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1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma CA 94954 <br /> Analytical (707labs om <br /> 65 <br /> FAX(707)792-034www. <br /> www sequotaialabcom <br />' URS Corp-Sacramento Project Arco Site 760,Lodi,CA P403546 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number G09JZ-0039 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 03/26/04 16 40 <br /> I <br /> Purgeable Hydrocarbons and BTEX by EPA 801513I802113 - Quality Control <br /> Sequoia Analytical -Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4030739-EPA 5030,soils <br /> Blank(4030739-BLKI) Prepared&Analyzed 03/25/04 <br /> Gasoline Range Organics(C6-C 10) ND 1 0 mg/kg <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 <br /> Surrogate a a a-Trti luorotoluene 0198 0 300 99 65-135 <br /> Surrogate 4-Bromofluorobenzene 0 260 0 300 87 65-135 <br /> Laboratory Control Sample(4030739-BSI) Prepared&Analyzed 03/25/04 <br /> Gasoline Range Organics(C6-C10) 2 12 10 mg/kg 2 75 77 65-135 <br /> Benzene 00349 00050 00335 104 65-135 <br /> Toluene 0 179 00050 0 190 94 65-135 <br /> Nothylbenzene 00440 00050 00455 97 65-135 <br /> y1crics(total) 0 213 00050 0 222 96 65-135 <br /> Surrogate a a a-Trifluorotoluene 0 289 0 300 96 65-135 <br /> Surrogate 4-Bromofluorobenzene 0 265 0 300 88 65-135 <br /> Matrix Spike(4030739-MSI) Source P403546-02 Prepared&Analyzed 03/25/04 <br /> Gasoline Range Organics(C6 C 10) 1 96 10 mg/kg 275 0 016 71 65-135 <br /> Benzene 00321 00050 00335 ND 96 65-135 <br /> Toluene 0 165 00050 0 190 000039 87 65-135 <br /> Ethylbenzene 00407 00050 00455 ND 89 65-135 <br /> Xylenes(total) 0 197 00050 0 222 000063 88 65-135 <br /> Surrogate a a a-Trifluorotoluene 0 249 0 300 83 65-135 <br /> Surrogate 4-Bromofluorobenzene 0 238 0 300 79 65-135 <br /> Matrix Spike Dup(4030739-MSD1) Source P403546-02 Prepared&Analyzed 03/25/04 <br /> Gasoline Range Organics(C6-C 10) 191 1 0 mg/kg 2 75 0 016 69 65-135 3 20 <br /> Benzene 00319 00050 00335 ND 95 65-135 0 6 20 <br /> Toluene 0 166 00050 0 190 000039 87 65-135 0 6 20 <br /> Ethylbenzene 00402 0 0050 i; 00455 ND 88 65-135 1 20 <br /> Xylenes(total) 0 195 0 0050 0 222 000063 88 65-135 1 20 <br /> Surrogate aaa-Trifluorotoluene 0 268 0 300 89 65-135 <br /> Surrogate 4-Bromofluorobenzene 0 253 0 300 84 65-135 i <br /> } <br /> Sequoia Analytical-Petaluma 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 /> Page 5 of 7 <br />