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Pinedale Online > News > January 2010 > EPA proposes changing ozone standard to a level between 0.060 and 0.070 parts per million (ppm)
EPA proposes changing ozone standard to a level between 0.060 and 0.070 parts per million (ppm)
60-day comment period
by Environmental Protection Agency media release
January 7, 2010

EDITOR'S NOTE: Scroll to the end of this release for reader's comments.

EPA Strengthens Smog Standard
Proposed standards, strictest to date, will protect the health of all Americans, especially children

WASHINGTON, Thursday, January 7, 2010 The United States Environmental Protection Agency today proposed the strictest health standards to date for smog. Smog, also known as ground-level ozone, is linked to a number of serious health problems, ranging from aggravation of asthma to increased risk of premature death in people with heart or lung disease. Ozone can even harm healthy people who work and play outdoors. The agency is proposing to replace the standards set by the previous administration, which many believe were not protective enough of human health.

"EPA is stepping up to protect Americans from one of the most persistent and widespread pollutants we face. Smog in the air we breathe poses a very serious health threat, especially to children and individuals suffering from asthma and lung disease. It dirties our air, clouds our cities, and drives up our health care costs across the country," said EPA Administrator Lisa P. Jackson. "Using the best science to strengthen these standards is a long overdue action that will help millions of Americans breathe easier and live healthier."

The agency is proposing to set the "primary" standard, which protects public health, at a level between 0.060 and 0.070 parts per million (ppm) measured over eight hours. Children are at the greatest risk from ozone, because their lungs are still developing, they are most likely to be active outdoors, and they are more likely than adults to have asthma. Adults with asthma or other lung diseases, and older adults are also sensitive to ozone.

EPA is also proposing to set a separate "secondary" standard to protect the environment, especially plants and trees. This seasonal standard is designed to protect plants and trees from damage occurring from repeated ozone exposure, which can reduce tree growth, damage leaves, and increase susceptibility to disease.

In September 2009 Administrator Jackson announced that EPA would reconsider the existing ozone standards, set at 0.075 ppm in March 2008. As part of its reconsideration, EPA conducted a review of the science that guided the 2008 decision, including more than 1,700 scientific studies and public comments from the 2008 rulemaking process. EPA also reviewed the findings of the independent Clean Air Scientific Advisory Committee, which recommended standards in the ranges proposed today.

Depending on the level of the final standard, the proposal would yield health benefits between $13 billion and $100 billion. This proposal would help reduce premature deaths, aggravated asthma, bronchitis cases, hospital and emergency room visits and days when people miss work or school because of ozone-related symptoms. Estimated costs of implementing this proposal range from $19 billion to $90 billion.

Ground-level ozone forms when emissions from industrial facilities, power plants, landfills and motor vehicles react in the sun.

EPA will take public comment for 60 days after the proposed rule is published in the Federal Register. The agency will hold three public hearings on the proposal: Feb. 2, 2010 in Arlington, Va. and in Houston; and Feb. 4, 2010 in Sacramento.

More information:


Reader's Comments:

1/7/10: "It is an odd coincidence it would come on the same day that Interior would also propose sweeping changes to leasing and federal lands regulation.

The tricky part about this "proposed" standard is it doesn't exactly define where in the 60-70ppb rance the new standard would be. Currently, (as of the 2008 standard), we are at 75ppb. At a minimum, this would mean there well be more areas in non-attainment across the country. I have heard that under the 2008 75ppb standard, 50% of the nation's monitors would be in non-attainment, and if it were in the 60ppb range, then 80% of the monitors in the nation would be out of compliance.

This give the strong perception that the air is getting dirtier, when in fact it is getting cleaner--significantly.

This is a little like raising the poverty level--it is an arbitrary number, and is continually raised, which affects the statistical perspective, but in reality the opposite is probably true.

Locally, the new standard means the Governors office will have to re-file the designation letter with whatever the final standard is set at, after the 60-day public comment period, by January 2011. The area the State recommended for non-attainment is likely to grow with the new standard. Then the State Implementation Plan will need to be filed with DEQ by the end of 2013.

That is the process as it is likely to unfold, from a micro level.

From a macro level, this will mean more regulatory oversight by DEQ and EPA. It will result in more restrictive permitting on all types of industry. There is literally no concern about cost of regulations in this process.. It is mentioned, but is not a factor, because the proposed tighter standard makes it clear the "EPA is reconsidering the ozone standards to ensure that two of the nation's most important air quality standards are clearly grounded in science". The EPA is charged with enforcement, irregardless of cost. The charge of "protecting the public welfare" is a broad one, with literally no "reality" based limits placed upon it.

In this discussion, reality based limits might include jobs lost or not created (to use the current venacular).

But, in this march towards cleaner air, which we all favor, cost is not a basis for argument. I, for one, am sure happy we will have cleaner air to breathe. But, I question, the long-term ramifications and consequences of these goals."

- Dave Bell, Pinedale, Wyoming


Pinedale Online > News > January 2010 > EPA proposes changing ozone standard to a level between 0.060 and 0.070 parts per million (ppm)

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