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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 K 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 /> ' � .. <br /> ::::::::.............................................. <br /> �►3lane�echSenlces-, Iric. Client Project .$h'eIl 1267Cuntr Club <br /> ............ <br /> .>1680 Rogers Ave. Matrix: Liquid <br /> -':San Jose, CA 95112 <br /> ".".Attention: Fran Thie Work Order#: 9802J20-05-06 Reported: Mar 20, 1998:x;: <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC031298BTEX02A GC0312988TEX02A GC031298BTE)(02A GC0312983TEX02A GCO31298STEX02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: C.DeMartini C.DeMartini C. DeMartini G.DeMartini C.DeMartini <br /> MS/MSD#: 9803J2501 9803J2501 9803J2501 9803J2501 9803J2501 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Analyzed Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10 yg/L 10 Ng/L 10 jug/L 30 ug/L 60 ug/L <br /> Result: 8.7 8.3 8.4 25 64 <br /> MS % Recovery: 87 83 84 83 107 <br /> Dup. Result: 8.8 8.4 8.5 25 64 <br /> MSD % Recov.: 88 84 85 83 107 <br /> RPD: 1.1 1.2 1.2 0.0 0.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS#: BLK031298 13LK031298 BLK031298 BLK031298 BLK031298 <br /> Prepared Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Analyzed Date: 3/12/96 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10lig/L 10pg/L 10frg/L 30yg/L 60l[g/L <br /> LCS Result: 8.9 8.6 8.6 25 65 <br /> LCS % Recov.: 89 86 86 83 108 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 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 /> VeggyLALYTICAL 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 /> anager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9802J20.BLA <3> <br />