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is <br />Alpha PAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Pate 66 of 68 <br />URS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Atlas: Chani Leimbach <br />Order Number Receipt DateMme Client Code <br />0710347 10/06/2007 13:00 URS -SAC <br />Report Date: 10/22/07 07:24 <br />Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71704 - VOAs in Soil GCMS <br />Matrix Spike Dup (AJ71704-MSDI) <br />Source: 07JO507-01 <br />Prepared & Analyzed: 10/16/07 <br />86.5 <br />69-134 <br />Toluene <br />0.0154 <br />0.0050 <br />96.6 <br />0.0237 <br />ND <br />65.0 <br />33-148 <br />1.29 <br />25 <br />1,2,3-Trichlorobenzene <br />0.00732 <br />0.0050 <br />0.0237 <br />ND <br />30.9 <br />0-166 <br />24.7 <br />25 <br />1,2,4- richlorobenzent <br />0.00754 <br />0.0050 <br />0.0237 <br />ND <br />31.8 <br />0-172 <br />23.8 <br />25 - <br />1,1 hloroethane <br />0.0183 <br />0.0050 <br />0.0237 <br />ND <br />77.2 <br />39-154 <br />2.70 <br />25 <br />1,1,2- richloroethane <br />0.0147 <br />0.00500.0237 <br />ND <br />62.0 <br />55-130 <br />7.21 <br />25 <br />Trichloroethene <br />0.0178 <br />0.0050 <br />0.0237 <br />ND <br />75.1 <br />38-143 <br />16.0 <br />25 <br />Trichlorofluoromethane <br />0.0177 <br />0.0050 <br />0.0237 <br />ND <br />74.7 <br />40-149 <br />18.5 <br />25 <br />Trichlorotrifluomethme <br />0.0174 <br />0.0050 <br />0.0233 <br />ND <br />74.7 <br />29-150 <br />0.573 <br />25 <br />1,2,3 Thchlompropme <br />0.0123 <br />0.0050 <br />0.0237 <br />ND <br />51.9 <br />50-121 <br />19.8 <br />25 <br />1,2,4-Trimethylbenzene <br />0.0127 <br />0.0050 <br />0.0237 <br />ND <br />53.6 <br />10-169 <br />8.30 <br />25 <br />1,3,5-Trimethylbenzene <br />0.0131 <br />0.0050 <br />0.0237 <br />ND <br />55.3 <br />25-155 <br />5.93 <br />25 <br />Vinyl chloride <br />0.0216 <br />0.0050 <br />0.0237 <br />ND <br />91.1 <br />44-149 <br />4.74 <br />25 <br />m,p-Xylene <br />0.161 <br />0.0050 <br />0.0474 <br />0.16 <br />2.11 <br />15-162 <br />21.3 <br />25 QM -05 <br />o -Xylene <br />0.0687 <br />0.0050 <br />0.0237 <br />0.061 <br />32.5 <br />22-157 <br />22.5 <br />25 <br />Xylenes (total) <br />0.230 <br />0.0050 <br />0.0711 <br />0.22 <br />14.1 <br />14-158 <br />21.7 <br />25 <br />Surrogate: Bromofluorobenzene <br />0.0205 <br />0.0237 <br />86.5 <br />69-134 <br />Surrogate: Dibromofluoromethane <br />0.0229 <br />0.0237 <br />96.6 <br />63-124 <br />Surrogate: Toluene -d8 <br />0.0248 <br />0.0237 <br />105 <br />66-135 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of * document. This analytical report must be reproduced in its entirety. <br />-6(µ-tib. 4�_ <br />Bruce <br />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 />