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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 (9Z5)988-9600 FAX(92 5)986-9673 <br /> �rlll� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Texaco 440 W Charter Way <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Deidre Kerwin Work Order # 9808753-10 Reported Aug 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> CSC Batch# 8080323 8080323 8080323 8080323 <br /> Analy Method EPA$020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 8015M EPA 8015M EPA 8015M EPA 8015M <br /> Analyst S Forbes S Forbes S Forbes S Forbes <br /> MS/MSD # <br /> Sample Cone <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Cone Spiked <br /> Result <br /> MS % Recovery <br /> Dup Result <br /> MSD % Recov <br /> RPD <br /> RPD Limit <br /> r <br /> LCS # LCS082498 LCS082498 LCS082498 LCS082498 <br /> Prepared Date 8/24/98 8/24/98 8/24/98 8/24/98 <br /> Analyzed Date 8/24/98 8/24/98 8/24/98 8/24/98 <br /> Instrument 1 D # - - - - <br /> Conc Spiked 100ug/L 100,ug/L 100ug/L 300 ug/L <br /> LCS Result 992 943 928 282 <br /> LCS % Recov 992 943 928 94 <br /> 82-119 80-114 66-125 73119 <br /> LCS 84-116 81-117 79-115 80-114 <br /> Control Limits <br /> Please Note <br /> eSE--,(G1UATICAL The LCS is a control sample of known interferent-free matrix that is analyzed using the same reagents <br /> 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 /> **MS=Matrix Spike MSD=MS Duplicate RPD=Relative%Difference 9808753 BLA <2> <br /> rV% <br />