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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.

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EPA Announces $1.35 Million Penalty, Settlement With Genesee & Wyoming Railroad Over Clean Air Act Violations

PA Environment Daily

and numerous affiliated companies (collectively, GWRSI) for violation of Clean Air Act (CAA) locomotive regulations. The locomotives at issue in this settlement burn diesel fuel which produces significant emissions of nitrogen oxides (NOx) and fine particulate matter. microns has been shown to cause lung damage and cancer.

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DEP Issues Notice Of Violation To Shell Petrochemical Plant In Beaver County For Air Quality Violations In Sept. - Oct.

PA Environment Daily

This exceedance is a violation of Shell’s plan approvals ( PA-04-00740A , PA-04-00740B , and PA-04-00740C ) and the Pennsylvania Air Pollution Control Act and regulations. DEP is authorized under the Air Pollution Control Act to order compliance where appropriate.