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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9,ZI-0100. <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project lD ' Shell 620 W Charter Way <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9808909 02, 04 Reported Sep 8, 1998 <br /> OUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes BTEX as TPH <br /> Benzene <br /> OC Batch# GC082898802005A GCO82898802005A GCO82898802005A GCO82898802005A GC082898802005A <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 Newcomb D Newcomb D Newcomb D Newcomb D Newcomb <br /> MS/MSD # 8081629 8081629 8081629 8081629 8081629 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 8/28/98 8/28/98 8/28/98 8/28/98 8/28/98 <br /> Analyzed Date 8/28/98 8/28/98 8/28/98 8/28/98 8/28/98 <br /> Instrument I D # HP5 HP5 HP5 HP5 HP5 <br /> Cone Spiked 20ltg/L 20 pg/L 20 ug/L 60 jig/L 230 Mg/L <br /> Result 18 18 18 57 250 <br /> MS % Recovery 90 90 90 95 109 <br /> Dup Result 18 18 18 57 240 <br /> MSD % Recov 90 90 90 95 104 <br /> RPD 00 00 00 00 41 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-50 <br /> ^yvro.vtr x�cays xn ry vat mrro cavo xovca,eo-cv+max vn.xa+~fammv,.vxv, av+ v.rxx^ . .� ,., Y .. .. A ...:....,.,,..-.. A ....,......, ,. ,...,.,..x .w, e h ,,,,,..,. ,.h.....................,.,..,....:. a,.,-}.x•� <br /> LCS # LCS082898 LCS082896 LCS082898 LCS082868 LCS082898 <br /> Prepared Date 8/28/98 8/28/98 8/28/98 8/28/98 8/28/98 <br /> Analyzed Date 8/28/98 8/28/98 8/28/98 8/28/98 8/28/98 <br /> Instrument I D # HP5 HP5 HP5 HP5 HP5 <br /> Cone Spiked 20ug/L 20ug/L 20ug/L 60pg/L 230 ug/L <br /> LCS Result 16 17 17 53 230 <br /> LCS % Recov 80 85 85 88 100 <br /> LCS 70-130 70-130 70-130 70-130 60-140 <br /> Control Limits <br /> Please Nate <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SE UOI ALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> E # 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 /> Pe gy P ner <br /> Prod Ct onager **MS=Matrix Spike, MSD=MS Duplicate, RPD Relative% Difference 9808909 BLA <2> <br />