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Certificate of Analysis <br /> Don Light <br /> Del-Tech Geotechnical Services Date Received 07/21/99 <br /> 10624 Olive Avenue Date Reported 08/09/99 <br /> Oakdale, CA 95361 Submission Number 9907000590 <br /> Pro)ect ID 6402 <br /> Project Desc Ted Peters Trucking_UST <br /> TEST METHOD <br /> Lead, by ICP, Wastewater EPA 200 7 <br /> Lab Sample Date Time Date Date <br /> Number Description Sampled Sampled Prep Anal Analyte Result Units PQL Dil DLR <br /> 121625 SB-1 22-24' 07/19/99 0000 07/27/99 07/27/99 Lead Pb ND mg/L 005 1 005 <br /> 121626 SB-2 22-24' 07/19/99 0000 07/27/99 07/27/99 Lead�M ND mg/L 005 1 005 <br /> I <br /> ND None Detected PQL Practical Quantitation Limit <br /> m L Milli rams/Liter = m T Conversions <br /> Milligrams/Liter pp Dr Dilution Factor 1 ppm — 1000 ppb <br /> lig/L. Micrograms/Liter = ppb DLR Reportable Detection Limit 1 ppb = 0 001 ppm <br /> mg/kg Milligrams/Kilograrn = ppm derived by (PQL x Drl) <br /> pg/kg Micrograms/Kilogram = ppb Higher Iimits may be the result of exceptional sample matrices or interferences <br /> A N A 1 Y r 1 C A L <br /> LABORATORIES <br />