The Best Method for the Best Results

BeSure Passive Soil-Gas Technology™

BeaconDOD ELAP Accredited Laboratory TO-17 8260 Environmental is a DoD ELAP and ISO 17025 accredited laboratory and provides the highest level of accuracy and quality assurance and quality control (QA/QC) procedures for the analysis of soil-gas samples in the industry. In addition, the design of Beacon's BeSure Passive Soil Gas Sampler™ and BeSure Sample Collection Kit™ enable the rapid and efficient collection of field samples.

The table below provides a comparison of the BeSure Passive Soil Gas Technology™ from Beacon to the PSG technology of other companies.


Beacon Environmental

Other PSG Company

Analysis by thermal desorption-gas chromatography/ mass spectrometry (TD-GC/MS)
Analysis completed in-house
Prep blanks, trip blanks, method blanks, & duplicate samples
Color isopleth maps provided
Hydrophobic adsorbents selection described
Samplers need to be encased in a membrane, which is a material that can act as a competing adsorbent
Samplers provided in easy-to-use and rugged plastic tool kit with tug-tight custody seal
Demonstrated accuracy at various depths, including as shallow as 10 centimeters
Analysis following EPA Method 8260C
Analytical results based on initial 5-point internal calibration
Internal standards and surrogates included with each run
BFB tunes (5 to 50 nanograms through GC, per method)
Continuing calibration checks (mid-point of initial calibration range)
Standard data turn around time (in business days)



Beacon provides analysis of passive soil gas samples following U.S. EPA Method 8260C, with results based on an initial five-point calibration and internal standards and surrogates included with each analysis.  The reporting limit (RL) is at or above the low point of the initial calibration, ensuring defensible data.

Other passive soil gas methods are known to base their results on an external calibration method and calibrate at quantities that are greater than an order of magnitude above their reporting limits, but refer to the method as being Method 8260 (i.e., claim a reporting limit of 25 ng but have 250 ng or higher as the low point of the calibration). These deficiencies are not in agreement with EPA Method 8260 nor are they acceptable for soil or groundwater analysis and should not be accepted as valid for passive soil gas analyses.