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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical <br /> ` 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Cambria Environmental Client Project ID $hell 341 E Main St <br /> 114465th St , Ste C Matrix Solid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9807C66-01 Reported Aug 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol <br /> QC Batch# GCO723981SHSHSD r <br /> Analy Method ISHS <br /> Prep Method HS <br /> Analyst T Sorokin ' <br /> MS/MSD # 9807C6601 <br /> Sample Conc N D <br /> Prepared Dater 7/23/98 <br /> Analyzed Date 7/23/98 <br /> Instrument I D # GCv1 <br /> Conc Spiked 80mg/Kg <br /> u <br /> Result 68 <br /> MS % Recovery 85 <br /> Dup Result 69 <br /> MSD % Recov 86 <br /> RPD 15 <br /> RPD Limit 0-50 <br /> LCS # LCS072398 <br /> Prepared Date 7/23/98 I <br /> Analyzed Date 7/23/98 <br /> Instrument I D # GCv1 <br /> Conc Spiked 8 0 mg/Kg <br /> LCS Result 85 <br /> LCS % Recov 106 <br /> I <br /> 50-150 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note I <br /> 1 - - - - The LCS is a control sample 6f known,interferent4ree matrix that is analyzed using the same reagents; <br /> SE NALYTICAL 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 /> ega Penner <br /> Oj ct Manager **MS=Matrix Spike, MSR=MS Duplicate, RPD=Relative%Difference 9807C66 CCC a3> <br /> `6t <br />