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Sequoia 885larv5037 Mag�u HiD,CA 95037 Analytical (408)776- 1 (408)782-b36300 FAX 08 www.xquoialabs.can tus Environmental Inc. Project: ARCO#5469, Stockton,CA MLK0749 30 Cameron Park Dr.,Suite 550 Project Number: ARCO#5469,Stockton,CA Reported: Cameron Park CA,95682 Project Manager: Jay Johnson 12/19/02 08:44 Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEX by EPA 8021B Sequoia Analytical - Morgan Hill Reporting Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes CPT 1-42 MLK0749-01 Soil Sampled: 11/19/02 15:00 Received: 11/19/02 17:00 Gasoline Range Organics(C6-C 10) ND 0.50 mg/kg I 2K26004 11/26/02 11/26/02 8015Bm/8021B Benzene ND 0.0050 Toluene ND 0.0050 Ethylbenzene ND 0.0050 " Xylenes(total) ND 0.014 " Surrogate:a,a,a-Trifluorotoluene 93.5% 64-145 " " Surrogate:4-Bromofluorobenzene 78.5% 41-173 CPT 1-78 LK0749-02 Soil Sampled: 11/19/02 15:45 Received: 11/19/02 17:00 Gasoline Range Organics(C6-C10) ND 0.50 mg/kg 1 2K26004 11/26/02 11/26/02 8015Bm/802113 Benzene ND 0.0050 Toluene ND 0.0050 Ethylbenzene ND 0.0050 Xylenes(total) ND 0.010 Surrogate:a,a,a-Trifluorotoluene 88.5% 64-145 " « Wgate.-4-Bromofluorobenzene 76,0% 41-173 " CPT 1-93 LK0749-03 Soil Sampled: 11/19/02 16:20 Received: 11/19/02 17:00 Gasoline Range Organics(C6-C10) ND 0.50 mg/kg I 2LO2001 12/02/02 12/02/02 8015Bm18021B Benzene ND 0.0050 Toluene 0.0055 0.0050 " Ethylbenzene ND 0.0050 Xylenes(total) 0.028 0.010 " Surrogate:a,a,a-Trifluorotoluene 74.0% 64-145 " Surrogate:4-Bromofluorobenzene 119% 41-173 Ioia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of custody document. Unless otherwise stated,results are reported on a wet weight basis. This analytical report must be reproduced in its entirety. Page 3 of 9