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Alpha VAnalytical Laboratories Inc. <br />e-mail: clientservices@alpha-labs.com <br />URS Corp -Sac CHEMICAL EXAMINATION REPORT <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 Report Date: 10/22/07 07:09 <br />Attn: Chani Leimbach Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Order Number Receipt Date/1'ime <br />07J0352 Client Code Client PO/Reference <br />10/06/2007 13:00 URS -SAC <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Batch AJ71704 - VOAs in Soil GCMS <br />Spike Source %REC <br />Result PQL Units Level Result %REC Limits RPD RPD <br />0 <br />Pate 48 of 50 <br />Rl- <br />2,2-Dichloropmpane <br />------ vvul6u;ulJu^7ut-07 <br />Prepared&Analyzed: <br />l0/16/07 <br />1,1-Dicharopropene <br />0.0227 <br />0.0050 ^ <br />0.0237 ND <br />95.8 <br />37-143 <br />0.877 <br />25 <br />cis-1,3-Dichloropropene <br />O.Ok6l <br />0.0050 <br />0.0237 ND <br />67.9 <br />36-150 <br />4.85 <br />25 <br />trans-l,3-Dichloropropene <br />0.0163 <br />0.0050 <br />0'0237 ND <br />68.8 <br />0-173 <br />12.6 <br />25 <br />Ethylberizene <br />0.0111 <br />0.0050 " <br />0.0237 ND <br />46.8 <br />12-152 <br />13.4 <br />25 <br />Hexachlorobutadiene <br />0.0453 <br />0.0050 " <br />0.0237 0.035 <br />43.5 <br />23-150 <br />- <br />17.0 <br />25 <br />Isopropylbenzene <br />0.0142 <br />� <br />0.0050 <br />0.0237 ND <br />59. 9 <br />0-200 <br />8.06 <br />25 <br />p-Isopropyltaluene <br />0.0132 <br />0.0050 <br />0.0237 ND <br />55.7 <br />7-154 <br />2.99 <br />25 <br />Methyl ethyl ketone <br />0.0117 <br />0.0050 " <br />0.0237 ND <br />49.4 <br />9-164 <br />7.41 <br />25 <br />Methyl isobutyl ketone <br />0.0559 <br />0.015 <br />0.0474 ND <br />118 <br />25-147 <br />14.3 <br />25 <br />Methyl ten -butyl ether <br />0.0368 <br />0.010 " <br />0.0474 ND <br />77.6 <br />13-164 <br />10.1 <br />25 <br />Methylene chloride <br />0.0247 <br />0.0050 <br />0.0237 ND <br />104 <br />104 <br />60-138 <br />0.404 <br />25 <br />Naphthalene <br />0.0222 <br />0.0050 " <br />0.0237 ND <br />93.7 <br />41-146 <br />2.74 <br />25 <br />n-Propylbenzene <br />0.00929 <br />0.0050 " <br />0.0237 ND <br />39.2 <br />0-190 <br />24.6 <br />25 <br />Styrene <br />0.0127 <br />0.0050 <br />0.0237 ND <br />53.6 <br />0-171 <br />6.84 <br />25 <br />1,1,1,2 -Tetrachloroethane <br />0.0137 <br />0.0050 ^ <br />0.0237 ND <br />57.8 <br />0.172 <br />9.72 <br />25 <br />1,1,2,2 -Tetrachloroethane <br />0.0164 <br />0.00980 <br />0.0050 ° <br />0'0237 ND <br />69.2 <br />25-159 <br />4.18 <br />25 <br />Tetrachloroethene <br />0.0180 <br />0.0050 <br />0.0237 ND <br />41.4 <br />38-127 <br />7.96 <br />25 <br />Toluene <br />0.0050 <br />0.0237 ND <br />75.9 <br />35-145 <br />5.93 <br />25 <br />1,2,3-Trichlorobenune <br />0.0154 <br />0.0050 <br />0.0237 ND <br />65.0 <br />33-148 <br />1.29 <br />250.00732 <br />1,2,4-Trichlorobenzene <br />0.00754 <br />0.0050 " <br />0.0237 ND <br />30.9 <br />0-166 <br />24.7 <br />25 <br />1,1,1 -Trichloroethane <br />0.0050 <br />0.0237 ND <br />31.8 <br />0-172 <br />23.8 <br />25 <br />1,1,2 -Trichloroethane <br />0.0183 <br />0.0050 <br />0.0237 ND <br />77.2 <br />39-154 <br />2.70 <br />25 <br />Trichloroethene <br />0.0147 <br />0.0050 " <br />0.0237 ND <br />62.0 <br />55-130 <br />7.21 <br />25 <br />Trichlorofluoromethane <br />0.0178 <br />0.0177 <br />0.0050 ^ <br />0.0237 ND <br />75.1 <br />38-143 <br />16.0 <br />25 <br />0.0050 " <br />0.0237 ND <br />74.7 <br />40-149 <br />18.5 <br />25 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of custody document This analytical <br />report must be reproduced m <br />its entirety. <br />Bruce Gove <br />Corporate: 208 Mason St., Ukiah, CA 95482 <br />Laboratory Director <br />Phone: <br />10/22/2007 <br />Service Center: <br />6398 Dougherty Rd., Suite <br />3, Dublin, CA <br />(707) 468-0401 <br />94568 <br />• Fax: <br />(707) 468-5267 <br />• Phone: (925) <br />828-6226 • Fax: (925) 828-6309 <br />