Influence of Soil Moisture on Soil Gas Vapor Concentration for Vapor Intrusion

被引:48
作者
Shen, Rui [1 ]
Pennell, Kelly G. [1 ]
Suuberg, Eric M. [1 ]
机构
[1] Brown Univ, Sch Engn, Providence, RI 02912 USA
关键词
modeling; soil gas vapor concentration; soil moisture; vapor intrusion; VOLATILE ORGANIC-COMPOUNDS; HYDRAULIC CONDUCTIVITY; GROUNDWATER; MODEL; DISPERSION; WATER; BIODEGRADATION; PERMEABILITY; SIMULATION; ENTRY;
D O I
10.1089/ees.2013.0133
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Mathematical models have been widely used in analyzing the effects of various environmental factors in the vapor intrusion process. Soil moisture content is one of the key factors determining the subsurface vapor concentration profile. This manuscript considers the effects of soil moisture profiles on the soil gas vapor concentration away from any surface capping by buildings or pavement. The open field soil gas vapor concentration profile is observed to be sensitive to the soil moisture distribution. The van Genuchten relations can be used for describing the soil moisture retention curve, and give results consistent with the results from a previous experimental study. Other modeling methods that account for soil moisture are evaluated. These modeling results are also compared with the measured subsurface concentration profiles in the U.S. EPA vapor intrusion database.
引用
收藏
页码:628 / 637
页数:10
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