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885 Jarvis Dr <br /> Sequoia Morgan Hili,CA 95037 <br /> Analytic.%] FAX(408)776-9600 <br /> H. (408)782-6308 <br /> www.sequoialabs.ccm <br /> tus Environmental Inc. Project: ARCO#5469,Stockton,CA MLK0837 <br /> 30 Cameron Park Dr.,Suite 550 Project Number: ARCO#5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 12/23/02 10:37 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEX by EPA 8021B <br /> Sequoia Analytical -Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> CPT1-52-5 LK0837-01 Soil Sampled: 11/2110210:15 Received: 11121/0215:45 <br /> Gasoline Range Organics(C6-C10) ND 0.50 mg/kg 1 2LO5001 12/05/02 12/05/02 8015Bm/8021B <br /> Benzene ND 0.0050 11 11 " " " <br /> Toluene ND 0.0050 IF " " " 11 <br /> Ethylbenzene ND 0.0050 " IF <br /> " <br /> Xylenes(total) ND 0.010 " <br /> Surrogate:a,a,a-Trifluorotoluene 104% 64-145 " <br /> Surrogate:4-Bromofluorobenzene 114 % 41-173 " <br /> CPT1-62-W(MLK0837-02)Water Sampled: 11/21/02 10:30 Received: 11/21/02 15:45 <br /> Gasoline Range Organics (C6-C10) ND _ 50 ug/l I 2LO4004 12/04/02 12/04/02 8015Bm/8021B <br /> Benzene ND 0.50 11 IF <br /> Toluene ND 0.50 " <br /> Ethylbenzcne ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 76.7% 55-142 IF <br /> 11 <br /> " <br /> 0.1-72-W MLK0837-03 Water Sampled: 11/21/0211:10 Received: 11/2110215:45 <br /> Wsolme Range Organics(C6-C10) ND 50 ug/l l 2LO4004 12/04/02 12/04/02 8015Bm18021B <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 83.5 % 55-142 IF <br /> CPT1-91-W LK0837-04 Water Sampled: 11121/0211:50 Received: 11/21/0215:45 <br /> Gasoline Range Organics(C6-CIO) ND 50 ug/l 1 2LO3002 12/03/02 12/03/02 8015Bm/8021B <br /> Benzene 0.92 0.50 " <br /> Toluene 1.3 0.50 " IF " <br /> Ethylbenzene 1.4 0.50 <br /> Xylenes(total) 4.4 0.54 " <br /> Surrogate:a,a,a-Trifluorotoluene 99.2% 55-142 <br /> oia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 3 of 13 <br />