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0 <br />Alpha VAnallytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT <br />Page 47 of 68 <br />URS Corp -Sac <br />2870 Gateway Oaks Dr., Suite 300 <br />Report Date: <br />10/22/07 07:24 <br />Sacramento, CA 95833 <br />Project No: <br />18600251.02041 <br />Attn: Chani Leimbach <br />Project ID: <br />DTSC FMS24 Phase 2 <br />Order Number Receipt DatelTime <br />Client <br />Code <br />Client PO/Reference <br />07JO347 10/06/2007 13:00 <br />URS -SAC <br />Volatile Organic Compounds by EPA <br />Method 8260B - Quality Control <br />Spike Source <br />"/•REC RPD <br />Analyte(s) Result <br />PQL Units <br />Level Result %REC Limits RPD Limit <br />Flag <br />Batch AJ71626 - VOAs in water GCMS <br />Blank (AJ71626-BLK1) <br />Prepared & Analyzed: 10/15/07 <br />Surrogate: Bromo luorobenzene 30.7 <br />25.0 123 <br />75-126 <br />LCS AJ71626-BS1 <br />Prepared & Analyzed: 10/15/07 <br />Acetone 49.7 <br />5.0 ug4 <br />39.4 126 <br />69-145 <br />Benzene 9.40 <br />0.30 <br />10.0 94.0 <br />85-116 <br />Bromobenzene 11.0 <br />0.50 <br />10.0 110 <br />83-120 <br />Bromochloromethme 9.69 <br />0.50 <br />10.0 96.9 <br />86-115 <br />Bromodichloromethme 920 <br />0.50 <br />10.0 92.0 <br />87-118 <br />Bromoform 10.8 <br />0.50 <br />10.0 108 <br />79-132 <br />Bromomethene 8.95 <br />0.50 <br />10.0 89.5 <br />69-145 <br />n-Butylbeamoe 10.4 <br />0.50 <br />10.0 104 <br />79-132 <br />sec,Butylbenzene 11.5 <br />0.50 <br />10.0 115 <br />86.132 <br />ten-Butylbenzene 10.9 <br />0.50 <br />10.0 109 <br />82-126 <br />Carbon tetrachloride 8.54 <br />0.50 <br />10.0 85.4 <br />82-128 <br />Chlorobenzene 10.4 <br />0.50 <br />10.0 104 <br />84-114 <br />Chloroethane 8.54 <br />0.50 <br />10.0 85.4 <br />68-133 <br />Chloroform 9.06 <br />0.50 <br />10.0 90.6 <br />83-114 <br />Chloromethane 9.30 <br />0.50 <br />10.0 93.0 <br />71-141 <br />2-Chlorotoluene 11.5 <br />0.50 " <br />10.0 115 <br />78-130 <br />4-Chlomtoluene 10.9 <br />0.50 <br />10.0 109 <br />80-122 <br />Dibromochloromethane 10.6 <br />0.50 <br />10.0 106 <br />81-124 <br />1,2-Dibromo-3-chloropropane 8.61 <br />.0.50 <br />10.0 86.1 <br />74-124 <br />1,2-Dibromoethane (EDB) 10.3 <br />0.50 <br />10.0 103 <br />80-118 <br />Dibromomethane 9.16 <br />0.50 <br />10.0 91.6 <br />82-116 <br />1,2 -Dichlorobenzene 10.1 <br />0.50 <br />10.0 101 <br />86-115 <br />The in report apply the samples analysed in withthe chain <br />/fes'_ <br />uc d in <br />ttody m t <br />of custody document This analytical report must be reproduced in <br />its ir <br />tts erutrety. <br />1 / �� <br />(_ pl/// <br />0 <br />Bruce Gove <br />10/22/2007 <br />Corporate: 208 Mason St., Ukiah, CA 95482 • <br />Laboratory Director <br />Phone: (707) 468-0401 • Fax: (707) 468-5267 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA <br />94568 • Phone: (925) 828-6226 • Fax: (925) 828-6309 <br />