Colorado Tier II reporting: how and where to file
Build the report in the current year's Tier2 Submit, then upload the .T2S file and pay through CDPHE's AccessGov portal. Email submissions are refused. Due by 5:00 p.m. Mountain time on March 1. A state fee is paid online in AccessGov, by credit card or e-check.
From Colorado Department of Public Health and Environment (CDPHE), read on the state's own page · September 26, 2026
What Colorado asks for
Each point below is followed by the state's own words, so you can check it against the source.
How to file
Build the report in the current year's Tier2 Submit, then upload the .T2S file and pay through CDPHE's AccessGov portal. Email submissions are refused.
“All reports must be submitted through AccessGov.” source
“All Tier II reporters create their facility's report in the EPA's newest version of the Tier2 Submit software.” source
“Email submissions will NOT be accepted.” source
Deadline
Due by 5:00 p.m. Mountain time on March 1.
“The deadline for report submission is 5:00 p.m. (MST) on March 1 each year.” source
Fees
A state fee is paid online in AccessGov, by credit card or e-check.
“Online payment will be generated through AccessGov and will accept credit card or e-check payments.” source
“Learn about the fee structure for the Tier II program.” source
State-specific rule
A report built in an older version of Tier2 Submit is invalidated and has to be resubmitted.
“Failure to complete your report in the latest software version will result in an invalidated report that will need to be resubmitted.” 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 Colorado'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.
Colorado Tier II FAQ
How do I file Tier II in Colorado?
Build the report in the current year's Tier2 Submit, then upload the .T2S file and pay through CDPHE's AccessGov portal. Email submissions are refused.
When is Tier II due in Colorado?
Due by 5:00 p.m. Mountain time on March 1.
Does Colorado charge a Tier II fee?
A state fee is paid online in AccessGov, by credit card or e-check.
More on Colorado
Tier II in other states
Sources
Colorado'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 Colorado Department of Public Health and Environment (CDPHE) before you file. General guidance, not legal advice.
Get the Binder in Order Before the Inspector Arrives. Are You Ready?
OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.
Serious Violation
$16,550
per violation (max)
HazComFast Pro
$199/mo
10 jobsites, unlimited chemicals, unlimited workers
New sign-ups are paused. The free tools below need no account, and customers can log in as usual.
Your account keeps working as usual. Cancel anytime.