Declet-Barreto Juan, Goldman Gretchen T, Desikan Anita, Berman Emily, Goldman Joshua, Johnson Charise, Montenegro Leonard, Rosenberg Andrew A
Center for Science and Democracy, Union of Concerned Scientists, Washington, DC, USA.
NumAIRic, Inc., Chandler, AZ, USA.
J Air Waste Manag Assoc. 2020 May;70(5):481-490. doi: 10.1080/10962247.2020.1735575. Epub 2020 Apr 13.
On January 25, 2018, the United States Environmental Protection Agency withdrew a 1995 policy that mandates the use of maximum achievable control technology (MACT) to regulate emissions from major sources of hazardous air pollutants (HAPs), a category of toxic chemicals that may be carcinogenic, mutagenic, or cause other adverse health effects. To better understand the implications and scope of the change in regulatory guidance for HAP emissions of major sources that may reclassify as area sources, the increase in emissions that could legally occur under the new policy is assessed here. Based on facility-level data from a 2014 HAP national emissions inventory, it is estimated that 70% of major sources of HAPs qualify for reclassification as area sources, which could result in a maximum of 35,030 tons per year (tpy) of additional HAP emissions if all sources successfully reclassified. This amount would nearly triple the total volume of HAPs that qualifying major sources emitted in 2014. On average, qualifying sources could emit individually an additional 18.4 tpy. In the 21 states and territories that follow only federal guidelines for controlling HAPs, it is more likely that the estimates presented here could materialize compared to states that have additional guidelines for area sources of HAPs. The quantitative analysis of the potential emission changes resulting from regulatory change is instructive for industry, state and federal decisionmakers, and interested members of the public looking to understand and anticipate how relevant stakeholders will be affected by this policy change.: Withdrawal of a U.S. Environmental Protection Agency policy that mandates the use of maximum achievable control technology (MACT) to regulate emissions from major sources of hazardous air pollutants (HAPs) could result in higher emissions of toxic chemicals that may be carcinogenic, mutagenic, or cause other adverse health effects. Analysis of potential emission changes resulting from regulatory change is instructive for industry, state, and federal decisionmakers, and interested members of the public looking to understand and anticipate how relevant stakeholders will be affected by this policy change.
2018年1月25日，美国环境保护局撤销了一项1995年的政策，该政策要求使用最大可实现控制技术（MACT）来监管危险空气污染物（HAPs）主要来源的排放，HAPs是一类可能致癌、致突变或导致其他不良健康影响的有毒化学品。为了更好地理解可能重新归类为区域源的主要来源HAPs排放监管指南变化的影响和范围，本文评估了在新政策下可能合法发生的排放量增加情况。基于2014年HAP国家排放清单中的设施层面数据，估计70%的HAPs主要来源符合重新归类为区域源的条件，如果所有来源都成功重新归类，每年可能导致最多35,030吨的额外HAPs排放。这个数量将使符合条件的主要来源在2014年排放的HAPs总量增加近两倍。平均而言，符合条件的来源各自可能额外排放18.4吨/年。在仅遵循联邦控制HAPs指南的21个州和领地，与对HAPs区域源有额外指南的州相比，本文提出的估计更有可能成为现实。对监管变化导致的潜在排放变化进行定量分析，对行业、州和联邦决策者以及希望了解和预测相关利益攸关方将如何受到这一政策变化影响的公众感兴趣的成员具有指导意义。：美国环境保护局撤销一项要求使用最大可实现控制技术（MACT）来监管危险空气污染物（HAPs）主要来源排放的政策，可能导致可能致癌、致突变或导致其他不良健康影响的有毒化学品排放量增加。对监管变化导致的潜在排放变化进行分析，对行业、州和联邦决策者以及希望了解和预测相关利益攸关方将如何受到这一政策变化影响的公众感兴趣的成员具有指导意义。
