What is a "three-acre site?"
General Permit 3-9050 serves as the permit for "three-acre sites" as required under the Vermont Clean Water Act. A “three-acre site” is an impervious surface of three or more acres that:
- has never had an operational stormwater permit, or
- was permitted to standards in place prior to the 2002 Stormwater Management Manual
The Stormwater Rule defines these sites as follows:
- Impervious surface of three or more acres means a single tract of land with three or more acres of impervious surface;
- a project on a tract or tracts of land that was previously authorized under a stormwater permit that authorized the discharge of stormwater from three or more acres of impervious surface; and
- impervious surface adjacent to or adjoining the foregoing types of impervious surfaces where the surface in question are part of a related operation, such as a hospital, resort, or campus.
When do I need to apply?
General Permit 3-9050 contains the schedule for submitting an application. Affected properties in the Lake Champlain and Lake Memphremagog watersheds that were identified as a "three-acre site" received notification from the Stormwater Program identifying when applications are due.
All initial application submittal due dates in General Permit 3-9050 have now passed and Initial NOI applications are no longer accepted. If your project does not have an 18-month term Initial NOI Permit issued and still active (not expired) or an issued 5-year term Full NOI permit, then a Full NOI application is due. The Stormwater Program is not able to extend application due dates, which are established in statute.
List of "three-acre sites"
The list below identifies properties that are required to obtain permit coverage and retrofit their site to improve the level of stormwater treatment. This list includes properties in Lake Champlain, Lake Memphremagog, and stormwater-impaired watersheds only.