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14� \ 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 /> llaine Tech Services Inc Client Project ID Snell, Stockton, 960730-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order # 9608098 -07 Reported Aug 22, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> GC Batch#- GCO813968TEX17A GCO81396BTEX17A GCO813968TEX17A GCO81396BTEX17A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst R Burton R Burton R Burton R Burton <br /> MS/MSD# G9608167-05 (39608167-05 G9608187-05 G9608167-05 <br /> Sample Cone . N D N D N D N D <br /> Prepared Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Analyzed Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Instrument I D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result- 99 97 98 29 <br /> MS % Recovery 99 97 98 97 <br /> Dup Result 98 98 98 29 <br /> 1b MSD % R@COV 98 98 98 97 <br /> RPD 10 10 00 00 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS # GBLK081396 GBLK081396 GBLKOB1396 GBLK081396 <br /> Prepared Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Analyzed Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Instrument LD # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone. Spiked. 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Result: 87 97 96 25 <br /> LCS % Recov. 87 97 96 83 <br /> 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <br /> Control Lirrits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> S 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 /> interferen ,the LCS recovery is to be used to validate the batch <br /> eg en <br /> P Ject Manager "*MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9608098 BLA a5> <br /> i <br />