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0 <br />'#a <br />Alpha PAnalytical Laboratories Inc. <br />e-mail: <br />clientsenricesCalalpha-labs.com <br />CHEMICAL EXAMINATION REPORT <br />URS Corp -Sac <br />Page 28 of 68 <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Report Date: <br />10/22/07 07:24 <br />Attn: Chani Leimbach <br />Project No: <br />o: <br />18600251.02041 <br />Project <br />DTSC FM24 Phase 2 <br />Order Number Receipt Date/Time <br />Client <br />Code <br />0770347 <br />10/06/2007 13:00ClientPO/Reference <br />URS <br />-SAC <br />Metals by EPA 6000/7000 Series Methods - Quality Control <br />Analyte(s) <br />Result <br />PQL Units <br />Spike <br />Level <br />Source <br />Result %REC <br />°/d2EC <br />Limits <br />RPD <br />RPD <br />Limit <br />Flag <br />Batch AJ71541 - EPA 3051 Microwave <br />Matrix S ike AJ71541-MS2 Source: 07JO347-02 <br />Molybdenum <br />Prepared: <br />10/15/07 Analyzed: 10/18/07 <br />15.5 <br />10 " <br />Nickel <br />20.0 <br />ND 77.5 <br />70-130 <br />Sele <br />47.6 <br />0.877 <br />10 <br />20.0 <br />26 108 <br />70-130 <br />St <br />1.0 <br />2.00. <br />ND 25.8 <br />15-115 <br />Th tum <br />17.3 <br />5.0 " <br />. 20.0 <br />ND 86.5 <br />70-130 <br />Vanadium <br />14.2 <br />7.0 <br />20.0 <br />ND 71.0 <br />70-130 <br />Z inc <br />88.5 <br />5.0 <br />20.0 <br />64 122 <br />70-130 <br />121 <br />10 <br />20.0 <br />75 230 <br />70-130 <br />QM -04, <br />Matrix Spike Du AJ71541-MSDl Source: 07J0352-01 <br />AntimonyAnalyzed: <br />Prepared: <br />l0/15/07 Anal <br />QM -4X <br />Arsenic <br />17.9 <br />15 mg/kg <br />20.0 <br />ND 89.5 <br />70-130 <br />15.0 <br />20 <br />Barium <br />4.25 <br />2.0 " <br />2.00 <br />22 102 <br />70-130 <br />1.90 <br />20 <br />126 <br />1p <br />20.0 <br />87 195 <br />70-130 <br />23.2 <br />20 <br />QM -04 <br />Beryllium <br />Cadmium <br />19.4 <br />0.75 <br />20.0 <br />ND 95.6 <br />70-130 <br />3.05 <br />20 <br />QM -4X <br />Chromium <br />17.8 <br />1.0 <br />20.0 <br />ND 89.0 <br />70-130 <br />1.67 <br />20 <br />Co <br />51.1 <br />38.2 <br />5.0 <br />20.0 <br />24 136 <br />70-130 <br />1.78 <br />20 <br />QM -04 <br />Copper <br />10 <br />200 <br />. <br />14 121 <br />70-130 <br />6.77 <br />20 <br />Lead <br />41.8 <br />27.6 <br />10 <br />�� <br />20.0 <br />21 104 <br />70-130 <br />56.0 <br />20 <br />QM -04 <br />Molybdenum <br />18.0 <br />5.0 <br />20.0 <br />6.6 105 <br />70-130 <br />3.56 <br />20 <br />Nickel <br />10 <br />20.0 <br />ND 90.0 <br />70-130 <br />1.10 <br />20 <br />Selenium <br />41.8 <br />� 0.989 <br />10 " <br />20.0 <br />18 119 <br />70-130 <br />0.962 <br />20 <br />Silver <br />1.0 " <br />2.00 <br />ND 30.4 <br />15-115 <br />3.81 <br />20 <br />Thallium <br />22.2 <br />15.2 <br />5.0 <br />20.0 <br />ND 111 <br />70-130 <br />28.9 <br />20 <br />QM -01 <br />Vanadium <br />7.0 " <br />20.0 <br />ND 76.0 <br />70-130 <br />9.40 <br />20 <br />97.8 <br />5.0 <br />20.0 <br />65 164 <br />70-130 <br />19.6 <br />20 <br />QM -04 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of document This analytical report must be reproduced in its entirety. -' f <br />13 <br />- 4�- <br />Bruce Gove <br />Corporate: 208 Mason St., Laboratory Director 10/22/2007 <br />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 />