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Posts Tagged ‘Particulate matter’

EPA Buys Back Dirty Diesels

Agency claims 10:1 health benefit for the taxpayer subsidies.

by on Oct.15, 2009


Diesels last for decades, so EPA is addressing the existing fleet.

The U.S. Environmental Protection Agency in a just released report to the Congress claims its Diesel Emission Reduction Program, funded at $50 million by taxpayers last year, allowed EPA to purchase or retrofit 14,000 diesel-powered vehicles and pieces of equipment, preventing respiratory illnesses and saving money in communities nationwide.

EPA said the program eliminated 46,000 tons of nitrogen oxide, a prime contributor to elevated smog levels, and 2,200 tons of particulate matter when computed over the lifetime of the diesel vehicles

EPA also estimate that it is conserving 3.2.million gallons of fuel annually under the “SmartWay Clean Diesel Finance Program,” which saves operators $8 million annually

All told, the agency charged with cleaning the air we breathe and water we use claims it is generating public health benefits between $500 million to $1.4 billion. 


If You Live Here, Then Stop Breathing

EPA lists areas violating daily air pollution requirements.

by on Oct.12, 2009


Particulate matter, which comes from factories, power plants and motor vehicles, can cause a number of serious health problems.

U.S. Environmental Protection Agency is designating 31 areas across the country as not meeting the daily standards for fine particle air pollution (PM 2.5), or particulate matter.

Particulate matter, which comes from power plants, factories and motor vehicles, can cause a number of serious health problems, including aggravated asthma, increased hospital admissions and emergency room visits, heart attacks and premature death.

Large areas of California, Connecticut, Michigan, New Jersey, New York and Ohio, among others, are in violation of the standard. Click here for your state.

Particulate matters, or PM, are particles found in the air, including dust, dirt, soot, smoke, and liquid drops. Particles remain in the air for long periods. Some particles are large or dark enough to be seen as soot or smoke, as in diesel truck exhaust. Others are so small that they can only be detected with an electron microscope.

Breathtaking News!

Breathtaking News!

Many man made and natural sources emit particulate matter directly or emit other pollutants that react in the atmosphere to form them. These solid and liquid particles come in a wide range of sizes.

Particles less than 10 micrometers in diameter (PM10) pose a health concern because they are inhaled and accumulate in the respiratory system. Particles less than 2.5 micrometers in diameter (PM2.5) are “fine” particles, and are believed to pose the greatest health risks. Because of their small size (approximately 1/30th the average width of a human hair), fine particles can lodge deeply in your lungs.

EPA estimates that about one out of every three people in the United States is at a higher risk of experiencing PM2.5 related health problems. One group at high risk is active children because they often spend a lot of time playing outdoors and their bodies are still developing. In addition, oftentimes the elderly population is at risk. People of all ages who are active outdoors are at increased risk because, during physical activity, PM2.5 penetrates deeper into the parts of the lungs that are more vulnerable to injury.