Environmental Protection & Preservation
EPA Sets Stronger National Air Quality Standard for Sulfur Dioxide
The US Environmental Protection Agency (EPA) is issuing a final new health standard for sulfur dioxide (SO2). This one-hour health standard will protect millions of Americans from short-term exposure to SO2, which is primarily emitted from power plants and other industrial facilities. Exposure to SO2 can aggravate asthma and cause other respiratory difficulties. People with asthma, children, and the elderly are especially vulnerable to the effects of SO2.
‚ÄúWe‚Äôre taking on an old problem in a new way, one designed to give all American communities the clean air protections they deserve. Moving to a one-hour standard and monitoring in the areas with the highest SO2 levels is the most efficient and effective way to protect against sulfur dioxide pollution in the air we breathe,‚Äù said EPA Administrator Lisa P. Jackson
. ‚ÄúThis is one of many pollutants we‚Äôve been able to significantly reduce through the Clean Air Act, keeping people healthy, protecting our environment and growing our economy. This new standard -- the first in almost 40 years -- will ensure continued success in meeting these challenges.‚Äù
is setting the one-hour SO2 health standard at 75 parts per billion (ppb), a level designed to protect against short-term exposures ranging from five minutes to 24 hours. EPA is revoking the current 24-hour and annual SO2 health standards because the science indicates that short-term exposures are of greatest concern and the existing standards would not provide additional health benefits.
EPA is also changing the monitoring requirements for SO2. The new requirements assure that monitors will be placed where SO2 emissions impact populated areas. Any new monitors required by this rule must begin operating no later than Jan. 1, 2013. EPA is expecting to use modeling as well as monitoring to determine compliance with the new standard.
The final rule also changes the Air Quality Index to reflect the revised SO2 standard. This change will improve states‚Äô ability to alert the public when short-term SO2 levels may affect their health.
EPA estimates that the health benefits associated with this rule range between $13 billion and $33 billion annually. These benefits include preventing 2,300 to 5,900 premature deaths and 54,000 asthma attacks a year. The estimated cost in 2020 to fully implement this standard is approximately $1.5 billion.
The first National Ambient Air Quality Standards for SO2 were set in 1971, establishing both a primary standard to protect health and a secondary standard to protect the public welfare. Annual average SO2 concentrations have decreased by 71 percent since 1980.
The final rule addresses only the SO2 primary standards, which are designed to protect public health. EPA will address the secondary standard ‚Äì designed to protect the public welfare, including the environment ‚Äì as part of a separate review to be completed in 2012.
EPA expects to identify or designate areas not meeting the new standard by June 2012.
More Environmental Protection & Preservation Articles
Global Thermostat Named Among World’s 10 Most Innovative Energy Companies
Coal-fired power generation coming to an end in New Zealand
Researchers Find Less Expensive Way to Convert Carbon Dioxide
New Technology to Recycle All Type of Plastics Without Using Water
Recycling Styrofoam into rigid plastic
Veolia transforms non-recyclable paper into new products
SaskPower launches world's first commercial carbon capture and storage process
Carbon Taxes and Emissions Trading are Cheapest Ways of Reducing CO2, According to OECD
Artificial Lung to Remove Carbon Dioxide - from Smokestacks
Pilot Plant to Permanently Store CO2 Emissions as Carbonate Rock Bricks for use in Construction Industry
even more articles...
Suggest an Article for Green Progress