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TEXACO ENVIRONMENTAL SERVICES <br /> • 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 Controlt Distnct <br /> Reporting Period January 1 -March 31, 1996 <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/ml) <br /> PROCESS INFLUENT SUMMARY(') 29 Jan 96 23 Feb 96 14 Mar 96 <br /> TPHg(2) 1,200 9,700 3,500 <br /> Benzene 15 110 18 <br /> Toluene 56 400 81 <br /> Ethylbenzene 15 100 39 <br /> Xylenes 66 430 210 <br /> LABORATORY DATA (mg/ml) <br /> PROCESS EFFLUENT SUMMARY 29 Jan 96 23 Feb 96 14 Mar 96 <br /> TPHg ND(10) 20 14 <br /> Benzene ND(o 2) ND(o 2) ND(o 2) <br /> Toluene 022 069 NDO 2) <br /> Ethylbenzene 020 039 ND(o 2) <br /> Xylenes 048 20 040 <br /> OPERATING EFFICIENCY 29 Jan 96 23 Feb 96 14 Mar 96 <br /> Average inlet temperature (°F) 195 183 240 <br /> Average outlet temperature (°F) 1456 1443 1450 <br /> Average inlet flow rate (scfm) 167 112 176 <br /> TPHg emission rate (lbs/day) 0 075 063 <br /> TPHg effluent permit limit 2 lbs/day <br /> TPHg destruction efficiency 100% 998% 996% <br /> Benzene destruction efficiency 100% 100% 100% <br /> Total TPHg removed this period 2256 lbs <br /> Cumulative TPHg removed(') 2256 lbs <br /> % Operation this period 40% <br /> (1)Analyzed by BC Analytical Laboratory using modified AHS Method for TPHg and EPA Method 8020 for STEN on 29 Jan 96 and 23 Feb 96 and 8015M <br /> for BTEX on 14 Mar 96 <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 labaratory defection linut reprffictted in parenthesis <br /> TESlsrncictonlch"7196 tbl <br />