| http://www.w3.org/ns/prov#value | - Groups representing manufacturers, oil refiners, paper mills and other industries are criticizing a move by the Environmental Protection Agency to toughen ozone clean-air rules, even though the proposal fell well short of what a group of science advisers had recommended.EPA???s proposed standards seek to reduce ozone levels from 84 parts per billion, the current level, to between 70 and 75 parts p
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