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Attachment to APF-20 Application <br /> GeoAudit CV 43C4 . 1. 1 <br /> Page 4 of 4 <br /> C. 4. Operating Schedule -- The unit will be in operation 24 hours <br /> per day, seven days per week, twelve months per year, throughout <br /> the duration of the mitigation. <br /> C. S. Process Weil - The design parameters of the treatment unit <br /> allow for 100 cfm of intake vapors. A more realistic estimate, <br /> based on the lack of available subsurface oxygen, would be <br /> approximately 70 cfm. The concentration of hydrocarbon vapors in <br /> the intake stream is anticipated to be between 1, 000 and 2 , 000 ppm <br /> for the concentrations which are present in the soil at this site. <br /> The total concentration of TPH in the soil equals approximately <br /> 18 , 000 pounds of hydrocarbon contaminants; if the entire volume of <br /> TPH is removed in one year, this equates to approximately 2 pounds <br /> per hour entering the treatment unit. <br /> C. 6. Fuels and Burners Used - The unit consumes approximately 200 <br /> cubic feet of natural gas per hour. The consumption rate depends on <br /> the concentration of hydrocarbons in the well vapor. <br />' C. 7 . Flow Diagram - See Appendix 3 (attached) <br /> C. 8 . Drawings of Equipment -- See Appendices 1 and 4 (attached) <br /> 1 <br /> i <br /> M <br />