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n <br />u <br />Alpha VAnalytical Laboratories Inc. <br />e-mail: <br />clientservicesCo3alpha-labs.com <br />CHEMICAL EXAMINATION <br />REPORT <br />URS Corp - Sac <br />Page 38 of 68 <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Report Date: <br />10/22/07 07:24 <br />Attn: Chani Leimbach <br />Project No: <br />18600251.02041 <br />Project ID: <br />DTSC FMS24 Phase 2 <br />Order Number Receipt Date/I'ime <br />Client <br />Code <br />0770347 <br />10/06/2007 <br />13:00 <br />Client PO/Reference, <br />URS -SAC <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Analyte(s) <br />Result <br />PQL Units <br />Spike <br />Level <br />Source "/oREC RPD <br />Result %REC Limits <br />Batch AJ71206 - VOAs in Water GCMS <br />RPD Limit Flag <br />LCS AJ71206-BSl <br />Trichloroethene <br />ared: 10/10/07 Anal <br />Pre P Analyzed: 10/11/07 <br />Trichlorofluoromethane <br />101 <br />10.6 <br />0.50 <br />10.0 <br />101 <br />84-114 <br />Tric otafluoroethane <br />9.77 <br />0.50 " <br />10.0 <br />106 <br />74-130 <br />1,2 hloropropane <br />10.7 <br />0.50 ^ <br />9.84 <br />99.3 <br />87-121 <br />1,2,4- rimethylbenzene <br />0.50 <br />10.0 <br />107 <br />78-112 <br />1,3,5-Trimethylbenzene <br />11.4 <br />11.0 <br />0.50 " <br />10.0 <br />114 <br />83-127 <br />Vinyl chloride <br />12.3 <br />0.50 ^ <br />10.0 <br />110 <br />82-124 <br />m,p-Xylene <br />21.2 <br />0.50 ^ <br />10.0 <br />123 <br />61-140 <br />o -Xylene <br />108 <br />0.50 ^ <br />20.0 <br />106 <br />81-124 <br />X <br />xylenes (total) <br />32.0 <br />0.50 <br />10.0 <br />108 <br />80-126 <br />Surrogate: Dibromajluoromethane <br />0.50 ^ <br />30.0 <br />107 <br />81-126 <br />Surrogate: Toluene -d8 <br />21.2 <br />„ <br />25.0 <br />84.8 <br />61-105 <br />Surrogate: BromoJiuorobenzene <br />23.6 <br />„ <br />25.0 <br />69-115 <br />30.6 <br />" <br />25.0 <br />122 122 <br />75-726 <br />Matrix Spike AJ71206-MSI <br />Acetone <br />Source: 07JO309-01 <br />Prepared: <br />10/10/07 Analyzed: 10/11/07 <br />Benzene <br />42.7 <br />5.0 ug/I <br />39.4 <br />ND 108 <br />40-147 <br />Brumobenzene <br />11.0 <br />11.2 <br />0.30 <br />10.0 <br />ND 110 <br />57-141 <br />Bromochloromethane <br />11. <br />0.50 ^ <br />10.0 <br />ND 112 <br />65-135 <br />Bromodichloromethane <br />11.66 <br />0.50 <br />10.0 <br />ND 116 <br />69-131 <br />Bromoform <br />0.50 ^ <br />10.0 <br />ND 116 <br />62-14011.3 <br />Bromomethanc <br />12.2 <br />0.50 " <br />10.0 <br />ND 113 <br />55-151 <br />o-Butylbenzene <br />10.9 <br />0.50 <br />10.0 <br />ND 122 <br />43-162 <br />sec-Butylbenzene <br />11.8 <br />0.50 <br />10.0 <br />ND 109 <br />74-138 <br />tert-Butylbenzene <br />11.2 <br />0.50 <br />10.0 <br />ND 118 <br />78-145 <br />0.50 " <br />10.0 <br />ND 112 <br />71-139 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />Of <br />W document. This analytical report must be reproduced in its entirety. <br />Bruce Gove i <br />Corporate: 208 Mason St., Ukiah, CA 95482 • Phone: (707) Laboratory 1Director 0/22/2007 <br />0401 9 Fax: (707) 468-5267 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA 94568 • Phone: (925) 828-6226 • Fax: (925) 828-6309 <br />