2002 inventory of toxic air emissions for the great lakes region 122 g appendix ontario background province canada has prepared an on target compounds regional calendar year this toxics includes point area and mobile sources followed protocol source methodologies agreed upon by s technical steering committee in developing where applicable related information was collected from regulated domestic inventories statistical organizations ie statistics ministry transportation compiled using pollution development system rapids version 2 4 1 which applies reference tables emission factors factor retrieval fire 6 24 addition to 2c model nonroad2004 profiles national nei documentation were used estimate road non