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Pilot Testing Report and Conceptual Corrective Action Plan July 15, 1994 <br /> Manna Pro, 4004 South El Dorado, Stockton, CA 28 <br />' Thermal oxidation can operate at high hydrocarbon concentrations (>12,000µg/1) by utilizing <br /> the hydrocarbons as fuel for combustion Thermal oxidation is not economical at lower hydrocarbon <br />' concentrations due to energy costs Vapor concentrations over 16,00011 g/I must be diluted <br /> prior to thermal oxidation treatment It should be noted that the hydrocarbon mass loading rate <br /> should decrease significantly during the first several weeks of system operation The rate of this <br /> decrease can not be projected with any degree of certainty without sustained operational and <br />' laboratory analytical data Typically, systems are operated using destructive technologies (thermal <br /> or catalytic oxidation) during the initial stages of system operation, then activated carbon is Used <br /> once hydrocarbon levels have decreased below 250l4g/I <br /> 1 <br /> The actual removal rates are effected by water table fluctuations, volatilization rates, soil <br />' characteristics and/or natural biodegradation The estimated removal rates are intended to provide <br /> an estimate of the magnitude of the hydrocarbons which would be removed by a sal vapor <br />' extraction system during the initial stages of vapor extraction Removal rates will decline over time <br /> This estimate is required in order to evaluate the need for vapor treatment technologies and overall <br /> feasibility of soil vapor extraction <br /> 634 Permitting <br />' Permitting of the system will be coordinated through the SJCPHS Prior to final system design, the <br /> air and groundwater discharge limits will be obtained from all applicable regulatory agencies Based <br /> on the requirements of the discharge limits, a treatment system (or systems) will be specified and a <br /> monitoring program prepared The monitoring program will be used to optimize system <br />' performance and to ensure compliance to all regulations <br />' 7.0 CORRECTIVE ACTION PLAN <br /> 71 Final System Design <br /> A design package will be developed that will contain a Piping and Instrumentation Diagram, a <br />' Hazard Classification Area Diagram, an Electrical One-Line Diagram, an Equipment Layout Diagram, <br /> technical discussion, installation details, manufactures literature and engineering calculations The <br />' document will also contain necessary information to permit the system installation <br />' 2819R034 070 <br /> GROUNDWATER <br />' TECHNOLOGY, INC <br />