| Acronym | Meaning |
| OECA | Office Of Enforcement And Compliance Assurance |
| TRC | Total Residual Chlorine |
| CAI | Computer Aided Instruction |
| SBAR | Sequencing Batch Anaerobic Reactor(s) |
| ECAO | Environmental Criteria And Assessment Office |
| FAS | Federation Of American Scientists |
| CFFV | Clean Fuel Fleet Vehicle |
| RPC | Regional Planning Commission |
| MCHF | Multiconfiguration Hartree-Fock |
| ESP | Elimination Of Solvation Procedure |