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fl P <br /> 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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8632 /961105-C2 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9611260-01 Reported Nov 23, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloro- Trichloro- Chloro- <br /> ethene ethene Benzene <br /> OC Batch# GC11089CM10008A GC1108968010008A G101108968010008A <br /> Analy Method EPA 8010 EPA 8010 EPA 8010 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 <br /> Analyst B Ali B Ali B Ali <br /> MS/MSD# 961124902 961124902 961124902 <br /> Sample Cone N D N D N D <br /> Prepared Date 11/8/96 11/8/96 11/8/96 <br /> Analyzed Date 11/8/96 11/8/96 11/8/96 <br /> Instrument 1 D # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked 25 pg/L. 25 Ng/L 25 Mg/L. <br /> Result 34 29 25 <br /> MS % Recovery 136 116 100 <br /> Dup Result 37 30 25 <br /> MSD% Recov 148 120 100 <br /> RPD 85 34 00 <br /> RPD Limit 0-25 0-25 0-25 <br /> LCS# BLK111296 BLK111296 BLK111296 <br /> Prepared Date 11/12/96 11/12/96 11/12/96 <br /> Analyzed Date 11/12/96 11/12/96 11/12/96 <br /> Instrument I D # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked 25ug/L 25,vg/L 25 pg/L <br /> LCS Result 25 25 24 <br /> LCS %Recov• 100 100 96 <br /> 60-140 60-140 60-140 <br /> LCS 65-135 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 /> SEQUOIA ANALYTICAL 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 It <br /> the recovery of analytes from the matrix spike does not fail within specified control limits due to matrix <br /> interference,the LCS recovery Is to be used to validate the batch <br /> Peggy Penner **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> Project Manager 9611260 BLA �9> <br />