The proposed Unified Stormwater Rule amendments are now available for public review and comment. This rule includes amendments to Chapter 31 and Chapter 19.1 of Title 15 of the Rules of the City of New York (RCNY), changing requirements for how stormwater is managed on all new development and redevelopment sites that discharge to City sewers.  The rule also includes a revised Stormwater Manual specific to New York City, which will provide guidance for permit applicants. The proposed rules are available in the City Record:   

• Chapter 31 will update stormwater quantity and flow rates for Site Connection Proposals and House Connection Proposals 
• Chapter 19.1 will expand the Stormwater Permitting Program, setting new thresholds for compliance and a new retention-first approach for design of post-construction stormwater management practices (SMPs).

The NYC Stormwater Manual is also available for review and comment.

Comments and questions on the draft rules and the NYC Stormwater Manual can be submitted to nycrules@dep.nyc.gov.

A recording of the informational briefing will be available on the DEP website after the event.