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Alpha VAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAl1rIINATION REPORT Page 55 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 <br />10/06/2007 13:00 <br />Report Date: 10/22/07 07:24 <br />Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client Code Client PO/Reference <br />URS -SAC <br />Volatile Organic Compounds by EPA Method 8260113 - Quality Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71626 - VOAs in Water GCMS <br />Matrix Spike Dup (AJ71626-MSD1) <br />Source: 07J4416-01 <br />Prepared & Analyzed_:_ 10/15/07 <br />Acetone <br />ND <br />Trichlorotrifluoroethane <br />9.25 <br />0.50 <br />9.84 <br />ND <br />94.0 <br />72435 <br />7.52 <br />25 <br />1,2,3-Trichloropropane <br />10.8 <br />0.50 <br />•10.0 <br />ND <br />108 <br />65-120 <br />4.74 <br />25 <br />1,2,4-Trimethylbenzene <br />12.3 <br />0.50 <br />10.0 <br />ND <br />123 <br />71-138 <br />6.72 <br />25 <br />1,3,5-Trimethylbenzene <br />11.7 <br />0.50 <br />10.0 <br />ND <br />117 <br />70-136 <br />8.00 <br />25 <br />Vinyl chloride <br />10.6 <br />0.50 <br />10.0 <br />ND <br />106 <br />'55-146 <br />2.87 <br />25 <br />m,p-Xylene <br />21.8 <br />0.50 <br />20.0 <br />ND <br />109 <br />71-137 <br />6.64 <br />25 <br />o -Xylene <br />11.9 <br />0.50 <br />10.0 <br />ND <br />119 <br />70-137 <br />4.29 <br />25 <br />Xylenes (total) <br />33.7 <br />0.50 <br />30.0 <br />ND <br />112 <br />49-153 <br />5.80 <br />25 <br />Surrogate: Dibromofluoromethane 19.6 " 25.0 78.4 61-105 <br />Surrogate: Toluene -d8 26.1 25.0 104 69-115 <br />Surrogate: Bromgjluorobenzene 30.1 25.0 120 75-126 <br />Batch AJ71704 - VOAs in Soil GCMS <br />Blank (AJ7I704-BLK1) <br />Prepared & Analyz_ ed: 10/16/07 <br />Acetone <br />ND <br />0.020 mg/kg <br />Benzene <br />ND <br />0.0050 " <br />Bromobenzene <br />ND <br />0.0050 <br />Bromochloromethane <br />ND <br />0.0050 " <br />Bromodichloromethane <br />ND <br />0.0050 " <br />Bromoform <br />ND <br />0.0050 " <br />Bromomethane <br />ND <br />0.0050 " <br />n-Butylbenzene <br />ND <br />0.0050 " <br />sec-Butylbenzene <br />ND <br />0.0050 " <br />tert-Butylbenzene <br />ND <br />0.0050 " <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. <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 />