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Sequoia 680 Chesapeake Drive Redwood G (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane Walnut Creekk CAA 945984598 (925)988-9600 FAX(925)988-9673 <br /> � <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)421-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blame Tech Services,'Inc Clierit Project ID Shell 2575 Country Club Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9807H87-04 Reported Aug 20, 1998 <br /> QUALITY_CO NTRO L-DATA-REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GC081498802005A G0081498802005A GC081498802005A GCO81498802005A GCO81498802005A <br /> Ana ly 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. K Nill K Nill K Nill K Nill K Will <br /> MS/MSD # 8080234 8080234 8080234 8080234 8080234 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 8/14/98 8/14/98 8/14/98 8/14/98 8/14/98 <br /> Analyzed Date 8/14/98 8/14/98 8/14/98 8/14/98 8/14/98 <br /> Instrument I D # HP5 HP5 HP5 HP5 HP5 <br /> Conc Spiked 20 Ng/L 20 ug/L 20 ug/L 60 ug/L 220 ug/L <br /> Result 20 20 19 60 220 <br /> MS % Recovery 100 100 95 100 100 <br /> Dup Result 18 18 18 57 240 <br /> MSD % Recov 90 90 90 95 109 <br /> RPD 105 105 54 51 87 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-50 <br />_�--�.-............ .ev { .vu.e»u Y.4..v n»> > mA.lJbw.4.JY.L6f{iv^C{PfA'+'+'V�+'J�^"^^y^"'A"'"r}wy ....w. ry ..- .....w.vr.... vv -.. >vxTr.>�vti�hh l Y-0OPSrC]Z{}lN.r n , s r v•.v.» a.•m. y � .++w <br /> LCS # LC8081498 LCS081498 LCS081498 LCS081498 LCS081498 <br /> Prepared Date 8/14/98 8/14/98 8/14/98 8/14/98 8/14/98 <br /> Analyzed Date 8/14/98 8/14/98 8/14/98 8/14/98 8/14/98 <br /> Instrument 11) # HP5 HP5 HP5 HP5 HP5 <br /> Conc Spiked 20 Ng/L 20 Ng/L 20 ug/L 60 ug/L 220,ug/L <br /> LCS Result 18 19 19 59 240 <br /> LCS % Recov 90 95 95 98 109 <br /> 80-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 60-140 <br /> Control Limits <br /> Please Note <br /> SEQ N LYTICAL The LCS is a control sample of known,Interferent-free matrix that is analyzed using the same reagents, <br /> EI 7 preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> fo 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 tall within specified control limits due to matrix <br /> Interference,the LCS recovery is to be used to validate the batch <br /> Peg Pe ner <br /> Proje nager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 98071-18731-A <16s <br />