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Alpha VAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Paize 25 of 50 <br />URS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Attn: Chani Leimbach <br />Order Number Receipt Date/Time Client Code <br />07J0352 10/06/2007 13:00 URS -SAC <br />Report Date: 10/22/07 07:09 <br />Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <br />TPH by EPA/I_,UFT GC/GCMS Methods - QuaIity Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units level Result °/oREC Limits RPD Limit Flag <br />Batch AJ71201 - VOAs in Water GCMS <br />Blank (AJ71201-BLKI) Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as Gasoline ND 50 Ug/1 -.__-- <br />Surrogate: Toluene -d8 24.5 " .25.0 98.0 69-115 <br />'LCS (AJ71201-BSI) - Prepared: 10/10107- Analyzed: 10111/07 <br />TPH as Gasoline 195 50 ug/1 200 97.5 68-127 <br />Surrogate: Toluene -d8 25.3 " 25.0 101 69-115 <br />Matrix Spike (AJ71201-MSI) Source: 07JO258-01 Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as'GasoUne 107 50 ug/1 200 ND 53.5 37-I56 <br />Surrogate: Toluene -d8 24.8 25.0 99.2 69-115 <br />Matrix Spike Dup (AJ71201-MSD1) Source: 07JO258-01 _Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as Gasoline 130 50 ugll y 200 ND 65.0 37-156 19.4 20 <br />Surrogate: Toluene -d8 24.7 <br />Batch AJ71614 - EPA 5030 Soil GC <br />25.0 98.8 69-115 <br />Blank (AJ71614-BLKI). - Prepared & Analyzed: 10/16/07 <br />TPH as Gasoline ND 1.0 mg/kg <br />Surrogate: 1,4 Bromgjluorobenzene 3.08 4.00 77.0 60-156 <br />LCS (AJ71614-BSI) Prepared: 10/16/07 Analyzed: 10/17/07 <br />TPH as Gasoline 27.8 1.0 mg/kg 21.4 130 70-130 <br />Surrogate: 1,4 Bromofluorobenzene 4.10 4.00 102 60-156 <br />Matrix Spike (AJ71614-MSI) Source: 07JO347-17 Prepared & Analyzed: 10/16/07 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of custody document. This analytical report must be reproduced in its entirety. —6 <br />Bruce Gove 10/22/2007 <br />Laboratory Director <br />Corporate: 208 Mason St., Ukiah, CA 95482 - Phone: (707) 468-0401 - Fax: (707) 468-5267 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA 94568 - Phone: (925) 828-6226 - Fax: (925) 828-6309 <br />