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j 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 /> qwr Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> B6ne Tech Services, Inc y Client Project ID' Chevron 9-8264 f 97010722 ` <br /> ,'l 680 Rogers Avenue Matra Liquid <br /> f <br /> -San Jose, CA 95112 h{ <br /> 'Attention Fran Thle Work Order# 9701261-01 Reported Jan 16, 1997 , <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloro- Tnchloro- Chloro- <br /> ethene ethane Benzene <br /> OC Batch#- GCO10897801009A GCO10897801009A GCO10897801009A <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# 970121101 970121101 970121101 <br /> Sample Cone : N D N D N D <br /> Prepared Date 1/8/97 1/8/97 1/8/97 <br /> Analyzed Date 1/8/97 1/8/97 1/8/97 <br /> Instrument I D #: GCHP9 GCHP9 GCHP9 <br /> Cone Spiked 25pg/L 25,ug/L 2599/1- <br /> Result <br /> 599/1Result 29 28 26 <br /> MS %Recovery 116 112 104 <br /> Dup Result 23 25 23 <br /> MSD % Recov 92 100 92 <br /> RPD 23 11 12 <br /> RPD Limit. 0-25 0-25 0-25 <br /> LCS #: BLK010997 BLK010997 BLK010997 <br /> Prepared Date 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date 1/9/97 1/9/97 1/9/97 <br /> Instrument I D #. GCHP9 GCHP9 GCHP9 <br /> Cone. Spiked- 25jig/L 25pg/L 25pg/L <br /> LCS Result- 24 26 26 <br /> LCS % Recov.. 96 104 104 - <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 /> teyIA A 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 matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> enner **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference <br /> Manager 9701261 BLA <7> <br />