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0 <br />Alpha PAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Pate 35 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: <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 />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Spike Source °/nREC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71206 - VOAs in water GCMS <br />Blank (AJ71206-BLKI) <br />21.8 <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />Toluene <br />ND <br />0.30 " <br />1,2,3-Trichlorobenzene <br />ND <br />0.50 <br />1,2,4-Trichlorobenzeae <br />ND <br />0.50 <br />1,1,1 -Trichloroethane <br />ND <br />0.50 " <br />• <br />1,1,2 -Trichloroethane <br />ND <br />0.50 " <br />Trichloroethene <br />ND <br />0.50 " <br />Trichlorofluoromethane <br />ND <br />0.50 " <br />Trichlorotrifluoroethme <br />ND <br />0.50 " <br />1,2,3-Trichloropropne <br />ND <br />0.50 <br />1,2,4-Trimethylbenzene <br />ND <br />0.50 " <br />1,3,5-Trimethylbenzene <br />ND <br />0.50 " <br />Vinyl chloride <br />ND <br />0.50 " <br />m,p-Xylene <br />ND <br />0.50 " <br />o -Xylene <br />ND <br />0.50 " <br />Xylenes (total) <br />ND <br />0.50 " <br />Surrogate: Dibromofluoromethane <br />21.8 <br />25.0 <br />87.2 <br />61-105 <br />Surrogate: Toluene -d8 <br />24.5 <br />25.0 <br />98.0 <br />69-115 <br />Surrogate: Bromofluorobenzene <br />31.0 <br />25.0 <br />124 <br />75-126 <br />LCS (AJ71206-BSI) <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />Acetone <br />442 <br />5.0 ug/l <br />39.4 112 69-145 <br />Benzene <br />10.6 <br />0.30 <br />10.0 106 85-116 <br />Bromobermne <br />11.0 <br />0.50 <br />10.0 110 83-120 <br />Bromocldoromethane <br />11.0 <br />0.50 <br />10.0 110 86-115 <br />Bromodichloromethane <br />11.0 <br />0.50 <br />10.0 110 87-118 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of custody document. This analytical report must bereproduced in its entirety. - 4�-- • <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 9 Phone: (925) 828-6226 • Fax: (925) 828-6309 <br />