| Acronym | Meaning |
| DAS | Dendrite Arm Spacing |
| HEA | Health And Environmental Assessment |
| PO | Projection Operator |
| ICDH | Isocitrate Dehydrogenase |
| SLPM | Standard Liters Per Minute |
| DQO | Data Quality Objectives |
| NIGET | Neutron-induced Gamma-ray Emission Tomography |
| LDI | Laser Desorption Ionization |
| ETD | Enhanced Trickle Down (watershed Acidification Model) |
| CFR | Code Of Federal Regulations |