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首页> 外文会议>Air Waste Management Association Annual Conference Exhibition >The Vapor Intrusion Risk Pathway and the Use of Slab Attenuation Factors in the 1995 ASTM Risk-Based Corrective Action(RBCA)Model
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The Vapor Intrusion Risk Pathway and the Use of Slab Attenuation Factors in the 1995 ASTM Risk-Based Corrective Action(RBCA)Model

机译：蒸汽入侵风险途径和在1995年ASTM风险的纠正措施（RBCA）模型中使用板坯衰减因子的使用

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Regulatory agencies are increasingly requiring the use of vapor intrusion models to evaluate human health risks at volatile organic compound(VOC)impacted sites based upon the transport of organic vapors from the subsurface through the unsaturated zone into indoor building environments.Many state and local agencies have developed their own guidelines based upon the 1995 ASTM Risk-Based Corrective Action(RBCA)model to calculate the health risk associated with the migrating vapors.This risk is,among other factors,dependent on the migration of vapors through the building's slab foundation;therefore,many of these guidelines use a slab attenuation factor to reduce the calculated mass flux of the contaminant from the subsurface into the structure.This paper will examine the barrier effect of the slab and its effects on the mass flux into the building.Specifically,the paper will look at the permeability of cracks within the slab and a numerical model will be used to calculate various slab attenuation factors based on crack size and frequency.These results will be compared to published information on cracks in slabs to determine the appropriate range of slab attenuation factors that should be used.
机译：监管机构越来越需要利用蒸汽入侵模型，根据从地下通过不饱和区转移到室内建筑环境中的有机蒸汽运输有机蒸汽的挥发性有机化合物（VOC）受影响的部位的人体健康风险。许多国家和地方机构有根据1995年ASTM的基于风险的纠正措施（RBCA）模型制定了自己的指导方针，以计算与迁徙蒸汽相关的健康风险。如果有其他因素，则依赖于通过建筑的板坯基础迁移蒸汽;因此，这些指导中的许多指南使用板坯衰减因子将污染物的计算质量通量从地下降低到结构中。本文将研究板坯的阻隔效果及其对大厦的质量通量的影响。特殊地，纸张将看看板内裂缝的渗透率，数值模型将用于计算各种板坯atte基于裂缝尺寸和频率的纽约因子。这些结果将与字形中的裂缝发布的信息进行比较，以确定应使用的适当范围的板坯衰减因子。

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