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Sequoia680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 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)921-0100 <br /> 11W Analytical t455 McDowell Blvd North,Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <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# 9811692 -01-03 Reported Dec 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# 8110237 8110237 8110237 8110237 <br /> Analy Method EPA 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 # P811144-04 P811144-04 P811144-04 P811144-04 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 11/14/98 11/14/98 11/14/98 11/14/98 <br /> Analyzed Date 11/14/98 11/14/98 11/14/98 11/14/98 <br /> Instrument I D # - - - - <br /> Cone Spiked 100 pg/L 100 erg/L 100 Ng/L 300,ug/L <br /> Result 967 951 938 285 <br /> MS % Recovery 967 951 938 95 <br /> Dup Result 988 973 959 291 <br /> MSD % Recov 988 973 959 97 i <br /> RPD 215 229 221 208 <br /> RPD-Limit 0-5 0-6 0--4 0-5 <br /> --- - LCS # LCS111498 - LCS111498- - LCS111498 - - LCS111498 <br /> Prepared Date 11/14/98 11/14/98 11/14/98 11/14/98 <br /> Analyzed Date 11/14/98 11/14/98 11/14/98 11/14/98 <br /> Instrument I D # - - - - <br /> Conc Spiked 100pg/L 1001tg/L 100 jig/L 300 jug/L <br /> LCS Result 963 951 939 286 <br /> LCS % Recov 963 951 939 953 <br /> I <br /> 82-119 80-117 66-125 73-119 <br /> LCS 84-116 81-117 79-115 80-114 <br /> Control Limits <br /> Please Note <br /> a2,24 <br /> ALYTICAL 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 tc be used to validate the batch <br /> ner <br /> nager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9811692 BLA <1> <br /> 9D <br />