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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 0 6) 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 /> Blaine Tech Services Inc Client Project ID Shell, Stockton <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9609337-01 Reported Sep 18, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: 1,1-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> QC Batch# MS0910968260F3A MS0910968260F3A MS0910968260F3A MS0910968260F3A MS0910968260F3A <br /> Analy Method EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Prop Method. N/A N/A N/A N/A N/A <br /> Analyst L Zhu L.Zhu L Zhu L Zhu L Zhu <br /> MS/MSD# 960BJ5301 960BJ5301 9608,15301 960SJ5301 9608J5301 <br /> Sample Conc N D N D N D 16 N D <br /> Prepared Date - - - - <br /> Analyzed Date. 9/10/96 9/10/96 9/10/96 9/10/96 9/10/96 <br /> Instrument I D # F3 F3 F3 F3 F3 <br /> Conc Spiked. 310pg/L 310pg/L 310jug/L 310Yg/L 310 pg/L <br /> Result: 290 300 320 330 310 <br /> MS % Recovery 94 97 103 101 100 <br /> Dup Result 300 300 310 320 310 <br /> MSD % Recov • 97 97 100 98 100 <br /> RPD 34 00 32 31 00 <br /> RPD Limit 0-25 0-25 0.25 0-25 0-25 <br /> LCS#. VDB091196 VDB091196 VDBO91196 VDB091196 VDB091196 <br /> Prepared Date 9/11/96 9/11/96 9/11/96 9/11/96 9/11/96 <br /> Analyzed Date 9/11/96 9/11/96 9/11/96 9/11/96 9/11/96 <br /> Instrument I D # F3 F3 F3 F3 F3 <br /> Conc Spiked 50 ug/L 50 yg/L 50 ug/L 50 ug/L 50 pg/L <br /> LCS Result- 51 52 51 53 52 <br /> LCS %Recov - 102 104 102 106 104 <br /> MS/MSD 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 /> IA 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 1s to be used to validate the batch <br /> Pegg ginner **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference <br /> Projec Manager 9609337 BLA <2> <br />