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0 <br /> 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> TG Associates Inca ... Client Project ID: inland Parif Co'.""64i'72..9...5..0 <br /> 001 <br /> :> 1117 Lone Palm Ave. Suite B Matrix. Liquid <br /> Modesto, CA 95351 <br /> Attention: Drew Van Allen QC Sample Group: 9061071-073 Reported: Jun 21, 1999,:,:: <br /> 01 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> QC Batch#: GCO61799 GC061799 GCO61799 00061799 SP061699 <br /> 802002A 802002A 802002A 802002A 8015EXA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015Mod. <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 3510 <br /> Analyst: J. Minkel J. Minkel J. Minkel J.Minkel K.Grubb <br /> MS/MSD#: 9061053 9061053 9061053 9061053 BLK061699 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 6/17/99 6/17/99 6/17/99 6/17/99 6/16/99 <br /> Analyzed Date: 6/17/99 6/17/99 6/17/99 6/17/99 6/17/99 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3A <br /> Cone. Spiked: 20,ug/L 20ug/L 20pg/L 60pg/L 500frg/L <br /> Result: 0 0 0 0 520 <br /> MS %Recovery: 0 0 0 0 104 <br /> Dup. Result: 0 0 0 0 410 <br /> 0 MSD% Recov.: 0 0 0 0 82 <br /> RPD: - - - - 24 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-50 <br /> LCS#: 2LCS061799 2LCS061799 2LCS061799 2LCS061799 LCS061699 <br /> Prepared Date: 6/17/99 6/17/99 6/17/99 6/17/99 6/16/99 <br /> Analyzed Date: 6/17/99 6/17/99 6/17/99 6/17/99 6/17/99 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3A <br /> Cone. Spiked: 20fug/L 20ug/L 2099/1- 60yg/L 500 ug/L <br /> LCS Result: 19 17 18 60 470 <br /> LCS% Recov.: 95 85 90 100 94 <br /> LCSD Result: 19 18 18 59 <br /> LCSD% Recov.: 95 90 90 98 <br /> LI✓S 70-130 70-130 70-130 70-130 60-140 <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 /> SEQUOIA ANALYTICAL, #1271 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 /> AAS the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> lN'�•"�' interference,the LCS recovery is to be used to validate the batch. <br /> Dimple Sharma ""`MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference <br /> Project Manager <br /> 9061071.AAA <5> <br />