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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.

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Glossary of Greenhouse Gas Terms

Greenbuilding Law

With proposed federal regulation of greenhouse gas emissions by the Securities and Exchange Commission requiring GHG disclosure and new state statutes, including a new Maryland law that requires not only disclosure, but also a mandated reduction in GHG emissions, a greater appreciation of the subject of GHG appears in order.

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Clean Fleets Rule Slated to Deliver Healthier Air for Californians

Union of Concerned Scientists

Because last week, the California Air Resources Board (CARB) made history by unanimously adopting what is perhaps the most transformative clean trucks regulation ever considered—the Advanced Clean Fleets (ACF) rule. This rule creates the first-ever, economy-wide, zero-emission standard for large truck fleets.

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Huge gaps in detection networks plague emissions monitoring

Environmental News Bits

Plug gaps to measure ozone-destroying chemicals and greenhouse gases and verify compliance with Paris and Montreal treaties. Read the full story at Nature. Read more →

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Proposed DEP Regulation Would Require 22% Of Passenger, Light Duty Vehicle Fleet Offered For Sale In PA Be Zero Emission Vehicles Starting In 2025

PA Environment Daily

On October 14, the Department of Environmental Protection presented a proposed regulation that would adopt California’s existing Zero Emission Vehicle Program that requires 22 percent of the new passenger and light duty vehicle fleets offered for sale in the state be zero emission vehicles starting in model year 2025.

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California Ready to Take Giant Leap Toward Zero-Emission Trucks

Union of Concerned Scientists

In late April, California air regulators are poised to pass one of the most meaningful regulations to reduce pollution from commercial trucks, vans, and buses. The Advanced Clean Fleets (ACF) rule, which I’ve blogged about in detail before, will phase out fossil-fueled trucks over the next several decades. There are more than 1.8

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Changes to California’s Electric Truck Proposal Could Reap Huge Climate and Air Quality Gains

Union of Concerned Scientists

This new regulation would apply to delivery vans, big rigs, box trucks, and buses. This new regulation would apply to delivery vans, big rigs, box trucks, and buses. Regulate more tractor trucks, including the smaller fleets. However, lowering the threshold to 10 could deliver around 15 percent greater GHG, PM2.5,