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885 Jarvis Dr <br /> Sequoia Morg¢n 4 95037 <br /> ( <br /> (400 778)776-9600 <br /> Analytical www <br /> se 08) ldlisc08 <br /> www sequoialcbs can <br /> Stratus Environmental Inc Project ARCO#6100 MLL0896 <br /> 3330 Cameron Park Dr,Suite 550 Project Number ARCO#6100,Tracy,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 01/10/03 13 41 <br /> =asolme (2-Methylpentane to 1,2,4-Trlmethylbenzene) and BTEX by EPA 8015M and 8021B -Quality Contra <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3010076-EPA 5030E PIT <br /> Blank(3010076-BLKI) Prepared.&Analyzed 01/03/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a Trifluorotoluene 998 100 100 60-140 <br /> Laboratory.Control Sample(3010076-BSI) Prepared&Analyzed 01/03/03 <br /> Benzene 936 050 ug/1 100 94 70-130 <br /> Toluene 946 050 too 95 70-130 <br /> Ethylbcnzene 947 050 100 95 70 130 <br /> Wylenes(total) 288 050 300 96 70 130 <br /> Surrogate a a a-Tris luorotoluene 10 7 100 107 60-140 <br /> Duplicate(3 010076-DUP 1) Source MLL0896-03 Prepared&Analyzed 01/06/03 <br /> Purgeable Hydrocarbons ND 50 ug/l ND 200 <br /> Benzene ND 0 50 ND 200 <br /> Toluene ND 050 ND 200 <br /> Ethylbenzene ND 050 ND 200 <br /> Xylenes(total) ND 050 ND 200 <br /> Surrogate a a a-Tris luorotoluene 9 65 100 96 60-140 <br /> Sequoia 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 /> 5 of 7 <br />