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r }� Sequoia 1455 McDowell Blvd North Ste D <br /> ���......�` � �.� Petaluma CA 94954 <br /> D— (707)792-1865 <br /> � t Analytical FAX(707)792 0342 <br /> . www scquotalabs corn <br /> URS Coro-Sacramento Project Arco Site 6100,Tracy,CA P404555 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36619 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 05/13/04 18 04 <br /> Purgeable Hydrocarbons by EPA 8015B <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B4241 (P404555-01)Sod Sampled 04/21/04 09 47 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C 12) ND 1 0 mg/kg 1 4050059 05/04/04 05/04/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 93% 65-135 " <br /> B42-54(P404555-02)Soil Sampled 04/21/04 10 30 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C12) ND 10 mg/kg 1 4050059 05/04/04 05/04/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 90% 65-135 " <br /> B42-62(P404555-03)Soil Sampled 04/21/04 10 52 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-Ci2) 290 200 mg/kg 100 4050115 05/05/04 05/05/04 EPA <br /> 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 115% 65-135 " <br /> 842-77(P404555-04)Sod Sampled 04/21/04 11 50 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C12) ND 10 mg/kg 1 4050059 05/04/04 05/04/04 EPA <br /> 8015B VOA <br /> Surrogate 4-Bromofluorobenzene 98% 65-135 o' <br /> B42-85(P404555-05)Soil Sampled 04/21/04 12 17 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C12) ND 10 mg/kg l 4050059 05/04/04 05/04/04 EPA <br /> 8015E VOA <br /> Surrogate 4-Bromofluorobenzene 96% 65-135 <br /> B42-98(P404555-06)Sod Sampled 04/21/04 13 40 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C12) 900 500 mg/kg 250 4050115 05/05/04 05/05/04 EPA <br /> 8015B VOA <br /> Surrogate 4-Bromofluorobenzene 155% 65-135 S07 <br /> B42-109(P404555-07)Soil Sampled 04/21/04 14 19 Received 04/23/04 11 50 <br /> Gasoline Range Organics(C4-C12) ND 10 mg/kg 1 4050059 05/04/04 05/04/04 EPA <br /> 8015B VOA <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 " 11 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> . ofeustody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must he reproduced in its entirety <br /> Page 3 of 18 <br />