TY - JOUR
T1 - Influence of soil moisture on soil gas vapor concentration for vapor intrusion
AU - Shen, Rui
AU - Pennell, Kelly G.
AU - Suuberg, Eric M.
PY - 2013/10/1
Y1 - 2013/10/1
N2 - 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.
AB - 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.
KW - modeling
KW - soil gas vapor concentration
KW - soil moisture
KW - vapor intrusion
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U2 - 10.1089/ees.2013.0133
DO - 10.1089/ees.2013.0133
M3 - Article
AN - SCOPUS:84887418586
SN - 1092-8758
VL - 30
SP - 628
EP - 637
JO - Environmental Engineering Science
JF - Environmental Engineering Science
IS - 10
ER -