As 2026 approaches, Minnesota facilities should prepare for a full slate of environmental reporting requirements and important regulatory changes. Staying ahead of these developments is critical to avoid compliance risks and operational delays. This month’s E-news highlights key State and Federal reporting deadlines for 2026 and beyond, and notable regulatory outlook developments as of 2026.

2026 Reporting: Regulatory Deadline Reminders

• January 30 – Semi-Annual Monitoring/Deviation Reports

• January 31 –

• • Annual Compliance Certification Reports

• • Annual Report (if required by permit)

• March 1 –

• • Tier II Emergency and Hazardous Chemical Inventory Report

• • Title V Semi-Annual Monitoring Report

• • MACT Compliance Reports

• • NSPS Compliance Reports

• • Hazardous Waste Report

• • Hazardous Waste Self-Certification Period Ends for Small Quantity Generators (SQGs)

• March 31 –

• • Annual Report NPDES/SDS Industrial storm water Multi-Sector General Permit

• • Green House Gas Emissions Report (40 CFR Part 98)

• April 1

• • Air Emissions Inventory

• • Title V Compliance Report

• July 1 – Toxics Release Inventory (TRI) Report (EPCRA)

• July 30 – Semi-Annual Monitoring/Deviation Reports

Reporting Year 2026 and Beyond: Minnesota Specific Reminders

• Air Toxics Reporting

• • Annual HAP Reporting for 7 County Metro only starting RY 2026 (Submittal April 1st of 2027)

• • Does not include Registration Option B Facilities

• Air Toxics Regulations

• • Final rule expected in 2026

• • Will likely focus on EJ areas in 7 county metro

• Cumulative Impacts

• • Final rule expected in 2026

• • Will apply to the 7 County Metro area + Duluth/Rochester

• • “Cumulative impact analysis” required in <1 mile of EJ area

• • Possibility up to 89 facilities affected.

• Odor Regulations

• • Will apply to the 7 County Metro area

• • Odor Plans for “Objectionable Odors”

• • Final rule in 2026 is possible but unlikely – Potentially 2028

Don’t Get Caught Off Guard: Key Environmental Outlook Updates for 2026

Regulatory changes are coming fast in 2026 and they could impact your compliance plans, permitting timelines, and operational strategies. Here’s some of the topics to watch:

• Hazardous Waste

• • Mandatory e-Manifest filing now in effect

• • PFAS compounds expected to be added to RCRA and a final rule on open burning/detonation anticipated by April.

• Water Programs

• • Clean Water Act Facility Response Plan deadlines may shift, but major revisions are under consideration, including threshold changes and planning distance models.

• Air Quality

• • PM_2.5 standard rollback likely (from 9.0 µg/m³ to 12 µg/m³), with litigation expected

• • PSD/NSR permitting reforms could streamline approvals for new projects

• • Regional Haze program restructuring continues, with SIP actions and litigation pending

• Climate & GHG

• • EPA proposes rescinding the Endangerment Finding and pausing GHG reporting for most sectors—potentially reshaping climate compliance

• PFAS

• • Expanded TRI reporting obligations remain

• • New drinking water standards finalized, and stormwater monitoring requirements under review

• Technology Transitions

• • Proposed extensions for HFC phase-down deadlines could affect refrigeration and HVAC sectors

Trinity is Available to Help – Reporting Assistance and Complimentary Webinar

Navigating the annual environmental reporting season demands meticulous planning, detailed preparation, and flawless execution from someone who understands local regulatory nuances. Trinity’s unparalleled compliance expertise and extensive industry knowledge across all environmental media and reporting categories ensure access to the very best resources to streamline compliance with all federal, state and local regulations, consistently and accurately. Contact the Trinity Minnesota office for any of your environmental reporting, compliance, and permitting assistance needs.

For assistance with understanding the regulatory outlook heading into 2026, register for our complimentary webinar Environmental Regulatory Outlook: Minnesota – Hot Topics and Annual Compliance Reporting Updates for Planning Your 2026, presented by Russell Novotny on January 13, 2026. We’ll explore upcoming regulatory changes, potential challenges, key reporting deadlines (Federal, State, and Miscellaneous), and practical strategies to help you prepare for a smoother compliance season.

If you have any questions about 2026 regulatory deadlines or environmental updates, how to request a quote, or for more information about the webinar please contact Garrison Pierce or Trinity’s Minneapolis Office at 651.275.9900.