Non-destructive geophysical inspection and testing, namely, locating, marking and inspecting the placement and condition of underground utilities, conduits, pipes, cable or wires; Non-destructive geophysical surveying and inspection services, namely, locating, marking and inspecting the placement and condition of monitoring wells, core samples and test pits; Non-destructive testing and geophysical surveying for locating, marking and inspecting the placement and condition of construction, foundations, infrastructure improvements and trenches; environmental site characterization, namely, conducting geological surveys for purposes of determining sources, locations and migration of hazardous waste; hydrogeologic assessment and characterization, conducting geophysical and geological surveys for purposes of determining optimal placement of municipal and private water supplies and assessment of aquifer properties; geophysical inspection and testing, namely, detecting and marking sinkholes beneath the ground, roadways, runways, tunnels and buildings; geophysical assessment of archeological sites for determining the location of historic artifacts