[Ord. No. 2043-08 § 2]
This section is enacted to support the goals of the stormwater
management best practices established by the New Jersey Department
of Environmental Protection ("NJDEP") for the purpose of maximizing
the retention of water on private property in order to: reduce runoff
onto public streets; improve percolation; reduce stormwater and sediment
entering storm drains and waterways; and to reduce standing water
and ponding in public streets.
[Ord. No. 2043-08 § 3;
amended 10-3-2022 by Ord. No. 2376-22]
This section applies to all new construction or development,
the expansion of an existing building footprint by more than 500 square
feet, because such improvements impact water runoff to neighboring
properties, public streets and storm drains, and displacement of ground
water.
[Ord. No. 2043-08 § 4;
amended 10-3-2022 by Ord. No. 2376-22]
The general regulations established by this section are as follows:
a. The basement or crawl space floor level of any new structure, or
the basement or crawl space floor level of an expansion of an existing
structure by more than 500 square feet must be at least one foot above
the seasonal high groundwater level as certified by a professional
engineer. The certification shall be based on soil borings and other
recognized criteria used to determine seasonal high groundwater levels.
b. No sump pump outlet shall drain or be pumped directly or indirectly
onto a sidewalk or public street. A sump pump outlet must be terminated
within the area of the lot on which it is located.
c. Irrigation sprinklers shall not discharge water onto a public street.
d. Curbs and driveway aprons shall be constructed pursuant to Section
20-3 of Chapter
20, Streets and Sidewalks.
e. Concrete, asphalt and paver driveways must be crowned to direct the
flow of stormwater onto the lot on which the improvements are constructed.
There shall be no curb reveal at the edges of a driveway.
f. The lot must be graded so that stormwater does not flow onto neighboring
properties.
g. Water from a gutter, downspout or sump pump must be piped directly
into a drywell or seepage pit installed on the lot, except that this
provision shall not apply to properties in the R-4 Zone. The drywell
or seepage pit must be constructed to meet the following criteria:
1. The drywell or seepage pit system shall be designated to contain
stormwater runoff from one inch of precipitation in a twenty-four-hour
period.
2. No such water shall enter the municipal sanitary sewer system.
h. All drainage plans to demonstrate compliance with the requirements
of this section must be submitted to the Zoning Officer prior to the
issuance of a construction permit.