ARCHIVED REPORTS_XR0010350 - Laserfiche WebLink

Home Browse Search

' The following additional items are presented as per the "PRELIMINARY INSTRUCTIONS FOR THE APPLICATION FOR AUTHORITY TO CONSTRUCT AND PERMIT TO OPERATE (APF-20) 11 : C. I. Equipment Location Drawin - See Figure 2 (attached) ' C. 2 . Description of Equipment - Parameter Make Model Size Type Engine Ford CSG-649 300 in3 1-6 1 Blower Roots 865-105-120 N/A 33 U-RAI Carburetor OHG X-450 450 cfm air/vapor Fuel control module IMPCO FCP-1 N/A Oxygen Catalyst Car Sound 704 19 X 10 X 2 3 Way ' C. 3 . Description of Operation - The system consists of a blower and an internal combustion engine The negative pressure side of the blower is connected to a vapor recovery well, which is established in the center of the contaminated zone (Figure 2 - Site Plan) . The vapor recovery well consists of 2" diameter, schedule 40 PVC well casing which is screened with 0. 020" slots on 0. 25" centers. The screened portion of the casing extends from 70 feet to 5 feet below surface grade and from 5 feet to the surface extends blank casing. The annular space between the casing and the 811 diameter pilot boring is packed with #2/12 monterey sand. The top of the well is sealed with ' bentonite and concrete which is capped with a concrete apron and a lockable, traffic-rated well cover. A schematic representation of the recovery well design is depicted in Figure 3 . ' Under the suction force of the blower, air displacement towards the vapor recovery well takes place. The hydrocarbon laden air from the well passes through a drop-out can that intercepts moisture and sediment, a particulate filter that removes fine airborne sediment, and is then drawn into the carburetion system of the engine. In the event of a low oxygen content content for well vapors, an adjustable valve for air introduction is provided. Under normal operating conditions, the engine runs at approximately 2 , 500 revolutions per minute (RPM) which generates an engine exhaust