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CONOCO, INC <br /> SOIL VAPOR EXTRACTION OPERATION REPORT <br /> 4325 East Washington Street <br /> Stockton, California <br /> Consultant SECOR International Incorporated <br /> Reporting Agency San Joaquin Valley Unified Air Pollution Control Distnct <br /> Reporting Period January 1 - March 31, 1996 <br /> System Equipment King Buck Hasstech,Natural Gas Fueled <br /> 5 HP blower,10 extraction wells <br /> Operating Mode Thermal oxidation <br /> Permit# N-1014-1-0 <br /> LABORATORY DATA (mg/m3) <br /> PROCESS INFLUENT SUMMARYfI 17 Jan 96 Feb 96 Mar 96 <br /> TPHg(2) 210 NA NA <br /> Benzene NDO 64 NA NA <br /> Toluene 1 3 NA NA <br /> Ethylbenzene 20 NA NA <br /> Xylenes 35 NA NA <br />• LABORATORY DATA (mg/m3) <br /> PROCESS EFFLUENT SUMMARY 17 Jan 96 Feb 96 Mar 96 <br /> TPHg ND41 NA NA <br /> Benzene NDo 64 NA NA <br /> Toluene NDo o75 NA NA <br /> Ethylbenzene NDo 087 NA NA <br /> OPERATING EFFICIENCY Jan 96 Feb 96 Mar 96 <br /> Mass discharge of TPHg (lbs/day) 0 NA NA <br /> Mass discharge of Benzene (lbs/day) 0 NA NA <br /> TPHg effluent permit limit (lbs/day) 5 <br /> Total TPHg removed this period 54 lbs <br /> Cumulative TPHg removed(') 106,119 lbs <br /> Operating hours this period 552 <br /> Number of auto shut downs 1 <br /> % Operational 25% <br /> (1)Analyzed by Quanterra Environmental Services Laboratory using EPA TO-3 Method for TPHg and BTEX. <br /> (2)Total Petroleum Hydrocarbons as Gasoline <br />. (3)Cumulative TPHg is based on Sunnvers 'pounds of gasoline removed" dated 12 Oct 1994 and added to the pounds removed during system operation <br /> by s,--COR <br /> NDo os=not detected above the laboratory reporting linut_ <br /> NA=data not available due to system shut-down <br />