| Acronym | Meaning |
| CARTS | Critical Actions Requirements Tracking System |
| BTF | Biotransfer Factor |
| SXES | Soft X-ray Emission Spectroscopy |
| XMCD | X-ray Magnetic Circular Dichroism |
| SLAMS | State And Local Air Monitoring System |
| CBF | Correlated Basis Function |
| DTA | Direct Toxicity Assessment (of Wastewater Discharges) |
| BTEX | Benzene, Toluene, Ethyl Benzene, And Xylene |
| HWIR | Hazardous Waste Identification Rule |
| OCC | Organochlorinated Compound |