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i . <br /> BSKANALYTICAL <br /> LABORATORIES <br /> l Tony Martin Certificate of Analysis <br /> I <br /> Kleinfelder Inc ELAP Certificate#1180 <br /> 2825 East Myrtle Street Report Issue Date: 03/14/2002 <br /> Stockton, CA 95205-4794 <br /> BSK Submission#: 2002021116 <br /> BSK Sample ID#: 185087 <br /> Project ID: DISCO Project Desc: 1st QTR 2002 GW <br /> Submission Comments: <br /> Sample Type: Liquid Date Sampled: 02/21/2002 <br /> Sample Description: MW-7S Time Sampled: 1320 <br /> Sample Comments: Date Received: 02/24/2002 <br /> 1 Organics . <br /> Prep Analysis <br /> Analyte Method Result Units PQL Dilution DLR Date Date <br /> TPH as Gasoline EPA 8015(M) ND µg/L 50 1 50 03/05/2002 03/05/2002 <br /> Benzene EPA 8020 ND lag/L 0.3 1 0.3 03/05/2002 03/05/2002 <br /> i. Ethylbenzene EPA 8020 ND µg/L 0.3 1 0.3 03/05/2002 03/05/2002 <br /> Toluene EPA 8020 ND µg/1. 0.3 1 0.3 03/05/2002 03/05/2002 <br /> Total Xylenes EPA 8020 ND µg/L 0.3 1 0.3 03/05/2002 03/05/2002 <br /> 1,2-Dibromoethane EPA 8260 ND µg/L 5.0 1 5 03/05/2002 03/05/2002 <br /> 1,2-Dichloroethane EPA 8260 ND J g/L 5.0 1 5 03/05/2002 03/05/2002 <br /> tert-Butyl Alcohol EPA 8260 ND µg/L 50 I 50 03/05/2002 03/05/2002 <br /> Surrogate <br /> - ---------------------------------------------------------------........................---------------------------------------------•------- <br /> Fluorobenzene EPA 8020 85,2 %Rec - 1 N/A 03/05/2002 03/05/2002 <br /> Toluene-d8 EPA 8260 106.9 %Rec - 1 N/A 03/05/2002 03/05/2002 <br /> 4 � <br /> I ' <br /> I <br /> I <br /> f <br /> mg/L:Milligrams/Liter(ppm) PQL:Practical Quantitation Limit H:Analyzed outside of hold time <br /> mg/Kg:Milligrams/Kilogram(ppm) DLR:Detection Limit for Reporting P:Preliminary result <br /> µg/L:Micrograms/Liter(ppb) :PQL x Dilution S: Suspect result. See Cover Letter for comments. <br /> ug/Kg:Micrograms/Kilogram(ppb) ND:None Detected at DLR E:Analysis performed by External laboratory. <br /> %Rec:Percent Recovered(surrogates) See External Laboratory Report attachments. <br /> Report Authentication Code: 1111111111111111IN11111IN11111111111111111111111111111111111111111IN11111111 Page 1 of <br /> 1414 Stanislaus Street Fresno,CA 93706-1623 Phone 559-497-2888,In CA 800-877-8310 Fax 559-485-6935 <br />