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• ' sesapeake Drive Redwood City,CA 94 (650)364-9600 FAX(650)364.9233 <br /> Sequoia 404 N.WlSet Lane Walnut Creek,CA 94598 (925)98&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 1ndustrlal Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-96t2 <br /> Sequoia Analytical Client Project I :M'1965442 J"Gettier-Ryan Inc. <br /> :.:. <br /> X. <br /> 1551 Industrial Bled. Matrix: Liquid <br /> San Carlos, CA 94070 <br /> Attention: Mike Gregory QC Sample Group: 9052163-73 Reported: Jun 21, 1999nr <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> QC Batch#: GCO60299 GCO60299 GCO60299 GCO60299 SP052899 <br /> 8.020n- - so2oos-802005A 802005A 8015EXA <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 3510 <br /> Analyst: D, Newcomb D.Newcomb D.Newcomb D.Newcomb K.Grubb <br /> MS/MSD #: 9052170 9052170 9052170 9052170 BLK052899A <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 06/02/99 06/02/99 06/02/99 06/02/99 05/28/99 <br /> Analyzed Date: 06/02/99 06/02/99 06/02/99 06/02/99 06/02/99 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 HP313 <br /> Conc. Spiked: 20ug/L 20ug/L 20yg/L 60ug/L 500ug/L <br /> Result: 19 19 19 58 470 <br /> MS % Recovery: 95 95 95 97 94 <br /> Dup. Result: 21 21 20 63 460 • <br /> r <br /> MSD % Recov.: 105 105 100 105 92 <br /> RPD: 10 10 5.1 8.3 2.2 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-50 <br /> LCS #: 5LCS060299 5LCS060299 5LCS060299 5LCS060299 LCS052899A <br /> Prepared Date: 06/02/99 06/02/99 06/02/99 06/02/99 05/28/99 <br /> Analyzed Date: . - _-06/02/9,9 _ ... --.-06/02/99.___ _ 06/02/99 /02/99.-- 06/02/99 ---- — <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 HP3B <br /> Conc. Spiked: 20ug/L 20Mg/L 20ug/L 60Ng/L 500 Ng/L <br /> LCS Result: 20 19 19 60 420 <br /> LCS %Recon.: 100 95 95 100 84 <br /> LCS 70-130 70-130 70.130 70-130 60-140 <br /> Control Limits <br /> PleaseNote: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQU IA 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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> _ y�_ _ —_�_ _-__ interference,.the LCS.recove is..to_he used-to-validate-the-batch, ------- --- ------------ <br /> Charlie- WeStWater - Matnx ple,MW - M6 Uuphcate,HFU Helative erence <br /> Project Manager <br /> 9052163.SSS <6> <br />