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T� Vi <br />is <br />Alpha Analytical Laboratories Inc. <br />e-mail: clientservices(�alpha-labs.com <br />CHEMICAL EXAMINATION REPORT <br />URS Corp -Sac <br />Page 20 of 50 <br />2870 Gateway Oaks Dr., Suite 300 <br />Sacramento, CA 95833 <br />Report Date: <br />10/22/07 07:09 <br />Attn: Chani Leimbach <br />Project No: <br />18600251.02041 <br />Project ID: <br />DTSC F'M824 Phase 2 <br />Order Number Receipt Date/I'ime <br />07J0352 Client Code <br />10/06/2007 13:00 URS-SAC <br />Client PO/Reference <br />Metals by EPA 6000/7000 Series Methods - Quality Control <br />Analyte(s) <br />Result PQL Units <br />Spike Source Level Result /DREG Li nECs RPD <br />Batch AJ71541 <br />- EPA 3051 Microwave <br />RPD Limit Flag <br />Blank (AJ71541-BLKl) <br />Cobalt <br />Prepared 10/15/07 Analyzed 10/18/07 <br />10 <br />Copper <br />ND 10 " <br />Lead <br />ND 5.0 <br />Molybdenum <br />ND 30 <br />Nickel <br />ND^ <br />30 <br />• <br />Selenium <br />ND 1.0 " <br />Silver <br />ND" <br />5.0 <br />Thallium <br />ND 7.0 " <br />Vanadium <br />ND 5.0 ^ <br />Zinc <br />ND 10 <br />LCS AJ71541-BSI) <br />Antimony <br />Prepared: 10/15/07 Analyzed: <br />10/18/07 <br />Arsenic <br />22.1 IS mg/kg <br />221 <br />20.0 110 <br />85-115 <br />Barium <br />22.6 <br />2.00 110 <br />80.120 <br />Beryllium <br />10 <br />10 <br />20.4 0.75 <br />20.0 113 <br />85-115 ' <br />Cadmium <br />22.3 „ <br />20.0 102 <br />85-115 <br />Chromium <br />1.0 <br />21.5 <br />20'0 112 <br />85-115 <br />Cobalt <br />21.5 <br />20.0 108 <br />85-115 <br />Copper <br />10 <br />]0 <br />18.60 <br />20.0 108 <br />85-115 <br />Lead <br />224 <br />200 . 93.085-115 <br />Molybdenum <br />5..0 <br />21.7 " <br />20.0 1122 <br />85-115 <br />Nickel <br />10 <br />23.0 <br />20.0 108 <br />85.115 <br />Selenium <br />10 <br />5.63 <br />20.0 115. <br />85.115 <br />Silver <br />1 <br />17-5 .0 „ <br />5.0 <br />2 00 282 <br />72-130 M-03 <br />Q <br />20.0 87.5 <br />78-108 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of custody document. <br />This analytical report must be reproduced in its <br />entirety. <br />Bruce Gove <br />Director <br />Corporate: 208 Mason St., Ukiah, CA 95482 • Phone: (707)t468 <br />10/22/2007 <br />Service Center: 6398 Dougherty Rd., Suite 3, Dublin, CA <br />0401 • Fax: (707) 468-5267 <br />94568 • Phone: <br />(925) 828-6226 <br />• Fax: (925) 828-6309 <br />