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0 <br />Alpha / Analytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EYCkM]NATION REPORT Page 31 of 68 <br />URS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Attn: Chani Leimbach <br />Order Number Receipt DatelTime Client Code <br />0710347 10/06/2007 13:00 URS -SAC <br />Report Date: <br />10/22/07 07:24 <br />Project No: <br />18600251.02041 <br />Project ID: <br />DTSC FMS24 Phase 2 <br />Client PO/Reference <br />TPH by EPA/LUFT GC/GCMS Methods - Quality Control <br />Spike Source a/6REC RPD <br />Analyte(s) Result PQL Units Level Result a/dtEC Limits RPD Limit Flag <br />Batch AJ71538 - SVOAs in Water GC <br />LCS Dup (071538-BSDI.) Prepared: 10/15/07 Analyzed: 10/16/07 <br />TPH as Diesel 1780 50 ug4 2010 88.6 52-136 6.98 25 <br />Surrogate: Tetratetracontane <br />Batch AJ71614 - EPA 5030 Soil GC <br />116 <br />78.0 149 20-152 <br />0 <br />Blank (AJ71614-BLK1) Prepared & Analyzed: 10/16/07 <br />TPH m Gasoline ND 1.0 mg/kg <br />Surrogate: 1,4-Bromofluorobenzene 3.08 <br />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-Bromo luorobemem 4.10 <br />4.00 102 60-156 <br />Matrix Spike (AJ71614-MS1) Source: 07JO347-17 Prepared & Analyzed: 10/16/07 <br />TPH as Gasoline 26.0 1.0 mg/kg 19.9 ND 128 65-161 <br />Surrogate: 1,4-Bromofluorobemene 3.86 <br />3.72 104 60-156 <br />Matrix Spike Dup (AJ71614-MSD1) Source: 07JO347-17 Prepared & Analyzed: 10/16/07 <br />TPH as Gasoline 25.7 1.0 mg/kg 19.9 ND 126 65-161 1.16 25 <br />Surrogate: 1,4-Bromof %torobemene 4.21 <br />3.72 113 60-156 <br />Batch AJ71623 - CA LUFT - orb shaker <br />Blank (AJ71623-BLKI) Prepared & Analyzed: 10/16/07 <br />TPH m Diesel ND 1.0 mg/kg <br />Surrogate: Tetrateiracomam <br />1.29 <br />1.45 89.0 20-151 <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 1022/2007 <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 />