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T <br />AlphaAnalytical Laboratories Inc. e-mail. clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 39 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 Date/ Time Client Code <br />0730347 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 PO1Reference <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Spike Source °/aREC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ71206 - VOAs in Water GCMS <br />Matrix Spike AJ71206-MSI <br />Source: 07JO309-01 <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />Carbon tetrachloride <br />11.6 <br />0.50 <br />10.0 <br />ND <br />116 <br />65-153 <br />Chlorobenzene <br />10.3 <br />0.50 <br />10.0 <br />ND <br />103 <br />57-136 <br />Chloroethane <br />11.4 <br />0.50 <br />10.0 <br />ND <br />114 <br />62-142 <br />Chloroform <br />10.6 <br />0.50 <br />10.0 <br />ND <br />106 <br />36-151 <br />Chloromethane <br />12.8 <br />0.50 <br />10.0 <br />ND <br />128 <br />69-149 <br />2-Chlorotoluene <br />10.5 <br />0.50 <br />10.0 <br />ND <br />105 <br />70-137 <br />4-Chlorotoluene <br />10.7 <br />0.50 <br />10.0 <br />ND <br />107 <br />50-134 <br />Dibromochloromethane <br />10.9 <br />0.50 <br />10.0 <br />ND <br />109 <br />62-141 <br />1,2-Dibromo-3-chloropropane <br />11.3 <br />0.50 <br />10.0 <br />ND <br />113 <br />59-134 <br />1,2 Dibromodhane (EDB) <br />10.5 <br />0.50 <br />10.0 <br />ND <br />I05 <br />40-I47 <br />Dibromomethane <br />11.3 <br />0.50 <br />10.0 <br />ND <br />113 <br />65-129 <br />1,2 Dichlorobenzene <br />10.5 <br />0.50 <br />10.0 <br />ND <br />105 <br />57-137 <br />I,3 -Dichlorobenzene <br />10.6 <br />0.50 <br />10.0 <br />ND <br />106 <br />65-131 <br />1,4 -Dichlorobenzene <br />10.3 <br />0.50 <br />10.0 <br />ND <br />103 <br />61-131 <br />Dichlorodifluoromethane <br />15.9 <br />0.50 <br />10.0 <br />ND <br />159 <br />63-177 <br />IJ-Dichloroethane <br />11.0 <br />0.50 <br />10.0 <br />ND <br />110 <br />64-136 <br />1,2-Dichloroethane <br />10.5 <br />0.50 " <br />10.0 <br />ND <br />105 <br />62-126 <br />1,1-Dichloroethene <br />12.9 <br />0.50 <br />10.0 <br />ND <br />129 <br />45-178 <br />cis -1,2 Dichloroethene <br />11.8 <br />0.50 <br />10.0 <br />ND <br />118 <br />66-141 <br />trans-l,2-Dichloroethene <br />11.2 <br />0.50 <br />10.0 <br />ND <br />112 <br />59-151 <br />1,2-Dichloropropane <br />10.9 <br />0.50 <br />10.0 <br />ND <br />109 <br />62-128 <br />1,3-Dichloropropane <br />10.4 <br />.0.50 <br />10.0 <br />ND <br />104 <br />67-126 <br />2,2-Dichloropropane <br />8.47 <br />0.50 <br />10.0 <br />ND <br />84.7 <br />71-135 <br />1,1-Dichloropropene <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />71-135 <br />cis-1,3-Dichloropropene <br />10.8 <br />0.50 <br />10.0 <br />ND <br />108 <br />50-140 <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 />