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qha Analytical Laboratories Inc, e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAAUNATION REPORT Page 43 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 />07JO347 10/06/2007 13:00 URS -SAC <br />Report Date: 10/22/07 07:24 <br />Proj ect No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <br />Volatile Organic Compounds by EPA Method 8260E - Quality Control <br />Spike Source %REC RPD <br />AnaIyte(s) Result PQL Units Level Result %REC - Limits RPD Limit Flag <br />Batch AJ71206 - VOAs in Water GCMS <br />Matrix Spike Dup (AJ'71206-MSDI.) <br />Source: 07J0309-01 <br />Prepared: 10/10/07 Analyzed: 10/11/07 <br />Methyl ethyl ketone <br />24.I <br />1.0 <br />20.0 <br />ND <br />120 <br />62-126 <br />4.67 <br />25 <br />Methyl isobutyl ketone <br />25.6 <br />1.0 " <br />20.0 <br />ND <br />128 <br />66-I27 <br />2.77 <br />25 QM -05 <br />Methyl tert butyl ether <br />11.8 <br />0.50 <br />10.0 <br />ND <br />118 <br />55-144 <br />2.58 <br />25 <br />Methylene chloride <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />60-137 <br />1.75 <br />25 <br />Naphthalene <br />14.0 <br />0.50 <br />10.0 <br />ND <br />140 <br />64-143 <br />4.38 <br />25 <br />n-Propylbenzene <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />66-138 <br />0.866 <br />25 <br />Styrene <br />11.3 <br />0.50 <br />10.0 <br />ND <br />113 <br />36-162 <br />3.60 <br />25 <br />1,1,1,2 -:Tetrachloroethane <br />11.6 <br />0.50 <br />10.0 <br />ND <br />116 <br />56-I37 <br />9.01 <br />25 <br />1,1,2,2 -.Tetrachloroethane <br />11.0 <br />0.50 <br />10.0 <br />ND <br />110 <br />63-121 <br />1.83 <br />25 <br />TetrachIoroethene <br />10.7 <br />0.50. <br />10.0 <br />ND <br />107 <br />49-148 <br />0.00 <br />25 <br />Toluene <br />11.2 <br />0.30 " <br />10.0 <br />ND <br />112 <br />56-147 <br />2.71 <br />25 <br />1,2,3-Trichlorobenzene <br />13.3 <br />0.50 <br />10.0 <br />ND <br />133 <br />60-143 <br />5.41 <br />25 <br />1,2,4-Trichlorobenzene <br />12.I <br />0.50 <br />10.0 <br />ND <br />121 <br />65-134 <br />3.36 <br />25 <br />1,1,1 -Trichloroethane <br />11.6 <br />0.50 <br />10.0 <br />ND <br />116 <br />62-144 <br />0.866 <br />25 <br />1,1,2 -Trichloroethane <br />10.8 <br />0.50 <br />10.0 <br />ND <br />108 <br />62-129 <br />4.74 <br />25 <br />Trichloroethene <br />11.2 <br />0.50 <br />10.0 <br />ND <br />112 <br />58-140 <br />4.57 <br />25 <br />Trichlorofluoromethane <br />11.6 <br />0.50 <br />10.0 <br />ND <br />116 <br />65-143 <br />1.74 <br />25 <br />Trichlorotrifluoroethane <br />10.7 <br />0.50 <br />9.84 <br />ND <br />109 <br />72-135 <br />3.81 <br />25 <br />1,2,3-Trichloropropane <br />10.7 <br />0.50 <br />10.0 <br />ND <br />107 <br />65-120 <br />3.81 <br />25 <br />1,2,4-Trimethylbenzene <br />11.8 <br />0.50 <br />10.0 <br />ND <br />118 <br />71-I38 <br />0.851 <br />25 <br />1,3,5-Trimethylbenzene <br />11.5 <br />0.50 <br />10.0 <br />ND <br />115 <br />70-136 <br />0.873 <br />25 <br />Vinyl chloride <br />13.2 <br />.0.50 <br />10.0 <br />ND <br />132 <br />55-146 <br />2.30 <br />25 <br />m,p-Xylene <br />222 <br />0.50 <br />20.0 <br />ND <br />ill <br />71-137 <br />0.905 <br />25 <br />o -Xylene <br />11.3 <br />0.50 <br />10.0 <br />ND <br />113 <br />70-137 <br />0.889 <br />25 <br />Xylenes (total) <br />33.5 <br />0.50 <br />30.0 <br />ND <br />112 <br />49-153 <br />0.900 <br />25 <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 9 Phone: (925) 828-6226 - Fax: (925) 828-6309 <br />