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0 <br />Alpha VAnalytical Laboratories Inc. e-mail: clientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 64 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 DatelTime Client Code <br />0770347 10/06/2007 13:00 URS -SAC <br />Report Date: <br />10/22/07 07:24 <br />Project No: <br />18600251.02041 <br />Project ID: <br />DTSC FMS24 Phase 2 <br />Client PO/Reference <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Spike Source a/uREC RPD <br />Analyte(s) Result PQL Units Level Result 0/oREC Limits RPD Limit Flag <br />Batch AJ71704 - VOAs in Soil GCM <br />Matrix Spike Dup (AJ71704-MSDi) <br />Source: 07J0507-01 <br />Prepared & Analyzed: 10/16/07 <br />' <br />Acetone <br />0.211 <br />0.020 <br />mg/kg <br />0.0934 <br />0.090 <br />130 <br />0-181 <br />1.91 <br />25 <br />Benzene <br />0.0169 <br />0.0050 <br />0.0237 <br />ND <br />71.3 <br />29-145 <br />2.34 <br />25 <br />Bromobenzene <br />0.0106 <br />0.0050 <br />0.0237 <br />ND <br />44.7 <br />31-144 <br />15.7 <br />25 <br />B> loromethane <br />0.0162 <br />0.0050 <br />0.0237 <br />ND <br />68.4 <br />58-129 <br />5.41 <br />25 <br />Bro ,dichloromethane <br />0.0163 <br />0.0050 <br />0.0237 <br />ND <br />68.8 <br />34-160 <br />9.36 <br />25 <br />Bromoform <br />0.0111 <br />0.0050 <br />0.0237 <br />ND <br />46.8 <br />22-166 <br />18.8 <br />25 <br />Bromomethane <br />.0.0203 <br />0.0050 <br />0.0237 <br />ND <br />85.7 <br />10-153 <br />142 <br />25 <br />n-Butylbenzene <br />0.0157 <br />0.0050 <br />0.0237 <br />ND <br />662 <br />0-192 <br />0.639 <br />25 <br />sec-Butylbenzene <br />0.0133 <br />0.0050 <br />0.0237 <br />ND <br />56.1 <br />0-187 <br />5.13 <br />25 <br />tert-Butylbenzene <br />0.0149 <br />0.0050 <br />" <br />0.0237 <br />ND <br />62.9 <br />0-179 <br />1.99 <br />25 <br />Carbon tetrachloride <br />0.0172 <br />0.0050 <br />0.0237 <br />ND <br />72.6 <br />10-189 <br />2.30 <br />25 <br />Chlorobenzene <br />0.0124 <br />0.0050 <br />0.0237 <br />ND <br />52.3 <br />32-139 <br />7.75 <br />25 <br />Chloroethane <br />0.0218 <br />0.0050 <br />0.0237 <br />ND <br />92.0 <br />46-141 <br />12.2 <br />25 <br />Chloroform <br />0.0212 <br />0.0050 <br />0.0237 <br />ND <br />76.4 <br />57-127 <br />8.87 <br />25 <br />Chloromethane <br />0.0226 <br />0.0050 <br />0.0237 <br />ND <br />95.4 <br />30-175 <br />4.06 <br />25 <br />2-Morotoluene <br />0.0122 <br />0.0050 <br />0.0237 <br />ND <br />51.5 <br />16-158 <br />7.87 <br />25 <br />4-Chlorotoluene <br />0.0103 <br />0.0050 <br />0.0237 <br />ND <br />43.5 <br />13-155 <br />14.4 <br />25 <br />Dibromochloromethane <br />0.0147 <br />0.0050 <br />0.0237 <br />ND <br />62.0 <br />34-160 <br />7.84 <br />25 <br />1,.-Dibromo-3-chloropropane <br />0.0135 <br />0.0050 <br />0.0237 <br />ND <br />57.0 <br />24-153 <br />21.8 <br />25 <br />1,2-Dibromoethane (EDB) <br />0.0124 <br />0.0050 <br />0.0237 <br />ND <br />52.3 <br />52-129 <br />12.8 <br />25 <br />Dibromomethane <br />0.0144 <br />0.0050 <br />0.0237 <br />ND <br />60.8 <br />58-125 <br />9.27 <br />25 <br />1,2 -Dichlorobenzene <br />0.0125 <br />0.0050 <br />0.0237 <br />ND <br />52.7 <br />17-143 <br />10.6 <br />25 <br />1,3 -Dichlorobenzene <br />0.00824 <br />0.0050 <br />0.0237 <br />ND <br />34.8 <br />11-150 <br />20.3 <br />25 <br />1,4-Dichlorobemene <br />0.0120 <br />0.0050 <br />0.0237 <br />ND <br />50.6 <br />31-135 <br />8.76 <br />25 <br />Dichlorodifluoromethane <br />0.0220 <br />0.0050 <br />0.0237 <br />ND <br />92.8 <br />28-190 <br />1.37 <br />25 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />ofW document. This analytical report must be reproduced in its entirety. -5 , <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 />