| Acronym | Meaning |
| NASQAN | National Stream Quality Accounting Network |
| EMER | Electromagnetic Molecular Electronic Resonance |
| XPS | X-ray Photoelectron Spectroscopy |
| SPF | Simons-Parr-Finlan (potential Function) |
| FASTMAP | Fast Automatic Shimming Technique By Mapping Along Projections |
| SPLP | Synthetic Pptn. Leaching Procedure |
| LDV | Laser Doppler Velocimetry |
| UNIRAM | Software For Reliability |
| EEL | Environmental Exposure Levels |
| EPA | United States Environmental Protection Agency |