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+ Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> ,!1) 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> ftilll r Analytical a 19 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> `ri '}r ii' v *moi Si n n 4JxJn{v 4y{}wnn- r vtv i�.xn i v h r1? n .4 w t rr {�rry <br /> n4nClentPro'601D Chexion9-8264/976827-TfSBlame TechSnc vr <br /> {1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> 'Attention Fran Thie Work Order# 9708E76-01 thru 04 Reported Sep 9, 1997' <br /> r a: <br /> QUALITY CONTROL DATA REPORT <br /> nalyte' Diesel Methanol MTBE <br /> QC Batch# GC0828970HBPEXB GC0902971SHSHSA MS090497MTBEF3A <br /> Analy Method. EPA 8015M ISHS EPA 8260 <br /> Prep. Method EPA 3510 HS <br /> Analyst G Fish T Tran L Zhu <br /> MS/MSD# 9708E48-W 159708078-01 9709042-06 <br /> Sample Conc . N D N D N D <br /> Prepared Date 8/28/97 9/2/97 9/4/97 <br /> Analyzed Date 8/29/97 9/2/97 9/4/97 <br /> Instrument I D.# GCHP413 GCV-01 F3 <br /> Conc. Spiked 100opg/L 8 0 mg/L 50 pg/L <br /> Result 990 83 50 <br /> MS % Recovery- 99 104 100 <br /> Dup Result 940 78 45 <br /> MSD % Recov 94 98 90 <br /> RPD 52 62 11 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS# 13LK08289713s BLK090297 VDB0904S <br /> Prepared Date 8/28/97 9/2/97 9/4/97 <br /> Analyzed Date 8/29/97 9/2/97 9/4/97 <br /> Instrument I D #. GCHP4B GCV-01 F3 <br /> Conc Spiked 1000 pg/L 8 0 mg/L 50119/L <br /> LCS Result 840 80 53 <br /> LCS % Recov 84 100 106 <br /> 50-150 50-150 60.140 <br /> LCS 60-140 50-150 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> 1112 A 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 /> P gg nner interference,the LCS recovery is to be used to validate the batch <br /> Pr ct Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 970SE76 BLA <5;� <br /> .t?tk <br />