| Acronym | Meaning |
| AGST | Above Ground Storage Tank |
| CEQA | California Environmental Quality Act |
| CIS | Characteristic Isochromat Spectroscopy |
| FO-CPHF | First-order Coupled Perturbed Hartree-Fock Theory |
| SCM | Scanning Capacitance Microscopy |
| TDS | Time-dependent Sudden |
| TPR | Total Population Risk |
| SPIN | Silica Phase-immobilized Nitroxide |
| DMO | Delocalized Molecular Orbital |
| BTCA | Best Technology Currently Available |