| Name or Facility | Type of Notice/Event | Publication Dates | Public Comment? | Additional Information |
|---|---|---|---|---|
| Multi-County Notices | ||||
| Crown Point Wastewater Treatment Plant | Land Application Permit Public Notice [PDF] | 10/02/2026 - 11/01/2026 | Yes | Permit Number: 000272 Project Manager: O'Connell, Morrighan Counties: Lake County and Porter County |
| Jasper | ||||
| Amazon Data Services, Inc. |
Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] |
09/24/2026 - 11/16/2026 | Yes |
Permit Number: 073-50413-00077 Virtual Public Hearing |
| NIPSCO R.M. Schahfer Generating Station | 09/04/2026 - 10/22/2026 | Yes | Permit Number: IN0053201 Project Manager: Etter, Heidi E Virtual Public Hearing: Wednesday, October 7, 2026 5:00 p.m. ET/4:00 p.m. CT (See Public Hearing Notice for connection details) |
|
| EM Materials, LLC | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 09/02/2026 - 10/02/2026 | Yes | Permit Number: 073-50318-00040 |
| Lake | ||||
| Draft Onroad Motor Vehicle Emissions Budget (MVEB) Margin of Safety Reallocation for the Indiana Portion (Lake and Porter Counties) of the Chicago-Naperville, IL-IN-WI, 2008 8-Hour Ozone Maintenance Area | Legal Notice of Comment Period and Opportunity to Request a Public Hearing for a Draft Document from OAQ Air Programs Branch [PDF] | 10/15/2026 - 11/16/2026 | Yes | The document "Draft Onroad Motor Vehicle Emissions Budget (MVEB) Margin of Safety Reallocation for the Indiana Portion (Lake and Porter Counties) of the Chicago-Naperville, IL-IN-WI, 2008 8-Hour Ozone Maintenance Area" is available on the IDEM Lake and Porter Counties Requests for Redesignation and Maintenance Plans web page. |
| Draft Exceptional Events Demonstration Addressing the 2024 Annual Primary Fine Particles (PM2.5) National Ambient Air Quality Standard (NAAQS) for Lake County, Indiana | Legal Notice and Opportunity for Comment on a Draft Document from OAQ Air Programs Branch [PDF] | 10/07/2026 - 11/09/2026 | Yes | The document "Draft Exceptional Events Demonstration Addressing the 2024 Annual Primary Fine Particles (PM2.5) National Ambient Air Quality Standard (NAAQS) for Lake County, Indiana" is available on the IDEM Particulate Matter Air Quality Designations web page. |
| Huhtamaki Inc. | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 10/06/2026 - 11/05/2026 | Yes | Permit Number: 089-50264-00228 |
| PositiveCarry LLC dba Chicago Flame Hardening | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 10/05/2026 - 11/04/2026 | Yes | Permit Number: F089-50628-00380 |
| Tradebe Treatment and Recycling, LLC | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 10/02/2026 - 11/01/2026 | Yes | Permit Number: 089-49673-00345 and 089-50022-00345 |
| US Steel Corp. - Gary Works | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] Notice of Public Hearing [PDF] |
10/01/2026 - 11/09/2026 | Yes | Permit Number: 089-50605-00121 and 089-50609-00121 Virtual Public Hearing: Wednesday, November 4, 2026, 6:00 p.m. CT (See the Public Hearing Notice link for connection details.) |
| Stericycle, Inc | 09/21/2026 - 10/06/2026 | No | Permit Number: 45-41 Project Manager: Ford, Hannah R |
|
| CarbonFree | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 09/17/2026 - 10/17/2026 | Yes | Permit Number: 089-50044-00738 |
| City of Crown Point Southeastern Wastewater Treatment Plant | NPDES Final Permit Public Notice [PDF] | 09/17/2026 - 10/05/2026 | No | Permit Number: IN0064953 Project Manager: Klein, Alyce |
| Unilever Manufacturing (US), Inc. | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 09/09/2026 - 10/09/2026 | Yes | Permit Number: 089-50437-00229 |
| La Porte | ||||
| Aero Metals, Inc. |
Notice of 30-Day Period of Public Comment for Draft Air Permit [PDF] |
10/15/2026 - 11/14/2026 | Yes | Permit Numbers: 091-50073-00074 |
| La Porte Wastewater Treatment Plant | Land Application Permit Public Notice of Decision [PDF] | 10/15/2026 - 10/30/2026 | No | Permit Number: IN LA 000095 Project Manager: O'Connell, Morrighan |
| Enviro Recycling LLC |
Notice of 30-Day Period of Public Comment for Draft Air Permit [PDF] |
10/08/2026 - 11/07/2026 | Yes | Permit Numbers: 091-50830-00198 |
| Lavender Fields Holdings, LLC |
Notice of 30-Day Period of Public Comment for Draft Air Permit [PDF] |
09/25/2026 - 11/23/2026 | Yes |
Permit Numbers: 091-50515-00195 and 091-50636-00195 Virtual Public Hearing |
| Nexus IN RNG - La Porte, LLC (Kingsbury Storage) | 09/21/2026 - 10/21/2026 | Yes | Permit Number: IN LA 000926 Project Manager: Meulen, Nicholas |
|
| Newton | ||||
| Newton County Landfill | Notice of 30-Day Public Comment Period for Draft Air Permit [PDF] | 09/18/2026 - 10/18/2026 | Yes | Permit Number: T111-49905-00017 |
| Porter | ||||
| Valparaiso Dept. of Water Works The Parks Well Field Project |
Drinking Water Construction Permit Public Notice [PDF] | 10/16/2026 - 11/16/2026 | No | Permit Number: 13155 IDEM ID Number: 5264029 Corps of Engineers ID Number: 10100303 Project Manager: Prater, Matthew |
| Valparaiso Dept. of Water Works VCU Water System Upgrades |
Drinking Water Construction Permit Public Notice [PDF] | 10/16/2026 - 11/16/2026 | No | Permit Number: 13163 IDEM ID Number: 5264029 Corps of Engineers ID Number: 12600872 Project Manager: Prater, Matthew |
| Aquestive Therapeutics, Inc | NPDES Draft Permit Public Notice [PDF] | 09/30/2026 - 10/30/2026 | Yes | Permit Number: INP000264 Project Manager: Wren, Kira |
| Burns Waterway Harbor | 401 Water Quality Permit Public Notice [PDF] | 09/21/2026 - 10/12/2026 | Yes | IDEM ID Number: WQC001520 Project Manager: Wrin, Graham C |
| Louis Dreyfus Company Burns Harbor LLC | Notice of 30-Day Period of Public Comment for Draft Air Permit [PDF] | 09/14/2026 - 10/14/2026 | Yes | Permit Number: 127-50571-00025 |
| Valparaiso Dept. of Water Works VCU Water System Upgrades |
Drinking Water Construction Permit Public Notice [PDF] | 09/03/2026 - 10/02/2026 | No | Permit Number: 13163 IDEM ID Number: 5264029 Corps of Engineers ID Number: 12600872 Project Manager: Prater, Matthew |
This page is designed to provide public access to all agency public notices for this region as required by statute or rule including: permitting, rulemaking, meeting and hearing notices. Click highlighted links to view additional information related to the notice. Unless otherwise noted, contact information is included on the notices.
The IN.gov News and Events Calendar provides information on public meetings that do not require public notice.
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Rules and Regulatory Notices
IDEM regularly notifies the public about rulemaking activities via official public notices in the Indiana Register. Relevant information, public hearing dates, and agency points of contact are included in the notices.
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A nonrule policy document (NPD) is intended to clarify for the public IDEM's interpretation of an environmental statute or rule. IDEM Nonrule Policies are not intended by the agency to have the effect of law, however, per Indiana Code 13-14-1-11.5, they are made available for public comment on the agency internet website for at least 45 days. After the comment period ends, the appropriate state environmental board(s) are briefed, and 30 days later the NPD(s) become effective and are sent for publication in the Indiana Register.
Citizen Involvement
The Citizens’ Guide to IDEM describes the agency’s permitting and environmental cleanup programs. The guide details how citizens can participate when IDEM makes decisions about issuing permits, conducting cleanup actions, preparing environmental reports and plans, and writing environmental rules.