Oyster Bay, NY Environmental Rules: Stormwater Management (2026)

L. No. 6-2018), regulates "land development activity," defined in § 204-6 as construction, clearing, grading, excavating or fill that disturbs one acre or more, or a smaller disturbance that is part of a larger common plan of development. Section 204-4 designates a Stormwater Management Officer, identified in § 204-6 as the Commissioner of the Department of Public Works or a designee, who accepts and reviews every Stormwater Pollution Prevention Plan (SWPPP), may hire a registered professional engineer to review plans at the applicant's cost, or accept a licensed professional's certification of compliance.

Section 204-5 exempts agricultural activity, routine maintenance disturbing under five acres, fence and utility pole installation, home gardening, and subdivisions or building permits already approved before the chapter's effective date. The chapter separately requires phasing plans limiting the maximum disturbed area at one time (§ 204-7) and, for qualifying projects, permanent post-construction water quality and quantity controls (§ 204-9). The Town can also require a performance bond, cash escrow or irrevocable letter of credit before construction begins to guarantee both completion and long-term maintenance of stormwater facilities (§ 204-12).

This chapter works alongside Chapter 181, Prohibition of Illicit Discharges, Activities and Connections to Separate Storm Drain System, which separately bars non-stormwater discharges into the Town's municipal storm sewer system.