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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(5 10)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 01 <br /> Blaine Tech Services, Inc Client Project ID Shell, Tracy/960824-J3 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Fran Thie Work Order# 9608D08-03-04 Reported Sep 4, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch# GCO82896BTEX03A GCO82896STEX03A GC082896BTEX03A GCO82896BTEX03A <br /> Analy Method EPA 80220 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst D Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD# 9608A7202 9608A7202 9608A7202 9608A7202 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Analyzed Date- 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked 10ug/L 10Ng/L 10ug/L 30ug/L <br /> Result 10 98 98 29 <br /> MS %Recovery 100 98 98 97 <br /> Dup. Result 10 99 98 29 <br /> MSD % Recov,. 100 99 98 97 <br /> RPD 00 10 00 00 <br /> RPD Limit 0-25 0-25 0.25 0-25 <br /> LCS # BLK082896 BLK082896 BLK082896 BLK082896 <br /> Prepared Date 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Analyzed Date 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Instrument I D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked- 10ug/L 10ug/L 10Ng/L 30ug/L <br /> LCS Result 95 94 92 27 <br /> LCS % Recov 96 94 92 90 <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 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 /> 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 /> 7 <br /> 1 interference,the LCS recovery is to be used to validate the batch <br /> eggy enne <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9608D08 BLA <2> <br />