Laserfiche WebLink
AEGIS ENVIRONMENTAL , INC <br /> 1050 Melody Lane, Suite 160, Roseville, CA 95678 ♦ 916.782-2110/916.969-2110 I FAX 916.786-7830 <br /> I <br /> February 1, 1993 <br /> k� <br /> V F" D <br /> R <br /> F E B A 2 1003 <br /> ENVIRC)NMENTAL HEALTH <br /> Mr Gary Reeves <br /> Senior Enforcement Officer PERMIT/SERVICES <br /> San Joaquin Valley Unified <br /> Air Pollution Control District <br /> 4230 Kiernan Avenue, Suite 130 <br /> Modesto, California 95356 <br /> Subject Catalyst Installation/System Status <br /> Soil Vapor Extraction and Emission Control System <br /> Shell Service Station <br /> . 620 West Charter Way, Stockton, California <br /> Air Permit to Operate No 91-471 <br /> WIC No 204-7524-4305 <br /> Dear Mr Reeves <br /> On behalf of Shell Oil Company, Concord, California, Aegis Environmental, Inc (Aegis), <br /> is operating a soil vapor extraction system with Thermtech VAC 25 (manufacturer/model) <br /> thermal/catalytic oxidizer emissions control (system) at the subject site Continuous <br /> system operation in the thermal oxidizer mode commenced on September 17, 1992 <br /> The purpose of this letter is to provide San Joaquin Valley Unified Air Pollution Control <br /> District (APCD) with data collected during system conversion to the catalytic oxidizer <br /> mode This letter also includes Aegis interpretation of the data collected <br /> Catalyst modules supplied by the manufacturer were installed to the existing system stack <br /> on January 7, 1993 As required by the air permit to operate issued for the site, vapor <br /> samples were collected (approximately 1 hour after system conversion) from the catalytic <br /> oxidizer influent (influent), and stack (effluent) for laboratory analysis of benzene, toluene, <br /> ethylbenzene, total xylenes, and total petroleum hydrocarbon (TPH), as gasoline, <br /> concentrations <br /> s <br /> 91-246H LTR <br /> GEOLOGISTS • ENGINEERS • GROUNDWATER SCIENTISTS <br />