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AIpha VAnalytical Laboratories Inc. e-mail. clientservices@alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 28 of 68 <br />LTRS Corp - Sac <br />2870 Gateway Oaks Dr., Suite 300 Report Date: 10/22/07 07:24 <br />Sacramento, CA 95833 Project No: 18600251.02041 <br />Attn: Chani Leimbach Project H): DTSC FMS24 Phase 2 <br />Order Number Receipt Date/Time Client Code Client PO/Reference <br />07JO347 10/06/2007 13:00 URS-SAC <br />Metals by EPA 6000/7000 Series Methods - Quality Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units Level Result %REC Limits RpD Limit Flag <br />Batch AJ71541 - EPA 3051 Microwave <br />Matrix Spike (AJ71541-MS2) <br />Source: 07JO347-02 <br />Prepared: 10/15/07 Analyzed: 10/18/07 <br />Molybdenum <br />15.5 <br />10 <br />20.0 <br />ND <br />77.5 <br />70-130 <br />- <br />Nickel <br />47.6 <br />10 <br />20.0 <br />26 <br />108 <br />70-130 <br />Selenium <br />0.877 <br />1.0 <br />2.00. <br />ND <br />25.8 <br />15-115 <br />Silver <br />17.3 <br />5,0 <br />20.0 <br />ND <br />86.5 <br />70-130 <br />Thallium <br />14.2 <br />TO <br />20.0 <br />ND <br />71.0 <br />70-130 <br />Vanadium <br />88.5 <br />5.0 <br />20,0 <br />64 <br />122 <br />70-130 <br />Zinc <br />121 <br />10 <br />20,0 <br />75 <br />230 <br />70-130 <br />QM -04, <br />QM -4X <br />Matrix Spike Dup (AJ71541-MSD1) <br />Source: 07J0352-01 <br />Prepared: 10/15/0.7_ <br />Analyzed: 10/18/07 <br />Antimony <br />17.9 <br />15. mg/kg <br />20.0 <br />ND <br />89.5 <br />70-130 <br />15.0 <br />20 <br />w <br />Arsenic <br />4.25 <br />2.0 <br />2.00 <br />2.2 <br />102 <br />70-130 <br />1.90 <br />20 <br />Barium <br />126 <br />10 <br />20.0 <br />87 <br />195 <br />70-130 <br />23.2 <br />20 <br />QM -04, <br />QM -4X <br />Beryllium <br />19.4 <br />0.75 <br />20.0 <br />ND <br />95.6 <br />70-130 <br />3.05 <br />20 <br />Cadmium <br />17.8 <br />1.0 <br />20.0 <br />ND <br />89.0 <br />70-130 <br />1.67 <br />20 <br />Chromium <br />51.1 <br />5.0 <br />20.0 <br />24 <br />136 <br />70-130 <br />1.78 <br />20 <br />QM -04 <br />Cobalt <br />38.2 <br />10 <br />20.0 <br />14 <br />121 <br />70-130 <br />6.77 <br />20 <br />Copper <br />41.8 <br />10 <br />20.0 <br />21 <br />104 <br />70-130 <br />56.0 <br />20 <br />QM -04 <br />Lead <br />27.6 <br />5.0 <br />20.0 <br />6.6 <br />105 <br />70-130 <br />3.56 <br />20 <br />Molybdenum <br />18.0 <br />10 <br />20.0 <br />ND <br />90.0 <br />70-130 <br />1.10 <br />20 <br />Nickel <br />41.8 <br />10 <br />20.0 <br />18 <br />119 <br />70-130 <br />0.962 <br />20 <br />Selenium <br />0.989 <br />I.0 <br />2.00 <br />ND <br />30.4 <br />15-115 <br />3.81 <br />20 <br />Silver <br />22.2 <br />5.0 <br />20.0 <br />ND <br />111 <br />70430 <br />28.9 <br />20 <br />QM -01 <br />Thallium <br />15.2 <br />7.0 <br />20.0 <br />ND <br />76.0 <br />70-130 <br />9.40 <br />20 <br />Vanadium <br />97.8 <br />5.0 <br />20.0 <br />65 <br />164 <br />70-130 <br />I9,6 <br />20 <br />QM -04 <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 />