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0 <br />Alpha VAnalytical Laboratories Inc. e-mail: chentservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 58 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 Datefrime Client Code <br />0710347 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 °/oREC RPD <br />Analyte(s) Result PQL Units Level Result °/d2EC Limits RPD Limit Flag <br />Batch AJ71704 - VOAs in Soil GCMS <br />Blank (AJ71704-BLK1) <br />0.0269 <br />Prepared & Analyzed: 10/16/07 <br />1,3,5-Trimethylbenzene <br />ND <br />0.0050 " <br />Vinyl chloride <br />ND <br />0.0050 " <br />MP -X leve <br />ND <br />0.0050 " <br />o- <br />ND <br />0.0050 " <br />Xyl (total) <br />ND <br />0.0050 " <br />Surrogate: Bromofluorobenzene <br />0.0269 <br />0.0250 <br />108 <br />69-134 <br />Surrogate: Dibromofluoromethane <br />0.0237 <br />0.0250 <br />94.8 <br />63-124 <br />Surrogate: Toluene -d8 <br />0.0282 <br />0.0250 <br />113 <br />66-135 <br />LCS (AJ71704-BSI) <br />Prepared & Analyzed: 10/16/07 <br />Acetone <br />0.128 <br />0.020 mg/kg <br />0.0985 <br />130 <br />52-140 <br />Benzene <br />0.0235 <br />0.0050 <br />0.0250 <br />94.0 <br />77-120 <br />Bromobenzene <br />0.0223 <br />0.0050 <br />0.0250 <br />89.2 <br />81-125 <br />Bromochloromethane <br />0.0236 <br />0.0050 <br />0.0250 <br />94.4 <br />84115 <br />Bromodichloromethane <br />0.0254 <br />0.0050 n <br />0.0250 <br />102 <br />78-137 <br />Bromoform <br />0.0229 <br />0.0050 <br />0.0250 <br />91.6 <br />73-154 <br />Bromomethane <br />0.0236 <br />0.0050 <br />0.0250 <br />94.4 <br />55-136 <br />n-Butylbenzene <br />0.0246 <br />0.0050 <br />0.0250 <br />98.4 <br />80-123 <br />sec-Butylbemene <br />0.0226 <br />0.0050 <br />0.0250 <br />90.4 <br />83-138 <br />tert-Butylbenzene <br />0.0227 <br />0.0050 <br />0.0250 <br />90.8 <br />79-133 <br />Carbon tetrachloride <br />0.0247 <br />0.0050 <br />0.0250 <br />98.8 <br />70-148 <br />Cblorobenzene <br />0.0207 <br />0:0050 <br />0.0250 <br />82.8 <br />75-122 <br />Chloroethane <br />0.0257 <br />0.0050 <br />0.0250 <br />103 <br />67-128 <br />Chloroform <br />0.0243 <br />0.0050 <br />0.0250 <br />97.2 <br />71-128 <br />Chloromethane <br />0.0244 <br />0.0050 <br />0.0250 <br />97.6 <br />69-142 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of qW document. This analytical report must be reproduced in its entirety. - -6 <br />- 4�- <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 />