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819 Stnker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX equo labs c m <br /> www segtiotalabs coin <br /> t <br /> tler-Ryan-Rancho Cordova Project Forster Unocal 2859,Stockton,CA S302536 <br /> 0 Gold Camp Dr,Ste L 70 Project Number NIA Reported <br /> ncho Cordova CA,95670 Project Manager Geoffrey D Risse 03/07/03 18 38 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B - Quality Contr <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3030038-EPA 5030B PCT <br /> Blank(3030038-BLK1) Prepared&Analyzed 03/04/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 20 " <br /> Surrogate a a a-Trifluorotoluene 869 100 87 60-140 <br /> Blank(3030038-BLK2) Prepared&Analyzed 03/05/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> ene ND 050 <br /> (benzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Triuorotoluene 943 100 94 60-140 <br /> Blank(3030038-BLK3) Prepared&Analyzed 03/06/03 <br /> Purgeable Hydrocarbons ND 50 119/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Tri luorotoluene 935 100 94 60-140 <br /> Laboratory Control Sample(3030038-BSI) Prepared&Analyzed 03/04/03 <br /> Benzene 106 050 ug/I 100 106 70-130 <br /> Toluene 11 1 050 100 111 70-130 <br /> Ethylbenzene 103 050 100 103 70-130 <br /> Xylenes(total) 318 050 300 106 70-130 <br /> Methyl tert-butyl ether 113 2 0 100 113 70-130 <br /> �uota Analytical-Sacramento 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 5 of 8 <br />