| Business | Phone |
| Grs Comcor Environmental Ltd 320 Pinebush Rd, Cambridge N3C 2V3 | (519) 621-6669 |
| Prime Environmental Svc 250 Dundas St #187, Cambridge N1R 8A8 | (519) 745-8210 |
| Prl Environmental 16 Mclellan Crt, Cambridge N3C 4A7 | (519) 242-3857 |
| Enviroquest Limited 352 River Rd, Cambridge N3C 2B7 | (519) 651-2012 |
| Dillon Consulting Ltd 5 Cherry Blossom Rd #1, Cambridge N3H 4R7 | (519) 650-9833 |
| Ecotech Planners & Advisors 15 Sofron Dr, Cambridge N3C 4G5 | (519) 654-9823 |