Air Pollution Notes

Air Pollution Notes - Air Pollution Text reading: pp....

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Air Pollution Text reading: pp. 524-568 Introduction and definitions Regulatory considerations Air pollution problems NAAQS HAPs Meteorology effects and modeling Requirements for an air pollution “problem”: 1. Pollution source - stationary: power plant, industry, landfill, WWTP, etc. - mobile: motor vehicles, airplanes, etc. 2. Appropriate meteorology 3. Appropriate topography (maybe – see Case Study of Donora, PA) 1
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Air Pollution – 1990 Clean Air Act (CAA) HAPs : 189 HAPs, many categories of emission sources; EPA set MACT for every category; reevaluation of effectiveness 8 years after MACT set. NAAQS (Title I) update with focus on ground level ozone particulate matter ( TSP vs PM 10 and PM 2.5 ) carbon monoxide nonattainment classifications Strategic Improvement Plan ( SIP ) enforcement CFCs: Phases out ozone-depleting compounds ( Montreal Protocol ) POLLUTION TRADING: Encourages the use of market-based principles and other innovative approaches, like performance-based standards and emission banking and trading ETHANOL subsidies, California pilot program for using alternative fuels PERMITTING PROGRAM (Title V): Similar to Federal National Pollution Elimination Discharge System (NPDES - CWA) allow CITIZEN SUITS IADN (Integrated Atmospheric Deposition Network for air toxics) 2
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Air Pollution – 2 legislative approaches Air Quality NAAQS are the definition of quality (outdoor) air in the United States. NAAQS set for six CRITERIA pollutants only. No NAAQS for HAPs. Primary Standards : protect human health with margin of safety without consideration of technical feasibility or economic costs Secondary Standards : more stringent but not used to regulate. Designed to protect welfare of structures, crops, animals, forests. States are held responsible for meeting the NAAQS by the U.S.EPA Emissions Both HAPs and Criteria Pollutants can have emission standards. The Federal government sets emission standards for HAPs and emission standards for some major sources of criteria pollutants (power plants for PM and SO 2 ) States set emission standards for most criteria pollutants and have to have their SIP approved by the regional EPA NSPS (New Source Performance Standards) are an example of a set of emission standards set by the federal government. They are preconstruction permits. Legal arguments ongoing about
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Air Pollution Notes - Air Pollution Text reading: pp....

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