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Resins Report for Air Mm*mtq of <br /> Extended Prot Vapor a gtrackm rest <br /> 4445 Pershing Avenue,Stockton,C-Ift is <br /> BACKGROUND AND EQUIPMENT DESCRIPTION <br /> Upon receipt of the San Joaquin Valley Unified Air Pollution Control District's (SJVUAPCD) <br /> executed "Interim Variance/Variance Not to Exceed 90 Days Duration," Aegis personnel <br /> temporarily installed on site, on November 27, 1991, a Model V3 BACT soil venting <br /> engine, manufactured by VR Systems of Anaheim, California, with official start-up on <br /> December 5, 1991. The installation included: a) manifolding the VEW to the IC unit <br /> (Figure 2); b) installation of an alternative energy source (propane); c) installation of <br /> security fencing; and d) safety notification. <br /> Two VEW were installed by Aegis in July 1990. Well VEW-1 was installed to 24.5 feet <br /> below surface with the screened interval from 14.5 to 24.5 feet below surface. Well <br /> VEW-2 was installed to 17 feet below surface with the screened interval from 7 to 17 feet <br /> below surface. <br /> The V3 IC unit includes: <br /> 1. One (1) Ford industrial 1C engine, Model LSG-875, liquid-cooled V8, 460 <br /> cubic-inch displacement, 150 BHP. <br /> 2. One (1) Car Sound 3-way/2-way catalytic converter. <br /> 3. Computerized Stoichiometric Fuel Regulators, manufactured by VR. <br /> Operation of the IC unit includes the following: a) extraction of vapors from the ground <br /> using the engine manifold vacuum; b) combustion of vapors, as fuel, to run the engine; <br /> and c) passing the exhaust stream through the catalytic converter for final purification <br /> before emission through the exhaust stack. The engine's operation is monitored and <br /> controlled by an on-board computer system that drives the master control unit. The <br /> master control unit monitors and directs the air/fuel ratio for optimum combustion of TPH <br /> in the air stream and efficiency of the engine. <br /> AIR MONITORING <br /> The monitoring of TPH concentrations in inflow to and exhaust from the V3 treatment unit <br /> consists of three (3) test periods of approximately 15 minutes each per day, performed <br /> 1 day per week. On January 3, 7, 14, and 21, 1992, Aegis personnel monitored influent <br /> and effluent TPH concentrations for three 15-minute intervals. Concentrations of TPH in <br /> the air streams were measured by a Foxboro 128 Century Model organic vapor analyzer. <br /> The influent air to the V3 unit was drawn solely from well VEW-2, except for a 2-hour test <br /> performed on VEW-1 on January 14, 1992. <br /> 83-016J.RPT <br /> -2- <br />