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680 ake Drive Redwood City CA 94063�50)364-9600 FAX(650)364-9Z33 <br /> j Sequoia 404 N r et Eane Walnut Creek.CA 94598 (925)988-9600 FAX(915)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Ana <br /> lytiCal 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shell 341 East Main St <br /> 1680 Rogers Ave Matrix Liquid <br /> San.Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9811698 -01 Reported Dec 7, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# 8110245 8110245 8110245 8110245 <br /> Analy Method ERA 8015M/8020M EPA 8015M/8020M EPA 8015M/8020M EPA 8015M/8020M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst - - - - <br /> MS/MSD # P811138-01 P811138-01 P811138-01 P811138-OI <br /> Sample Conic N D N D N D N D <br /> Prepared Date 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Analyzed Date 11/16/98 11/16/98 11/16/98- 11/16/98 <br /> Instrument 1.0 # - - - <br /> Conc.Spiked 100 ug/L 100 Pg/L 100lig/L 300 jug/L <br /> Result 981 96 969 298 <br /> MS % Recovery 981 96 969 993 <br /> Dup Result 95 927 938 289 <br /> MSD %Recov 95 927 93 8 963 01 <br /> RPD 321 35 325 307 <br /> RPD-Limit 0-5 0-6 0-4 0-5 <br /> LCS # LCS 111698 LCS111698 LCS111698 LC8111698 <br /> Prepared Date 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Analyzed Date 11/16/98 11/16/98 11/16/98 11/16/98 <br /> Instrument I D # - - - - <br /> Conc Spiked 100}rg/L 100 jig/L 100 ug/L 300 lrg/L <br /> LCS Result 104 101 100 307 <br /> LCS. %Recov 104 101 - 100 102 <br /> 82-119 80-117 66-125 73-119 <br /> LCS 84-116 81-117 79-115 80-114 <br /> Control nits <br /> Please Note <br /> SEQ OIA i NALYTICAL _ ��_ --_The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> E 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 fail within specified control limits due to matrix <br /> Interference,the LCS recovery is to be used to validate the batch <br /> eg Penner <br /> Project Manager **MS=Matrix Spike, MSR=MS Duplicate,RPD=Relative% Difference 9811698 BLA <1> <br />