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Sequoia 1455 McDowell Blvd North Ste <br /> Petaluma CA 94954 <br /> Analytical (70 )797 1865 <br /> t=Ax(70 <br /> 7)792 0342 <br /> qW www se4votalahs co <br /> Secor-Rancho Cordova Prosect Arco Site 4932,Stockton,CA P310580 <br /> 3017 Kilgare Road Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/06/03 18 54 <br /> Conventional Chemistry Parameters by APHAIEPA Methods - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3100451 -EPA 3510C <br /> Blank(3100451-BLKI) Prepared&Analyzed 10/31/03 <br /> TRPH ND 50 mall <br /> Laboratory Control Sample(3100451-BSI) Prepared&Analyzed 10/31/03 <br /> TRPH 8 18 50 mg/1 800 102 70-130 <br /> Laboratory Control Sample Dup(3100451-BSDI) Prepared&Analyzed 10/31/03 <br /> TRPH 8 18 50 mg/I goo 102 70-130 0 30 <br /> i <br /> Sequoia Analytical -Petaluma The results in this report apply to the samples analyzed in accordance with the chain of. <br /> custody document Unless otherwise stared results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 18 of 19 <br />