Furthermore, passive soil gas samplers are installed primarily with hand equipment and do not need specialized drilling tools or vendors, which reduces the overall sampling costs.

The St. Louis-based startup Impossible Sensing has successfully spun out a second company leveraging its core technology, ...

Collect samples uniformly and avoid preferential sampling spots, (e.g., areas that clearly show variation, such as a mound or depression in the soil).

In her letter, Ward said past soil sampling demonstrates that wildfire-related contamination can extend far beyond 6 inches. For this reason, she said, soil testing is an indispensable part of the ...