Tougher Ground-Level Ozone Standards

bwilson4web · Jan 8, 2010

Green Car Congress: EPA Proposes New Tougher Ground-Level Ozone Standards

. . .
The agency is proposing to set the â€œprimaryâ€ standard, which protects public health, at a level between 0.060 and 0.070 parts per million (ppm) measured over eight hours. EPA is also proposing to set a separate â€œsecondaryâ€ standard to protect the environment within the range of 7-15 ppm-hours. 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 of the new proposal. . . .
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This is a challenge for vehicles having trouble with NO{x} emissions.

Bob Wilson

dogfriend · Jan 8, 2010

Here is an article on the reason it took until now to change the standard:

Global Warming - Salon.com

Tougher Ground-Level Ozone Standards

bwilson4web BMW i3 and Model 3

dogfriend Human - Animal Hybrid

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Tougher Ground-Level Ozone Standards

bwilson4web BMW i3 and Model 3

dogfriend Human - Animal Hybrid