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The July 1 Deadline Approaches for Participation in the Colorado Extended Producer Responsibility (EPR) Program

Beginning July 1, 2025, producers of a wide range of packaging and paper materials, as well as products that use such materials, are prohibited from selling or distributing such products in the state of Colorado, unless they...more

EPA Proposes Sweeping Repeal of GHG Standards for Fossil Fuel-Fired Power Plants

Administrator of the U.S. Environmental Protection Agency (EPA) Lee Zeldin on June 11, 2025, announced a proposed rule titled “Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units.” In...more

EPA Reclassifies the Northern Wasatch Front and Uinta Basin Ozone Nonattainment Areas

EPA recently redesignated the Northern Wasatch Front and the Uinta Basin ozone nonattainment areas based on data demonstrating that the areas failed to meet the 2015 ozone National Ambient Air Quality Standard (NAAQS) by...more

October 1 Deadline for Producers to Register under Colorado's New Recycling System is Fast Approaching

The Colorado Legislature has adopted an Extended Producer Responsibility (“EPR”) Program which requires producers of certain packaging and paper materials to cover the cost of recycling those materials in the state. If you...more

EPA Imposes Stringent Greenhouse Gas Rule for Fossil Fuel-Fired Power Plants

On April 25, 2024, the EPA announced, as part of a suite of four rules for fossil fuel-fired power plants, its final greenhouse gas (GHG) standards for power plants—imposing stringent new requirements on existing coal-fired...more

EPA Tightens the Annual PM2.5 Standard, Creating Compliance Challenges Across the West

On February 7, 2024, EPA released its final rule tightening the annual National Ambient Air Quality Standard (“NAAQS”) for fine particulate matter (“PM2.5”), from 12 µg/m3 to 9 µg/m3. EPA’s decision to drop the standard to...more

EPA Doubles Down on Enforcement to Address Climate Change

In its latest move to address climate charge, the Environmental Protection Agency’s (EPA) Office of Enforcement and Compliance Assurance (OECA) on September 28, 2023 issued a memorandum titled “EPA’s Climate Enforcement and...more

GHG Standards for the Power Sector: Is Third Time the Charm or Is It Déjà Vu?

In the third attempt in less than 10 years, the Environmental Protection Agency issued a proposed rule package (“Proposal”) that would apply strict greenhouse gas emissions standards to the fossil fuel-fired power sector. The...more

Impacts on the Western US from EPA Proposed Strengthening of Annual PM2.5 NAAQS

On January 6, 2023, EPA released a pre-publication version of its highly anticipated proposal to strengthen the National Ambient Air Quality Standard (“NAAQS”) for fine particulate matter or PM2.5, one of two classes of...more

EPA Applies More Rigorous Emission Controls on Uintah and Ouray Indian Reservation Lands

EPA is poised to publish a final Federal Implementation Plan (FIP) for emissions from oil and natural gas sources on Indian country lands within the Uintah and Ouray Indian reservation in northeast Utah. EPA recently released...more

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