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r. <br /> Sequoia 1455 McDowell Blvd North,Ste D <br /> �. Petaluma,CA 94954 <br /> (707)792-1865 <br /> Analytical FAX(707) l0342 <br /> wwwsequoialababs coin <br /> Gettler-Ryan-Dublin Project Tosco <br /> 6747 Sierra Ct, Suite J Project Number 2701 West March Lane,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 02/27/01 10 24 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MI8020M <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(P102018-01)Water Sampled 01/3110100 00 Received 02/01/0I 15 00 <br /> Gasoline ND 500 ug/I 1 1020053 02/02/01 02/02/01 EPA <br /> 8015M/8020M <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 " ^ <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a a a-Trifluorotoluene 106% 65-135 ^ <br /> Surrogate 4-Bromofluorobenzene 983 % 65-135 <br /> MW-3-BP(P102018-02)Water Sampled 01/31/0107 35 Received 02/01/01 15 00 <br /> Gasoline ND 2500 ug/1 50 1020053 02/02/01 02/02/01 EPA <br /> Benzene ND 25 0 8015M/8020M <br /> We <br /> ND 25 0 <br /> enzene ND 25 0 <br /> Xylenes(total) ND 25 0 ^ <br /> Methyl tert-butyl ether 14900 125 <br /> Surrogate a,a a-Triuorotoluene 108% 65-135 ^ <br /> Surrogate 4-Bromofluorobenzene 990% 65-135 " ^ <br /> MW-3-AP(P102018-03)Water Sampled 01/31/01 10 25 Received 02/01/01 15 00 <br /> Gasoline ND 2500 ug/l 50 1020053 02/02/01 02/02/01 EPA <br /> 8015 M/8020M <br /> Benzene ND 25 0 <br /> Toluene ND 25 Q " <br /> Ethylbenzene ND 25 0 " ^ <br /> Xylenes(total) ND 250 <br /> Methyl tert-butyl ether 14100 125 <br /> Surrogate a a,a-Trifluorotoluene 108% 65-135 ^ " <br /> Surrogate 4-Bromofluorobenzene 963% 65-135 ^ ^ ^ <br /> oia Analytical-Petaltuna The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 2 of 14 <br />