metal casting industry chemical releases and transfers iv release transfer profile this section is designed to provide background information on the pollutant that are reported by best source of comparative informat ion toxic inventory tri pursuant emergency planning community right know act includes self facility data for over 600 chemicals facil ities within sic codes 20 through 39 manufacturing industries have more than 10 employees above weight based reporting th resholds required report site off presented sector notebooks derived from e most recently available 1995 year which chemi cals focuses primarily each because requires consistent regardless it an excellent tool drawing comparisons across type amount media receptor eac h released or transferred although notebook does not present historical regard ing time please note in general