| Acronym | Meaning |
| CNLS | Complex Nonlinear Least Squares (data Fitting Method) |
| UASB | Upflow Anaerobic Sludge Blanket |
| SDH | Succinate Dehydrogenase |
| TSSMS | Time Sharing Service Management System |
| NDUV | Non-dispersive Ultraviolet Analyzer |
| SNMS | Sputtered Neutral Mass Spectrometry |
| PDES | Preliminary Draft Environmental Statement |
| NDDN | National Dry Deposition Network (US EPA) |
| CAPMON | Canadian Air And Precipitation Monitoring Network |
| MBRS | Molecular Beam Relaxation Spectrometry |