chapter 5 toxics release inventory data for original reporting industries 2000 public 1 making year to comparisons of tri in is important accurate interpretation these because the significant changes over time box lists by standard industrial classification sic code tables this also present submitted on chemical forms that report more than one manufacturing sector 2 explains epa s method analyzing multiple codes group as well no provides an overview industry 20 have been required since program began 1987 analyses added 1998 appear 4 summarizes and other waste management 1995 change off site releases measured 1988 are reviewed 1991 discussion
