Irvington, NJ Environmental Rules: Stormwater Management (2026)

Article I of Chapter 550, adopted in 2007 and rewritten in its entirety on September 11, 2023 by Ord. No. MC 3840, sets minimum stormwater management requirements and controls for what the code calls 'major development' (§ 550-1B). The threshold is a quarter acre: § 550-2 defines major development to include the disturbance of a quarter acre or more of land since February 2, 2004, the creation of a quarter acre or more of regulated impervious surface since that same date, or the creation of a quarter acre or more of regulated motor vehicle surface since March 2, 2021.

An applicant seeking approval for a covered project must submit a full site development stormwater plan, including a topographic base map, an environmental site analysis, hydrologic and hydraulic calculations, and a maintenance and repair plan, all reviewed by the municipality's review engineer (§ 550-6). Once a facility is built, general maintenance obligations continue: if a stormwater facility becomes a danger to public health or safety, or needs repair, the Township must notify the responsible person in writing, who then has 14 days to complete the maintenance or repair to the municipal engineer's satisfaction before the Township can step in, do the work itself, and bill the cost, which can become a lien on the property if unpaid (§ 550-7B(4)).

The article also sets design standards for storm drain grates and curb inlets to keep trash and debris out of the system, tied to New Jersey Department of Transportation bicycle-safe grate specifications (§ 550-4).