| Business | Phone |
| Amec Earth & Environmental 1240 Phillip Murray Ave #4, Oshawa L1J 6Z9 | (905) 720-4100 |
| Lack Environmental Consultants 1050 Simcoe St N #110, Oshawa L1G 4W5 | (905) 579-5524 |
| Ontario Insulation Ltd 728 Emerson Ave, Oshawa L1H 3L3 | (905) 571-6000 |