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Section 311-312 Hazardous Chemical Storage Reporting (Tier II)

Chemical storage tank located outside facility building.

Environmental Protection Community Right-To-Know Act (EPCRA) Section 311/312 requires facilities that have a material safety data sheet (MSDS) for any hazardous chemicals stored or used in the work place above certain quantities to submit an emergency and hazardous chemical inventory form (TIER II) to the SERC, LEPC, and local fire department. The TIER II form is due annually on March 1st. Approximately 500,000 products have MSDS forms. 

Iowa Tier II Online

If you have any questions please feel free to contact Elonda Bacon at 515/725-0302 or e-mail her at

Forms, Instructions and Useful Resources

Forms and Instructions Useful Resources
EPA Consolidated List of Chemicals (List of List)
EPA Tier II Hardcopy Instructions EPA EPCRA Website
Iowa Tier II Hardcopy Form North American Industrial Classification System (NAICS)
 HERE Client Installation guide (public officials only)