a citizens guide to airborne contaminant reporting in ontario support of regulation 127 01 discharge monitoring and ministry the environment november 2002 table contents page part 1 3 2 development 4 g183g32 why current system understanding 5 who must report what substances be reported 7 information reporter provide 9 when reports provided 10 how can public gain access 11 canada s national pollutant release inventory npri o reg 12 conclusion 13 glossary 14 appendix source sectors for 15 2a contaminants with moe based thresholds 27 2b graded manufactured produced or otherwise used mpo 28 notes appendices 31 annex definition volatile organic compounds 33