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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988-9600 FAX(510)988 %73 <br /> X1117 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> r <br /> Blaine Tech Services, Inc client Project ID I Shell'Stockton f 971009-132 <br /> ar <br /> 1680 Rogers AveMatrix Liquid <br /> �-San Jose, CA 95112 ;h <br /> { Attention Fran Thle Work Order# 9710596-03-04 Reported Oct 17, 1997 ' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte' Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GC101497BTEX02A GC101497BTEX02A GC101497BTEX02A GC101497BTEX02A GC101497BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. A. Miraftab A Miraftab A Miraftab k Miraftab A.Miraftab <br /> MS/MSD #: 971069204 971069204 971069204 971069204 971069204 <br /> Sample Cone.: N D N D N D N D N D <br /> Prepared Date. 10/14/97 10/14/97 10/14/97 10/14/97 10/14/97 <br /> Analyzed Date 10/14/97 10/14/97 10/14/97 10/14/97 10/14/97 <br /> Instrument l D # GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked 10 ug/L 10 pg/L 1 a pg/L 30 pg/L 60 pg/L <br /> Result: 10 97 99 30 65 <br /> % Recovery: 100 97 99 100 108 <br /> Dup Result- 97 94 95 29 63 <br /> MSD % Recov 97 94 95 97 105 <br /> RPD 30 31 41 34 31 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS#. BLK101497 BLK101497 BLK101497 BLK101497 BLK101497 <br /> I <br /> Prepared Date 10/14/97 10/14/97 10/14/97 10/14/97 10/14/97 <br /> Analyzed Date 10/14/97 10/14/97 10/14/97 10/14/97 10/14/97 <br /> Instrument 1.1) #. GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked 10 pg/L 10 pg/L 10 pg/L 30 pg/L 60 pg/L <br /> LCS Result: 410 97 97 30 64 <br /> LCS % Recov : 100 97 97 100 107 <br /> MSINW 60-140 60.140 60-140 60-140 60-140 <br /> LCS 70-130 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 /> tProanager <br /> LYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with quantities of specific compounds and subjected to the entire analytical procedure H <br /> overy 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 /> "*MS=Matrix Spike, MSDMS Duplicate, RPD=Relative%Difference 9710596 BLA t3> <br />