bflinch1
Sampling the subsurface: 3 of 10
The bit goes on the end of the augering pipe. The bit diameter is a little under 4”. As the material is scraped and loosened by the bit, the augering pipe transports the loosened material to the ground surface where it is shoveled away by a person. The loose dirt removed from the hole is kept in a pile and used to refill the hole when we are done. The bit is hollow in the middle because to extract “relatively” undisturbed samples we use a smaller diameter pipe that goes through the center of the auger pipe to where we stopped drilling with the bit. We use a smaller (2”) diameter pipe with an open end and push material into a collection the tube. Once our samples are collected, we continue to auger using through the sample region. We then repeat the process in 5’ (1.4 m) increments.
Sampling the subsurface: 3 of 10
The bit goes on the end of the augering pipe. The bit diameter is a little under 4”. As the material is scraped and loosened by the bit, the augering pipe transports the loosened material to the ground surface where it is shoveled away by a person. The loose dirt removed from the hole is kept in a pile and used to refill the hole when we are done. The bit is hollow in the middle because to extract “relatively” undisturbed samples we use a smaller diameter pipe that goes through the center of the auger pipe to where we stopped drilling with the bit. We use a smaller (2”) diameter pipe with an open end and push material into a collection the tube. Once our samples are collected, we continue to auger using through the sample region. We then repeat the process in 5’ (1.4 m) increments.