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The 1996 National Toxics Inventory - A Key Component in the 1996 National Air Toxics Assessment

机译：1996年国家托管库存 - 1996年国家空中毒素评估的关键组成部分

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Requirements of the Clean Air Act and Government Performance Results Act (GPRA) have established the need for a more comprehensive hazardous air pollutant (HAP) emissions inventory effort that can be used to track progress by the Environmental Protection Agency (EPA) over time in reducing HAPs in ambient air. In response to these needs, the EPA has developed the National Air Toxics Assessment (NATA) to estimate the magnitude of HAP emissions reductions and demonstrate reduced public risk from HAP emissions attributable to Clean Air Act toxics programs. To estimate risk and HAP emission reductions, EPA compiled the 1996 National Toxics Inventory (NTI) to provide a model-ready emissions inventory as part of the NATA. The 1996 NATA national-scale air toxics assessment consists ofthe following steps: compilation of 1996 NTI, ASPEN ambient dispersion modeling, HAPEM exposure modeling, and risk characterization. The 1996 NTI includes estimates of emissions from stationary point and non-point and mobile source categories. Point source categories include major and area sources as defined in section 112 ofthe CAA. Non-point source categories include area sources and other stationary sources that may be more appropriately addressed by other programs rather than through regulations developed under certain air toxics provisions (sections 112 or 129) in the CAA. Mobile sources include on-road and non-road categories. The 1996 NTI contains approximately 58,000 point sources and 500 non-point stationary source categories. The 1996 NTI includes data on the emissions of the 188 HAPs from the 50 states. District of Columbia, Puerto Rico and Virgin Islands. Point source data are available at the individual stack level within a facility. Non-point stationary and mobile source data are reported at the county level. Summary data are currently available via the Internet on EPA's AIRS Data web page. The EPA publicly released the 1996 NTI in August 2000 and used it in the 1996 NATA: national-scale national air toxics assessment. This paper discusses the use of the 1996 NTI in NATA to evaluate the success of EPA's national air toxics program, and presents summary emissions data from the 1996 NTI.
机译：清洁空气法和政府绩效结果（GPRA）的要求建立了对更全面的危险空气污染物（HAP）排放量度库存努力，以便在减少期间跟踪环境保护局（EPA）的进展情况哈珀在环境空气中。为了满足这些需求，EPA开发了国家航空毒素评估（NATA），以估计HAP排放减少的程度，并展示了归因于清洁空中行为毒族课程的HAP排放量减少的公共风险。为了估算风险和HAP排放减少，EPA编制了1996年的国家学位库存（NTI），以提供北航一部分的模型准备排放量。 1996年NATA全国规模的空中毒素评估包括以下步骤：1996年NTI的编译，ASPEN环境分散建模，HAPEM曝光建模和风险特征。 1996年的NTI包括从静止点和非点和移动源类别的排放估计。点源类别包括如CAA第112节所定义的主要和区域源。非点源类别包括区域源和其他静止源，其可以更适当地由其他程序更适当地解决，而不是通过CAA中的某些空气毒素规定（部分112或129）在CAA中开发的法规。移动来源包括路上和非公路类别。 1996年的NTI包含大约58,000个点来源和500个非点静止源类别。 1996年的NTI包括来自50个州188个哈普赛的排放的数据。哥伦比亚区，波多黎各和维尔京群岛。点源数据在设施中的各个堆栈级别可用。县级报告了非点静止和移动源数据。摘要数据目前通过EPA的Airs数据网页上的Internet获得。 EPA于2000年8月公开发布了1996年的NTI，并在1996年的Nata：国家规模的国家航空毒理论评估。本文讨论了1996年NTI在Nata的使用，以评估EPA国家航空毒素计划的成功，并提出了1996年NTI的摘要排放数据。

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