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n <br />U <br />Alpha VAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />URS Corp -Sac CHEMICAL EXAMINATION REPORT Page 30 of 68 <br />2870 Gateway Oaks Dr., Suite 300 Report Date: 10/22/07 07:24 <br />Sacramento, CA 95833 Project No: 18600251.02041 <br />Attn: Chani Leimbach Project ID: DTSC FMS24 Phase 2 <br />Order Number <br />Receipt DateiTTime <br />Client Code Client PO/Reference <br />0770347 <br />10/06/2007 13:00 <br />URS -SAC <br />TPH by EPA/LUFT GC/GCMS Methods - Quality Control <br />Analyte(s) <br />Result <br />PQL Units <br />Spike Source %REC RPD <br />Level Result %REC Limits <br />RPD Limit Flag <br />Batch AJ71201- VOAs in Water GCMS <br />Blank (AJ71201-BLK1) <br />Prepared 10/10/07 Analyzed• 10/11/07 <br />TPH as Gasoline <br />ND <br />50 ug/1 <br />Surrogate: Toluene -d8 <br />24.5 <br />25.0 98.0 69-115 <br />L4&J71201-BSI) <br />------- <br />T?FMGasolinc <br />195 <br />50 ug/l <br />200 97.5 68-127 <br />Surrogate: Toluene -d8 <br />25.3 <br />25.0 101 69-115 <br />Matrix Spike (AJ71201-MS1) <br />Source: 07JO258-01 <br />Prepared: 10/10/07 Analyzed 10/11/07 <br />TPH as Gasoline <br />107 <br />50 ug/l <br />200 ND 53.5 37-156 <br />Surrogate: Toluene -d8 <br />24.8 <br />25.0 99.2 69-115 <br />Matrix Spike Dup (AJ71201-MSD1) Source: 07JO258-01 <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as Gasoline <br />130 <br />50 ug/l <br />200 ND 65.0 37-156 19.4 20 <br />Surrogate: Toluene -d8 <br />24.7 <br />15.0 98.8 69-115 <br />Batch AJ71538 - SVOAs in <br />Water GC <br />Blank (AJ71538-BLK1)Prepared• <br />10!15/07 Analyzed 10/16/07 <br />TPH as Diesel <br />ND <br />50 ug/l <br />Surrogate: Tetratetracontane <br />99.6 <br />78.0 128 20-152 <br />LCS (AJ71538-BSI) <br />Prepared 10/15/07 Analyzed 10/16/07 <br />TPH as Diesel <br />1660 <br />50 ug/l <br />2010 82.6 52-136 <br />Surrogate: Tetratetracontane <br />117 <br />78.0 150 20-152 <br />LCS Dup (AJ71538-BSD!) <br />Prepared 10/15/07 Analyzed 10/16/07 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />aIf dy donsment. This analytical report must be reproduced in its entwery. <br />Bruce Gove 10/22/2007 <br />Corporate: 208 Mason St., Ukiah, CA 95482 •PhoneLaboratory Director : (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 />