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Ti <br /> Z Sequoia 1455 McDowell Blvd,North Ste <br /> Petaluma,CA 94954 <br /> 4 <br /> r (707)792-1865 <br /> Analytical <br /> FAX(707)792-0342 <br /> www sequotalabs com <br /> URS Corp-Sacramento Project Arco Site 2186,Stockton,CA P403321 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36593 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 03/29/04 17 13 <br /> Purgeable Hydrocarbons by EPA 8015B <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1(P403321-01)Water Sampled 03/10/04 04 47 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-C10) 2600 — 500 ug/l 10 4030650 03/23/04 03/23/04 EPA HC-19 <br /> d <br /> se Y ee i- k ai C S (�>a rnb�M�� Yrt7/3 r)n�.s+ k7062&'® <br /> 706 'V 015B-VOA <br /> Surrogate 4-Bromoluorobenzene 95% 65-135 <br /> MW-2(P403321-02)Water Sampled 03/10/04 06 12 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-CIO) ND 50 ugA 1 4030650 03/23104 03/23/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 91 % 65-135 " <br /> MW-3(P403321-03)Water Sampled 03/10/04 05 41 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/1 1 4030650 03/23/04 03/23/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromof7uorobenzene 94% 65-135 " <br /> MW-4(P403321-04)Water Sampled 03/10/04 04 09 Received 03/15/04 08 40 <br /> ohne Range Organics(C6-C10) 1900 - 50 &.0 <br /> 1 4030650 ,&3/23/04 03/23/04 EPA HC-19 <br /> c r ' tai GSbc*h mT�c �r narrAh-i Z 8015B-VOA <br /> Surrogate 4-Bromgfluorobenzene 94% 65-135 " <br /> MW-5(P403321-05)Water Sampled 03/10/04 07 11 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 4030650 03/23/04 03/23/04 EPA <br /> r 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 " <br /> MW-6(P403321-06)Water Sampled 03/10/04 06 31 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-CIO) ND , 50 ug/l 1 4030650 03/23/04 03/23/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 98% 65-135 " <br /> MW-7(P403321-07)Water Sampled 03/10/04 06 50 Received 03/15/04 08 40 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/1 1 4030650 03/23/04 03/23/04 EPA <br /> 8015E-VOA <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 " <br /> quoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 3 of 15 <br />