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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 4a) 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0180 <br /> m + + + ra x + yr + r > <br /> fiHvn <br /> Blaine Tech Services, Inc r AClient Project ID Shell/Stockton/960327-Z2 ,, '1r <br /> 985 Timothy Drive Matrix Ugtlid <br /> ;'San Jose, CA 95133 <br /> =hAttentlon Jim Keller Work Order# 9603J55 -01-09 x Reported _Apr 10, 1996 t <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCo40396BTDC20A GCO40396BTEX20A GC040MBTEX20A GCD40396BTEX20A <br /> Analy Method: EPA 802D 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 #• 9603F5602 9603F5602 9603F5W2 96WF5602 <br /> Sample Conc : N D N D N D N D <br /> Prepared Date: 4/3/96 4/3/96 4/3/96 4/3/96 <br /> Analyzed Date: 4/3/96 4/3/96 4/3/96 4/3/96 <br /> Instrument I.D.#" GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked: 10 fig/L 10 pg/L 10 pg/L 30 pg/L <br /> Result 9 8 9 7 9 6 28 <br /> MS%Recovery: 98 97 96 93 <br /> Dup. Result: 11 11 10 31 <br /> MSD % Recov.: 110 110 100 103 <br /> RPD: 12 13 41 10 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> }~ •4 t YOrry`+ t • t~Y • ~ •• ` v A ` v rr r o +.rr+ r yr >♦ • r <br /> > Y v r}r + v r yr r rrrrr[+ + }+ <br /> LCS #: BLK040396 BLK040396 BLK040396 BLK0403N <br /> Prepared Date: 4/3/96 4/3/96 4/3/96 4/3/96 <br /> Analyzed Date: 4/3/96 4/3/96 4/3/96 4/3/96 <br /> Instrument I.D.#. GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked: 10Ftg/L 10pg/L 1opg/L 30Ng/L <br /> LCS Result- 9 6 10 98 29 <br /> LCS % Recov.: 96 100 98 97 <br /> MS/MSD <br /> LCS 71-130 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 />"E UOIA NALYTICAL 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 /> e g 4 enner <br /> rolect Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9603J55 BLA <I> <br />