Borough of Manasquan, NJ Chapter 28 Stormwater Regulations

Editor's Note: See Chapter 32, Section 32-17 for additional Stormwater Management Regulations.

§ 28-1 STORMWATER DRAINAGE IMPROVEMENTS ON REAL PROPERTY. [1]

[1] Editor's Note: Prior ordinance history includes portions of Ordinance No. 2007-07.

§ 28-1.1 Purpose.

[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.

§ 28-1.2 Applicability.

[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.

§ 28-1.3 General Regulations.

[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.