Freshwater Wetland Adjacent Area General Permit, GP-0-18-001 - NYS Dept. of Environmental Conservation

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Freshwater Wetland Adjacent Area General Permit, GP-0-18-001

The New York State Department of Environmental Conservation (NYS DEC) has issued General Permit GP-0-18-001 (PDF) (87 KB). This is a re-issuance of GP-0-13-001 issued in 2013.

General Permit Authorized Activity

The GP covers those activities identified below which are located within the regulated Adjacent Area of State Regulated Freshwater Wetlands subject to the following restrictions:

  1. Activities must be located a minimum of 50 feet from the NYSDEC staff determined Freshwater Wetland boundary.
  2. Activities must be in currently disturbed areas that do not contain natural vegetation. Currently disturbed areas include: landscaped lawn or garden areas at existing facilities; existing parking or paved areas and existing structures.

Authorized activities include:

  • demolition and removal of existing accessory/appurtenant structures;
  • construction of driveways or parking areas limited to 1000 sq. ft.;
  • additions to existing structures limited to 1000 sq. ft. basal area;
  • installation of garages, decks, porches, sheds, pools, utility lines and other accessory/appurtenant structures limited to 1000 sq. ft. of basal area;
  • in-kind, in-place replacement of existing accessory/appurtenant structures, roads and associated utilities.

All authorized activities must include appropriate stormwater runoff controls.

The following activities are NOT authorized by this permit:

  • any wetland disturbance, including placement of fills, grading, cutting or clearing of natural vegetation, or landscaping;
  • any disturbance within 50 feet of the wetland boundary;
  • any activity that disturbs greater than 1/4 of an acre in total for the entire project, within and outside of the wetland adjacent area;
  • construction of new, expanded or replacement septic systems;
  • storage of hazardous substances;
  • demolition of an existing primary structure;
  • any activity that directly impacts buildings or historic districts listed in the NYS and/or National Register of Historic Places.

Read the General Permit GP-0-18-001(PDF) (87 KB) to see if your project is covered. If your project is included in the list of authorized activities, read the Instructions to Applicants (PDF) (352 KB) and complete the Request for Authorization (PDF) (539 KB). Submit 2 completed, signed and dated copies to the appropriate regional DEC office, along with 2 copies of the following items:

  • a site location map;
  • project plans or sketch drawings showing all applicable details and measurements to clearly
    define the extent and nature of your work;
  • 3 representative color photographs which clearly depict the site of the proposed activity; indicate
    the time and date when taken; and
  • the Permission to Inspect Property Form (PDF) (549 KB), available on DEC's website, or available from the Regional Permit Administrator.

A NYSDEC representative may contact you to review your project plans at the proposed work site location before making a decision on this authorization. NYSDEC may add specific additional requirements or plan notes to the Project Authorization. No work is authorized until the permittee receives the signed Project Authorization.


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    Albany NY 12233-1750
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