Tier II hazardous chemical inventory reporting

EPCRA Sections 311/312 require the submission of a Tier II form for the storage of hazardous chemicals that exceed federal thresholds. The purpose of this form is to provide state and local emergency planning officials and the public with information on the general hazard types and locations of hazardous chemicals present at a facility during the previous calendar year.

Tier II reporting instructions

Follow the steps below to prepare and submit your Tier II report.

1. Obtain a Dun and Bradstreet Number

Colorado requires businesses to include their Dun and Bradstreet Number on their Tier II report. Colorado does not require a Dun and Bradstreet Number for local, state, or federal government entities or universities.

• Create a Dun and Bradstreet Number
• Locate your existing Dun and Bradstreet Number

Creating a Dun and Bradstreet number is free, but there is a fee to expedite the process. CDPHE does not recommend that any facility pay to receive an expedited number. The free number is often issued much earlier than 30 days. However, if you do not receive your number with enough time to meet the March 1st deadline, contact the SARA Title III Coordinator for further instruction.

2. Create your facility’s Tier II report.

All Tier II reporters create their facility’s report in the EPA’s newest version of the Tier2 Submit software.

Please download the latest software version below:

Tier2Submit Software Download

The EPA updates this software every year. Reporters must download the most recent software from the EPA each year to file a new report. Failure to complete your report in the latest software version will result in an invalidated report that will need to be resubmitted. If you have submitted a Tier II report in previous reporting years, you can import your report into the new software to populate your facility data.

Once you have created your report and it receives a green validation checkmark in Tier2 Submit, export your report as a .T2S file and proceed to the next step.

If you have questions, you can consult the Tier2 Submit tutorial.

3. Upload Report to the Tier II AccessGov Platform.

Navigate to your AccessGov Dashboard. If you do not have an account, create one following the steps below:

1. Select “Log In” at the top right of the Dashboard
2. Select “Sign up now”
3. Enter information and retrieve the verification code from your email
4. Select “Create”

Complete the Tier II submittal form and attach your .T2S file from Tier2 Submit. Once finished, proceed to payment and submission.

AccessGov assistance resources:

• AccessGov Submittal Guidance for Preparers and Responsible Officials
• AccessGov portal video tutorial

4. Submittal and payment.

Online payment will be generated through AccessGov and will accept credit card or e-check payments.

All reports must be submitted through AccessGov. Email submissions will NOT be accepted.

The deadline for report submission is 5:00 p.m. (MST) on March 1 each year.

Learn about the fee structure for the Tier II program.

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