State sheet · MT
Tier II reporting requirements in Montana
- Deadline
- 1 March — federal only
- Takes our file
- Via E-Plan
- Own thresholds
- No — federal
- Fee
- None
- Filing route read
- 2026-09-11
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How Montana takes it
Montana takes it through E-Plan, and E-Plan imports the file we build. The state will not accept a paper copy — but your county may want one.
The file we build is the one this state works from.
The filing is due 1 March each year and covers the calendar year before it. Filing with Montana closes the state’s side only. Whether your local committee and fire department also get it is up to your county — ask them, and post each a copy if they do not take the electronic filing.
Before you send it — what else Montana asks for
Montana counts your report as filed only once DEQ can actually see it in E-Plan, so submit early enough to check it landed rather than on the last afternoon. If you stayed under the thresholds for the whole calendar year you do not file at all, and a site that closed or decommissioned a tank does not need to tell the state — but any part of a year above the threshold means a report. Montana collects no fees, and it says plainly that it “follows EPA requirements and does not have state-level requirements”. Filing through E-Plan closes the state’s side only. Each of Montana’s 56 counties decides for itself whether it will take an electronic filing, so ring your local emergency planning committee (or tribal committee) and your fire department and ask — and if they cannot take it electronically, a paper copy has to go to each of them. Montana publishes a contact list for all of them.
Does Montana set its own limits?
Montana's own agency says it uses the federal thresholds, and we read that page rather than assuming it. We have not gone behind it to the state code, so we say that too.
Montana does not collect fees and does not accept hard copies.
The words we read
Montana DEQ, EPCRA: “Montana follows EPA requirements and does not have state-level requirements.”
Montana DEQ EPCRA page (read 2026-09-07)
Where we read this
- Montana DEQ, EPCRA page (deq.mt.gov), read 2026-09-01 and 2026-09-11. On who gets copies: “Regarding local filing, the decision to accept online reporting to LEPCs or TERCs and fire departments has been left up to individual jurisdictions … You will need to contact the appropriate Local Emergency Planning Committee (LEPC — there is one in each of Montana’s 56 counties) and fire department to see if they can accept electronic filings. If they cannot accept electronic filings, a paper copy will need to be sent to the LEPC and fire department.” On section 302: “Filing your 302 report via E-Plan meets your SERC requirement, but local LEPCs and Fire Departments may require a different submittal.” On when a filing counts: “A facility’s Tier II Report submittal will be deemed complete when the Montana Department of Environmental Quality can view its electronic submittal on E-Plan.” On a quiet year: “You must report for any part of a calendar year that you stored chemicals above the reporting threshold … a report is not needed if you did not exceed the reporting threshold for the entire calendar year,” with “no notification … needed for closed or decommissioned facilities or tanks.” The page names no filing deadline of its own, so we do not claim Montana has said one.E-Plan, User’s Guide, read 2026-09-07: “You can use the Import Tier2 function to import an existing Tier2 Submit export file (ZIP), Tier2 submission file (T2S), or CAMEO export file (ZIP) into your E-Plan account,” and its FAQ has a page for exactly that. So the file we build goes across instead of being retyped; you still complete the fields Montana adds and pass E-Plan’s validation before submitting.Checked 2026-09-11
- Montana DEQ, EPCRA: “Montana follows EPA requirements and does not have state-level requirements.”State guidance — the code wins where they differ · Montana DEQ EPCRA page (read 2026-09-07)
- Montana’s own Tier II pageWe can be right today and the state can change tomorrow. This link does not go stale.
If something here is wrong, the checker has a way to tell us on every answer screen. We would rather be corrected than confident.
Find out whether you have to file
Tell us what you keep on site and we work it out against the federal list and Montana’s own rules, showing the regulation behind every number.
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