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885 Jarvis Dr <br /> r Sequoia MvganHill,CA95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www.sequoialabs.can <br /> tus Environmental lnc. Project; ARCO#5469,Stockton,CA MMA0406 <br /> 0 Cameron Park Dr.,Suite 550 Project Number: ARCO#5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 02/11/03 14:07 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEX by EPA 8021B <br /> Sequoia Analytical -Morgan Mill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-5(MMA0406-05)Water Sampled: 01/14/03 08:20 Received:0111410310:30 _ <br /> Gasoline Range Organics(C6-C10) 1100, 250 ug/l 5 3A28003 01/28/03 01/28/03 8015Bm/8021B HC-12 <br /> Benzene 2.9 2.5 " <br /> Toluene ND 2.5' " <br /> Ethylbenzene ND 2.5, " <br /> Xylenes(total) 6.2 ,/ 2.5 " <br /> Surrogate: a,a,a-Trifluorotoluene 87.0% 55-142 " <br /> MW-6(MMA0406-06)Water Sampled: 01/14/03 08:01 Received:01/14/03 10:30 HT-04 <br /> Gasoline Range Organics(C6-C10) 33000' 25000 ug/i 500 3804002 02/04/03 02/04/03 8015Bm/8021B HC-19 <br /> Benzene ND 250- " <br /> Toluene ND 250 <br /> Ethylbenzene ND 250 " <br /> Xylenes(total) ND 250' " <br /> Surrogate:a,a,a-Trifluorotoluene 105% 55-142 <br /> MW-7 MMA0406-07 Water Sampled: 01/14/03 07:17 Received:01/14/03 10:30 <br /> Oline Range Organics(C6-C 10) ND 50, ug/l I 3BO1002 02/01/03 02/01/03 8015Hm/8021B HT-04 <br /> en,ene ND 0.50• 171'1'-04 <br /> T6luene ND 0.50' HT-04 <br /> Eihylbenzene ND 0.50' HT-04 <br /> Xylenes(total) ND 0.50 ' HT-04 <br /> Surrogate: a,a,a-Trifluorotoluene 95.8% 55-142 HT-04 <br /> _MW-8(MMA0406-08)Water Sampled: 01/14/03 06:55 Received:01/14/03 10:30 <br /> Gasoline Range Organics(C6-C10) 26000 5000 ug/l 100 3A28003 01/28/03 01/28/03 8015Bm/8021B HC-12 <br /> Benzene 6200 ' 50 It " <br /> Toluene ND 50. " <br /> Ethylbenzene ND 50 " <br /> Xylenes(total) ND 50 " <br /> Surrogate: a,a,a-Trifluorotoluene 108% 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 /> 4 of 34 <br />