The Idaho Office of Emergency Management handles Tier II hazardous chemical inventory reporting for the state. The process itself is about as direct as it gets: build your report in EPA's Tier2 Submit software, export it as a .t2s file, and email it to tier2@imd.idaho.gov.
Who has to file, and when
Standard federal thresholds -- 10,000 pounds for hazardous chemicals, 500 pounds or the TPQ for extremely hazardous substances.40 CFR 370.10 Deadline is March 1st for the previous calendar year.
A naming collision worth knowing about
Search for "Idaho Tier II fee" and you'll likely find information about a completely different program -- Idaho's Tier II Operating Permit fee under the state's air pollution control rules. That's a separate regulatory scheme entirely, tied to air quality permits, not EPCRA hazardous chemical inventory reporting. The actual EPCRA Tier II report to IOEM doesn't carry that fee. If you're budgeting for filing costs, make sure you're looking at the right "Tier II" -- Idaho reuses the term for two unrelated things.
“I found an Idaho Tier II fee schedule online, so I owe that amount for my chemical inventory report.”
Check whether that fee schedule is for the air-permitting Tier II Operating Permit program or the EPCRA hazardous chemical inventory report to IOEM -- they share a name but nothing else.
Don't forget the local copies
Submitting to IOEM electronically doesn't automatically reach your LEPC or fire department -- Idaho's own guidance is direct about this: those reports have to be filed separately, since the LEPC and fire department don't have access to your Tier2 Submit filing the way the state office does. Save your .t2s or a generated PDF and check with each of them on preferred format.
Where HazRecord fits
HazRecord keeps your inventory and threshold tracking current so the annual export to IOEM is quick, and it flags the separate LEPC and fire department distribution as its own step rather than assuming one email covers everyone.