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Sequoia 680 Chesapeake Drive Redwood CoM CA 94063 (415) 364 9600 FAX(415)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)986 9673 <br /> q%w Analytical 819 Striker Avenue,Scute 8 Sacramento, CA 95834 (916) 921-9600 FAX(916)921 0i00 <br />*'�nvir(A h tt! ` ' , j �. Client Project ID ' r$liellr6131 Pacrflc, $tocl(tori r ;` <br /> 270 Perkins Ave Matrix Solo! <br /> Sonoma, CA 95476 ' <br /> h Attention Joe Neely Work Order# 9707162 -01-04 Reported Jul 18, 1997 r <br /> .Y +hv}SI-v♦ Y r ♦ y Y Lvv . t r t+ t r r ' <br /> v + ♦ v! r Yv r ! 4v}t r ! v Yv \' r v 1 Y rr r ! v + r' 1 v 'S !ru . n <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC0708976TEXEXB GCO70897BTEXEXB G0070897BTEXEX13 GC0708976TEXE)(B GC070897BTEXEXB <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` A.Porter A-Porter A.Porter A Porter A.Porter <br /> MS/MSD # 970730502 970730502 970730502 970730502 970730502 <br /> Sample Cone.: N D N D N D N D N D <br /> Prepared Date: 7/8/97 7/8/97 7/8/97 7/8/97 7/8/97 <br /> Analyzed Date- 7/9/97 7/9/97 7/9/97 7/9/97 7/9/97 <br /> Instrument 1.13 #. GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Cone Spiked: 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg 12 mg/Kg <br /> Result- 0 16 0 16 0 77 0 51 12 <br /> MS%Recovery- 80 80 85 85 100 <br /> Dup. Result: 017 017 018 0 55 13 <br /> ISD % Recov.: 85 485 90 92 108 <br /> RPD 61 51 57 75 80 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK070997 i3LK070997 BLK070997 BLK070997 BLK070997 <br /> Prepared Date- 7/9/97 7/9/97 7/9/97 7/9/97 7/9/97 <br /> Analyzed Date. 7/9/97 7/9/97 7/9/97 7/-9/97 7/9/97 <br /> Instrument I.D.#: GCHP22 GCHP22 GCHP22 GCHP22 GCHP22 <br /> Cone. Spiked: 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg 1.2 mg/Kg <br /> LCS Result- 018 019 019 062 12 <br /> LCS %Recov.: 90 95 95 103 100 <br /> a <br /> IS/MSD <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LIDS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> v <br /> Please Mote <br /> The GCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> $1=�U01A ALYTICAL 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 /> JGregory <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9707162 EEE <1> <br />