EPA approves Maryland’s State Implementation Plan revision, updating NOX ozone season emission caps for large industrial facilities.

Date of Publication: 2025-07-24**Maryland Strengthens Air Quality Standards: EPA Approves NOX Emission Cap Revisions**

**FOR IMMEDIATE RELEASE**

Washington D.C. – The Environmental Protection Agency (EPA) has formally approved a significant revision to Maryland’s State Implementation Plan (SIP), targeting nitrogen oxides (NOX) ozone season emissions. This action, published on July 24, 2025, solidifies Maryland’s commitment to cleaner air and updates critical regulatory frameworks affecting large industrial facilities within the state.

The approved revision, identified as Maryland Submittal #24-01, focuses on the strategic re-allocation of NOX ozone season emission caps for major non-electric generating units (non-EGUs). This move is designed to enhance the state’s air quality initiatives and ensure compliance with federal mandates under the Clean Air Act.

**Financials & Scope:**

No specific dollar amounts are detailed in this regulatory approval.

The primary grantee/entity affected by this approval is the **State of Maryland**, specifically pertaining to industrial facilities operating within its jurisdiction identified as large non-electric generating units.

**Key Takeaways:**

* The EPA has officially approved Maryland’s State Implementation Plan (SIP) revision, Maryland Submittal #24-01. (Ref: Maryland Submittal #24-01)

* This revision specifically addresses the re-allocation of nitrogen oxides (NOX) ozone season emission caps for large non-electric generating units (non-EGUs). (Ref: Legal Summary, Non-EGUs)

* The regulatory update also includes an important cross-reference adjustment related to the Cross State Air Pollution Rule (CSAPR). (Ref: Legal Summary, CSAPR)

* This approval reaffirms ongoing federal efforts under the Clean Air Act (CAA) to manage and reduce regional air pollution. (Ref: Clean Air Act)

**Why This Matters:**

For senior Disaster Recovery Managers and Grant Administrators, this EPA approval, while focused on air quality, underscores the critical and evolving landscape of environmental compliance that directly impacts federally funded projects. Any significant rebuilding, infrastructure development, or industrial recovery efforts post-disaster in Maryland—especially those involving facilities that could be classified as large non-EGUs or require significant energy generation—will be subject to these updated air quality standards. Ensuring adherence to current SIPs and federal environmental regulations is paramount for maintaining project eligibility, avoiding costly delays, and securing continued federal grant disbursements for long-term recovery and resilience initiatives.

**What Actions to Take Now:**

* **Review Environmental Compliance Protocols:** Immediately assess how these updated NOX emission caps and CSAPR cross-references may impact ongoing or planned disaster recovery projects, particularly those involving industrial or commercial facilities in Maryland.

* **Engage Environmental Specialists:** Consult with environmental compliance teams or contractors to understand the specific implications for permitting, construction, and operational phases of current and future recovery projects.

* **Assess Project Eligibility:** Verify that all federally funded recovery projects in Maryland continue to meet evolving environmental criteria to prevent any potential jeopardization of grant funding or project approvals.

* **Liaise with State Agencies:** Establish communication channels with relevant Maryland state environmental agencies to gain clarification on implementation specifics and any potential impacts on federally assisted programs.

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CATEGORY: Rules and Regulations – Final Rule