| Cable percussion borehole |
| Dynamic cone penetrometer |
| Removed |
| Structural investigation |
| Structural coring (inc concrete cores) |
| Cone penetration testing with piezocone |
| Cable percussion borehole with rotary cored follow on |
| Cable percussion borehole with rotary open hole follow on |
| Cone penetration testing |
| Dynamic probing |
| Flow gauging station |
| Hand dug pit |
| Open hole rotary drilling |
| Observation pit (Shored) |
| Observation trench (Shored) |
| Pavement coring |
| Self-boring pressuremeter testing |
| Rotary coring |
| Surface water gauging or sampling point |
| Trial pit |
| Trial trench |
| Windowless sampling |
| Sonic resonance borehole |