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G) Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lanc Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services,Inc Client Project ID Chevron 9-2033, 950815-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 95081393-01-03 Reported Aug 25, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. 1,1-Dichloro- Triohloro- Ghloro- <br /> ethene ethene benzene <br /> OC Batch#' GCO82095801024A GC082095801024A GC082095801024A <br /> Analy. Method EPA601/8010 EPA601/8010 EPA601/8010 <br /> Pree Method. EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: D Nelson D Nelson D Nelson <br /> MS/MSD#: 950801602 950801602 950801602 <br /> Sample Conc : N D 19 N D <br /> Prepared Date 8/20/95 8/20/95 8/20/95 <br /> Analyzed Date. 8/20/95 8/20/95 8/20/95 <br /> Instrument I D # GCHP24 GCHP24 GCHP24 <br /> Conc. Spiked: 25pg/L 25yg/L 25pg/L <br /> Result. 23 31 24 <br /> �MS %Recovery- 92 48 96 <br /> Dup Result: 23 32 25 <br /> MSD % Recov - 92 52 100 <br /> RPD 00 32 41 <br /> RPD Limit- 0-50 0-50 0-50 <br /> LCS # BLK082095 BLK082095 BLK082095 <br /> Prepared Date 8/20/95 8/20/95 8/20/95 <br /> Analyzed Date. 8/20/95 8/20/95 8/20/95 <br /> Instrument I D # GCHP24 GCHP24 GCHP24 <br /> Conc Spiked- 25Ng/L 25pg/L 25}rg/L <br /> LCS Result. 22 18 24 <br /> LCS%Recov .. 88 72 96 <br /> MS/MSD <br /> LCS 28.167 35-146 38-150 <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 /> nALYTICAL 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 <br /> Project Manage 9508693 BLA <6> <br />