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Best Practices for Collecting Soil Samples for VOC Analysis


When it comes to getting accurate and reliable data on volatile organic compounds (VOCs) in soil samples, collecting and preserving the samples correctly is the most important step in the process – the data are only as good as the samples you get. This webinar will guide you through the alternatives for soil sample collection and provide recommendations for getting consistent and usable data.

The options for soil sampling in US EPA Method 5035 will be reviewed and discussed, including the advantages and disadvantages of doing field preservation using methanol and sodium bisulfrate. The EPA-listed En Core® Sampler and its "no preservative" technology will be compared to field preservation methods, along with demonstrations of how both are employed. Tools that can help you collect the right amount of soil for field preserved samples, the Terra Core® sampler and the EasyDraw® syringe. will also be covered in this webinar.



  • Comparison of soil sampling methods - bulk sampling, field preservation and non-preserved samplers
  • Why methanol/sodium bisulfate preservation isn't used everywhere
  • The effect of soil moisture and holding times on VOC concentrations in samples
  • Quality control considerations in the manufacturing of non-preserved samplers



  • Environmental Specialists and Managers
  • Geotechnical and Environmental Drillers
  • Field Sampling Technicians
  • Engineers
  • Regulatory Program Managers


A question and answer session will immediately follow the presentation. An expanded presentation file will also be available.


Wednesday, April 24, 2019, 1:30 PM - 2:30 PM EDT

*(Use "Show time in my time zone" to view your appropriate start time.)

Once registered you will receive an email confirming your registration with information you need to join the Webinar.

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PC-based attendees
Required: Windows® 8, 7, Vista, XP or 2003 Server

Mac®-based attendees
Required: Mac OS® X 10.6 or newer

Mobile attendees
Required: iPhone®, iPad®, Android™ phone or Android tablet

About the Presenter:

David Kaminski, Senior Vice President

David Kaminski is Senior Vice President of QED Environmental Systems and is a frequent presenter on groundwater sampling technology to organizations, universities, and regulatory agencies worldwide. He has been awarded four U.S. patents for developing new devices and methods for groundwater sampling applications and is an instructor at the Princeton Groundwater Pollution & Hydrology course.

Over the past 30 years, he has published several papers on groundwater sampling practices and sampling system design and has presented these topics at over a hundred conferences, seminars and field courses. Now, he will be sharing his considerable knowledge in the field of groundwater monitoring and site investigation tools with all who attend the webinar.