Reporting Links General Chemical Inventory Reporting Requirements (PDF) State Emergency Response Commission (SERC) website Tier II Manager Online Submission Program Tier II Manager Online Reporting System Instructions (PDF) Tier 2 Manager Resource Links MSDS Requirements and Attachment Instructions Site Plan (Map) Requirements and Attachment Instructions US Census Bureau's NAICS Extremely Hazardous Substance (EHS) Reporting Thresholds - Appendix A to Part 355