| Acronym | Meaning |
| FIRF | Finite Impulse Response Filter |
| SETS | Superfund Enforcement Tracking System |
| EPFM | Elasto-plastic Fracture Mechanics |
| UAM | Urban Airshed Model |
| MEUG | Minimum Energy Uncertainty Gaussian (wave Packets) |
| APU | Acid Purification Unit (acid Recovery System) |
| APSG | Antisymmetrized Product Of Spin Geminals Method |
| BEST | Basic Extractive Sludge Treatment |
| IRP | Installation Restoration Program |
| BGS | Below Ground Surface |