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' Sequoia 1455 McDowellBlvd,North 4 9 n <br /> �'�..- q <br /> Analytical 54 <br /> 707)792-1865 <br /> FAX '707 labs 342 <br /> com <br /> www sequowlahs coin <br /> • <br /> URS Corp-Sacramento Project Arco Site 760,Lodi,CA P403600 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number G09JZ-0039 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 04/08/04 14 36 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B18021B - Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunit Notes <br /> Batch 4030839-EPA 5030B,waters <br /> Blank(4030839-BLK1) Prepared&Analyzed 03/30/04 <br /> Gasoline Range Organics(C6-C 10) ND 50 ug/l <br /> Surrogate a a a-Trifluorotoluene 300 n 300 100 65-135 <br /> Surrogate 4-Bromofluorobenzene 279 300 93 65-135 <br /> Laboratory Control Sample(4030839-BSI) Prepared&Analyzed 03/30/04 <br /> Gasoline Range Organics(C6-C10) 2550 50 ug/l 2750 93 65-135 <br /> Surrogate a a a-Tri luorololuene 356 300 119 65-135 <br /> Surrogate 4-Bromofluorobenzene 306 300 102 65-135 <br /> Matrix Spike(4030839-MSI) Source P403450-02 Prepared&Analyzed 03/30/04 <br /> Gasolme Range Organics(C6-C10) 2630 50 ug/l 2750 10 95 65-135 <br /> Surrogate a a a-Trifluorotoluene 358 300 119 65-135 <br /> Surrogate 4-Bromofluorobenzene 307 300 102 65-135 <br /> atnx Spike Dup(4030839-MSDI) Source P403450-02 Prepared&Analyzed 03/30/04 <br /> Gasoline Range Organics(C6-C10) 2490 50 ug/1 2750 10 90 65-135 5 20 <br /> Surrogate a a a-Trifluorotoluene 346 N' 300 115 65-135 <br /> Surrogate 4-Bromafluorobenzene 299 300 100 65-135 <br /> Batch 4030875-EPA 5030,soils _ <br /> Blank(4030875-BLKI) Prepared&Analyzed 03/30/04 <br /> Gasoline Range Organics(C6-C 10) ND 10 mg/kg <br /> Surrogate a a a-Trifluorotoluene 0 286 0 300 95 65-135 <br /> Surrogate 4-Bromofluorobenzene 0 270 0 300 90 65-135 <br /> Laboratog Control Sample(4030875-BSI) Prepared&Analyzed 03/30/04 <br /> Gasoline Range Organics(C6-C10) 236 10 mg/kg 275 86 65-135 <br /> Surrogate a a a-Trifluorotoluene 0 279 0 300 93 65-135 <br /> Surrogate 4-BromofJuorobenzene 0 270 0 300 90 65-135 <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 /> . 79its analytical report must be reproduced in its entirety <br /> Page 10 of 18 <br />