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0 <br />rvv �. -- <br />Alpha Analytical Laboratories Inc. a -mail: clientservices®alpha-labs.com <br />CHEMICAL EXAMINATION REPORT Pape 25 of 50 <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 />07JO352 10/06/2007 13:00 URS -SAC <br />Report Date: <br />10/22/07 07:09 <br />Proj ect No: <br />18600251.02041 <br />Project ID: <br />DTSC FMS24 Phase 2 <br />Client PO/Reference <br />TPH by EPA/LUFT GC/GCMS Methods - Quality Control <br />Spike Source %REC RPD <br />Analyte(s) Result PQL Units Level Result °/uREC Limits RPD Limit Flag <br />Batch AJ71201 - VOAs in Water GCMS <br />Blank (AJ71201 BLKI) Prepared: l0/10/07 Analyzed: l0/11/07 <br />TPH as Gasoline ND 50 ug/l <br />Surrogate: Toluene -d8 24.5 ° 25.0 98.0 69-115 <br />195 <br />50 ug/l <br />:pared: 10/10/07 Analyzed: 10/11/07 <br />200 97.5 68-127 <br />Surrogate: Toluene -d8 25.3 25.0 101 69-115 <br />Matrix Spike (AJ71201 MSl) Source: 07JO258-01 Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as Gasoline 107 50 ug/l 200 ND 53.5 37-156 <br />Surrogate: Toluene -d8 24.8 25.0 99.2 69-115 <br />Matrix Spike Du AJ71201-MSD1 Source: 07JO258-01 Prepared: 10/10/07 Analyzed: 10/11/07 <br />TPH as Gasoline 130 50 ug/l 200 ND 65.0 37-156 19.4 20 <br />Surrogate. Toluene -d8 14.7 ° 25.0 98.8 69-115 <br />Batch AJ71614 - EPA 5030 Soil GC <br />& <br />TPH as Gasoline ND 1.0 mg/kg <br />Surrogate: l,4-BromoJluorobemem: 3.08 4.00 770 60-756 <br />LCS AJ71614-BS1Prepared: 10/16/07 Analyzed:l0/17!07 <br />TPH as Gasoline 27.8 1.0 mg/kg 21.4 130 70-130 <br />Surrogate: 1,4-Bromo$uorobenzene 4.10 4.00 101 60-156 <br />Matrix Spike AJ71614-MSI)Source: 07JO347-17 Prepared & Analyzed: 10/16/07 <br />The results in this report apply to the samples analyzed in accordance with the chain <br />of Ig document. This analytical report must be reproduced in its entirely. <br />Brace 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 0 Fax: (925) 828-6309 <br />