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11 <br />Alpha PAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 40 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 °/dREC RPD <br />Analyte(s) Result PQL Units Level Result a/oREC Limits RPD Limit Flag <br />Batch AJ71206 - VOAs in Water GCMS <br />Matrix Spike (AJ71206-MSI) <br />Source: 07J0309-01 <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />trans-1,3-Dichlompropene <br />9.85 <br />0.50 <br />10.0 <br />ND <br />98.5 <br />55-126 <br />Ethylbenzene <br />11.0 <br />0.50 <br />10.0 <br />ND <br />110 <br />48-153 <br />Hexachlorobutadiene <br />9.53 <br />0.50 <br />10.0 <br />ND <br />95.3 <br />70-147 <br />Islbenzene <br />10.1 <br />0.50 <br />10.0 <br />ND <br />101 <br />65-128 <br />pdso ropyholuehe <br />10.7 <br />0.50 <br />10.0 <br />ND <br />107 <br />70.132 <br />Methyl ethyl ketone <br />23.0 <br />1.0 <br />20.0 <br />ND <br />115 <br />62-126 <br />Methyl nobutyl ketone <br />24.9 <br />1.0 <br />20.0 <br />ND <br />124 <br />66-127 <br />Methyl tert-butyl ether <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />55.144" <br />Methylene chloride <br />11.3 <br />0.50 <br />10.0 <br />ND <br />113 <br />60-137 <br />Naphthalene <br />13.4 <br />0.50 <br />10.0 <br />ND <br />134 <br />64-143 <br />n-Propylbenzene <br />11.6 <br />0.50 <br />10.0 <br />ND <br />116 <br />66-138 <br />Styrene <br />10.9 <br />0.50 <br />10.0 <br />ND <br />109 <br />36.162 <br />1,1,1,2-Tetrach1oroethane <br />10.6 <br />0.50 <br />10.0 <br />ND <br />106 <br />56-137 <br />1,1,2,2 -Tetrachloroethane <br />10.8 <br />0.50 <br />10.0 <br />ND <br />108 <br />63-121 <br />Tetrachloroethene <br />10.7 <br />0.50 <br />10.0 <br />ND <br />107 <br />49-148 <br />Toluene <br />10.9 <br />0.30 <br />10.0 <br />ND <br />109 <br />56-147 <br />1,2,3-Trichlorobenzene <br />12.6 <br />0.50 <br />10.0 <br />ND <br />126 <br />60-143 <br />1,2,4-Trichlorobenzene <br />11.7 <br />0.50 <br />10.0 <br />ND <br />117 <br />65-134 <br />1,1,1 -Trichloroethane <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />62-144 <br />1,1,2 -Trichloroethane <br />10.3 <br />0.50 <br />10.0 <br />ND <br />103 <br />62-129 <br />Trichloroethene <br />10.7 <br />0.50 <br />10.0 <br />ND <br />107 <br />58-140 <br />Trichlorofluoromethane <br />11.4 <br />.0.50 <br />10.0 <br />ND <br />114 <br />65-143 <br />Trichlorotnfluoroethme <br />10.3 <br />0.50 <br />9.84 <br />ND <br />105 <br />72-135 <br />1,2,3-Trichloropropane <br />10.3 <br />0.50 <br />10.0 <br />ND <br />103 <br />65-120 <br />1,2,4-Trimethylbenzene <br />11.7 <br />0.50 <br />10.0 <br />ND <br />117 <br />71-138 <br />The results to this report apply to the samples analyzed in accordance with the chain <br />of dy document. This analytical report must be reproduced in its entirety. -3 <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 />