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Owners or operators of facilities with hazardous chemicals on hand in quantities equal to or greater than set threshold levels must submit Tier II forms between January 1 and March 1 for the previous calendar year.

Please view the FOIA-TIER II Hazardous Chemical Search, as it provides information concerning chemical facilities having filed Tier II Reports for the State of Illinois.

The purpose of the Tier II form is to provide state and local officials and the public with specific information on hazardous chemicals present at your facility during the previous calendar year.

The Illinois Emergency Management Agency and Office of Homeland Security (IEMA-OHS) requires all regulated facilities to submit (Tier II) information electronically by using Hazconnect™, IEMA-OHS's online filing system. Each facility's username is unique to its physical (9-1-1) address.

IEMA-OHS also requires all 302 (EHS) and 311 (SDS) submissions be made through HazconnectTM. Print out completed 302 and 311 reports, sign and submit to the LEPC and fire department. If desirable, the LEPC can accept Tier II Reports, via email, provided they are scanned and signed copies of the original, generated directly from Hazconnect™. LEPC and fire department contact information is located in the upper right side of this webpage. DO NOT SUBMIT HARD COPIES TO IEMA AS HARD COPIES ARE NOT ACCEPTED AND WILL BE SHREDDED.

2023 facility submission instructions are in the HazconnectTM Sidebar Resources Section. The Sidebar button is a green question mark located on the right side of each HazconnectTM Screen. Facility submission instructions are also available in the Resource Links below.

Facilities that initiated, but did not complete, 2023 Tier II Update reports must certify the updates in order to initiate a 2023 Tier II Annual report.

SYSTEM REQUIREMENTS for the Hazconnect™ Online Reporting System:
  • Must use Internet Explorer 11 (non-compatibility mode) or higher, Firefox 20 or higher, or Chrome 26 or higher. Using older versions may create problems.
  • Mac users, with Safari, can use Chrome or Firefox versions listed above.
  • Need Adobe Acrobat Reader to use this system. Download the Adobe Reader.
  • Need to enable JavaScript and turn off the pop-up blocker in your browser.
  • If any problems, contact your technology desk to verify whether you have these requirements.

SITE PLAN (MAP) ATTACHMENTS: Site plans must meet minimum requirements. In Hazconnect™, a site plan is a one-page diagram of where the Tier II chemicals are stored within the facility's site/location. An up-to-date site plan (map) may be attached in Step 5 on the Facility’s Home Page. Site map requirements, and sample site maps, are listed in the Resource Link Section below.

Electronic Safety Data Sheets (SDSs) shall be attached to current (2023) Tier II chemical entries in the Hazconnect™ Chemical Section (Step 2 of filing process). Electronic SDSs may be obtained from your chemical supplier or manufacturer and must listed the new applicable physical and health risks. Hazconnect™ will accept PDF files no larger than 5 MB. If there are multiple SDSs for one chemical entry, and the SDSs contain the same physical hazards and health effects, attach the SDS containing the highest percentage of the main chemical component(s). In other words, the worst-case scenario SDS should be attached.

Facilities that reported in 2022 may use their username and password information to access Hazconnect™ (see link below). Enter the Username and Password on the Login screen. The latest submitted report’s information will be brought forward for 2023 Tier II ANNUAL report editing. Pay close attention to chemical and contact information as these are the two sections that most-often require editing.

If you don't remember your username and password, please e-mail a request to Include the facility name and physical address in the request. Due to security concerns, if a consultant requests a username/password on behalf of their client facility, IEMA must receive the request from a FACILITY representative using a facility-related e-mail address. The facility representative may "cc" the consultant in the request and ask that IEMA-OHS "reply to all" when responding.

Facilities that reported in 2022 but are not subject to reporting for 2023 should make the facility inactive in Hazconnect™ or contact IEMA at

Facilities that didn't file in 2022 but are subject to reporting for 2023 should contact IEMA, at for a new or reactivated state-issued username and password. In order to set up a user profile, please include the facility name, physical address, city and zip code, as well as a facility representative's name, telephone number, and e-mail address.

Facilities that have moved to a new location in 2023 should contact IEMA-OHS, at for a new state-issued username and password. DO NOT change the address assigned to your username. In order for IEMA to set up a new user profile, please include the facility name, physical address, city and zip code, as well as a facility representative's name, telephone number and e-mail address. Note in the e-mail that the facility relocated in 2023.

New facilities should contact IEMA no later than 60 or 90 days, to request a new account for Hazconnect™, depending on the chemicals involved. Existing & new facilities are required to submit a 311 (90 days) or 302 (60 days) Report on Hazconnect™, in a timely manner. Please see the CHEMICAL INVENTORY REPORTING REQUIREMENTS

After you have completed your 2023 ANNUAL Tier II submission, PRINT out hard copies, sign at the bottom of Page 1, and submit the report, as well as new or updated site plans and SDSs, to your LEPC and fire department (links in upper right corner of this webpage). DO NOT SUBMIT HARD COPIES TO IEMA-OHS. HARD COPIES ARE NOT ACCEPTED AND WILL BE SHREDDED.

All facilities within the State of Illinois are required to submit Annual Reports beginning January 1st  each year. IEMA-OHS reserves the right to provide Federal EPA notification of delinquent accounts, which fail to submit Annual Reports by March 1st each year.

Inquiries should be made to Mr. David Martin, IEMA-OHS Hazardous Materials Unit Manager, at 217-558-0559 or