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�a <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1555 BURKE. UMT Y •SAN FRANCISCO. CA 94124 • PHONE(415) 647.2081 <br /> C E R T I F I C A T E O F A N A L 1' S I S , <br /> LABORATORY NO. : 80562 DATE RECEIVED: 02/16/90 <br /> CLIENT: Alton Geoscience DATE REPORTED: 02/22/90 <br /> -- CLIENT JOB N0. : 30-140 <br /> — ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 5030 and 80!5 <br /> _ LAS Concentration fug/L1 <br /> Sample Identification Gasoline Range <br /> 1 MW-1 ND<50 <br /> 2 MW-2 50 <br /> 3 MW-4 1800 <br /> 4 MW-5 1900 <br /> MW-6 5700 <br /> 6 MW-8 3400 <br /> 7 MW-7 ND<50 <br /> ' ug/L - parts per billion (ppb) <br /> Method Detection Limit for Gasoline in Soil: 1 mg/kg <br /> Method Detection Limit for Gasoline in Water: 50 ug/i.. <br /> QAQC Summary: <br /> Daily Standard run at 2a,/L: RPD Gasoline = 0.2% <br /> '7S/MSD Average Recovery = 101%: Duplicate RPA = 1% <br /> Edward R. Morales <br /> aborato.r3 Manager <br /> OUTSTANDING QUALITY AND SERVICE <br />