| Business | Phone |
| Coastal & Estuarine Research 700 Pilottown Rd, Lewes 19958 | (302) 645-9610 |
| Delaware Bay & River Co-Op 700 Pilottown Rd, Lewes 19958 | (302) 645-7861 |
| Ecological Research & Dev Inc 931 Nassau Rd, Lewes 19958 | (302) 644-8129 |
| Sussex Occupational & Env Hlth 24 Ancient Oak Dr, Lewes 19958 | (302) 947-1810 |