| Acronym | Meaning |
| FPLH | Free-Phase Liquid Hydrocarbon |
| WQBEL | Water Quality-based Effluent Limits |
| PTS | Position-tagged Spectroscopy |
| AU | Astronomical Unit |
| CHICO | Compact Heavy-ion Counter |
| TWA | Time-weighted Average Limit |
| GPR | Ground-penetrating Radar |
| LRMS | Low Resolution Mass Spectrometry |
| MEP | Multiple Extraction Procedure |
| APH | Adiabatically Adjusting |