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t <br /> SUPERIOR ANALYTICAL LABORATORIES, INC. <br /> 825 ARNOLD.STE. 114 - MARTINEZ.CALIFORNIA 94553-(415) 229-1512 DOHS #31F <br /> a <br /> DOHS #220 <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 /> s <br /> Page 3 of 3 <br /> QA/QC INFORMATION <br /> SET: 83554 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> mg/kg = part per million (ppm) <br /> ,a <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 503E: <br /> Minimum Detection Limit in Soil: 50mg/kg <br /> Modified EPA-SW846 hethod 8015 for Extractable Hydrocarbons: <br /> Minimum Quantitation Limit for Diesel in Soil: lmg/kg <br /> iiStandard Reference: NA <br /> 1 EPA-SW846 Method 8015/5030 Total Purgable Petroleum hydrocarbons? <br /> Minimum Quantitation Limit for Gasoline in Soil: lmg/kg <br /> Standard Reference: 06/26/91 <br /> rI SW-846 Method 8020/BTXE <br /> Minimum Quantitation Licit in Soii:.. .0.005mg/kg <br /> Stiandard Reference: 07/08/91 <br /> ANALYTE'.' REFERENCE ._SPIKE LEVEL MS/MSA RECOVERY RPA CONTROL LIMIT <br /> ------ --------- -.--- -- --------------- --- -------------- <br /> Oil & Grease . NA NA NA NA NA <br /> u Diesel NA NA NA NA NA <br /> Gasoline 05/26/91 200 ng 98/82 13 70-'f40 <br /> Benzene07/08/91 200 ng 91/39 2 70-130 <br /> Toluene 07/08/91 200 ng 90/85 6 70-130 <br /> Ethyl Benzene 07/08/91 200 ng 93/85 10 70-130 " <br /> Total Xylene 07/08/91 200 ng100/88 12 70-130 <br /> Richard S Pn.D, <br /> Laboratory Director <br /> g OUTSTANDING QUALITY AND SERVICE <br /> k - ... <br /> c <br />