United States
Wildfires are no longer a rare source of PM2.5 emissions
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Last week, TheClean Air Scientific and Advisory Committee officially
Transmittedits recommendations to EPA Administrator Regan
Concerning the PM2.5 NAAQS. Consistently with trade press
Reporting over the past few weeks, the majority CASAC members
It is recommended that the PM2.5 NAAQS should be set between 8-10
ug/m3. A minority of people recommended that the range be established
Between 10-11 ug/m3. I would be very surprised if they were.
Revisioned NAAQS is set at 10 ug/3. PICHUR
What I find most interesting about the letter to me is the
Suggestion:
The implications of exceptional events should be considered by the EPA
approach, especially when applied to wildfires.
The risk assessment.
It appears that the language was toned from the draft language.
It is strongly recommended that the EPA change its exceptional
events policy. It is an important policy.
issue. As the detailed CASAC Comments Note:
Extraordinary eventsEPA allows exclusion
Wildfire PM events are covered by the exceptional event rule
calculating PM2.5 design values. Some parts of the country
Wildfires no longer are “exceptional”. The dramatic
The increase in wildfires in the last decade is not normal; it is a result of human activity.
Combination of anthropogenic climate changes and forest management
Practices and power line ignition incidents. These are (in theory).
At least partially manageable The potential for
If you have experienced significant adverse health events, it might be time to reconsider your decision.
Current approach to excluding high PM exposures from wildfire
events in design values.
Are forest fires natural?
events? Democrats believe that the increase
Wildfires are linked to climate change caused by humans. Republicans
Blame Democratic forest management. Both explanations support
It is clear that wildfires are not a natural phenomenon.
At CASAC’s suggestion, I’ve weighed the implications
I believe it’s the right time to acquaint ourselves with the exceptional events approaching.
change.
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This article is intended as a general overview.
guide to the subject matter It is a good idea to seek specialist advice
Discuss your particular circumstances.
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