Windowless sampling is a fast and cost-effective way of sampling near-surface superficial deposits, typically up to 6 m bgl; however, deeper holes are possible in favourable ground conditions. Our windowless sample rigs offer a versatile solution to better understanding the ground profile and are often utilised by our clients as part of contamination assessments or where access may be unsuitable for larger plant. We are able to cover a lot of ground using this technique, and in favourable conditions, we can achieve around five to six boreholes within a single day. This makes the technique a particularly cost-effective way for installing shallow gas and groundwater installations for subsequent monitoring.

In recent years, windowless sampling has become a popular technique for ground investigations on the rail infrastructure, as their manoeuvrability makes them suitable for sites with challenging access or time constraints.