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� � � 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> f 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> �H } 819 Striker Avenue Suite B Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> pati R Analy tical 1455 McDowell Blvd North Sten Petaluma CA 94954 (707)792-1$65 FAX(707)792-0382 <br /> . 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Cambria Environmental Tech Client Project ID Shell 341 Main St , Ripon <br /> 1144 65th St, Ste C Matrix Liquid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9902E25-04, 06, 07 Reported Mar 25, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch#: GCO305991SHSHSB GC0305991SHSHSB GC03059918HSHSB <br /> Analy Method. ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst MM MM MM <br /> MS/MSD# 9902EP-404 9902E2404 9902E2404 <br /> Sample Cone N D N D N D <br /> Prepared Date 3/4/99 3/4/99 3/4/99 <br /> Analyzed Date 3/4/99 3/4/99 3/4/99 <br /> Instrument I D # GCV1 GCvi GCvi <br /> Cone. Spiked 8 0 mg/Kg 8 0 mg/Kg 8 0 mg/Kg <br /> Result 77 88 93 <br /> GMS % Recovery 96 110 116 <br /> Dup Result 73 85 87 <br /> MSD % Recov 91 106 109 <br /> IRPD 53 35 67 <br /> RPD Limit. 0-50 0-50 0-50 <br /> LCS#: LCS030599 LCS030599 LCS030599 <br /> Prepared Date- 3/5/99 3/4/99 3/4/99 <br /> Analyzed Date: 3/5/99 3/4/99 3/4/99 <br /> Instrument I D#: GCV1 GCV1 GCV1 <br /> Cone Spiked: 8 0 mg/Kg 8 0 mg/Kg 8 0 mg/Kg <br /> LCS Result: 83 91 91 <br /> LCS % Recov : 104 114 114 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> �EQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> 1 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 /> Ka an Klmyai **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference <br /> Project Manager 99021=24 CCC <4> <br />