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� fl 680 Chesapeake Drive Redwood City CA 94063 (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 <br /> � 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> ,Y 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • 1551 Industnal 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 Solid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9902E25-12 Reported Mar 25, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> TTLC TTLC TTLC TTLC TTLC <br /> Analyte Beryllium Cadmium Chromium Nickel Mercury <br /> OC Batch# ME030499601OMDE ME0304996010MDE ME030499601OMDE ME030499601OMDE ME0304997471 M4 <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 7471 <br /> Prep Method EPA 3050 EPA 3050 EPA 3050 EPA 3050 EPA 7471 <br /> Analyst R Sharma R Sharma R Sharma R Sharma F Q <br /> MS/MSD# 990308801 990308801 990308801 990308801 990308801 <br /> I Sample Cone N D N D N D N D N D <br /> Prepared Date 3/4/99 3/4/99 3/4/99 3/4/99 3/4/99 <br /> Analyzed Date: 3/4/99 3/4/99 3/4/99 3/4/99 3/4/99 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 MPE4 <br /> Cone Spiked 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg 2 0 mg/Kg <br /> 11 Result 45 44 46 45 17 <br /> 91VIS % Recovery 90 88 92 90 85 <br /> Dup Result 45 46 47 46 17 <br /> MSD %Recov 9Q 92 94 92 85 <br /> IRPD 00 44 22 22 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-20 <br /> F <br /> LCS#- LCS030499 LCS03D499 LCS030499 LCS030499 LCS030499 <br /> Prepared Date 3/4/99 3/4/99 3/4/99 3/4/99 3/4/99 <br /> Analyzed Date 3/4/99 3/4/99 3/4/99 3/4/99 3/4/99 <br /> Instrument I.D # MTJA5 MTJA5 MTJA5 MTJA5 MPE4 <br /> Cone Spiked 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg 2 0 mg/Kg <br /> LCS Result: 48 49 49 48 19 <br /> LCS % Recov : 96 98 98 96 95 <br /> 80-120 80-120 80-120 80-120 75-125 <br /> LCS 80-120 80-120 80-120 80-120 75-125 <br /> Control Limits <br /> Please Nate <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 /> Zyvan Kimyai <br /> IProject Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9902E24 CCC <5> <br />