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Seq � � 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ur " 404 N Wiget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-010o <br /> Analytical 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 /> Cambria Environmental Tech Client Project ID Shelf 341 Main St , Ripon n <br /> 114465th St , Ste C Matrix Liquid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9902E25-12 Reported Mar 25, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> TCLP TCLP TCLP TCLP <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> OC Batch# ME0305992007MDA ME0305992007MDA ME0305992007MDA ME0305992007MDA <br /> Anally Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Prep Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst M Vu M Vu M Vu M Vu <br /> MS/MSD# 990308901 990308901 990308901 990308901 <br /> Sample Conc N D N D N D 033 <br /> Prepared Date 3/5/99 3/5/99 3/5/99 3/5/99 <br /> Analyzed Date 3/5/99 3/5/99 3/5/99 3/5/99 <br /> Instrument I.D# MTJA5 MTJA5 MTJA5 MTJA5 <br /> IConc Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 099 098 099 13 <br /> �MS %Recovery 99 98 99 130 <br /> Dup Result 10 10 10 13 <br /> MSD % Recov 100 100 100 130 <br /> RPD 10 20 10 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> I <br /> LCS# LCS030599 LC8030599 LCS030599 LCS030599 <br /> Prepared Date 3/5/99 3/5/99 3/5/99 3/5/99 <br /> Analyzed Date 3/5/99 3/5/99 3/5/99 3/5/99 <br /> Instrument I D# MTJA5 MTJA5 MTJAS MTJA5 <br /> Conc. Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result 10 10 11 11 <br /> LCS% Recov • 100 100 110 110 <br /> 80-120 80-120 80-120 80-120 <br /> LCS 80-120 80-120 80-120 80-120 <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 /> �EOUOIA ANALYTICAL 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 /> Kayvan Kimyai <br /> Project Manager *"'MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9902E24 CCC <6> <br />