['Rash', 'M.', 'Meckler', 'Additional', 'samples', 'were', 'taken', 'from', 'two', 'offices', 'as', 'well', 'as', 'from', 'the', 'stamping', 'plant', 'and', 'the', 'die', 'shop.', 'We', 'found', 'that', 'total', '(nonmethane)', 'hydrocarbon', 'concentrations', 'ranged', 'up', 'to', '6', 'ppm,', 'and', 'were', 'well', 'in', 'excess', 'of', 'the', 'National', 'Ambient', 'Air', 'Quality', 'Standard.', 'Chlorinated', 'hydrocarbons', 'were', 'prominent', 'in', 'all', 'the', 'samples', 'and,', 'in', 'several', 'instances,', 'represented', 'the', 'compound', 'class', 'of', 'highest', 'concentration', 'in', 'the', 'sample.', 'AS', 'a', 'group,', 'they', 'constitute', 'the', 'most', 'serious', 'potential', 'health', 'hazard', 'in', 'the', 'samples,', 'as', 'many', 'are', 'well-established', 'as', 'carcinogens', 'or', 'suspect', 'carci-', 'nogens.', 'The', 'inorganic', 'constituents', 'showed', 'a', 'decrease', 'in', 'the', 'ammonia', 'concentra-', 'tions', 'at', 'all', 'sampling', 'sites.', 'A', 'small', 'reduction', 'was', 'indicated', 'for', 'the', 'other', 'jons', 'except', 'chlorides.', 'In-Situ', 'Decontamination', 'by', 'Radio', 'Frequency', 'Heating--', 'Field', 'Test', '-', 'U.S.', 'Air', 'Force', 'Space', 'Division', 'Contract', 'F04701-86-C-0002', 'IITRI', 'Projects', 'C06666,', 'C06676', 'August', '1987-April', '1988', 'The', 'objective', 'of', 'this', 'program', 'is', 'to', 'demonstrate', 'the', 'feasibility', 'of', 'the', 'radio', 'frequency', 'in', 'situ', 'soil', 'decontamination', 'process', 'by', 'conducting', 'a', 'field', 'test;', 'determine', 'the', 'decontamination', 'efficiency', 'and', 'contaminant', 'migration', 'effects,', 'if', 'any;', 'and', 'heat', 'to', 'a', 'depth', 'of', '6', 'to', '8', 'ft.', 'The', 'approach', 'is', 'to', 'prove', 'the', 'feasibility,', '500', 'cu.', 'ft', 'of', 'contaminated', 'soil', 'was', 'heated', 'to', 'a', 'temperature', 'range', 'of', '150-160°C', 'using', 'a', '40', 'RW', 'mobile', 'RF', 'power', 'source.', 'The', 'soil', 'contained', 'waste', 'jet', 'fuel', 'spilled', 'as', 'a', 'result', 'of', 'simulated', 'aircraft', 'fire', 'training', 'drills.', 'The', 'average', 'depth', 'of', 'treatment', 'was', '7', 'ft', 'and', 'the', 'area', 'of', 'the', 'test', 'volume', 'was', '72', 'ft?,', 'The', 'decontamination', 'efficiency', 'was', 'determined', 'by', 'comparing', 'the', 'results', 'of', 'soil', 'sample', 'analysis.', 'The', 'soil', 'samples', 'were', 'obtained', 'as', 'a', 'function', 'of', 'depth', 'both', 'before', 'and', 'after', 'the', 'test.', 'Conta-', 'minant', 'migration', 'effects', 'were', 'evaluated', 'by', 'sampling', 'of', 'soil', 'in', 'tuozone.', 'These', 'were', 'the', 'immediate', 'area', 'outside', 'the', 'heated', 'volume', 'and', 'the', 'soil', 'underlaying', 'the', 'treated', 'volume.', 'Movement', 'of', 'contaminants', 'into', 'the', 'test', 'zone', 'was', 'determined', 'by', 'injection', 'of', 'tracer', 'into', 'the', 'soil', 'at', 'a', 'location', 'outside', 'the', 'heated', 'volume.', 'A6S908L9']