Connecticut Tier II reporting: how and where to file
File in the Hazconnect Tier II Manager system, due March 1. Tier2 Submit by email is accepted only when unique circumstances prevent using Hazconnect.
From Connecticut State Emergency Response Commission, with the Department of Energy and Environmental Protection (CT DEEP), read on the state's own page · September 26, 2026
What Connecticut asks for
Each point below is followed by the state's own words, so you can check it against the source.
How to file
File in the Hazconnect Tier II Manager system, due March 1. Tier2 Submit by email is accepted only when unique circumstances prevent using Hazconnect.
“The Connecticut State Emergency Response Commission and the Department of Energy and Environmental Protection uses the Hazconnect Tier II Manager system to manage EPCRA Tier II chemical inventory reports due March 1 of each year.” source
Who gets the report
You still send the report directly to your LEPC and local fire department, with a site plan and the SDSs attached.
“Facilities are still required to directly submit reports to their Local Emergency Planning Committee and local Fire Department, with Site Plan and SDS attachments.” source
“Connecticut will accept submittal of reports via EPA's Tier2 Submit Software with electronic file submissions sent to DEEP.CTEPCRA@ct.gov only f needed due to unique circumstances preventing use of the Hazconnect platform.” source
The federal rule underneath
EPCRA section 312 applies to a facility that the OSHA HazCom Standard requires to keep an SDS for a hazardous chemical present at any one time at or above 10,000 lb, or at or above 500 lb or its threshold planning quantity, whichever is lower, for an extremely hazardous substance (40 CFR 370.10(a)). The report covers the previous calendar year and is due March 1 (40 CFR 370.45). Where Connecticut's rules above are stricter, they apply on top.
The full federal picture, Tier I versus Tier II, counting and penalties, is on the EPCRA Tier II hub. The list that feeds it is the chemical inventory.
HazComFast keeps each jobsite's chemical quantities next to its safety data sheets and exports the Tier II data as an Excel workbook, a CSV file and a PDF summary.
Connecticut Tier II FAQ
How do I file Tier II in Connecticut?
File in the Hazconnect Tier II Manager system, due March 1. Tier2 Submit by email is accepted only when unique circumstances prevent using Hazconnect.
Do I still send the report to the LEPC and fire department in Connecticut?
You still send the report directly to your LEPC and local fire department, with a site plan and the SDSs attached.
More on Connecticut
Tier II in other states
Sources
- portal.ct.gov/SERC/Facility-Information/Facility-Information/Reporting-Requirements-Under-EPCRA
- ecfr.gov/current/title-40/part-370
Connecticut's requirements read on the state's own page on September 26, 2026; 40 CFR part 370 read on the eCFR the same day. States change portals and fees; confirm with Connecticut State Emergency Response Commission, with the Department of Energy and Environmental Protection (CT DEEP) before you file. General guidance, not legal advice.
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