Storm Water Plans

A Storm Water Plan is required when development exceeds at least one of the thresholds of the Site Development Standards listed below. Level One or Level Two Site Development Standards apply, depending on the site development standards section of each Zoning District. 

Site Development Standards - Level One

1. Creates more than 25,000 square feet of new impervious surface area on a lot;

2. Increases the total impervious surface area of a lot beyond one acre;

3. Includes grading, excavation or filling that cumulatively moves 1,000 cubic yards or more of material; or

4. Includes grading, excavation or filling that creates a permanent slope of 3:1 or more, and that has a total height, measured vertically from toe of slope to top of slope, exceeding 10 feet.

Site Development Standards - Level Two

1. An impervious surface coverage that is greater than 60 percent of the lot area (existing and proposed development combined);

2. The cumulative addition of 25,000 square feet or greater of new impervious surface area from the pre-development conditions;

3. Land grading of one acre or greater surface area;

4. Grading involving the movement of 10,000 cubic yards or more of material;

5. Includes grading, excavation or filling that creates a permanent slope of 3:1 or more, and that has a total height, measured vertically from toe of slope to top of slope, exceeding 10 feet.

6. Any land clearing or grading on a slope steeper than 25 percent, or within 10 feet of any wetland, watercourse, or water body.

If you are unsure if you need a storm water plan, contact the Planning and Zoning Department. The fee is $200 and review of your storm water plan will take approximately two weeks.

Below are links to the SWP application.