| Business | Phone |
| Energy & Enivronmental Analys 1239 N Country Rd # 1, Stony Brook 11790 | (631) 751-4600 |
| Pegasus Engineering 6 Nadworny Ln, Stony Brook 11790 | (631) 751-6600 |
| Lahti Engineering & Envrnmntl 207 Hallock Rd # 212, Stony Brook 11790 | (631) 751-6433 |