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• y / \ 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,Suote 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ' '}vv}»v i+}\ MS v`pryCn rv+ry Cv ux.v L Snp v 4 {.n wv 4 n v •' 4x.v V r n rn yr v v. v x 4 <br /> } Blaine Tech Services, Inc Client Project ID Chevron 9-8632/951201-G2 =z <br /> `x985 Timothy Drive Matrlx Liquid <br /> "San Jose, CA 95133 { <br /> =Attention Jim Keller Work Order# 9512138-01-04 Reported Dec 18, 1995," <br /> ` 4{`. . v ' ` r ` +.,.,.: 4 +t .v rnw •• ^ r v rrrrr � r ^ • ar' r r n. n r v.~iX vrr>c r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC120695BTEX03A GC120695BT©CO3A OC120695BTDWA GC120695BTEX03A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prop Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J Woo J Woo J Woo J Woo <br /> MS/MSD #: 951111701 951111701 951111701 951111701 <br /> Sample Conc - N D N D N D N D <br /> Prepared Date: 12/6/95 12/6/95 12/15/95 12/6/95 <br /> Analyzed Date: 12/6/95 12/6/95 12/6/95 12/6/95 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc.Spiked: 10pg/L 10ug/L 1opg/L 30Ng/L <br /> Result: 99 97 96 29 <br /> MS %Recovery: 99 97 96 97 <br /> Dup. Result: 96 9 6 94 28 <br /> MSD %Recov : 96 96 94 93 <br /> RPD: 31 10 21 35 <br /> RPD Limit- 0-50 0-50 0-50 0-50 <br /> LCS# BLK120695 BLK120695 BLK120695 BLK120695 <br /> Prepared Date 12/6/95 12/6/95 12/6/95 12/6/95 <br /> Analyzed Date, 12/6/95 12/6/95 12/6/95 12/6/95 <br /> Instrument I D.#. GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked 10ug/L 10pg/L 1opg/L 30ltg/L <br /> LCS Result 99 98 97 29 <br /> LCS%Recov .. 99 98 97 97 <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,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIAALYTICAL 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 /> Proyject <br /> r <br /> Manager *•MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9512138 BLA <2> <br />