Brazil is currently facing a growing vehicle population and increasing concerns regarding air quality in large metropolitan areas such as São Paulo. Mobile source hydrocarbon emissions are a large contributor to ground level ozone and smog in many urban areas. In order to develop the most cost-effective and meaningful VOC control strategy, from both evaporative and exhaust, one needs to better understand the quantity currently not controlled and the cost impact to advance controls and capture

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... each. This paper will further evaluate the control opportunities and impacts to the overall goal of reducing mobile source hydrocarbon emissions and improving air quality.