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Sequoia680 Chesapeakc Drive Redwood City CA 94063 (650) 364 9600 FAX(650)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(9t6) 921 0100 <br /> Blaine Tech Services, Inc Client Project fD Shell Tracy/970827-T2 <br /> #:1680 Rogers AveMatrix Liquid }; <br /> San Mose, CA 95112 <br /> Attention Fran Thle Work Order# 9708F55-01 Reported Sep 17, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> QC Batch# MSo908978260F3A MS0908978260F3A MS0908978260F3A MS09089782601`3A MS0908978260F3A <br /> Analy Method. EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Prep Method. N A. NA. N A. N A N ik <br /> Analyst: M Williams M Williams M Williams M Williams M Williams <br /> MS/MSD# 970902005 970902005 970902005 970902005 970902005 <br /> Sample Conc N D ND N D N D ND <br /> Prepared Date 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Analyzed Date 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Instrument I.D.# F3 F3 F3 F3 F3 <br /> Conc. Spiked 50 pg/L 50 pg/L 50 ug/L 50 jig/L 50 pg/L <br /> Result 48 46 48 47 46 <br /> MS % Recovery 96 92 96 94 92 <br /> Dup Result 48 47 48 45 46 <br /> MSD %Recov : 96 94 96 90 96 <br /> RPD 00 22 00 43 00 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS # V08090897 VDBO90897 VDBO90897 VDBO90897 VDB090897 <br /> Prepared Date 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Analyzed Date 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Instrument I.D.#. F3 F3 F3 F3 F3 <br /> Conc Spiked. 50Ng/L 50ug/L 50pg/L 50{ig/L 50yg/L <br /> LCS Result: 50 47 48 48 47 <br /> LCS % Recov.: 100 94 96 96 94 <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 />�SEZI A LYTICAL 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 /> Pe r **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Prnager 9708F55 BLA <5> <br /> ca <br />