Stormwater Management Certification Requirements
Stormwater Management Certification
In order to obtain a permit for land development, any person proposing a development in a community that has adopted
the DuPage County Stormwater Ordinance shall obtain a Stormwater Management
Certification.
Stormwater Management Certification is not
required if the following conditions apply:
- The development site
does not include floodplain, wetlands or buffers; and
- The development does
not add 2,500 square feet or more of net new impervious area compared
to the pre-development conditions,
and
- Does not include 5,000 square feet or more of land disturbing activities.
OR
The development site does not include floodplain, wetlands or buffers and/or consists solely of one or more of the following:
- Cultivation, conservation measures or gardening; or
- Installation, renovation or replacement of a septic system,
potable water service line or other utility to serve an existing structure; or
- Excavation or removal of vegetation in rights-of-way or
public utility easements for the purpose of installing or maintaining
utilities; or
- Maintenance, repair or at
grade replacement of existing lawn areas not otherwise requiring a Stormwater Management Certification under
this Ordinance.
General Certification
General
Certifications are intended to reduce submittal requirements, design costs and
the public burden to apply for Stormwater Management Certification for
generally low impact developments. As
long as the applicant abides by the special conditions as described in the
General Certification, then the development will be considered as having
obtained a Stormwater Management Certification.
General Certifications may be obtained for the following developments:
- Construction of
Accessory Structures in a Floodplain
- Construction of Boardwalks
- Construction of Boat
Lifts and Piers in a Floodplain, Buffer, and/or Wetland
- Construction of a Deck in a Floodplain or Buffer
- Demolition of Structures in a Floodplain, Buffer,
and/or Wetland
- Construction
of Posts, Fencing and Guard Rails in a Floodplain or Buffer
- Construction of
Recreational Facilities Not Located in a Wetland
- Construction
of Sidewalks, Trails, Patios and Driveways Outside of Wetlands
- Construction of Storm
Sewer Outfalls and Outlet Channels Located in a Floodway, Floodplain, Buffer
and/or Wetland
- Construction of Shoreline or
Stream Bank Stabilization Measures
- Construction
of Topsoil and Sand Restoration in a Floodplain, Floodway or Buffer, But Not Within a Wetland
- Construction
of Utilities
- Elevation of Existing Buildings in Floodplain
Letter of Permission
Letters of Permission may be issued for developments that can be determined, based on review of the applicant’s proposed plans, available documents, site inspection and judgment to be limited in scope and complexity to fit the definition for minor development.