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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 District <br /> Reporting Period January 1 - March 31, 1995 <br /> System Equipment Kung 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) Jan 95 14 Feb 95 Mar 95 <br /> TPHg(2) NA 47 NA <br /> Benzene NA NDo 4 NA <br /> Toluene NA 075 NA <br /> Ethylbenzene NA 086 NA <br /> Xylenes NA 13 NA <br /> I <br /> LABORATORY DATA (mg/m') <br />. PROCESS EFFLUENT SUMMARY Jan 95 14 Feb 95 Mar 95 <br /> TPHg NA ND3o NA <br /> Benzene NA NDo i NA <br /> Toluene NA NDo i NA <br /> Ethylbenzene NA NDo l NA <br /> Xylenes NA NDo 3 NA <br /> OPERATING EFFICIENCY Jan 95 Feb 95 Mar 95 <br /> Mass discharge of TPHg(lbs/day) NA 0 NA <br /> Mass discharge of Benzene (lbs/day) NA 0 NA <br /> TPHg effluent permit limit (lbs/day) 5 <br /> Total TPHg removed this period 27 3 lbs <br /> Operating hours this period 1,560 <br /> Number of auto shut downs 2 <br /> % Operational 72% <br /> lip <br /> (1)Analyzed by Trace Analysis Laboratory using modified DHS Method for TPHg and EPA Method 8020 for HTEX. <br /> (2)Total Petroleum Hydrocarbons as(iasohne <br /> NDV—int detected at or above the labora affy reportmg hmR <br /> NA—data not available due to system shut-&m and ropaw <br />