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i <br /> SUPERIOR ANALYTICAL LABORATORIES, INC. <br /> 825 ARNOLD, STE. 114 - MARTINEZ, CALIFORNIA 94553 - (415) 229-1512 DOHS.#319 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> DOHS #220 <br /> LABORATORY No . : 81248 DATE RECEIVED: 07/24 /90 <br /> CLIENT : Ai_ton Geoscience LATE REPORTED: 07/31%90 <br /> CLIENT JOB NO. : 30-140 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> ht Modified EPA SW-846 Method 5030 and 8015 <br /> LAB Concentration ( mg/L ) <br /> a Sample Identification Gasoline Range <br /> -------------- <br /> 1 1,4y�.._1W ND<0 . 05 <br /> mg/L - parts per million ( ppm ) <br /> Method Detection Limit for Gasoline in Water : 0 . 05 mg/L <br /> 9AQC SLImma ry : <br /> Daily Standard run at 2mg/L : RPD Gasoline = 5% <br /> MS/MSD Average Recovery = 93%: Duplicate RPD = 0% <br /> Richard Srna, Ph. D. <br /> Laboratory Manager <br /> OUTSTANDING QUALITY AND SERVICE <br />