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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 Au Pollution Control Distnct <br /> Reporting Period April 1 -June 30, 1995 <br /> System Eqwpment 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/m') <br /> PROCESS INFLUENT SUMMARYO) 10 Apr 95 22 May 95 June 95 <br /> TPHg(2) 67 870 NA <br /> Benzene 036 45 NA <br /> Toluene 44 21 NA <br /> Ethylbenzene 23 16 NA <br /> Xylenes 14 130 NA <br />. LABORATORY DATA (mg/M3) <br /> PROCESS EFFLUENT SUMMARY 10 Apr 95 22 May 95 June 95 <br /> TPHg ND30 ND30 NA <br /> Benzene NDo 1 010 NA <br /> Toluene NDo 1 010 NA <br /> Ethylbenzene NDo 1 NDo t NA <br /> Xylenes NDo 3 054 NA <br /> OPERATING EFFICIENCY Aril 95 May 95 Jane 95 <br /> Mass discharge of TPHg (lbs/day) 0 0 0 <br /> Mass discharge of Benzene (lbs/day) 0 0 001 0 <br /> TPHg effluent permit limit (lbs/day) 5 <br /> Total TPHg removed this period 260 lbs <br /> Cumulative TPHg removed(3) 105,950 lbs <br /> Operating hours this period 1464 <br /> Number of auto shut downs 1 <br /> % Operational 70% <br /> (1)Analyzed by Trace Analysis Laboratory using modified DHS Method for TPHg and EPA Method 8020 for BTEX <br />. (2)Total Petroleum Hydrocarbons as Gasoline <br /> (3)Cumulative TPHg is based on Sunnvers"pounds of gasoluw removed" dated 11 Oct 1994 and added to the pounds removed during system operation <br /> by SECOR <br /> ND30=not detectod above the laboratory fgvd ng lural <br /> NA=data not available due to system shut-down and repair <br />