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L404.Sequoia 614)sapeake Drive Redwood City CA 9 1 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 8195triker Avenue,Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> • <br /> Cambria Environmental Tech Client Project ID Shell 341 Main St, Ripon <br /> 114465th St, Ste C Matrix Liquid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9903085 017-06 Reported Mar 19, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol Ethanol Iso-propanol <br /> OC Batch#: GC0305991SHSHSB GC0305991$HSHSB GCO305991SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method: HS HS HS <br /> Analyst: M M M M M M <br /> MS/MSD # 9902E2404 9902E2404 9902E2404 <br /> Sample Conc . ND ND ND <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 GCv1 GCv1 <br /> Conic Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 77 88 93 <br /> S %Recovery- 96 110 116 <br /> Dup Result: 73 85 87 <br /> MSD% Recov 91 106 109 <br /> RPD 53 35 B7 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS # LGS030599 LCS030599 LCS030599 <br /> Prepared Date 3/5/99 3/5/99 3/5/99 <br /> Analyzed Date 3/5/99 3/5/99 3/5/99 <br /> Instrument I D # GCv1 GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/l_ 8 0 mg/L <br /> LCS Resuft 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 at 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 /> f 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 /> n Ki all <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9903085 CCC <1> <br />