EPA delays release of new limits on ground-level smog

The Environmental Protection Agency has postponed the release of new ground-level ozone standards until at least late October. A number of states and cities have challenged the EPA's eight-hour ground-level ceiling of 75 parts per billion, claiming that the standard is too stringent. Environmental activists have also sued over the standard, saying it does not adequately protect public health.

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Springfield News-Leader (Mo.) (tiered subscription model)

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