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i d 1 • <br /> A N A L Y T I C A L <br /> LABORAT ®RIES <br /> Certificate of Analysis <br /> John Lane <br /> Ground Zero Preparation Date 11/19/98 <br /> 1714 Main Street Analysts Date 11/19/98 <br /> Escalon, CA 95320- Report Issue Date 11/25/98 <br /> Sample Date 11/10/98 <br /> Submission Number 9811000298 Sample Time 1447 <br /> Lab Number 85898 Sample Type LIQUID <br /> Project Number 263 <br /> Project Desc Tubburg Warehouse <br /> Sample Description TW-7AGW <br /> Oxygenates by GC/MS (8260M� <br /> Analyte Result Units PQL Dil DLR <br /> Methyl-t-Butyl Ether 620 µg/L 5 0 4 20 <br /> Di-isopropyl Ether ND ug/.L 5 0 4 20 <br /> Ethyl t-Butyl Ether ND uL 5 0 4 20 <br /> t-Amyl Methyl Ether ND ug/L 5 0 4 20 <br /> tert-Butyl Alcohol ND µg/L 50 4 200 <br /> i <br /> i <br /> ND None Detected PQL Practical Quantitation Limit Conversions <br /> m;/L Milligrams/Liters ppm Dtt Dilution FaLtor S ppm = 1000 ppb <br /> Ag)L Nlicrograms/Liter = ppb DLR Reportable Detection Limit i ppb = 0 001 ppm <br /> mslk� Milligrams/Kilogram = ppm derived by {PQL x Dil} <br /> ug hlicrograms/Kilo-ram = ppb Higher limits may result trom exceptional sample matrices or intcrterenLes <br /> 1414 Stanislaus Street Fresno, CA 93706-1623 9 Phone 209-497-2888, In CA 800-877-8310 - Fax 209-485-6935 <br />