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Ozone management in Colorado: Why aren't we there yet?
Priyanka deSouza1,2, Grace Hood1
1Department of Urban and Regional Planning, University of Colorado Denver, Denver, CO, USA.
Journal of the Air & Waste Management Association (1995)
|November 18, 2024
Summary
Colorado
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Policy Analysis
Background:
- Colorado's Front Range communities have repeatedly failed to meet U.S. Environmental Protection Agency (EPA) ozone standards since 2004.
- Multiple State Implementation Plans (SIPs) aimed at reducing air pollution have been unsuccessful.
Purpose of the Study:
- To examine the shortcomings of the ozone State Implementation Plan (SIP) process in Colorado.
- To identify reasons for the failure to attain EPA ozone standards in the Denver Metropolitan and North Front Range areas.
Main Methods:
- Qualitative analysis through interviews with eight stakeholders and decision-makers involved in ozone SIP rulemaking.
- Review of secondary literature on air pollution policy and environmental regulation.
Main Results:
- Emissions inventories and ozone modeling contain uncertainties, leading to inaccurate attainment predictions.
- Structural issues between state agencies (Air Pollution Control Division and Regional Air Quality Council) hinder effective SIP development.
- Lack of authority for the Regional Air Quality Council to implement control strategies limits policy options.
- Recent SIPs focused on minimal controls, not robust solutions.
Conclusions:
- Improved ozone precursor measurement and modeling, including sensitivity analyses and better uncertainty management, are needed.
- Structural reforms and increased political leadership are essential for effective ozone mitigation in Colorado.
- Addressing agency structural problems and empowering regulatory bodies are critical for future SIP success.
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