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TEXACO ENVIRONMENT, HEALTH & SAFETY <br /> +'r SOIL VAPOR EXTRACTION OPERATION REPORT <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 July 1 - September 30, 1997 <br /> System Equipment AKI SYSTEMS, INC Thermal Oxidation, 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(" 01 Jul 97 Aug97 24 Sep 97 <br /> TPHg(2) 370 NA 1,900 <br /> Benzene ND(«2) NA ND(<o 16) <br /> Toluene 22 NA ND(--O 19) <br /> Ethylbenzene 065 NA 1 3 <br /> Xylenes 15 NA 42 <br /> LABORATORY DATA(mg/M') <br /> PROCESS EFFLUENT SUMMARY 01 Jul 97 Aug97 24 Sep 97 <br /> TPHg ND(<10) NA 19 <br /> Benzene ND(<o 2) NA ND(<o 16) <br />• Toluene ND(<o 2) NA 034 <br /> Ethylbenzene ND(<o 2) NA ND(<o 22) <br /> Xylenes ND(<o a) NA 22 <br /> OPERATING EFFICIENCY Apr 97 May 97 Jun 97 <br /> Average inlet temperature (°F) 939 NA $5 <br /> Average outlet temperature (°F) 1040 NA 1082 <br /> Average inlet flow rate (scfm.) 30 NA 67 <br /> TPHg emission rate (lbs/day) 0 0 046 <br /> TPHg effluent permit limit 2 lbs/day <br /> TPHg destruction efficiency 100% NA 999% <br /> Benzene destruction efficiency 0% NA 0% <br /> Total TPHg removed this period 108 lbs <br /> Cumulative TPHg removed(3) 6,179 lbs <br /> % Operation this period 24% <br /> (1)Analyzed by VOC Analytical 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 TPHg removal since system startup by S.ECOR to January 1996 <br /> ND=Not Detected at or above the laboratory detection limit represented to parenthesis <br /> NA=Not Available due to non-operational remediation system <br /> TES/stoekton/chtrwy397 tbl <br />