| Business | Phone |
| Air Resources Div 29 Hazen Dr, Concord 3301 | (603) 271-1370 |
| Environmental Services Dept 6 Hazen Dr, Concord 3301 | (603) 271-3503 |
| Groundwater Protection Bureau 6 Hazen Dr, Concord 3301 | (603) 271-3644 |
| Hazardous Waste Compliance 6 Hazen Dr, Concord 3301 | (603) 271-2942 |
| Solid Waste Compliance 6 Hazen Dr, Concord 3301 | (603) 271-2900 |
| Surface Water Quality Div 6 Hazen Dr, Concord 3301 | (603) 271-3504 |
| Waste Management Div 29 Hazen Dr, Concord 3301 | (603) 271-2900 |