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Sequoia680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9133 <br /> 6) <br /> 404 N W <br /> iget Un, Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (9t6) 921 9600 FAX(916)921 0100 <br /> Olaine- <br /> Tech Services, Inc ' Client Project ID Shell, Stockton /960905-L1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9609357 -01, 03 Reported Sep 26, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> GC Batch# G0091596BTEX03A GCO91596BTEX03A GCO91596BTEX03A GCO91596BTEX03A <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 Ft Burton R Burton R Burton <br /> MS/MSD# 960909602 960909602 960909602 960909602 <br /> Sample Conc - N D N D N D N D <br /> Prepared Date. 9/15/96 9/15/96 9/15/96 9/15/96 <br /> Analyzed Date 9/15/96 9/15/96 9/15/96 9/15/96 <br /> Instrument I D #. GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked: 10 frg/L 10 pg/L 10 ug/L 30 Fig/L <br /> Result. 87 82 8 0 26 <br /> MS % Recovery- 87 82 so 87 <br /> Dup Result: 76 71 6 9 22 <br /> IVISD % Recov : 76 71 69 73 <br /> RPD 13 14 15 17 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS#. BLK091596 BLK091596 BLK091596 BLK091596 <br /> Prepared Date 9/15/96 9/15/96 9/15/96 9/15/96 <br /> Analyzed Date- 9/15/96 9/15/96 9/15/96 9/15/96 <br /> Instrument I D #' GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked 10 ug/L 10,ug/L 10 pg/L 3o pg/L <br /> LCS Result: 10 97 94 30 <br /> LCS % Recov.: 100 97 94 100 <br /> M D 60-140 60-140 60-140 60-140 <br /> LCS 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 /> S 2:1CAL 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 limas due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> P gyr <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9609357 BLA <1 7 <br />