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Get The Best Equipment For Your Soil Gas Sampling and Collection

soil sampling equipment

AMS has been a leader in soil gas sampling technologies and soil gas sampling equipment since the development of the “original” AMS gas vapor probe. Initially designed to take shallow gas vapor samples in soils to depths of about 4 feet, new technologies are allowing newer versions of the AMS gas vapor probe to easily sample to 12 feet, depending on soil conditions.


Fitting the right product to the right application is crucial. In our case, we want to know what is the most appropriate soil gas sampling equipment to use for specific applications is.


Soil augers are a tool primarily used for soil sampling, but also for sampling peats and other unconsolidated sediments. The most universal form has a screw head to bore the soil or sediment. Alternative auger heads are available for more specialized and unique needs. Samples are collected by inserting a sampling device into a borehole with direct push drilling technology or manually-driven driven hand sampling equipment, such as a soil auger, where samples may be obtained with a soil sampler or soil core sampler. This device can auger deeper depths and are generally limited by the strength of the user and time constraints. In fact, users have recorded going over 100 ft using the AMS soil auger in a variety of soil conditions. Direct-push sampling technology in this instance refers to soil samplers that are inserted into the ground without the use of slam bars, demolition hammers, or drilling rigs.


AMS has also developed and patented the dedicated AMS gas vapor tip and the AMS Retract-A-Tip for soil gas monitoring and surveying as well as taking shallow groundwater samples.


Active soil-gas collection methods involve pulling a vapor sample from a probe that is either permanently or temporarily inserted in the soil. The sample is then collected into a collection or analytical device. Samples are then transported to a laboratory, or in some cases they are analyzed right on site. Soil gas samples should ideally be collected above where chemical contamination in the soil or groundwater has been identified. Soil gas sampling should not take place within 48 hours after a significant rainfall, in standing or ponded water areas, or where soil is consistently watered by an irrigation system.


In the past, collection of gas samples was conducted directly through the rods driven to depth. The rods were then retracted a specified distance to release the expendable point and create an open void where soil gas could enter the rod string for sampling. While this method was cost and time effective, there was a potential for leaks at each rod joint that could potentially hinder the quality of the sample, giving an inaccurate reading of the sample.


With advancements in soil gas sampling equipment and testing, the use of soil gas data is being applied to evaluate this potential human health hazard and how these health concerns can be avoided in the future, and not just for identifying potential source areas of ground water contamination.