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404N WigetLane <br /> Sequoia Walnut Ue4,CA 945% <br /> Analytical FAX_ _ �162)988 9673 <br /> www se oialabs can--- <br /> Secor-Rancho Cordova Project Arco <br /> 3017 Kilgore Rd,Ste #100 Project Number Arco#4932 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03-Jul-02 18 29 <br /> Total Furgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical- Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lima Notes <br /> Batch 2F20001-EPA 5030B McOH <br /> Matrix Spike(2F20001-MSI) Source W206289-21 Prepared 20-Jun-02 Analyzed 21-Jun-02 <br /> Benzene 0 746 00050 mg/kg 0 800 ND 93 2 50-150 <br /> Toluene 0 746 00050 0 800 ND 932 50-150 <br /> Ethylbenzene 0 762 00050 0 800 ND 95 2 50-150 <br /> Xylenes(total) 232 00050 240 ND 967 50-150 <br /> Surrogate a a a-Trxfluorotoluene 0 574 0 600 95 7 40-140 <br /> Matrix Spike Dup(2F20001-MSD]) Source W206289-21 Prepared 20-Jun-02 Analyzed 21-Jun-02 <br /> Benzene 0 728 00050 mg/kg 0 800 ND 910 50-150 244 20 <br /> Toluene 0 732 00050 0 800 ND 91 5 50-150 189 20 <br /> Ethylbenzene 0 744 00050 0 800 ND 93 0 50-150 239 20 <br /> Xylenes(total) 228 00050 240 ND 95 0 50-150 1 74 20 <br /> Surrogate a a a-7'rxfluorotoluene 0 576 0 600 960 40-140 <br /> equoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> h custody document This analytical report must be reproduced in its entirety <br /> U Page 5 of 7 <br />