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E� I N A L Y T [ CAL <br /> LABORATORIES <br /> L (�; - <br /> Analysis <br /> Certificate of Anal <br /> F y <br /> [Don Li-,hr <br /> Del-Tech Geotechnical Services Preparation Date : 04/07/99 <br /> F. 10624 Olive Avenue Analysis Date 04/07/99 <br /> L�ak—dale, CA 95361 Report Issue Date 04/14/99 <br /> Sample Date 03/25/99 <br /> submission Number 99030008I4 Sample Time I2:47 <br /> --ab Number 104961 Sample Type LIQUID <br /> roiect Number Valley Showcase <br /> Project Desc. G.W. Monitoring <br /> ample Description MW-3 <br /> ,ample <br /> Oxygenates by GUMS 8260M <br /> h nalvte Result Units PQL Dil DLR <br /> Methyl-t-Butyl Ether ND µg/L 5.0 1 5 <br /> r'Ji-isopropyl t.ther ND µg/L 5.0 1. 5 <br /> , thyl t-Bucvl Ether ND µg/L 5.0 1 3 <br /> �t_Amyl Nlethvl Ether ND µg/L 5.0 I 5 <br /> i B <br /> tert- uty :alcohol ND µg/L 50 1 30 <br /> lil � . <br /> r. <br />;.Cl <br /> r� <br /> \u None DetectedP L : .` Practical Quantitation Limit Conversions: <br /> 'L �[iikgrams/Liter ppm D Dilution Factor 1 ppm 1000 poo <br /> Nlicrograms/Liter ppb DLR Reportable Detection Limit t ppb = 0.001 porn <br /> Iigrams/Kilogram = ppm derived by (PQL x Dil) <br /> Nhcrograms/Kilogram ppb Higher limits may result from exceptional sample matrices or interferences <br /> h <br /> �v} <br /> 1414 S:anislaus Street • Fresno, CA 93706-1623 Phone 559-497-2888, In CA 800-877-83IC Fax �5,)-4S5-61)35 <br />