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G <br />Alpha VAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 48 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 />07JO347 10/06/200713:00 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 0/.RFC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71626 - VOAs in Water GCMS <br />LCS (AJ71626-BS1) <br />Prepared & Analyzed: <br />10/15/07 <br />1,3 -Dichlorobenzene <br />10.4 <br />0.50 <br />10.0 <br />104 <br />80-120 <br />1,4 -Dichlorobenzene <br />10.0 <br />0.50 <br />10.0 <br />100 <br />85-114 <br />Dichlorodifluoromethane <br />9.71 <br />0.50 <br />10.0 <br />97.1 <br />66-169 <br />1, loroethane <br />9.27 <br />0.50 <br />" <br />10.0 <br />92.7 <br />86-116 <br />1�- oroethane <br />8.86 <br />0.50 <br />10.0 <br />88.6 <br />77-115 <br />1,1-Dichlwoethene <br />9.68 <br />0.50 <br />10.0 <br />96.8 <br />81-139 <br />cis-1,2-Dichloroetbme <br />9.60 <br />0.50 <br />10.0 <br />96.0 <br />90-120 <br />trans-1,2-Dichlorcethene <br />926 <br />0.50 <br />10.0 <br />92.6 <br />90-120 <br />1,2-Dichlompropme <br />9.53 <br />0.50 <br />10.0 <br />95.3 <br />82-112 <br />1,3-Dichlwopropane <br />10.4 <br />0.50 <br />10.0 <br />104 <br />83-116 <br />2,2-Dichloropropane <br />8.91 <br />0.50 <br />10.0 <br />89.1 <br />80-125 <br />1,1-Dichloropropene <br />9.42 <br />0.50 <br />" <br />10.0 <br />942 <br />86-116 <br />cis-1,3-Dichlompropme <br />10.1 <br />0.50 <br />10.0 <br />101 <br />85-116 <br />trans-1,3-Dichloropropene <br />8.73 <br />0.50 <br />10.0 <br />87.3 <br />76-115 <br />Ethylbenzene <br />11.0 <br />0.50 <br />10.0 <br />110 <br />84-122 <br />Hexachlombutadiene <br />10.3 <br />0.50 <br />10.0 <br />103 <br />70-144 <br />lsopropylbenzene <br />10.2 <br />0.50 <br />10.0 <br />102 <br />75-116 <br />p-Isopropyltolume <br />11.1 <br />0.50 <br />10.0 <br />111 <br />78-121 <br />Methyl ethyl ketone <br />25.7 <br />1.0 <br />20.0 <br />128 <br />69-136 <br />Methyl isobutyl ketone <br />19.8 <br />1.0 <br />20.0 <br />99.0 <br />76-119 <br />Methyl tert-butyl ether <br />9.65 <br />0.50 <br />10.0 <br />96.5 <br />88-121 <br />Methylene chloride <br />10.4 <br />. 0.50 <br />10.0 <br />104 <br />79-130 <br />Naphthalene <br />10.7 <br />0.50 <br />10.0 <br />107 <br />86-127 <br />n-Propylbeazene <br />10.7 <br />0.50 <br />10.0 <br />107 <br />75-127 <br />Styrene <br />11.3 <br />0.50 <br />10.0 <br />113 <br />80-125 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />ofd document. document. This analytical report must be reproduced in its entirety. <br />s <br />Bruce Gave 10122/2007 <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 />