What process involves removing undisturbed samples of soil at regular intervals and recording the type of material in a boring log?

The process of removing undisturbed samples of soil at regular intervals and recording the type of material in a boring log is best described as Borings. This method is essential in geotechnical engineering and site analysis because it allows for an investigation of subsurface conditions, including soil properties, stratigraphy, and groundwater levels.

In a boring process, a drill is used to penetrate the ground while carefully extracting soil samples. These samples can then be analyzed to provide important information for designing foundations, assessing site stability, and understanding material behavior under various loading conditions. The boring log serves as documentation of the soil characteristics at different depths, which is crucial for engineers and architects to make informed decisions related to construction.

In contrast, options like sampling or drilling do not fully encapsulate the act of systematically logging undisturbed samples at regulated intervals, while drilling specifically refers to the act of creating the boreholes rather than the complete process inclusive of logging.