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A N A L Y T I C A L <br /> LABORATORIES <br />' Certificate of Analysis <br /> Don Light <br /> pel-Tech Geotechnical Services Report Issue Date 05/11/99 <br /> 10624 Olive Avenue <br /> tubmission <br /> akdale, CA 95361 <br /> Sample Date 04/28/99 <br /> Number 9904000746 Sample Time 15 07 <br /> Lab Number 109528 Sample Type LIQUID <br /> ro)ect Number GW Monitoring <br /> rolect Desc George's Service <br /> ample Description MW-102 <br />' BSK LABORATORIES LUFT ANALYSIS <br /> Date Date <br /> Method Analyte Prep Anal Result Units PQL Dil DLR <br /> VPA <br /> A 8015/ Benzene 05/04/99 05/04/99 0 83 ug/L 0 3 1 03 <br /> 8020 <br /> (MODIFIED) <br /> kPA 8015/ Ethylbenzene 05/04/99 05/04/99 1 4 µg/L 0 3 1 03 <br /> PA 8020 <br /> IODIFIED) <br /> 015/ Toluene 05/04/99 05/04/99 2 4 Ag/L 0 3 1 03 <br /> PA sato <br /> CODIFIED) <br /> PA 8015/ Xylenes, Total 05/04/99 05/04/99 6 3 jig/L 0 3 1 03 <br /> EPA 8020 <br />(PODIFIED) <br /> A 8015/ Gasoline 05/04/99 05/04/99 ND ug/L. 50 1 50 <br /> EPA 8020 <br /> CODIFTED) <br /> PA 8015 / Methyl tent-Butyl 05/04/99 05/04/99 ND pg/L 5 1 5 <br /> EPA 8020 Ether <br /> ODIFIED) <br /> FTD None DetectedP�L Practical Quantitation Limit Conversions <br /> mg/L Milligrams/Luer n ppm Di Dilution Factor 1 ppm = 1000 ppb <br /> F/L Micrograms/Liter — ppb DLRReportable Detection Limit 1 ppb = 0 001 ppm <br /> g/lig Milligrams/Kilogram = ppm derived by (PQL x Dil) <br /> Yg Micrograms/Kilogram ppb to Higher limits may result from exceptional sample matrices or interferences <br /> 1 <br /> 1 1414 Stanislaus Street • Fresno, CA 93706-1623 6 Phone 559-497-2888, In CA 800-877-8310 • Fax 559-485-6935 <br />