| Acronym | Meaning |
| RACS | Response Action Contractors |
| AFFF | Aqueous Film-forming Foam |
| AQIRP | Auto/Oil Air Quality Improvement Research Program |
| RFP | Reasonable Further Progress |
| ESWL | Extracorporeal Shockwave Lithotripsy |
| TLDA | Total Lifetime Distribution Analysis |
| SWSA | Solid Waste Storage Area |
| RXES | Resonant X-ray Emission Spectra |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| LNRS | Laser Nonresonant Shadowgraphy |