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Alpha VAnalytical Laboratories Inc. e-mail: clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 21 of 50 <br />URS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 Report Date: 1.0/22/07 07:09 <br />Sacramento, CA 95833 Project No: 18600251.02041 <br />Attn: Chani Leimbach Project ID: DTSC FMS24 Phase 2 <br />Order Number Receipt Date/Time Client Code Client PO/Reference <br />07J0352 10/06/2007 13:00 URS -SAC <br />Metals by EPA 6000/7000 Series Methods - Quality Control <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 />. <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 />Spike Source %RFC <br />RPD <br />Analyte(s) <br />Result <br />PQL <br />Units <br />Level Result %REC Limits <br />RPD <br />Limit <br />Flag <br />Batch AJ71541 - EPA 3051 Microwave <br />LCS (AJ71541-BSI) <br />- <br />Prepared: 10/15/07 Analyzed: 10/18/07 <br />Thallium <br />21.1 <br />7.0 <br />" <br />20.0 106 85-115 <br />Vanadium <br />20.0 <br />5.0 <br />20.0 I00 85-115 <br />Zinc <br />22.4 <br />10 <br />20.0 I12 85-115 <br />Duplicate (AJ71541-DUP1) <br />Source: 07JO352-01 <br />Prepared: 10/15/07 Analyzed: 10/18/07 <br />Antimony <br />ND <br />15 <br />mg/kg <br />ND <br />20 <br />Arsenic <br />2.58 <br />2.0 <br />'1 <br />2.2 <br />15.9 <br />20 <br />Barium <br />108 <br />10 <br />87 <br />21.5 <br />20 <br />QM -04 <br />Beryllium <br />ND <br />0.75 <br />ND <br />20 <br />Cadmium <br />ND <br />1.0 <br />ND <br />20 <br />Chromium <br />33.8 <br />5.0 <br />24 <br />33.9 <br />20 <br />QM -04 <br />Cobalt <br />19.2 <br />10 <br />14 <br />31.3 <br />20 <br />QM -04 <br />Copper <br />25.1 <br />10 <br />21 <br />17.8 <br />20 <br />Lead <br />7.50 <br />5.0 <br />6.6 <br />12.8 <br />20 <br />Molybdenum <br />ND <br />10 <br />ND <br />20 <br />Nickel <br />2I.6 <br />10 <br />18 <br />18.2 <br />20 <br />Selenium <br />ND <br />1.0 <br />ND <br />20 <br />Silver <br />ND <br />5.0 <br />ND <br />20 <br />.Thallium <br />ND <br />7.0 <br />ND <br />20 <br />Vanadium <br />83.9 <br />5.0 <br />65 <br />25.4 <br />20 <br />QM -04 <br />Zinc <br />51.8 <br />10 <br />60 <br />I4.7 <br />20 <br />Matrix Spike (AJ71541-MSI) <br />Source: -07JO352-01 <br />Prepared: 10/15/07 Analyzed: 10/18/07 <br />Antimony <br />15.4 <br />15 <br />mg/kg <br />20.0 ND 77.0 70-130 <br />Arsenic <br />4.17 <br />2.0 <br />" <br />2.00 2.2 98.5 70-130 <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 />. <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 />