scholarly journals Passive and active soil gas sampling at the Mixed Waste Landfill, Technical Area III, Sandia National Laboratories/New Mexico

1996 ◽  
Author(s):  
M.D. McVey ◽  
T.J. Goering ◽  
J.L. Peace
Keyword(s):  
New Mexico ◽  
Soil Gas ◽  
Gas Sampling ◽  
Waste Landfill ◽  
Mixed Waste ◽  
Soil Gas Sampling ◽  
Technical Area

Development of a technically defensible soil gas sampling strategy for vapour intrusion assessments

2009 ◽  
Vol 46 (1) ◽  
pp. 102-113 ◽  
Author(s):  
Tai T. Wong ◽  
John G. Agar
Keyword(s):  
Human Health Risk ◽  
Sampling Strategy ◽  
Soil Gas ◽  
Assessment Process ◽  
Soil Conditions ◽  
Gas Monitoring ◽  
Gas Sampling ◽  
Monitoring Well ◽  
Sampling Procedures ◽  
Soil Gas Sampling

Soil vapour intrusion is now commonly evaluated as part of human health risk assessments at contaminated sites where buildings or other structures are located in close proximity to volatile organic chemicals (VOCs) in subsurface soils and groundwater. Investigation of the vapour intrusion pathway often requires that VOC concentrations in the soil gas adjacent to buildings and structures be characterized as part of the risk assessment process. This paper presents the design of a new soil gas monitoring well and a sampling procedure that effectively eliminate concerns about soil gas sample dilution due to short-circuiting of atmospheric air and help to ensure the collection of representative soil gas samples. The results of a parametric numerical modelling study that was applied to address the air short-circuiting issue and the technical rationale for the new soil gas monitoring well (SGMW) design are presented in this paper along with recommended soil gas sampling procedures in various soil conditions. The SGMW design rationale and methodology outlined in this paper considered the effects of soil moisture content and permeability, the depth to the sampling screen interval, and the soil gas sample extraction rate.

A COMPARISON OF SOIL-GAS SAMPLING METHODS USED AT TWO HARBOR SITES

1987 ◽  
Vol 1987 (1) ◽  
pp. 605-610
Author(s):  
Victor H. Owens ◽  
Walter J. Sexton ◽  
Jacqueline Michel
Keyword(s):  
Sampling Methods ◽  
Oil Spills ◽  
Extraction Methods ◽  
Diesel Oil ◽  
Soil Gas ◽  
Gas Extraction ◽  
Adsorption Method ◽  
Gas Sampling ◽  
Soil Gas Sampling ◽  
Component Adsorption

ABSTRACT Underground oil spills leaking into navigable waterways at Baltimore, Maryland, and Hilo, Hawaii, were investigated using soil-gas sampling methods. Gas extraction methods were used in Hilo with mixed but favorable results. Component adsorption methods were used in Baltimore with highly favorable results. In comparing the two soil-gas sampling methods and results, the component adsorption method was found to be superior in detecting the presence or absence of underground diesel oil. The gas extraction method produced results that were somewhat limited in use because of lack of sensitivity to the components of diesel oil. Interpretation of data from both methods was found to be complicated by the presence of surface spill contamination leading to false indications of underground oil.

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