['M.', 'Meckler', '(3)', 'sensory', '(odor)', 'studies', '(4)', 'environmental', 'perception', 'surveys.', 'We', 'found', 'no', 'pronounced', 'difference', 'in', 'pollutant', 'concentrations', 'between', 'the', 'study', 'and', 'control', 'areas,', 'and', 'no', 'odors', 'in', 'either', 'type', 'of', 'area.', 'The', 'VOC', 'concen-', 'trations', 'were', 'low', 'in', 'both', 'study', 'and', 'control', 'areas', 'and', 'provided', 'no', 'basis', 'for', 'a', 'cause-and-effect', 'relationship', 'between', 'VOC', 'concentrations', 'and', 'complaints.', 'There', 'was,', 'however,', 'a', 'noticeable', 'difference', 'between', 'the', 'areas', 'in', 'the', 'comfort.', 'and', 'environmental', 'perception', 'survey.', 'In', 'the', 'study', 'work', 'areas', 'the', 'perceived', 'temperature', 'was', '“too', 'hot,"', 'humidity', '“too', 'low,"', 'and', 'air', 'movement', '"too', 'little."', 'The', 'overall', 'comfort', 'in', 'the', 'study', 'work', 'areas', 'was', 'rated', 'poor.', 'To', 'reduce', 'these', 'discomforts,', 'we', 'recommended', 'adjustments', 'of', 'the', 'heating', 'and', 'air-', 'conditioning', 'system', 'to', 'ensure', 'comfortable', 'temperature,', 'humidity,', 'and', 'air', 'movement', 'throughout', 'the', 'building.', 'Analysis', 'of', 'Switch', 'Failure', 'Industrial', 'Client', 'IITRI', 'Project', 'C08668', 'January-September', '1982', 'The', 'first', 'phase', 'of', 'this', 'investigation', 'sought', 'to', 'evaluate', 'the', 'impact', 'of', 'the', "client's", 'plant', 'operation', 'on', 'ambient', 'air', 'quality', 'in', 'the', 'plant,', 'and', 'identify', 'those', 'work', 'areas', 'that', 'might', 'present', 'possible', 'health', 'risks', 'to', 'the', 'workers.', 'The', 'survey', 'indicated', 'that', 'most', 'of', 'the', '99', 'major', 'chemical', 'compounds', 'identified', 'in', 'the', 'plant', 'ambient', 'air', 'by', 'gas', 'chromatographic-mass', 'spectrometric', '(GC-MS)', 'analysis,', 'were', 'well', 'below', 'the', 'OSHA', 'levels', 'for', 'workplace', 'exposure.', 'However,', 'some', 'of', 'these', 'compounds', 'are', 'carcinogens', 'or', 'suspect', 'carcinogens,', 'and', 'include', 'dichloromethane,', 'furfural,', 'toluene,', 'benzene,', 'and', 'propanol.', 'The', 'data', 'obtained', 'from', 'the', 'initial', 'survey', 'suggested', 'that', 'efforts', 'be', 'made', 'to', 'improve', 'the', 'quality', 'of', 'the', 'ambient', 'air', 'in', 'the', 'plant,', 'especially', 'in', 'the', 'photo', 'imaging', 'area,', 'following', 'which', 'additional', 'sampling', 'and', 'analysis', 'would', 'be', 'performed.', 'A', 'follow-up', 'investigation', 'was', 'undertaken', 'to', 'determine', 'whether', 'recently', 'completed', 'modifications', 'to', 'the', 'plant', 'ventilation', 'system', 'had', 'an', 'effect', 'on', 'the', 'ambient', 'air', 'quality.', 'Several', 'of', 'the', 'ambient', 'air', 'samples', 'taken', 'during', 'Phase', 'I!', 'were', 'from', 'the', 'same', 'sites', 'which', 'were', 'sampled', 'during', 'the', 'initial', 'survey.', '96S908248', '-57-']