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0 <br />Alpha VAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 37 of 68 <br />URS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Attn: Chani Leimbach <br />Order Number <br />07JO347 <br />Receipt Date/Time Client Code <br />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 A371206 - VOAs in Water GCMS <br />LCS (AJ71206-BSI) <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />1,2-Dichloropropane <br />10.7 <br />0.50 <br />10.0 <br />107 <br />82-112 <br />1,3-Dichloropropme <br />10.4 <br />0.50 <br />10.0 <br />104 <br />83-116 <br />2,2-Dichloropropane <br />7.55 <br />10.9 <br />0.50 <br />0.50 <br />10.0 <br />10.0 <br />75.5 <br />109 <br />80-125 <br />86-116 <br />QL-03 <br />•1,1-Dichloropropene <br />cis-1,3-Dichioropropme <br />10.4 <br />0.50 <br />10.0 <br />104 <br />85-116 <br />trans-l;3-Dichloropropene <br />9.45 <br />0.50 <br />10.0 <br />94.5 <br />76-115 <br />Ethylbenzene <br />10.8 <br />0.50 <br />10.0 <br />108 <br />84-122 <br />Hesachlorobutadiene <br />8.07 <br />0.50 <br />10.0 <br />80.7 <br />70-144 <br />Isopropylbenzene <br />9.88 <br />0.50 <br />10.0 <br />98.8 <br />75-116 <br />p-Isopropyltalume <br />10.2 <br />0.50 <br />10.0 <br />102 <br />78-121 <br />Methyl ethyl ketone <br />23.3 <br />1.0 <br />20.0 <br />116 <br />69-136 <br />Methyl isobutyl ketone <br />25.2 <br />1.0 <br />20.0 <br />126 <br />76-119 <br />QL-03 <br />Methyl tert-butyl ether <br />11.5 <br />0.50 <br />10.0 <br />115 <br />88-121 <br />Methylene chloride <br />11.4 <br />0.50 <br />10.0 <br />114 <br />79-130 <br />Naphthalene <br />12.8 <br />0.50 <br />10.0 <br />128 <br />86-127 <br />QL-03 <br />n-Propylbenzene <br />11.0 <br />0.50 <br />10.0 <br />110 <br />75-127 <br />Styrene <br />11.3 <br />0.50 <br />10.0 <br />113 <br />80-125 <br />1,1,1,2 -Tetrachloroethane <br />10.6 <br />0.50 <br />10.0 <br />106 <br />79-118 <br />1,1,2,2 -Tetrachloroethane <br />10.6 <br />0.50 <br />10.0 <br />106 <br />81-112 <br />Tetrachloroethene <br />9.72 <br />0.50 <br />10.0 <br />97.2 <br />80-127 <br />Toluene <br />10.7 <br />0.30 n <br />10.0 <br />107 <br />76-137 <br />1,2,3-Trichlorobeazene <br />12.0 <br />.0.50 <br />10.0 <br />120 <br />84-128 <br />1,2,4-Trichlorobemene <br />11.1 <br />0.50 <br />10.0 <br />111 <br />85-123 <br />1,1,1 -Trichloroethane <br />10.4 <br />0.50 <br />10.0 <br />104 <br />86-117 <br />1,1,2 -Trichloroethane <br />10.3 <br />0.50 <br />10.0 <br />103 <br />83-115 <br />The results in this report apply to the samples analyzed in accordance with the chairs <br />ojcustody donement. This analytical report must he reproduced in its entirety. • <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 />