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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 /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> Page 2 of 2 <br /> QA/QC INFORMATION <br /> SET: 83561 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> ug/1 = part per billion (ppb) <br /> * not typical diesel pattern present . <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 503E. <br /> Minimum Detection Limit in Water: 5000ug/L <br /> Modified EPA-SW846 Method 8015 for Extractable Hydrocarbons : <br /> Minimum Quantitation Limit for Diesel in Water : 50ug/l <br /> Standard Reference : NA <br /> EPA-SW846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons . <br /> Minimum Quantitation Limit for Gasoline in Water: 50ug/l <br /> Standard Reference 06/26/91 <br /> SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Water 0 . 5u9/1 <br /> Standard Reference . 07/08/91 <br /> ANALYTE REFERENCE SPIKE LEVEL MS/MSD RECOVERY RPD CONTROL LIMIT <br /> Oil & Grease NA NA NA NA NA <br /> Diesel NA NA NA NA NA <br /> Gasoline 06/26/91 200 ng 100/82 19 70-130 <br /> Benzene 07/08/91 200 ng 87/87 0 70-130 <br /> Toluene 07/08/91 200 ng 102/88 15 70-130 <br /> Ethyl Benzene 07/08/91 200 ng 97/91 6 70-130 <br /> Total Xylene 07/08/91 200 ng 107/97 9 70-130 <br /> Richard Srna, Ph. D. <br /> ktl�� (fU-14 <br /> iLaboratory Director <br /> OUTSTANDING QUALITY AND SERVICE <br />