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Air Compressor <br /> and Reservoirm- <br /> Control LEL Gravity Flow <br /> w Panel Meter to Storm <br /> Tank full shut off Sewer and <br /> controls GW pumps Injection <br /> Trench <br /> To Total ' <br /> Fluids Pumps <br /> LEL <br /> Detector <br /> Oil/Water Separator Supplemental Activated Carbon Units Enclosed Tank for <br /> Diaphragm Approximately 160 lbs each Monitoring LEL of <br /> Low level float Pump Headspace above <br /> controls diaphragm pump Effluent <br /> EA ENGINEERING, <br /> SCIENCE,AND <br /> Figure 5. Air piping and instrumentation diagram for the groundwater Drawn Date TECHNOLOGY,INC <br /> treatment system at former Exxon RS 7-3942, North Pershing Reviewed Date 41 Lafayette Circle <br /> Avenue, Stockton, California. I I Lafayette, CA.94549 <br />