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a ' Sequoia 680 Chesapeake Drive Redwood Gry 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 /> X111 Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> x Parr is Environmental Group t Client Project ID 310-040 5A/2859, Stockton <br /> Y 2025 Gateway Place, Sude 440 <br /> Y San Jose, CA 95110 <br /> ,Attention Andrew Lehane Work Order# 9606268-02 Reported Jun 13, 1996- <br /> r v K f{N"+ nvmt tivnr rr. 4vi v.v m s n ryv vry ti I } • v v S r ' r s ` v ry J z M1 Jur v+v x n +.r n s 4 x iv x5vm�xv. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> CC Batch#- GCO60796BTEX17A GC060796BTEX17A GC06079613TEX17A GCO607963TEX17A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 FPA 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#- 96o518401 9605WQI 960518401 960518401 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 6/7/96 6/7/96 6/7/96 6/7/96 <br /> Analyzed Date 6/7/96 6/7/96 6/7/96 6/7/96 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc Spiked. 10 Ng/L 10 Ng/L 10 fig/L 30 ug/L <br /> Result 10 10 9 9 29 <br />. MS%Recovery 100 100 99 97 <br /> Dup. Result: 97 96 9 5 28 <br /> MSD %Recov.: 97 96 95 93 <br /> RPD- 30 41 41 35 <br /> RPD Limit 0.25 0.25 0-25 0-25 <br /> r}\v r 4i Y .h r. r r p ` t s vt♦ r. v h v v. rr }n <br /> LCS#: BLK060796A BLK060796A BLK060796A BLK060796A <br /> Prepared Date. 6/7/96 6/7/96 6/7/96 6/7/96 <br /> Analyzed Date- 6/7/96 6/7/96 6/7/96 6/7/96 <br /> Instrument I.D.#. GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone Spiked: 10pg/L 10pg/L 10pg/L 30Ng/L <br /> LCS Result: 97 96 95 28 <br /> LCS % Recov . 97 96 95 93 <br /> 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <br /> Control Limns <br /> Please Note <br /> The LCS is a control sample of known,tnterferent-free matrix that is analyzed using the same reagents, <br /> S)E=Q OiA ANALYTICAL 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 It <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery 1s to be used to validate the batch <br /> Claudia Hlrotsu <br /> Project Manager *=MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9606268 PPP <2> <br />