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Corrective Action Plan Page 10 Former Manna Pro Site Project No 207 3 February 16,2001 I4.0 SURFACE SYSTEM INSTALLATION & OPERATION I4.1 Equipment Installation The surface equipment for the remedial system will be installed once the requisite wells have been constructed Prior to start-up of the remedial system, a temporary electrical service will be installed to provide electricity for the equipment A fenced equipment compound will be constructed to house the pumps, compressor, manifolds, and process vapor treatment equipment The compound will be located near the existing storage shed as shown on Figure 3 The pipe runs connecting the sparge and vapor extraction wells to I the respective manifolds will, for the most part, be laid in shallow trenches and buried in order that the operation of the remedial system will not unduly interfere with the ongoing operations of Cutter Lumber, the owner of the site 41.1 Carbon Unit/ICE Installation I Two, 1,000-pound activated carbon filtration units will be installed to remove hydrocarbons from the vapor extracted from the vapor extraction well The primary unit will be used to remove hydrocarbon vapors from the air stream while the second will be used as a polish unit Upon completion of loading-activated carbon is considered "spent" if it adsorbs 15-20% of its weight in hydrocarbons-the carbon from each unit will be removed and disposed of in an appropriate fashion The process air will be extracted from the ground using a regenerative type blower capable of producing 150 SCFM and 6 to 8 inches of Mercury vacuum In the event that vapor extraction yields in excess of 20 pounds per day of evolved petroleum hydrocarbons, the carbon units will be replaced with an Internal Combustion (IC) engine to combust the gasoline laden vapors I The internal combustion engine would consist of a six cylinder, propane powered engine with a vacuum pump capable of producing approximately 120 cubic feet per minute of air flow and produce a vacuum of 6 to 8 inches of mercury One 500 gallon propane tank Iwill supply fuel to the ICE 4.1.2 Sparge Pump Installation A sparge pump will be installed inside of the remedial compound It will consist of a 2 5 HP Compressor with an attached surge tank The compressor will be capable of I producing 3-5 SCFM of airflow at the face of the screened interval at the bottom of the wells Thus, the pressure applied at the wellhead should be between 8 and 11 pounds per square inch to displace the water in the blank casing • I2937 Venernan Ave,#B240 Geo-Phase Environmental Inc Phone(209)569-0293 Modesto, CA 95356 Fax(209)569-0295 I