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TABLE I <br /> SOIL VAPOR EXTRACTION OPERATION REPORT <br /> F Texaco <br /> • 440 West Charter Way <br /> Stockton, California <br /> Consultant SECOR International Incorporated <br /> Reporting Agency San Joaquin Valley Unified Air Pollution Control District <br /> Reporting Period December 31, 1997 to March 31, 1998 <br /> System Equipment AKI SYSTEMS, INC Thermal Oxidizer, 4 dual-completion extraction wells, <br /> 25 HP blower <br /> Operating Mode Thermal Oxidation <br /> Permit# N-3139-1-0 <br /> LABORATORY DATA (mg/M') <br /> PROCESS INFLUENT SUMMARY(" Jan 98 Feb 98 March 98 <br /> TPHg(2) 220 <10 NS <br /> Benzene <0 2 <0 2 NS <br /> Toluene <0 2 <0 2 NS <br /> Ethylbenzene 05 <0 2 NS <br /> Xylenes 084 <0 4 NS <br /> LABORATORY DATA (mg/M') <br /> PROCESS EFFLUENT SUMMARY Jan 98 Feb 98 March 98 <br /> TPHg <10 <10 NR <br /> Benzene <0 2 <0 2 NR <br /> . Toluene <0 2 <0 2 NR <br /> Ethylbenzene <0 2 <0 2 NR <br /> Xylenes 049 068 NR <br /> OPERATING EFFICIENCY Jan 98 Feb 98 March 98 <br /> Average inlet temperature (°F) 732 567 588 <br /> Average outlet temperature (°F) 1072 1023 1003 <br /> Average Inlet flow rate (scfm) 31 21 42 <br /> TPHg emission rate (lbs/day) 0 0 0 <br /> TPHg effluent permit limit 2 lbs/day <br /> TPHg destruction efficiency 100% NA NA <br /> Benzene destruction efficiency NA NA NA <br /> Total TPHg removed this period 22 lbs <br /> Cumulative TPHg removed(') 6,256 lbs <br /> % Operation this period 86% <br /> (1)Analyzed by VOG Analytical Inboratory using modified DHS Method for TPHg and EPA Method 8420 for BTEX <br /> (2)Total Petroleum Hydrocarbons as Gasoline <br /> (3)Cumulative TPHg is based on TPHg removal since system startup by SECOR in January 1996 <br /> ND=Not Detected at or above the laboratory detection limit represented in parenthesis <br /> mg/Ml=milligrams per cubic Meter NS=Not Sampled Nit=Sample collected and delivered to laboratory that was out of business <br /> TES/stockton1chttwy\TEST1s1Q98 tbl wpd <br />