| CC | Civil Code |
| CEE | Central and Eastern Europe |
| CGNA | Central Government Needs Analysis Substudy |
| CIS | Commonwealth of Independent States |
| ECE | United Nations Economic Commission for Europe |
| EAP | Environmental Action Program for Central and Eastern Europe |
| EU | European Union |
| FS | NREC Feasibility Study |
| FSU | former Soviet Union |
| ISAR | A Clearinghouse on Grassroots Cooperation in Eurasia (NGO, USA) |
| LANA | Local Authorities Needs Analysis Substudy |
| MEPNR | Ministry for Environmental Protection and Natural Resources, Russia |
| MEPNS | Ministry for Environmental Protection and Nuclear Safety of Ukraine |
| NEAP | National Environmental Action Programs |
| NFPO | Not-for-profit Organizations |
| NGO | Non-governmental Organizations |
| NIS | New Independent States |
| NREC | New Regional Environmental Centers for Countries beyond the Mandate of the REC-Budapest |
| NREC FS | A Feasibility Study on Establishing New Regional Environmental Centers for Countries beyond the Mandate of the Regional Environmental Center for Central and Eastern Europe |
| REC-Budapest | The Regional Environmental Center for Central and Eastern Europe |
| RF | Russian Federation |
| SEU | Socio-Ecological Union (International NGO based in Russia) |
| TOR | Terms of Reference for NREC Feasibility Study |
| U.S. AID | USA Agency for International Development |
| U.S. EPA | USA Environmental Protection Agency |
| WGSGO | UN Economic Commission for Europe, Committee on Environmental Policy: Working Group of Senior Governmental Officials |