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Sequoia 680 Chesapeake Drive Redwood Ciq CA 94063 (415) 364 9600 F 41 <br /> AX( S) 364 9233 <br /> Analytical 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> RESNA' Client Project 1D F7132 94, Cwckstop 432 <br /> 42501 Albrae Street Matnx LIQUID <br /> Fremont, CA 94538 <br /> Attention Rich Garlow Work Order# 9411357 01,02 Reported Nov 21, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# AS111194BTEXGCA AS111194STEXGCA ASIII194BTEKGCA AS111194BTD(GCA <br /> Analy Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method' N A. NX N A N A. <br />' Analyst. N Zahedo N Zahedo N Zahedo N Zahedl <br /> MS/MSD #• 4110149 4110149 4110149 4110149 <br /> Prepared Date* 11/11/94 11/11/94 11/11/94 11/11/94 <br /> Analyzed Date, 11/11/94 11/11/94 11/11/94 11/11/94 <br /> Instrument LD #. HPI HPI HP1 HPI <br /> Conc. Spiked- 10,ug/L 10ug/L 10pg/L 30pg/L <br /> MS % Recovery: 85 a5 83 86 <br /> MSD % Recov.- 87 87 88 90 <br /> RPD: 23 23 36 45 <br /> RPD Umd 0-50 0-50 0.50 asp <br /> LCS # LCS111194 LCS111194 LCS111194 LCS111194 <br /> Prepared Date: 11/11/94 11/11/94 11/11/94 11/11/94 <br /> Analyzed Date 11/11/94 11/11/94 11/11/94 11/11/94 <br /> Instrument I D #. HPI HP1 HPI HP1 <br /> LCS % Recov.: 102 105 106 108 <br /> LCS <br /> Control Umits 71-133 72-128 72-130 71-120 <br /> I Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spoke is an aliquot of sample <br /> —01 fortified with known quantities of specific compounds and subjected to the entire anatyboat procedure it <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 /> Vic ue Tague Clark <br /> Project Manager **MS=Matrix Spike,MSD-MS Duplfoate,RPD=Relative%DtHerence 9411357 RES <1> <br />