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6 <br /> SUPERIOR ANALYTICAL LABORATORY, "lee <br /> f . <br /> INC. ly <br /> 1385 FAIRFAx Sr, STE. D.•SAN FRANCJSCo,CA 94124• PHONE (415)6472081 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> S <br /> LABORATORY NO. : 51418 DATE RECEIVED: 11/30/89 <br /> CLIENT: Leedshili - Herkenhoff, Inc. DATE REPORTED: 12/01/89 <br /> CLIENT J08 NO. : 9832. 12 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-848 Method 8015 <br /> LAS Concentration (mg/kg) <br /> # <br /> Sample Identification Gasoline- - <br /> Range Diesel Range <br /> - -_ - <br /> i 11/17/89-TBS--10 3200 ND<500 <br /> 2 11/17/89-T85-20 11000 ND<500 <br /> mg/kg _ parts per million (ppm) <br /> Minimum Detection Limit for Gasoline and Diesel in Soil : 10mg/kg <br /> QAOC Summary: <br /> Daily Standard run at 200mg/L: RPD Gasoline = <15% <br /> RPD Diesel W <15% <br /> MS/MSD Average Recovery = 128% <br /> Richard Srna, Ph.D. <br /> r Laboratory Di r tar <br /> OUTSTANDING QUALITY AND SERVICE <br />