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From:Dal Welkin SJC-Oakland Office Fax:1610)336-9119 Voice:(610)336-9118 To:Harlan Knoll Paye 19 of21 Friday,July 14,2000 4:49:44 PM <br /> From:ChromaLab,Inc. To:Dai Watkins Date:7114100 Time:4:01:52 PM Fax Page 18 of 20 <br /> C H RO MALAB, INC. Submission t 2000.07.0090 <br /> Environmental Services(SDB) <br /> To: San Joaquin Companv, Inc. Test Method: 8020 <br /> 8015M <br /> Attn: Dai Watkins Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCSILCSD) Soil QC Batch#2000107111-01.04 <br /> LCS: 2000107111-01.04-002 Extracted: 07/11/2000 06:27 Analyzed: 07/11/2000 06:27 <br /> LCSD: 2000/07/11-01.04-003 Extracted: 07/11/2000 06:55 Analyzed 07/11/2000 06:55 <br /> Compound Conc. [mg/Kg] Exp.Conc. [mg/Kg] Recovery[°k] RPD Ctrl_Limits Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 0.495 0.508 0.500 0.500 99.0 101.6 2.6 75-125 35 <br /> Benzene 0.0926 0.0844 0.1000 0.1000 92.6 84.4 9.3 77-123 35 <br /> Toluene 0.0900 0.0837 0.1000 0.1000 90.0 83.7 7.3 78-122 35 <br /> Ethyl benzene 0.0889 0.0841 0.1000 0.1000 68.9 84.1 5.5 70-130 35 <br /> Xylene(s) 0.265 0.253 0.300 0.300 88.3 84.3 4.6 75-125 35 <br /> Surrlogaws) <br /> Trifluorotoluene 423 393 500 500 84.6 78.6 53-125 <br /> 4-Bromofluorobenzene-FI 340 314 500 500 68.0 62.8 58-124 <br /> 1220 Quarry Lane'Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:07/14/2000 16:00 Page 11 of 13 <br />