| Business | Phone |
| Natural Resources Conservation 14th St & Independence Ave Swamp;, Washington 20250 | (202) 720-4525 |
| National Capital Parks Central 900 Ohio Dr Sw, Washington 20242 | (202) 485-9880 |
| Us Interior Dept 1100 Ohio Dr Sw, Washington 20242 | (202) 619-7275 |
| Us Forest Service-Land Staff 201 14th St Sw Fl 4, Washington 20024 | (202) 205-1248 |
| Tennessee Valley Authority 1 Massachusetts Ave Nw # 300, Washington 20444 | (202) 898-2999 |
| Us Army Corps Of Engineers 1000 Independence Ave Sw, Washington 20585 | (202) 761-0660 |
| Us Interior Dept 1849 C St Nw, Washington 20240 | (202) 208-3100 |
| Us Surface Mining Reclaimation 1951 Constitution Ave Nw # 344, Washington 20245 | (202) 208-2953 |