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Alpha VAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CHETVHCAL EXAMINATION 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 Date/Time Client Code <br />0710347 10/06/2007 13:00 URS -SAC <br />Report Date: 10/22/07 07:24 <br />Proj ect No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <br />TPH by EPA/LUFT GC/GCMS Methods - Quality Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71538 - SVOAs in Water GC <br />LCS Dup (AJ71538-BSD/) Prepared: 10/15/07 Analyzed: 10/16/07 _ <br />TPH as Diesel 1780 50 ugll 2010 88.6 52-136 6.98 25 <br />Surrogate: Tetratetracontane 116 <br />Batch AJ71614 - EPA 5030 Soil GC <br />78.0 149 20-152 <br />Blank (AJ71614-BLK1) _ _ Prepared & Analyzed: 10/16/07 <br />TPH as Gasoline ND 1.0 mg/kg <br />Surrogate: 1,4 Bromofluorobenzene 3.08 " 4.00 77.0 60-156 <br />LCS (AJ71614-BSI) _ Prepared: 10/16/07 Analyzed: 10/I7107 - - - <br />TPH as Gasoline 27.8 1.0 mg/kg 21A 130 70-130 <br />Surrogate:l,4-Bromoliuorobenzene 4.10 " 4.00 102 60-156 <br />Matrix Spike (AJ71614-M51)_ _ 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 Bromojluorobenzene 3.86 3.72 104 60-156 <br />Matrix Spike Dui (A._171614-MSDI) 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 w <br />Surrogate: 1,4 Bromofluorobenzene 4.21 <br />Batch AJ71623 - CA LUFT - orb shaker <br />3.72 113 60-156 <br />Blank (AJ71623-BLK1) Prepared & Analyzed: 10/16/07 <br />TPH as Diesel ND �1.0 mg/kg <br />Surrogate: Tetratetracontane 1.29 1.45 89.0 20-152 <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. <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 />