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} 04/22/94 D9:46 FAX 916 372 8781 GROUNDWATER TECH [moos <br /> 04/22/94 09:29 '$510.685 9148 GROUNDWATER TECH SACRAMENTO 16009/010 <br /> Superior P�-ecfsfon Analytical, lnc. <br /> 1555 Burke, unit 1 ■ San FranCISCA, California 44124 - (415)647-2081 /fax(415)821-7123 <br /> ' C E R T I P I C A T B 4 F . A N A L Y S I S <br /> ANALYSIS FOP, TOTAL PETROLEUM HYDROCAR13ONS <br /> Page 2 of 2. <br /> QA/QC INMRMATION <br /> SET: 30382 <br /> NA = ANALYSIS NOT REQtMSTBD <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> ug/L - parts per billion (ppb) <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 5520F: <br /> Minimum Detection Limit in Water: 5000ug/L <br /> Modified EPA SW-846 Met-had 8015 for Extractable Hydrocarbons: <br /> Minimum Quantitation Limit for Diesel. in Water: 50ug/L <br /> EPA SW-846 Method 8015/503a Total Purgabl,e Petroleum Hydrocarbons: <br /> Minimum Quantitation Limit for Gasoline in Water: 50ug/L <br /> 1 EPA SW-845 Method 8020/BTXE <br /> Minimum Quantitation Limit in Water: 0.5ug/L <br /> ANALYTE MS/MSD RECOVERY RPD C"NTRQL LIMIT <br /> ---w <br /> Gasoline: 113%11.3 0% 70-130 <br /> Benzene: 87/89 1* 70-130 <br /> Toluene: 89/92 3%- 70-130 <br /> Ethyl Benzene: 80/83 41c 70-130 <br /> Total Xylenes: 96/98 24r 70-130 <br /> Senior Chemist <br /> Certlfird.I�DOCaCOrfes <br />