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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 /> • ��l Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Shell, Stockton, 960730-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9608098 -06 Reported Aug 22, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> QC Batch# MS0815968260 MS0815968260 MS0815968260 MS0815968260 MS0815968260 <br /> Analy Method EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Prep Method EPA 8260 EPA 8250 EPA 8260 EPA 8260 EPA 8260 <br /> Analyst- L Zhu L Zhu L Zhu L Zhu L Zhu <br /> MS/MSD # 9608098-05 9608098-06 9608098-06 9608098-06 9608098-06 <br /> Sample Cone N D N D 22 23 N D <br /> Prepared Date 8/15/96 8/15/96 8/15/96 8/15/96 8/15/96 <br /> Analyzed Date 8/15/96 8/15/96 8/15/96 8/15/96 8/15/96 <br /> Instrument LD # MSH6 MSH6 MSH6 MSH6 MSH6 <br /> Cone Spiked 50 ug/L 50 ug/L 50 ug/L 50 ug/L 50 ug/L <br /> Result 46 46 50 49 47 <br /> MS % Recovery 92 92 96 93 94 <br /> Dup Result 47 47 50 49 48 <br /> 11h$D % Recov 94 94 96 93 96 <br /> RPD- 22 22 00 00 21 <br /> RPD Limit- 0-25 0-25 0-25 0-25 0-25 <br /> LCS # VB0815961VIS VE081596MS V8081596MS VS081596MS VB081596MS <br /> Prepared Date 8/15/96 8/15/96 8/15/96 8/15/96 8/15/96 <br /> Analyzed Date 8/15/96 8/15/96 8/15/96 8/15/96 8/15/96 <br /> Instrument I D # MSH6 MSH6 MSH6 MSH6 MSH6 <br /> Cone Spiked. 50 ug/L 50 ug/L 50 ug/L 50 ug/L 50 ug/L <br /> LCS Result 45 47 49 47 48 <br /> LCS % Recov. 90 94 50 94 96 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 65-135 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 /> O 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 If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> rference,the LCS recovery is to be used to validate the batch <br /> P g P *" M"atrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> rolect Manager 9608098 BLA -<6> <br />