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eSequoia 1455 McDowell Blvd,North Su 1) <br /> Petaluma,CA 94954 <br /> A (707)792-1842 <br /> Analytical <br /> _ FAX(707)792-0342 <br /> 'www sequoialabs corn <br /> URS Corp-Sacramento Project-j Arco Site 2130,Stockton,CA P306252 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number- Tntrim-50293 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 06/27/03 17 13 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> Analyte Result Lcmtt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-6(P306252-22)Water Sampled 06/11/03 1135 Received:06/12/03 1145 <br /> Gasohne Range Organics 53 50 ug/l 1 3060383 06/17/03 06/17/03 EPA HC-19 <br /> 80158/802113 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 ^ „ <br /> Surrogate aa,a-Trafluorotoluene 96% 65-135 ^ ^ <br /> Surrogate 4-Bromo}luorobenzene 103% 65-135 A r ^ <br /> MW-7(P306252-23)Water Sampled 06/11/03 03:52 Received.06/12/0311 45 <br /> Gasoline Range Organics ND 50 ug/1 1 3060546 06/23/03 06/23/03 EPA <br /> 8015B/8021B <br /> Benzene ND 050 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 050 <br /> Aftenes(total) ND 050'Wr <br /> ogate a a,a-Tri luorotoluene 104% 65-135 u H ^ ^ <br /> Surrogate 4-Bromofluorobenzene 95% 65-135 „ ^ <br /> I <br /> o <br /> Uoia Analytical-Petaluma The results m this report apply to the samples analyzed to accordance Wath 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 10 of 27 <br />