Lioy has been a central figure in understanding exposure to the air pollutant tropospheric ozone , chloroform and other toxicant exposures from shower water , hexavalent chromium wastes , and most recently , the exposures derived from the dust and smoke released in the aftermath of the September 11 attacks on the World Trade Center in 2001 . He has also been a major figure in defining some of the basic data requirements ( and providing exposure indices ) for examining human exposures within the National Children 's Study . He was a Co-Principal Investigator within the portion of the National Human Exposure Assessment Survey ( NHEXAS ) conducted in five mid-western states , led by Edo Pellizzari of Research Triangle Institute . Currently his research addresses human exposure to engineered nanotechnology consumer products and the exposure of athletes to artificial turf used on athletic fields . In addition , from 1987 to 1991 he was the Chairman of the First National Research Council ( NRC ) Committee that directly addressed human exposure issues and published Human Exposure to Air Pollutants : Advances and Opportunities , " also called " White Book . " He was Vice Chair of the NRC committee on Exposure Science that produced the report entitled " Exposure Science in the 21st Century : A Vision and A Strategy " . He was also vice chair of the WTC Technical Panel that was formed to address the issues of residential cleanup during the WTC Aftermath
September 11 attacks
September 11 attacks
Paul J. Lioy