GEO performed the installation of ground water monitoring wells and soil borings at a former steel manufacturer's landfill.
The wells ranged in depth from 20 feet to 150 feet and were installed into glacial materials (slag, silt, flowing sand and
very hard till) and bedrock. Shallow borings were completed in the slag fill materials. GEO used multiple drilling
techniques to complete this project including hollow stem augers (3-1/4" through 8-1/4" HSA) with split spoon sampling,
air-hammer drilling into bedrock and cable tool drilling through till. GEO also installed, welded and grouted
in place over 1,000 feet of steel surface casing for the deeper bedrock wells. Some of these deep wells were completed
as artesian wells. In addition to the drilling, GEO personnel performed numerous support activities such as waste
management and containerization, decontamination, installation of steel locking covers and 2'x2' square formed concrete pads,
and well development.