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A N A L Y T <br /> I C A <br /> LABORATORIES <br /> • <br /> Certificate of Analysis <br /> Don Lt ht <br /> De <br /> I-Tec Geotechnical Services <br /> 10624 Olive Avenue Report Issue Date 12/02/98 <br /> Oakdale, CA 95361 <br /> Submission Number 9811000367 Sample Date 11/13/98 <br /> Lab Number 86377 Sample Time 16 00 <br /> Project Number George& Mae Sample Type LIQUID <br /> Project Desc 1600 Durham Ferry <br /> Sample Description Trip Blank <br /> BSK LABORATORIES LUFT ANALYSIS <br /> Method Date Date <br /> Analyte Prep Anal Result Units PQL Dil DLR <br /> PA 8015 / Benzene 11/23/98 11/23/98 ND �g/L 0 3 1 0 3 <br /> EPA 8020 <br /> (MODIFIED) <br /> IPA 8015/ Ethylbenzene 11/23/98 11/23/98 ND L <br /> EP 1 8020 Fi� 0 3 1 0 3 <br /> IFIED) <br /> t* <br /> EPA 8015 / Toluene 11/23/98 11/23/98 ND Mcg/L 0 3 1 0 3 <br /> CPODIFIED) <br /> A 8015 / Xylenes, Total 11/23/98 11/23/98 ND µg/L 0 3 1 0 3 <br /> EPA 8020 <br /> CODLFIED) <br /> PA 8015/ Gasoline 11/23/98 11/23/98 ND ',gA 50 1 <br /> EPA 8020 50 <br /> IODIFIED) <br /> PA 8015 / Methyl-tert-Butyl 11/23/98 11/23/98 ND ag/L 5 1 <br /> EPA 8020 Ether 5 <br /> ODIFIED) <br /> None Detet-ted P L Practicaluantitation Limit <br /> mg/L Milligrams/Liter = ppm Q Conversions <br /> Di Dilution Factor 1 ppm 1000 ppb <br /> ;IL Micrograms/Liter = ppb DI R Deportable Detection Limit 1 <br /> o/kg Nfilligrams/Kilogrim = ppm derived by (PQL r Dil) ppb = 0 001 ppm <br /> u Micrograms/Kilogram a ppb Higher limits may result from exceptional sample matrices or interferences <br /> 1414 Stanislaw; Street Fresno, CA 93706-1623 • Phone 209-497-2888, In CA 800 877 8310 • hax 209-485 6935 <br />