CAREER: Vapor Intrusion, Knowledge Brokers and Environmental Health - A Three-Dimensional Perspective

1452800 PI：Pennell，KellyCAREER：蒸汽入侵、知识经纪人和环境健康-三维视角普通人90%的时间都在室内度过，这使得室内空气质量极其重要。室内空气污染的来源有很多，但经常被忽视的是地下蒸汽进入室内空气空间的传输（即蒸汽侵入）。众所周知，蒸汽侵入很难表征，因为室内空气中极低的化学浓度与健康相关，模拟室内空气和地下环境需要复杂的方法。该项目将弥合地面空间和地下空间的空中运输建模之间存在的差距。该研究引入了一种新的方法，首次将挥发性有机化学蒸气入侵模型纳入大气，室内和地下环境，以解决PI收集的无法解释的初步现场数据，以及最近一些文献中无法解释的现场观察报告。由于蒸汽侵入法规正在迅速形成，科学家和工程师必须翻译产生的新知识，以便快速有效地与关键利益相关者进行互动。该提案的教育目标是培养学生作为知识经纪人，在学术研究人员和关键利益相关者（如监管机构，专业人士，立法者和社区成员）之间建立桥梁。建模将涉及计算流体动力学方法。现场数据集包括与现有数值模型不一致的室内空气浓度和土壤气体浓度的变化。定性地说，现场数据并没有模仿目前的概念理解的蒸汽入侵，这使得目前的蒸汽入侵模型在其描述现场观测的能力非常有限。该模型将通过建立重要的，以前忽略的地下和地上域之间的连接，是相关的环境命运和运输，推进环境工程领域。此外，蒸汽侵入表征还需要来自许多不同学科的科学知识（例如土壤科学家，工业化学家，分析化学家，环境工程师）才能充分理解这一问题。该项目将开发一种新的蒸汽入侵建模技术，将地下命运和运输建模与机械和工业工程方法相结合，用于建模地面上的空气运输。研究结果将纳入蒸汽侵入评估实践，以便使用准确的科学方法评估暴露风险。研究结果将与相关利益攸关方分享，以确保研究结果与政策决定相关。

1452800PI: Pennell, KellyCAREER: Vapor Intrusion, Knowledge Brokers and Environmental Health - A Three-Dimensional PerspectiveThe average person spends 90 % of their time indoors, which makes indoor air quality extremely important. There are many sources of indoor air contamination, but one that is too often overlooked is the transport of subsurface vapors into indoor air spaces (i.e. vapor intrusion).Vapor intrusion is notoriously difficult to characterize because extremely low chemical concentrations in indoor air are health-relevant and modeling indoor air and subsurface environments requires sophisticated approaches. This project will bridge the gap that exists between air transport modeling of above ground spaces and subsurface spaces. The research introduces a novel approach, where for the first time a volatile organic chemical vapor intrusion model will incorporate atmospheric, indoor and subsurface environments, in an effort to address unexplained preliminary field data collected by the PI, as well as some recent reports of unexplained field observations in the literature. Since vapor intrusion regulations are rapidly emerging, new knowledge generated must be translated by scientists and engineers to engage with key stakeholders, quickly and effectively. The educational goal of this proposal is to train students as knowledge brokers to build bridges between academic researchers and key stakeholders, such as regulators, professionals, legislators, and community members. The modeling will involve computational fluid dynamic approaches. The field data sets include variations in indoor air concentrations and soil gas concentrations that are inconsistent with existing numerical models. Qualitatively, the field data does not mimic the current conceptual understanding of vapor intrusion, which makes current vapor intrusion models extremely limited in their ability to describe field observations. The proposed model will advance the field of environmental engineering by establishing important, and previously omitted connections between the subsurface and aboveground domains that are relevant for environmental fate and transport. Moreover, vapor intrusion characterization also requires scientific knowledge from many different disciplines (e.g. soil scientists, industrial hygienists, analytical chemists, environmental engineers) to fully understand the matter. This project will develop a new vapor intrusion modeling technique that combines subsurface fate and transport modeling with mechanical and industrial engineering approaches for modeling aboveground air transport. Research results will be integrated into vapor intrusion assessment practices, so that exposure risks are assessed using accurate science-based methods. The results of the research will be shared with relevant stakeholders to ensure research results gain relevancy for policy decisions.