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, MA N A L Y T I C A L <br /> LABORATORIES <br /> Certificate of Analysis <br /> Don Light <br /> De!-Tec�1 Geotechnical Services Preparation Date 04/27/98 <br /> 10624 Olive Avenue Analysis Date 04/27/98 <br /> Oakdale, CA 95361 'Report Issue Date 04/29/98 <br /> Sample Date 04/17/98 <br /> Submission Number 9804000585 Sample Time .: 18:56 <br /> Lab Number 57584 Sample Type LIQUID <br /> Pro,ect Number Quarterly GW <br /> Project Desc. Delmonte <br /> Sample Description MW-1 Grab <br /> Oxygenates by GUMS (8260M) <br /> Analyte Result Units PQL Dil DLR <br /> Methyl•t•Butyl Ether ND Ag/L 10.0 1 10 <br /> Di-isopropyl Ether ND ag/L 5.0 I 5 <br /> Ethyl t-Butyl Ether ND yg/L 5.0 1 5 <br /> t-Amyl Methyl Ether ND Mcg/L 5.0 1 5 <br /> 4 <br /> ND None Detected PQL Practical Quantitation Limit Conversions: <br /> mg/L Milligrams/Liter = ppm Dil Dilution Factor 1 ppm = 1000 ppb <br /> jrg/L Micrograms/Liter = ppb DLR Reportable Detection Limit 1 ppb = 0.001 ppm <br /> mg/kg Milligrams/Kilogram = ppm derived by (PQL x Dil) <br /> µg/kg Micrograms/Kilogram = ppb Higher limits may result from exceptional sample matrices or interferences <br /> 1414 Stanislaus Street Fresno, CA 93706 • Phone 209-497-2888, In CA 800-877-8310 Fax 209-485-6935 <br />