New Hampshire Tier II reporting: how and where to file
Upload your Tier2 Submit file and its attachments through the SERC's New Hampshire Tier II Portal.
From New Hampshire State Emergency Response Commission (SERC), read on the state's own page · September 26, 2026
What New Hampshire asks for
Each point below is followed by the state's own words, so you can check it against the source.
How to file
Upload your Tier2 Submit file and its attachments through the SERC's New Hampshire Tier II Portal.
“The New Hampshire SERC has provided this online portal in order to upload electronic Tier II Submit files along with accompanying documents to satisfy the SERC reporting requirement.” 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 New Hampshire'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.
New Hampshire Tier II FAQ
How do I file Tier II in New Hampshire?
Upload your Tier2 Submit file and its attachments through the SERC's New Hampshire Tier II Portal.
More on New Hampshire
Tier II in other states
Sources
New Hampshire'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 New Hampshire State Emergency Response Commission (SERC) before you file. General guidance, not legal advice.
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