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New Hampshire Department of Environmental Services

Draft TMDL's for Public Comment
Guidance Information for NPDES, CGP or MS4 Permit Applicants Regarding Impaired Waters and TMDL's

NPDES General Stormwater Permits (CGP)
and Municipal Separate Storm Sewer System (MS4)
Permit Application Inquiries

This information has been prepared in order to assist persons contacting the New Hampshire Department of Environmental Services for information regarding impaired waters and Total Maximum Daily Load (TMDLs) in accordance with application requirements for NPDES General Stormwater Permits (e.g., Construction General Permits (CGP), Municipal Separate Storm Sewer System (MS4) permits). In order for NHDES to process a request, please provide the following information regarding the project:

Contact information for the owner of the project
Address of the parcel (if available)
A plan showing the location of the project in relationship to nearby surface waters (copy of USGS map is fine)
The Latitude and Longitude of the project
A brief description of the proposed project, including:
  Purpose of the Project:
  Existing conditions (lot size, what's on the lot now, % impervious cover (paved roads, paved parking areas, buildings, etc.), drainage system description, receiving surface waters, etc.)
  Proposed project (% impervious cover after development, drainage system description, receiving waters, proposed stormwater best management practices (BMPs), site specific or wetlands permit required?, etc.)

Depending on the situation, NHDES may also request additional information such as site and grading plans, drainage calculations, and a copy of the SWPPP.

All information should be provided in electronic format, if possible, and sent to

NHDES Watershed Management Bureau
29 Hazen Drive; PO Box 95
Concord, New Hampshire 03302-0095
(RE: CGP/MS4 Request)
(603) 271-7894 (fax)

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