Colorado Tier II Reporting: Deadline, Filing Method & Fees

Facilities in Colorado storing hazardous chemicals above EPA reporting thresholds file an annual Tier II report through AccessGov. Upload .t2s to AccessGov portal.

Quick facts
Portal upload (.t2s)
Filing deadline
Mar 1 (federal baseline)
Accepts .t2s file
Yes
Filing fee
Fee required at time of submission via AccessGov — see CDPHE's separate fee-structure page for current amounts.
Portal
LEPC copy required?
Not automatically routed by AccessGov — CDPHE's own page states facilities are not required to separately report to LEPC/fire unless those specific local agencies maintain their own requirements. Check with your LEPC directly.
Fire dept copy required?
Not automatically routed by AccessGov — same caveat as lepcMethod; check with your local fire department directly.
Routing data independently sourced and verified — check Colorado’s current guidance before submitting, as requirements can change.
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Organize chemical inventory, SDS records, and threshold tracking — then generate a ready-to-submit .t2s file.

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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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