Kathleen Callahan Profile: Kathleen Callahan Events (3) November 1, 2001: Government Experts Say Environment near Ground Zero Is Not Hazardous 2001-11-01 November 26, 2001: EPA Manager Downplays Health Risks at Ground Zero 2001-11-26 March 11, 2003: EPA Refuses to Clean Firehouses near Ground Zero 2003-03-11