSample type : SAM Prep procedure : N/AAmount analyzed : 2.595e-01 GASH Analysis procedure : UDry/wet weight : 81 .31 '% Analyst : ASAsh/dry weight : 99.20% QC type : M S



Date and time

03/10/1999 15:06

Duration (min)

1000 .0

DetectorID Operator

AS06 DPG

ANALYTICAL RESULT S


U234 4.75 e+00 5 .0e-0I 6.6e-02 PCUGDRY 03/10/1999U235 1 .77e-01 8 .4e-02 4 .9e-02 PCUGDRY 03/10/1999U238 4.55e+00 4.8e-01 5 .4e-02 PCI/GDRY 03/10/1999



BNA08725967

HDMSE00587371

U.S. ENVIRONMENTAL PROTECTION AGENCY .NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATOR Y

U ANALYSESSDG #9800074


Sample # : 98.05804Y QC batch # : 0000834CMatrix : SEDIMENT Prep batch # : 0002276M

Sample type: SAM Prep procedure : N/AAmount analyzed : 2 .500e-01 GASH Analysis procedure : UDry/wet weight : 87 .79 °/% Analyst : ASAsh/dry weight :

Comment :

99.200/6


QC type : ANA


Date and tim e

03/10/1999 15 :06

Duration (min) Detector ID Operator

DPG1000.0 AS09

ANALYTICAL RESULTS

Analyte Activity ± 2o Uncertainty MDC Unit Dat e

U234 6.90e-01 1 .8e-01 1 .1 a-01 PCI/GDRY 03/10/199 90235 2.45e-02 3 .5e-02 3 .7e-02 PCI/GDRY 03/10/1999U238 6 .92e-01 1 .8e-01 5 .3e-02 PCI/GDRY 03/10/1999



BNA08725968

HDMSE00587372


U ANALYSE SSDG #9800074


Sample # : 98.05806A QC batch #: 0000834CMatrix : SEDIMENT Prep batch # : 0002276MSample type : SAM Prep procedure: N/AAmount analyzed : 2.515e-01 GASH Analysis procedure : UDry/wet weight : 84 .31 % Analyst: ASAsh/dry weight : 93 .00% QC type : ANA

Comment : BELL CANYON-SILTSTONE CHATSWORTH FM .


Date and time

03/10/1999 15 :06

Duration (min )

1000 .0

Detector ID Operator

ASHl DPG

ANALYTICAL RESULTS

Analyte Activity t 20 Uncertainty MDC

U234 1 .13e--00 2 .0e-01 5.8e-0 2U235 1 .10e•-0I 6 .7e-02 4.9e-02U238 1 .06e--00 2 .0e-01 2.4e-0 2



Unit Date

PCI/GDRY 03/10/1999PCI/GDRY 03/10/1999PCI/GDRY 03/10/1999

BNA08725969

HDMSE00587373

U.S. EWIRONMENTAL PROTECTION AGENCY,NATIONAL AIR AND RADIATION ENVIRONM1NTAL LABORATORY

U ANALYSESSDG #9800074

Sample # : 98 .05916F QC batch # : 0000834CMatrix : SEDIMENT Prep batch # : 0002276MSample type : SAM Prep procedure : N/A

Amount analyzed : 2.585e-01 GASH Analysis procedure : UDry/wet weight : 96.53 % Analyst: ASAsh/dry weight :

Comment:

96 .40 %

BELL CANYON

QC type : ANA




03/10/1999 15 :08 1000.0 AS18 DPG

ANALYTICAL RESULT S

Analyte Activity ± 20 Uncertainty MDC Unit Dat e

U234 1 .29e+00 2 .1 a-01 5 .7e-02 PCI/GDRY 03/10/1999U235 1 .05e-01 5 .9e-02 2.4e-02 PCI/GDRY 03/10/199 9U238 1 .30e+00 2.0e-01 4 .1e-02 PCI/GDRY 03/10/1999



BNA08725970

HDMSE00587374

U.S . ENVIRONMENTAL PROTECTION AGENC YNATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY

U ANALYSE SSDG #980007 4


Sample # : 98.05918H QC batch # : 0000834CMatrix : SEDIMENT Prep batch # : 0002276MSample type : SAM Prep procedure : N/AAmount analyzed : 2.507e-01 GASH Analysis procedure : UDry/wet weight : 83.38 %, Analyst : ASAsh/dry weight :

Comment :

97.400/o

BELL CANYON

QC type : ANA


Date and tim e

03/10/1999 15 :0 8

Analyte

U234U235U238

Duration (min)

1000 . 0

Activity

5 .45e-018-23e-026.21 a-01

1 .3e-016.3e-02

1 .4e-0 1



Detector ID

AS2 1

ANALYTICAL RESULTS

± 2a Uncertain ty MDC

4.7e-027.7e-02

4.7e-02

Operator

DPG

Unit Date

PCIIGDRY 03/10/1999PCI/GDRY 03 /10/1999PCI/GDRY 03/10/199 9

BNA0872597 1

HDMSE00587375

U.S. ENVIRONMENTAL PROTECTION AGENCY,,NATIONAL AIR AND RADIATION ENVIRONMENTAL LABORATORY


QC BATCH SUMMARY

QC batch # : 0000834 CPreparation procedure : N/AAnalysis procedure : U

NAREL Sample # Q C e Yield (%) t 20 Uncertainty (%) Analyst

98 .05801V 92 . 85 % 6.18% AS98 .05801V DUP 94 .89 % 6 .15 % AS98 .05802W 98 .85 % 6.40% AS98 .05803X 94 .82 % 6.16 % AS98 .05803X MS 94 . 72 % 6.18 % AS98.05803X MSD 92 .69 % 5.77 % AS98.05804Y 95 .13% 6.74% AS98.05805Z 96 .40 % 6 .30 % A S98.05806A 90.76 % 5 .90 % AS98.05807B 97 .01 % 6.28 % A S98 .05916F 100.24% 6 .34 % A S98.05917G 95 .40 % 6 .21 % AS98.05918H 92 . 90 % 5.98 % ASRBK-00386643W * RBK 90.87 % 6 .05 % A S

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



BNA08725972

HDMSE00587376

0u-i0

0

0

0

000

0

666T/80/E

6661/TO/£

666T/ZO/Z

8661/LO/Z

- 8661/60/ 1

8661/EZ/0

9661/EZ/0

9661/EZ/0

8661/61/0

8661/LI/B

866I/LZ/S

8661/TT/S

866T/9T/E

L66t/OE/ Z

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L66T/tUL

L66T/TZ/S

466T/Wt

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0tn

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00 0 0 0 0



BNA08725973

HDMSE00587377

6661/BO/C

666I/TO/f

6661/ZO/Z

866T/LO/Z

866T/VO/1

866T/£Z/C

B66I/£Z/C

866T/£Z/C

8661/CL/C

B66I/LT/Y

866T/LZ/S

866T/TT/S

B66I/9T/£

L661/OE/Z

L66T/6Z/C

L66I/6Z/C

L66t/9Z/L

L661ITZIS

L66T/82/I

L66T/LZ/T

0 0 0 0 0 0 0LIl 0 Ln 0 vi o ui11 r1 0 0 o ,-1 r1

0 0 0 0 0 0



BNA08725974

HDMSE00587378



a

BNA08725975

HDMSE00587379

Documents

ED SZ* + = U · 2013-07-17 · 0 t ED SZ* + = U UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 9 75 Hawthorne Street San Francisco , CA 94105-3901 June 21, 199 9 REDACTED Bell