| Business | Phone |
| 1854 Authority 4428 Haines Rd, Duluth 55811 | (218) 722-8907 |
| Clean Water Action 394 S Lake Ave # 312a, Duluth 55802 | (218) 722-8557 |
| Environmental Association 394 S Lake Ave # 222, Duluth 55802 | (218) 726-1828 |
| Minnesota Envrnmntl Prtnrshp 394 S Lake Ave, Duluth 55802 | (218) 727-0800 |
| Minnesotans For Responsible 205 W 2nd St, Duluth 55802 | (218) 740-3175 |
| Nature Conservancy 394 S Lake Ave # 305, Duluth 55802 | (218) 727-6119 |
| Sugarloaf Interpretive Ctr 1040 Minnesota Ave, Duluth 55802 | (218) 740-2755 |