East Brunswick, NJ Environmental Rules: Stormwater Management (2026)

Section 192-53 was last amended on November 14, 2024 by Ord. No. 24-30. Its stated policy is that flood control, groundwater recharge and pollutant reduction be achieved through stormwater management measures, including green infrastructure best management practices (GI BMPs) and nonstructural strategies. It applies to nonresidential major developments, to aspects of residential major developments not pre-empted by the Residential Site Improvement Standards at N.J.A.C. 5:21, and to all major developments undertaken by East Brunswick Township itself. Applications submitted before November 14, 2024 are held to the requirements in effect on November 13, 2024.

"Major development" means disturbance of one or more acres of land since February 2, 2004, creation of 1/4 acre or more of regulated impervious surface since February 2, 2004, or creation of 1/4 acre or more of regulated motor vehicle surface since March 2, 2021, or a combination of the last two totaling 1/4 acre or more.

The performance standards are numeric. For groundwater recharge, the design engineer shows that the site maintains 100% of the average annual preconstruction recharge volume, or that the increase in runoff volume for the projected two-year storm is infiltrated. For runoff quality, 80% TSS removal is required from the net increase of motor vehicle surface, using a water quality design storm of 1.25 inches of rainfall in two hours. For runoff quantity, the engineer chooses one of the printed options, including holding post-construction peak rates for the two-, ten- and 100-year storms to 50%, 75% and 80% of preconstruction rates. Dry wells are limited to a one-acre contributory drainage area, and manufactured treatment devices and small-scale bioretention, infiltration basins and sand filters to 2.5 acres. Outlet orifices on stormwater BMPs must be a minimum of 2 1/2 inches in diameter.

Every approved measure is recorded in a deed notice filed in the Middlesex County Clerk's Office, with proof submitted to the Township before construction starts. Under Subsection L, no person in control of private property, except a residential lot with one single-family house, may authorize repaving, resurfacing or reconstruction of a surface touching a storm drain inlet unless the inlet is retrofitted to control solids and floatables. Subsection M covers non-major projects: two gallons retained per square foot of excess impervious surface using green infrastructure approved by the Director of Planning & Engineering's designee.