| South Carolina, North Carolina, and Georgia Department of Transportation |
| Beaufort, and Jasper Water Authority |
| Grand Strand Water Authority |
| Charleston Public Works |
| South Carolina State Ports Authority, North Carolina Ports Authority |
| Jacksonville Ports Authority |
| US Army Corps of Engineers |
| US Navy |
| US Coast Guard |
| Charleston County Parks and Recreation |
| South Carolina Department of Natural Resources |
| Westvaco, Milliken, Stone Container, Chem Marine, Amoco, and many other private owners and associations |