Apparatus and method for environmental surveying for contaminants in alluvial materials and bedrock formations

摘要

Apparatus and method for environmental surveying and prospecting for contaminants in alluvial materials and bedrock formations including using a portable pneumatic rotary percussion drilling machine, preferably pneumatic, having a gas circulation fluid to displace drill cuttings, the machine utilizing a perforated rock drill bit and hollow stem drill rod and potentially including means for lifting water and soil samples, a high pressure source of gas for unclogging perforations in the bit and means for driving and removing casing using the percussion driver.