| Acronym | Meaning |
| HOPG | Highly Oriented Pyrolytic Graphite |
| RSRM | Reusable Solid Rocket Motor |
| PSII | Photosystem II |
| AWJ | Abrasive Waterjet |
| PAL | Positron Annihilation Lifetime |
| TCSM | Tropospheric Chemistry Systems Model |
| RRNA | Ribosomal Ribonucleic Acid |
| SEAM | Superfund Exposure Assessment Manual |
| SRC | Synchrotron Radiation Center |
| CRWQCB | California Regional Water Quality Control Board |