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/ \ Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX (415) 364.9233
<br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510) 988.9673
<br /> Analytical 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 921.9600 FAX (916)921.0100
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<br /> Blaine Tech Services, Inc. Client Project ID Chevron 9-0557, 950516-G2
<br /> h985 Timothy Drive Matrix: Liquid
<br /> >4
<br /> 5;�San Jose, CA 95133
<br /> ;Attention: Jim Keifer Work Order#: 9505C22 -01, 03-04 Reported: May 30, 1995:
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<br /> QUALITY CONTROL DATA REPORT
<br /> Analyte: Benzene Toluene Ethyl Xylenes
<br /> Benzene
<br /> OC Batch#: GCO52395BTEX02A GCO52395BTEX02A GC052395BTEX02A GC052395BTEX02A
<br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
<br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030
<br /> Analyst: J. Minkel J.Minkel J.Minkel J. Minkel
<br /> MS/MSD#: 950580401 950580401 950580401 950580401
<br /> Sample Cone.: N.D. N.D. N.D. N.D.
<br /> Prepared Date: 5/23/95 5/23/95 5/23/95 5/23/95
<br /> Analyzed Date: 5/23/95 5/23/95 5/23/95 5/23/95
<br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2
<br /> Cone. Spiked: 10 ug/L 10 pg/L 10 pg/L 30 pg/L
<br /> Result: 10 10 10 31
<br /> MS% Recovery: ioo 100 100 104
<br /> Dup. Result: 9.5 9.5 9.4 28
<br /> MSD% Recov.: 95 95 94 94
<br /> RPD: 5.1 5.1 6.2 10
<br /> RPD Limit: 0-50 0.50 0-50 0-50
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<br /> LCS#: - - - -
<br /> Prepared Date: - - - -
<br /> Analyzed Date: - - - -
<br /> Instrument I.D.#: - - - -
<br /> Cone. Spiked: - - - -
<br /> LCS Result: - - - -
<br /> LCS %Recov.: - - -
<br /> LCS 71-133 72-128 72-130 71-120
<br /> Control Limits
<br /> Please Note:
<br /> The LCS is a control sample of known,interfereni-free matrix that is analyzed using the same reagents,
<br /> 799
<br /> A ALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample
<br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If
<br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix
<br /> interference,the LCS recovery is to be used to validate the batch.
<br /> Penner
<br /> Project Manager MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9505C22,BLA 41>
<br />
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