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(D— (7Sequoia <br /> 1455 McDowell t ui North <br /> S Q q u Q 1 a Petalluma CA 94949 544 <br /> r <br /> 07)792 1865 <br /> qW Analytical FAX(707)7920342 <br /> www sequoialabs c� <br /> Secor-Rancho Cordova Project Arco Site 4932,Stockton,CA P310580 <br /> 3017 Kilgare Road Suite 100 Project Number 38984 Reported, <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/06/03 18 54 <br /> 1 Purgeable Hydrocarbons and BTEX by EPA 8015B18021B <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Urnn UnlL$ Dilution Batch Prepared Analyzed Method Notes <br /> Eff(P310580-01)Air Sampled 10/23/03 11 06 Received 10/23/03 14 30 HT-09 <br /> Gasoline Range Organics ND 10 mg/ml Air 02 3100757 10/30/03 10/30/03 EPA <br /> 8015B/8021B <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 ~ <br /> Gasoline Range Organics ND 28 ppmv 02 <br /> Surrogate 4-Bromofluorobenzene 94% 65-135 11 " " <br /> Inf(P310580-02)Air Sampled 10/23/03 11 08 Received 10/23/03 14 30 HT-09 <br /> Gasoline Range Organics 2200 50 mg/ml Air 1 3100757 10/30/03 10/30/03 EPA <br /> 8015B/802 I B <br /> Surrogate 4-Bromofluorobenzene 118% 65-135 " <br /> Gasoline Range Organics 620 14 ppmv " ^ <br /> Surrogate 4-Bromofluorobenzene 118% 65-135 " <br /> A S (P310580-03)Air Sampled 10/23/03 11 10 Received 10/23/03 14 30 HT-09 <br /> Gasoline Range Organics 1400 100 mg/ml Air 2 3100757 10/30/03 10/30/03 EPA <br /> 801513/8021B <br /> Surrogate 4-Bromofluorobenzene 92% 65-13S " <br /> Gasoline Range Organics 410 28 ppmv 2 <br /> Surrogate 4-Bromofluorobenzene 92% 65-135 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custodi document Unless otherwise stated results are reported on a u et weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 4 of 19 <br />