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A N A L Y T I C A L <br /> LABORATORIES <br /> • <br /> Certificate of Analysis <br />(Dan Ligght <br /> Del-Tech Geotechnical Services Preparation Date 07/24/99 <br /> 10624 Olive Avenue Analysis Date 07/24/99 <br />(Oakdale, CA 95361 Report Issue Date 08/09/99 <br /> Sample Date 07/19/99 <br /> Submission Number 9907000590 Sample Time 0000 <br /> Uab Number 121625 Sample Type LIQUID <br /> ro)ect Number 6402 <br /> Project Desc Ted Peters Trucking_UST <br /> Description SB-1 22-24'fample <br /> Oxygenates by GC/MS 8260M <br /> r—nalyte Result Units PQL Dil DLR <br />`Methyl-t-Butyl Ether ND ug/L__._._,...• 5 0 1 5 <br /> Di-isopropyl Ether ND yg/L 5 0 1 5 <br /> li <br /> Ethyl t-Butyl Ether ND ug/L 5 0 1 5 <br /> Amyl Methyl Ether ND ug/L 5 0 15 <br /> ert-Butyl Alcohol ND ug/L 50 1 50 <br /> lie <br /> I <br /> I <br /> I <br /> I <br /> ND None Detected PQL Practical Quantitation Limit Conversions <br /> g/L Milligrams/Liter m ppm Dil Dilution Factor 1 ppm = 1000 ppb <br /> g/L Micrograms/Liter = ppb DLR Reportable Detection Limit 1 ppb = 0 001 ppm <br /> ig Milligrams/Kilogram = ppm derived by (PQL x Dil) <br /> Micrograms/Kilogram = ppb Higher limits may result from exceptional sample matrices or interferences <br />' 1414 Stanislaus Street 9 Fresno, CA 93706-1623 0 Phone 559-497-2888, In CA 800-877-8310 0 Fax 559-485-6935 <br />