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George's Service <br /> Remedial Action Work Plan <br /> Project No.425.2 <br /> June 30,2011 <br /> • Intrinsic permeability of the gravel backfill in excavation area(estimated to be 104) is <br /> within suitable range for SVE. <br /> • Volatility of petroleum constituents -TPH-g and BTEX are contaminants of concern: <br /> o Boiling point of TPH-g of 40 to 225°C indicates effective vapor/dissolved <br /> phase partitioning; <br /> o Henry's Law constants greater than 100 atmospheres <br /> o Vapor pressures of higher than 0.5 mm Hg. <br /> GTI conducted a pilot test in 2009, where during a four day test period, SVE was determined <br /> to be a viable remedial technology for the site. <br /> Concerns and Limitations <br /> The system is unlikely to show any limitations for this specific site. <br /> Cleological Technics PIC. 13 <br /> 4252 RAP.docx <br />