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Sequoia o30 C�csapeakc [7me tie�.occ G^� Ca 9.,'63 f41,11 30— 9670 FkX (415) 364 9233 <br /> -"V 1 404 " Wt3ct Lane \+alnuc Crcck CA 94593 (510) 933 9600 FkX(510) 938 9673 <br /> Analytical 9 Scnkcr Averu: Sul t 3 Sacramtnto CA 95334 (916, 921 9000 FAX(916) 921 0100 <br /> E A Engineering Science &Tech Client Project ID Exxon 7-3942/8373942 1307 <br /> 3458 Mt Diablo Blvd , Ste B-100 Matrix Liquid <br />' Lafayette CA 94549 r 9510F30 24-25 Reported orted Oct 30, 1995 <br /> Attention Tracy Faulkner Work Orde <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC102695BTEX07A GC102695BTF-X07A GC102695BTEX07A GC1026953TEX07A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst R Geckler R Geckler R Geckler R Geckler <br /> MS/MSD # 951OF4103 951OF4103 951OF4103 951OF4103 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 10/26/95 10/26/95 10/26/95 10/26/95 <br /> Analyzed Date 10/26/95 10/26/95 10/25/95 10/26/95 <br /> Instrument I D # GCHP7 GCHP7 GCHP7 GCHP7 <br /> Coni Spiked long/L 10ug/L 10ug/L 30ug/L <br /> Result 10 10 10 31 <br /> MS % Recovery 100 100 100 103 <br /> Dup Result 11 11 11 31 <br /> MSD % Recov 110 110 110 103 <br /> RPD 95 95 95 00 <br /> RPD Limit 0-50 0-50 0 50 0-50 <br /> ' v <br /> LCS # - <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Cone Spiked <br /> LCS Result <br /> ' LCS % Recov <br /> ' M M D <br /> LCS 71-133 72128 72130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS Is a control sample of known Interferent free matrix that is analyzed using the same reagents <br /> S ePenner <br /> ALYTICAL 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 rnatnx <br /> interference the LCS recovery Is to be used to validate the batch <br /> g <br /> Project Manager MS Matrix Spike, MSD MS Duplicate RPO Relative% Difference 9510F27 EEE �5> <br />