skip navigation
New Hampshire Department of Environmental Services

Regional Offices

The main headquarters for the NH Department of Environmental Services is at 29 Hazen Drive in Concord, NH, 03301; (603) 271-3503. However, NHDES also maintains several regional offices to accommodate the public's need for various services, and it operates a regional wastewater treatment facility and training center based in Franklin administered by the Winnipesaukee River Basin Program.

NHDES maintains a regional office at Pease International Tradeport in Portsmouth that addresses the areas of septic systems, wetlands, coastal watershed management, waste management, and erosion control. NHDES also has small regional offices serving septic system needs administered by the Subsurface Systems Bureau, with one such office (in Grantham) that also serves regional waste management needs. The locations and contact persons for all of these regional offices are as follows:

NHDES Gorham Regional Office
80 Glen Road
Gorham, NH 03581
(603) 466-5379
Directions Adobe Acrobat Reader SymbolMap

NHDES Grantham Regional Office
Sawyer Brook Plaza, Unit 7
PO Box 1283
Grantham, NH 03753-1283

Waste Management: (603) 863-1125 / (603) 863-4380
Subsurface (Septic) Systems: (603) 863-3266

Winnipesaukee River Basin Program (Complete List)

Subsurface (Septic) Systems Bureau (Complete List)

Subsurface (Septic) Systems Bureau Regional Offices and Contacts Adobe Acrobat Reader Symbol

NHDES Portsmouth Regional Office
Pease International Tradeport
222 International Drive, Suite 175
Portsmouth, NH 03801
(603) 559-1500
Directions Adobe Acrobat Reader Symbol Map

NHDES Portsmouth Regional Office Staff List

Contact E-Mail Phone

Coastal Program (Complete List)
Susan Lambert, NHDES Portsmouth Regional Office

(603) 559-1500

Shellfish Program (Complete List)
Chris Nash, NHDES Portsmouth Regional Office

(603) 559-1509

Spill Response and Complaint Investigation (Complete List)


Jason Domke, NHDES Portsmouth Regional Office

(603) 559-1506

Subsurface Systems Bureau (Complete List)


Jay Baas, NHDES Portsmouth Regional Office

(603) 559-1511

Superfund Sites Management (Complete List)


Peter Sandin, NHDES Portsmouth Regional Office

(603) 559-1512

Watershed Assistance Section (Complete List)


Sally Soule, NHDES Portsmouth Regional Office

(603) 559-0032

Barbara McMillan, NHDES Portsmouth Regional Office

(603) 559-1517

Wetlands Bureau (Complete List)


Eben Lewis, NHDES Portsmouth Regional Office

(603) 559-1515

David Price, NHDES Portsmouth Regional Office

(603) 559-1514

Neil Bilodeau, NHDES Portsmouth Regional Office

(603) 559-1513

Stefanie Giallongo, NHDES Portsmouth Regional Office

(603) 559-1516



Adobe Acrobat Reader Symbol Adobe Acrobat Reader format. Download a free reader from Adobe.

NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

copyright 2017. State of New Hampshire