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Sequoia680 Chesapeake Drive Redwood Cim CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510) 988 9673 <br /> IwoAnalytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Shell Stockton / 970905-F1 n <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> u Attention Fran Thie Work Order# 9709144 -01, 03 Reported Sep 10, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch#. GCO90597BTEX21A GC090597BTEX2IA GC090597BTEX21A GCO90597BTEX21A GCO90597STEX21A <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. D Jima D Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD# 9708D3202 9708D3202 9708D3202 970SD3202 970SD3202 <br /> Sample Cone. N D N D N D N D N D <br /> Prepared Date 9/5/97 9/5/97 9/5/97 9/5/97 9/5/97 <br /> Analyzed Date 9/5/97 9/5/97 9/5/97 9/5/97 9/5/97 <br /> Instrument 1 D #- GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Cone Spiked: 10ug/L 10pg/L 10pg/L 30pg/L 60pg/L <br /> Result 10 99 98 29 52 <br /> MS % Recovery 100 99 98 97 87 <br /> Dup Result. 10 99 9 7 29 52 <br /> MSD % Recov.: 100 99 97 97 87 <br /> RPD: 00 00 10 00 00 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK090597 BLK090597 BLK090597 BLK090597 BLK090597 <br /> Prepared Date: 9/5/97 9/5/97 9/5/97 9/5/97 9/5/97 <br /> Analyzed Date 9/5/97 9/5/97 9/5/97 9/5/97 9/5/97 <br /> Instrument I D # GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Cone Spiked 10Ng/L 10ftg/L 10pig/L 30ug/L 60,ug/L <br /> LCS Result: 10 10 10 30 54 <br /> LCS % Recov.: 100 100 100 100 90 <br /> 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 fres matrix that is analyzed using the same reagents, <br /> Jgyenner 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 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 /> Pronager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9709144 8L <1> <br />