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Alpha VAnalytical Laboratories Inc. <br />e-mail: c ientservices®alpha-labs.COm <br />URS Corp -Sac CHEMICAL EXAMINATION REPORT <br />2870 Gateway Oaks Dr., Suite 300 Report Date: 10/22/07 07:09 <br />Sacramento, CA 95833 Project No: 18600251.02041 <br />Attn: Chani Leimbach Project ID: DTSC FMS24 Phase 2 <br />Order Number Receipt Datefrime <br />07JO352 Client Code Client PO/Reference <br />10/06/2007 13:00 URS -SAC <br />TPH by EPA/LUFT GC/GCMS Methods - Quality Control <br />Analyte(s)Spike Source a/4REC <br />Result PQL Units Level Result •/aREC Limits RpD <br />Batch AJ71614 - EPA 5o3o Soil GC <br />TPH as Gasoline 26.0 <br />Surrogate: l,4-Bromofluorobemene 3.86 <br />TPH as Gasoline 25.7 <br />Surrogate: 44-Bromofluorobemem 4.21 <br />Batch AJ71623 - CA LUFT - orb shaker <br />TPH as Diesel <br />Surrogate: Tetratetracontane <br />TPH as Diesel <br />Surrogate: Tetratetracontane <br />TPH as Diesel <br />Surrogate: Tetratetracontone <br />TPH as Diesel <br />Surrogate: Tetratetraeontane <br />47-17 Prepared & Anal <br />m8/kg 19.9 ND <br />3.72 <br />1.10347-17 Prepared & Anal <br />1.0 mg/kg 19.9 ND <br />3.72 <br />ND 1.0 mg/kg <br />1.29 1.45 <br />2.04 <br />Prepared & <br />1.0 mg/kg 40.3 <br />1.45 <br />33.9 1.0 mg/kg <br />2.06 <br />34.5 1.0 mg/kg <br />2.02 <br />40.3 ND <br />1.45 <br />:pared & An <br />40.3 ND <br />1.45 <br />RPD <br />I imir <br />128 65-161 <br />104 60-156 <br />10/16/07 <br />126 65-161 1.16 25 <br />113 60-156 <br />10/16/07 <br />89.0 20-152 <br />aa.Y 63-126 <br />141 20-152 <br />10/16/07 <br />84.1 61-134 <br />142 20-152 <br />85.6 61-134 1.75 20 <br />139 20-152 <br />0 <br />Page 26 of 50 <br />Flag <br />The results in this report apply to the samples anolyred in accordance with the chain <br />of custody document This analytical report must be reproduced in its entirety. <br />Bruce Gove Director 10/22/2007 <br />Corporate: 208 Mason St., Ukiah, CA 95482 • Phonei bora or 0401 <br />Service Center: 6398 Dougherty Rd., Suite 368-5267 <br />, Dublin, CA 94568 • Phone: (925) 828-622607 Fax: (925) 828-6309 <br />