Idaho Tier II Reporting: Deadline, Filing Method & Fees

Facilities in Idaho storing hazardous chemicals above EPA reporting thresholds file an annual Tier II report through Idaho OEM. Email .t2s to tier2@imd.idaho.gov.

Quick facts
Email .t2s file
Filing deadline
Mar 1 (federal baseline)
Accepts .t2s file
Yes
Filing fee
No fee
Portal
SERC email
LEPC copy required?
Email PDF to county LEPC
Fire dept copy required?
Deliver PDF to fire department
Routing details sourced from official Idaho and EPA documentation — confirm current guidance with Idaho’s agency before submitting, as requirements can change.
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Prepare your Idaho Tier II filing in HazRecord

Organize chemical inventory, SDS records, and threshold tracking — then generate a ready-to-submit .t2s file.

Before submitting, we recommend independently validating the file using EPA’s own Tier2 Submit software to confirm it opens and validates as expected — good practice for any compliance filing, regardless of which tool prepared it.

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Related reading
Do I need to file Tier II? A simple facility checklistUnderstanding Tier II reporting thresholdsManaging Tier II for multiple clients? See our founding consultant program
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