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State enacts tougher ozone rules

State enacts tougher ozone rules

Stiffer ozone pollution regulations approved by the state legislature last week won't affect the county's two coal-fired plants, but will force other area power plants to make changes to comply, officials said. The measure enacts some regulations approved by former Gov. Martin O'Malley, but held up by Gov. Larry Hogan before they went into effect. The move comes weeks after air pollution reports found that Maryland last year met the current ozone standard for the first time in 30 years. Only two of 20 testing stations statewide showed ozone in excess of the current 75 parts per billion standard. The regulations put forward by O'Malley were in two parts, standards...

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