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Los Angeles is the smoggiest metropolitan area in the U.S.; California has the top 10 smoggiest counties

Metropolitan Los Angeles, extending to Riverside and Long Beach, remains the smoggiest city in the United States, with an average of more than 140 days a year of dangerous ozone levels, the American Lung Assn. reported in its annual assessment. See http://www.stateoftheair.org/. All of the nation's...

Smoke from fires can travel thousands of miles impacting weather, climate, and air quality

Prior posts have noted the impact of fires in Southeast Asia on air pollution throughout the region. While it has been known for decades that large wildfires can create or enhance thunderstorm clouds, leading to what are called pyrocumulonimbus clouds ("pyroCbs"), only recently have researchers...

EPA proposes draft rules related to air emissions from hydrofacturing operations

EPA has released rule changes that will require oil and gas drillers that use hydraulic fracturing to use new or improved processes and equipment in an attempt to reduce the level of volatile organic compounds (VOC's) and other air pollutants emitted during the completion of new and modified hydraulically...

Let a thousand lawsuits bloom: The CAA is this week's favorite target

As noted in prior posts, EPA has proposed national standards for mercury and other toxic pollutant emissions from power plants. See http://www.epa.gov/airquality/powerplanttoxics/ . Now Guam and 25 states have filed a challenge to the regulations. The EPA is under court order to finalize the so-called...

Utah Gov. Herbert Names 'Action Team' To Fight Dirty Air

HERBERT NAMES 'ACTION TEAM' TO FIGHT DIRTY AIR: Utah Gov. Gary Herbert (R) announced the creation last week of a new working group tasked with devising solutions to the Beehive State's persistent air pollution problems. The 38-member panel, dubbed the Clean Air Action Team, will have until...

US EPA Urban Air Toxics Report to Congress

By Joyce A. Gentry The US EPA has released the Second Integrated Urban Air Toxics Report to Congress. This is the final of two reports required by the 1990 Clean Air Act (CAA) to inform Congress on the process in reducing public health risks from urban air toxics. A copy of the complete report...

Environmental Protection Agency Modifies Air Quality Standards for Ozone

On October 1, 2015 the United States Environmental Protection Agency (“EPA”) adopted a more stringent air quality standard for ground-level ozone emissions that reduces the national standard from 75 parts per billion (“ppb”) to 70 ppb. By promulgating a new ozone standard, EPA...