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- , Sequoia 680 Chesapeake Drive Redwood City,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 /> IIS Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> G L 4 Ciient`Project 10 Chevron #9-4275 <br /> ,4211 May Ave Matrix Liquid <br /> Wichita, KS 67209 s <br /> Attention Justin Ward CC Sample Group 5120579-588 Reported Dec 20, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC121895 GC121895 GC121895 GC121895 <br /> 802009A 802009A 802009A 802009A <br /> Analy Method- EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. S Chullakorn S Chullakorn S Chullakorn S Chullakorn <br /> M S/MSD# 5120585 5120585 5120585 5120585 <br /> Sample Cone - N D N D N D N D <br /> Prepared Date 12/18/95 12/18/95 12/18/95 12/18/95 <br /> Analyzed Date: 12/18/95 12/18/95 12/18/95 12/18/95 <br /> Instrument LD# HP-9 HP-9 HP 9 HP-9 <br /> Cone Spiked- 20pg/L 20ug/L 20ug/L 60frg/L <br /> Result 19 20 20 69 <br /> MS %Recovery: 95 100 100 115 <br /> I <br /> Dup. Result. 19 21 21 72 <br />. MSD % Recov. 95 105 105 120 <br /> i <br /> RPD 00 49 49 43 <br /> RPD Limit- 0-20 0-20 0-20 0-20 <br /> LCS#. 4LCS121895 4LCS121895 4LCS121895 4LCS121895 <br /> Prepared Date: 12/18/95 12/18/95 12/18/95 12/18/95 <br /> Analyzed Date: 12/18/95 12/18/95 12/18/95 12/18/95 <br /> Instrument I D #. HP-9 HP-9 HP-9 HP-9 <br /> Cone. Spiked 20 pg/L 20 erg/L 20 ug/L 60 erg/L <br /> LCS Result: 20 22 22 75 <br /> LCS % Recov : 100 110 110 125 <br /> LCS 71-133 72-128 72-130 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 #1271 preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> [ALYTICAL, <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 /> Ke mer *"MS=Matrix pike,MSD=M Duplicate,RPD=Relative%Difference <br /> Proje anager <br /> 5120579 GTW <4> <br />