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0 <br />Alpha Analytical Laboratories Inc. e-mail: dientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Page 23 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 />Project No: 18600251.02041 <br />Project ID: DTSC FMS24 Phase 2 <br />Client PO/Reference <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. 13 p- 4-- 0 <br />Bruce Gove 10/22/2007 <br />Laboratory Director <br />Corporate: 208 Mason St., Ukiah, CA 95482 a Phone: (707) 468-0401 a Fax: (707) 468-5267 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA 94568 a Phone: (925) 828-6226 a Fax: (925) 828-6309 <br />Spike <br />Source <br />OKREC RPD <br />Analyte(s) <br />Result <br />PQL Units <br />Level <br />Result <br />a/uREC <br />Limits RPD Limit Flag <br />Batch AJ71517 - Metals Digest <br />Matrix Spike (AJ71517-MS1) <br />Source: 07J0335-01 <br />Prepared: <br />10/15/07 <br />Analyzed: 10/16/07 <br />Molybdenum <br />0.213 <br />0.50 <br />0.200 <br />ND <br />106 <br />70-130 <br />Nickel <br />0.182 <br />0.10 <br />0.200 <br />ND <br />91.0 <br />70-130 <br />Selenium <br />0.0165 <br />0.0050 <br />0.0200 <br />ND <br />82.5 <br />25-136 <br />Silver <br />0.186 <br />0.010 <br />0.200 <br />ND <br />93.0 <br />70-130 <br />• <br />Thallium <br />0.206 <br />0.40 <br />0.200 <br />ND <br />103 <br />70-130 <br />Vanadium <br />0.193 <br />0.50 <br />0200 <br />ND <br />96.5 <br />70-130 <br />Zinc <br />0223 <br />0.10 <br />0.200 <br />ND <br />112 <br />70-130 <br />Matriz8pike(AJ71517-MS2) <br />Source: 07J0357-01 <br />Prepared: 10/15/07 <br />Analyzed: 10/16/07 <br />Antimony <br />0.218 <br />0.020 mg/l <br />0200 <br />ND <br />109 <br />70-130 <br />Arsenic <br />0.0223 <br />0.0020 <br />0.0200 <br />0.0038 <br />92.5 <br />70-130 <br />Barium <br />0.314 <br />0.010 <br />0200 <br />0.094 <br />110 <br />70-130 <br />Beryllium <br />0208 <br />0.010 <br />0.200 <br />ND <br />104 <br />70.130 <br />Cadmium <br />0.214 <br />0.010 <br />0.200 <br />ND <br />107 <br />70-130 <br />Chromium <br />0.206 <br />0.050 <br />0.200 <br />ND <br />103 <br />70.130 <br />Cobalt <br />0.208 <br />0.020 <br />0.200 <br />ND <br />104 <br />70-130 <br />Copper <br />0.197 <br />0.10 <br />0.200 <br />ND <br />98.5 <br />70-130 <br />Lead <br />0211 <br />0.050 <br />0.200 <br />ND <br />106 <br />70-130 <br />Molybdenum <br />0.220 <br />0.50 <br />0200 <br />ND <br />110 <br />70-130 <br />Nickel <br />0.181 <br />0.10 <br />0.200 <br />ND <br />90.5 <br />70-130 <br />Selenium <br />0.0169 <br />0.0050 <br />0.0200 <br />ND <br />84.5 <br />25-136 <br />Silver <br />0.190 <br />0.010 <br />0.200 <br />ND <br />95.0 <br />70-130 <br />Thallium <br />0.213 <br />0.40 <br />0.200 <br />ND <br />106 <br />70-130 <br />Vanadium <br />0.196 <br />0.50 <br />0.200 <br />ND <br />98.0 <br />70-130 <br />Zinc <br />0.220 <br />0.10 <br />0.200 <br />ND <br />110 <br />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. 13 p- 4-- 0 <br />Bruce Gove 10/22/2007 <br />Laboratory Director <br />Corporate: 208 Mason St., Ukiah, CA 95482 a Phone: (707) 468-0401 a Fax: (707) 468-5267 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA 94568 a Phone: (925) 828-6226 a Fax: (925) 828-6309 <br />