Assessment of the effects of potential control strategies on emissions sources in Ohio and downwind ozone levels
Conference
·
OSTI ID:617921
- ENVIRON International Corporation, Novato, CA (United States)
The 1990 Clean Air Act Amendments (CAAA) contained wide-range regional controls for improving air quality and air quality related values throughout the US. Evidence to date suggests that regional transport of ozone is a significant contributor to ozone exceedances in many ozone nonattainment areas in the eastern US. Thus, the Environmental Council of States (ECOS) has formed the Ozone Transport Assessment Group (OTAG) to analyze the regional ozone problem and assess the effectiveness of regional control strategies for reducing regional ozone concentrations. Many of the regional control strategies suggested by OTAG may significantly affect sources in the state of Ohio. Thus, the State of Ohio sponsored this study to perform a detailed review of the effect that regional control strategies proposed by OTAG and others will have on emission sources in Ohio. The effects of these proposed controls were reviewed and quantified to assess their effectiveness compared to other control measures. In addition, supplemental photochemical modeling was performed to complement the regional ozone modeling being performed by OTAG to provide quantitative estimates of the impacts of sources in the state of Ohio on downwind ozone concentrations. A version of the EPA UAM that incorporates the ability to perform ozone source apportionment of geographic regions and/or source categories was applied to the Cincinnati UAM SIP databases to determine the regions that contribute to high ozone in the Cincinnati area and identify the types of controls and locations that could potentially lead to adverse local effects. Using the OTAG modeling databases, the UAMX model was also applied using its source apportionment capability to provide a definitive estimate of the contribution Ohio sources have on regional ozone levels.
- OSTI ID:
- 617921
- Report Number(s):
- CONF-9609223--
- Country of Publication:
- United States
- Language:
- English
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