The NH-VT Water Science Center maintains two drill rigs (CME 75 and CME 55) and two full-time drill rig operators. We offer the following drilling support services for our groundwater investigations and those of other USGS offices:

• Hollow-stem auger drilling (3.25" and 4.25" i.d.) to depths of 135+ feet
• Split-spoon (2") or continuous 5' split-tube sampling
• Waterloo saturated-sand sampling
• Mud-rotary drilling of boreholes (3" diameter) to 300 feet
• Wireline-core drilling and casing advancer for bedrock
• Monitoring-well installation up to 4-inches in diameter
• Special coring procedures for hazardous-waste containment and pristine-sample collections in areas of contamination