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Alpha 1 Analytical Laboratories Inc. e-mail, clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 46 of 50 <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 />07JO352 10/06/2007 13:00 URS -SAC <br />Report Date: 10/22/07 07:09 <br />Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <br />Volatile Organic Compounds by EPA Method 8260D - 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 S ike AJ71704-MSl <br />Source: 07JO507-01 <br />Prepared & Analyzed: 10/16/07 <br />88.3 <br />1,2,4-Trichlorobenzene <br />0.00958 <br />0.0050 <br />0.0231 <br />ND <br />41.5 <br />0-172 <br />0.0235 <br />1,1,I -Trichloroethane <br />0.0188 <br />0.0050 <br />0.0231 <br />ND <br />81.4 <br />39-154 <br />ND <br />1,1,2 Trichloroethane <br />0.0158 <br />0.0050 <br />0.0231 <br />ND <br />68.4 <br />55-130 <br />0.0237 <br />Trichloroethene <br />0.0209 <br />0.0050 <br />0.0231 <br />ND <br />90.5 <br />38-143 <br />0:0050 <br />Trichlorofluoromethane <br />0.0147 <br />0.0050 <br />0.0231 <br />ND <br />63.6 <br />40-149 <br />0.0163 <br />Trichlorotrifluoroethane <br />0.0175 <br />0.0050 <br />0.0227 <br />ND <br />77.1 <br />29-150 <br />Bromoform <br />I,2,3-Trichloropropane <br />0.0150 <br />0.0050 <br />0.0231 <br />ND <br />64.9 <br />50-121 <br />25 <br />1,2,4-Trimethylbenzene <br />0.0138 <br />0.0050 <br />0.0231 <br />ND <br />59.7 <br />10-169 <br />14,2 <br />I,3,5-Trimethylbenzene <br />0.0139 <br />0.0050 <br />0.0231 <br />ND <br />60.2 <br />25-155 <br />Vinyl chloride <br />0.0206 <br />0.0050 <br />0.0231 <br />ND <br />89.2 <br />44149 <br />m,p-Xylene <br />0.130 <br />0.0050 <br />0.0461 <br />0.16 <br />NR <br />15-162 <br />QM -05 <br />o -Xylene <br />0.0548 <br />0.0050 <br />0.0231 <br />0.061 <br />NR <br />22-I57 <br />QM -05 <br />Xylenes (total) <br />0.185 <br />0.0050 <br />0.0692 <br />0.22 <br />NR <br />14-158 <br />QM -05 <br />Surrogate: Bromofluorobenzene <br />0.0204 <br />0.0231 <br />88.3 <br />69-134 <br />Surrogate: Dibromofluoromethane <br />0.0208 <br />0.0231 <br />90.0 <br />63-124 <br />Surrogate: Toluene -d8 <br />0.0235 <br />0.0231 <br />102 <br />66-135 <br />Matrix Spike Dup (AJ71704-MSD1) <br />Source: 07JO507-01 <br />Prepared & Analyzed: 10/16/07 <br />Acetone <br />0.211 <br />0.020 mg/kg <br />0.0934 <br />0,090 <br />130 <br />0-181 <br />1.91 <br />25 <br />Benzene <br />0.0169 <br />0.0050 <br />0.0237 <br />ND <br />71.3 <br />29-145 <br />2.34 <br />25 <br />Bromobenzene <br />0.0106 <br />0.0050 <br />0.0237 <br />ND <br />44.7 <br />31-144 <br />15.7 <br />25 <br />Bromochloromethane <br />M162 <br />0:0050 <br />0.0237 <br />ND <br />68.4 <br />58-129 <br />5.41 <br />25 <br />Bromodichloromethane <br />0.0163 <br />0.0050 <br />0.0237 <br />ND <br />68.8 <br />34-160 <br />9.36 <br />25 <br />Bromoform <br />0.0111 <br />0.0050 <br />0.0237 <br />ND <br />46.8 <br />22-166 <br />18.8 <br />25 <br />Bromomethane <br />0.0203 <br />0.0050 <br />0.0237 <br />ND <br />85.7 <br />10-153 <br />14,2 <br />25 <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. -0 <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 />