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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 /> �l Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 92.1 9600 FAX(916)921 0100
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<br /> Blaine Tech Services, Inc Client Prosect ID ^Chevron 9-8264/960524-J2 °#
<br /> ,,985 Timothy Drive Matrix Liquid
<br /> San Jose, CA 95133
<br /> tAttention Jim Keller Work Order# 9605163-01-03 Reported Jun 10, 1996<;
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<br /> QUALITY CONTROL DATA REPORT
<br /> Analyte. Benzene Toluene Ethyl Xylenes
<br /> Benzene
<br /> OC Batch#: GCOW196BTEX21A GCO53196BTEX21A GC053196BTEX21A GCO53196BTEX21A
<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 Woo J Woo J Woo J Woo
<br /> MS/MSD #: 9605E9403 9W5E9403 9605E9403 9605E9403
<br /> Sample Conc.* N D N D N D N D
<br /> Prepared Date 5/31/96 5/31/96 5/31/96 5/31/96
<br /> Analyzed Date: 5/31/96 5/31/96 5/31/96 5/31/96
<br /> Instrument I.D #' GCHP21 GCHP21 GCHP21 GCHP21
<br /> Conc. Spiked 10 ug/L 10 Ng/L 10 ug/L 30 pg/L
<br /> Result, 97 93 92 28
<br /> MS%Recovery 97 93 92 93
<br /> Dup Result: 10 95 87 26
<br /> MSD% Recov.: 100 95 87 87
<br /> RPD. 30 21 56 74
<br /> RPD Limit: 0-25 0-25 0-25 0-25
<br /> LCS# BLK053196 BLK053196 BLK053196 BLK053196
<br /> Prepared Date' 5/31/96 5/31/96 5/31/96 5/31/96
<br /> Analyzed Date. 5/31/96 5/31/96 5/31/96 5/31/96
<br /> Instrument I.D #: GCHP21 GCHP21 GCHP21 GCHP21
<br /> Conc.Spiked: 10Ng/L 10pg/L 10pg/L 30N9/1-
<br /> LCS Result: 11 11 11 33
<br /> LCS %Recov.• 110 110 110 110
<br /> MSIMSD 60.140 60-140 60.140 60.140
<br /> LCIS 70.130 70.130 70.130 70.130
<br /> Control Limits
<br /> Please Note
<br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents,
<br /> A ALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample
<br /> fortified with known uantities of specific compounds and subjected to the entire analytical procedure ff
<br /> t 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
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<br /> Pr BCt anager '"°MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9605163 BLA <3>
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