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�. <br /> tD Sequoia 680 Chesapeake Drive Redwood CiM CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> hvJrj, vnµvO GhvL ` n~rv} v ! <br /> ,,,Blaine Tech Servlcesjn'c Client Project ID Chevron 9-2033/96051 5Al <br /> 985 Timothy Drive Matrix Liquid <br /> !,San Jose, CA 95133 <br /> i°Attention Jim Keller Work Order# 9605C37-01 Reported May 29, 1996! <br /> r +v31v + J9+ y vv+,, ,nm- n 4 r � n+, n ,nr r ` nr +• n r „ rn , nr t ry rvvn nnr • ` +. + ,J{,+' v , � <br /> QUALITY CONTROL DATA REPORT <br /> Analyte' Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC052196BTEXD2A GC052196BTEX02A GMU196BTEX02A G0052196BTEX02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prop. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst' J Woo J Woo J Woo J Woo <br /> MS/MSD#• gimme im 9605A6= 9605A6003 9605A6003 <br /> Sample Conc. N D N D N D N D <br /> Prepared Date 5/21/96 5/21/96 5/21/96 5/21/96 <br /> Analyzed Date 5/21/96 5/21/96 5/21/96 5/21/96 <br /> Instrument LD#' GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked. 10pg/L 10pg/L 10pg/L 30pg/L <br /> Result' 74 79 81 24 <br /> MS%Recovery 74 79 81 80 <br /> Dup Result 76 83 88 25 <br /> MSD%Recov.: 76 83 88 83 <br /> RPD. 27 49 83 41 <br /> RPD Limit: D-25 0-25 0-25 0-25 <br /> LCS#: BLK052196 BLK052196 BLKW2196 BLK052196 <br /> Prepared Date: 5/21/96 5/21/96 5/21/96 5/21/96 <br /> Analyzed Date: 5/21/96 5/21/96 5/21/96 5/21/96 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked. 10pg/L 10pg/L 10pg/L 30pg/L <br /> LCS Result- 7 6 82 85 26 - <br /> LCS%Recov. 76 82 85 87 <br /> 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <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 /> tEl 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 batcher <br /> Project Manager *"MS=Matrix Spike,MSD-MS Duplicate,RPD=Relative%Difference 96051037 BLA <2> <br />