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SUPERIOR ANALYTICAL LABORATORY, INC DEC 211989 <br /> 1385 FAIRFAx ST, SIE D • SAN FRANCISCO, CA 94124 - PHONE (415) 647-44§fxl <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO. : 80348 DATE RECEIVED: 12/08/89 <br /> CLIENT: Leedshill - Herkenhoff, Inc . DATE REPORTED- 12/15/89 <br /> CLIENT JOB NO. : 9832. 12 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 8015 <br /> LAB Concentration (mg/L ) <br /> Sample Identification Gasoline Range Diesel Range <br /> ---- --------------------- <br /> -- ---------------- ---------------- ------------ <br /> 1 MW-1 ND<1 ND<1 <br /> 2 MW-2 4 ND<1 <br /> 3 MW-3 ND<1 ND<1 <br /> 4 MW-4 ND<1 ND<1 <br /> 5 MW-5 6 ND<1 <br /> mg/L - parts per million (ppm) <br /> Method Detection Limit for Gasoline and Diesel in Soil . 10 mg/kg <br /> Method Detection Limit for Gasoline and Diesel in water: 1 mg/L <br /> QAQC Summary- <br /> Daily Standard run at 200mg/L• RPD Gasoline = 4 <br /> RPD Diesel = <15 <br /> MS/MSD Average Recovery = 95%, Duplicate RPD = 14% <br /> Edward R . Morales <br /> aboya-Co r -Manager <br /> r" <br /> OUTSTANDING QUALITY AND SERVICE <br />