The clean air act definition of pollutant is no unlimited. A chemical found in ambient air is only a pollutant above a certain level,and if it endangers human health or the environment.
The court concluded it may be a pollutant, subject to an EPA endangerment finding and establishment of a National Ambient Air Quality Standard. EPA is now in the middle of its endangerment finding. It will take a good bit of time before EPA can establish a NAAQS. David Schnare Air Enforcement Division Office of Civil Enforcement U.S. EPA On Wed, May 6, 2009 at 12:09 PM, dsw_s <[email protected]> wrote: > > > (Otherwise, you'd be calling CO2 itself a pollutant.) > > "EPA finds carbon dioxide is a pollutant" > > http://www.pulpandpapercanada.com/issues/ISArticle.asp?id=98967&issue=04202009 > > On May 6, 11:57 am, [email protected] wrote: > > James: > > > > The trouble with your pollution standard: > > > > "Putting clouds of sulphur dioxide into the atmosphere is itself > > polluting and hence violates the second criterion" > > > > is that you have no clear definition of pollution. > > SO2 occurs naturally, driven by volcanoes etc. > > Further, pollution is when a substance is harmfully present, not just > > detectable. That's a higher standard and the subject of much work, as > > it requires understand a system, not just measuring a parameter. > > (Otherwise, you'd be calling CO2 itself a pollutant.) > > > > Further, you seem unaware that unforeseen effects can and are dealt > > with by doing experiments, perturbing systems, etc, as physics has done > > for centuries. You can't learn through definitions; that takes > > experience. > > > > Gregory Benford > > > -- David W. Schnare Center for Environmental Stewardship --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
