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ARCO PRODUCTS COMPANY VES OPERATING REPORT,THIRD QUARTER,1997,ARCO 2093 <br /> Facility# 2093 <br /> Facility address 3425 Tracy Blvd Tracy, CA <br /> ARCO engineer Mr Paul Supple <br /> Consultant[project manager] Brown and Caldwell [Steve Misner,(916)444-0123] <br /> Lead agency CRWQCB,Central Valley Region, San Joaquin Co <br /> Public Health Dist <br /> Reporting period 6/30197-9/30/97 <br /> Equipment inventory King-Buck Hasstech 100 cfrn catalytic oxider(MMC5-A) <br /> 5 hp,240V,3-phase ROTRON blower <br /> Knockout pot <br /> Conde dual-stage#6 sparge blower <br /> Sparge well and blower controller/timer(7-channel) <br /> AQMD permit no N-3413-1-0 <br /> Status for reporting period <br /> A King-Buck 100 cfin catalytic oxidizer soil vapor extraction and treatment system(SVETS)was installed in <br /> November, 1995 and began operation in January of 1996 The influent soil vapor concentrations decreased <br /> significantly during the fourth quarter 1996 due to high groundwater levels As a result,the SVETS was shutdown <br /> on January 13, 1997 and was not restarted until groundwater levels decreased The SVETS was restarted on June <br /> 18, 1997 at an influent concentration of 370 ppm The air sparging system was also started on lune 18, 1997,but <br /> was turned off on June 25, 1997 as flow was confirmed in only one sparge well and the sparge system had little <br /> effect on influent concentrations to the SVETS <br /> Soil vapor extraction system <br /> Operating hours this period 96 <br /> Percent up time 4% <br /> Operating hours to date 3,650 <br /> Operating mode Catalytic oxidation <br /> TPH conc end of period(PID,ppmv) 180 <br /> Flowrate end of period 60 <br /> TPH destroyed this period(PID,lbs) 17 <br /> Air spargmg system (Not operating) <br /> Operating hours to date 343 <br /> Attachments <br /> Table I Soil Vapor Extraction and Treatment System Influent Data <br /> Table 2 Soil Vapor Extraction and Treatment System Effluent Data <br /> Table 3 Soil Vapor Extraction Well Data <br /> Table 4 Dissolved Oxygen Concentrations <br /> Chart 1 TPH-G Concentrations vs Time <br /> Chart 2 Cumulative Hydrocarbons Removed(as TPH-G) vs Time <br /> Assumptions <br /> The quantity of hydrocarbons removed was estimated using the influent TPH concentrations <br /> at the oxidizer inlet <br /> 2 Percent up time was calculated by dividing actual operating hours as determined from hour meter <br /> readings by the total hours of the reporting penod <br />