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0 <br />Alpha VAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CB EMICAL EXAMINATION REPORT Page 44 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 Daterrime Client Code <br />07JO347 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 °/uREC Limits RPD Limit Flag <br />Batch AJ71206 - VOAs in Water GCMS <br />Matrix Spike Dup (Ad71206-MSDI) Source: 07JO309-01 Prepared: 10/10/07 Analyzed: 10/11/07 <br />Surrogate: Dibromofluoromethane 21.1 25.0 84.4 61-105 <br />Surrogate: Toluene -d8 23.3 25.0 93.2 69-115 <br />ASurro ate: Bromofluorobenzene 30.0 25.0 120 75-126 <br />Ba 71626 - VOAs in Water GCMS <br />Blank (.jJ71626-BLK1) <br />Prepared & Analyzed: 10/15/07 <br />Acetone <br />ND <br />5.0 <br />ue/1 <br />Benzene <br />ND <br />0.30 <br />" <br />Bromobenzene <br />ND <br />0.50 <br />" <br />Bromochlommethme <br />ND <br />0.50' <br />' <br />Bromodichlommethane <br />ND <br />0.50 <br />" <br />Bromoforta <br />ND <br />0.50 <br />" <br />Bromomethane <br />ND <br />0.50 <br />" <br />n-Butylbenzene <br />ND <br />0.50 <br />" <br />sec-Butylbenzene <br />ND <br />0.50 <br />" <br />tert-Butylbenzene <br />ND <br />0.50 <br />" <br />Carbon tetrachloride <br />ND <br />0.50 <br />" <br />Chlorobenzene <br />ND <br />0.50 <br />Chloroethane <br />ND <br />0.50 <br />" <br />Chloroform <br />ND <br />0.50 <br />" <br />Chloromethane <br />ND <br />0.50 <br />" <br />2-Chlorotoluene <br />ND <br />. 0.50 <br />" <br />4-Chlorotoluene <br />ND <br />0.50 <br />" <br />Dibromochloromethme <br />ND <br />0.50 <br />" <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of custody document. This analytical report must be reproduced in its entirety. —6 <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 9 Fax: (925) 828-6309 <br />