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` <br /> Sequoia <br /> y o�� 6lsapeake Drive Redwood City CA 94 (650)364-9600 FAX(650)364-9233 <br /> Se lA 40 Wiget Lane Walnut Creek CA 945 (510)988-9600 FAX(510)988-9673 <br /> Analytical <br /> r <br /> ,—!D- 1119 Stnker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Anaca1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shell 341 E Main St <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9804174-01 Reported May 18, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> CC Batch# GC0429981SHSHSB GCO4299818HISHSB GCO429981SHSHSB <br /> Analy. Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst T Sorokin T Sorokin T Sorokin <br /> MS/MSD# 9804E3111 9804E3111 9804E3111 <br /> Sample Cone. N D N D N D <br /> Prepared Date- 4/29/98 4/29/98 4/29/98 <br /> Analyzed Date 4/29/98 4/29/98 4/29/98 <br /> Instrument I D# GCv1 GCv1 GCv1 <br /> Cone Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 70 86 86 <br /> MS % Recovery 88 108 108 <br /> • Dup Result 64 75 74 <br /> MSD% Recov 80 94 93 <br /> RFD 90 14 15 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS# BLK043098 BLK043098 BLK043098 <br /> Prepared Date 4/30/98 4/30/98 4/30/98 <br /> Analyzed Date 4/30/98 4/30/98 4/30/98 <br /> Instrument I D # GCv1 GCv1 GCv1 <br /> Cone Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 77 80 79 <br /> LCS % Recov 95 100 99 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> Please Nate <br /> The LCS is a control sample of known,interferent4ree matrix that is analyzed using the same reagents, <br /> UOI 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 R <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 /> egg P r - <br /> P ct Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference 9804174 BLA <3> <br />