Remove 2004 Remove Government Remove Greenhouse Remove Ground-Level Ozone
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DEP Invests Over $2.7 Million In Alternative Fuel Transportation Projects To Improve Air Quality & Public Health, Reduce Greenhouse Gas Emissions

PA Environment Daily

million in Alternative Fuel Incentive Grants (AFIGs) to 18 cleaner fuel transportation projects statewide that will reduce greenhouse gas emissions and other air pollutants. Transportation generates 47 percent of nitrogen oxide emissions in Pennsylvania, contributing to the formation of ground-level ozone.

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Cars, Smog, and EPA

Legal Planet

NOx plays a role in forming ground level ozone and final particulates (PM2.5), both of which are human health hazards. Apparently Congress did not relish the task of periodically resetting the standards itself The 1990 Amendments authorized EPA to set standards for 2004 and beyond. These are called Tier 1 standards.