Environmental Rules in Plainfield, NJ (2026)
3 verified environmental rules for Plainfield, New Jersey, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
In the City of Plainfield, all development needs a stormwater management plan under § 17:12-1. The peak rate of runoff during and after development cannot exceed the predevelopment rate, runoff must be released in its original watershed, and collection systems are designed for a ten year or twenty-five year storm depending on the street classification.
Plainfield Stormwater Management Rules
Some RestrictionsPlainfield Municipal Code § 17:12-1
§ 17:12-1. Stormwater management for non-major development. ... A. All development shall be provided with a stormwater management plan consisting of, but not limited to, inlets, manholes and pipes where necessary for proper surface drainage. The system shall be adequate to carry off and/or store the stormwater and natural surface runoff, which originates not only within the property in question...
Flood Zones
The City of Plainfield has participated in the National Flood Insurance Program since June 25, 1971, and § 17:9-30.102.2 adopts the Union County Flood Insurance Study and FIRM panels effective September 20, 2006. The regulated flood hazard area can be more expansive than the FEMA map under the New Jersey Flood Hazard Area Control Act.
Flood Hazard Area Rules in Plainfield, NJ
Significant RestrictionsPlainfield Municipal Code § 17:9-30.102.2
A. The City of Plainfield was accepted for participation in the National Flood Insurance Program on June 25, 1971. ... Because of these higher standards, the regulated flood hazard area in New Jersey may be more expansive and more restrictive than the FEMA Special Flood Hazard Area. Maps and studies that establish flood hazard areas are on file at the City Hall located at 515 Watchung Avenue, P...
Flood Elevation Requirements
In the City of Plainfield the Local Design Flood Elevation (LDFE) for a delineated watercourse is the best available flood hazard elevation plus one foot of freeboard, or as described by N.J.A.C. 7:13. In Zone AO areas it is the highest adjacent grade plus the depth number plus one foot, or three feet above grade if no depth is given.
Flood Elevation and Freeboard Rules in Plainfield, NJ
Significant RestrictionsPlainfield Municipal Code § 17:9-30.102.3
A. The Local Design Flood Elevation (LDFE) is established in the flood hazard areas determined in Section 17:9-30.102.2, above, using the best available flood hazard data sources, and the Flood Hazard Area Control Act minimum Statewide elevation requirements for lowest floors in A, Coastal A, and V zones, ASCE 24 requirements for critical facilities as specified by the building code, plus addit...
Looking for Union County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Plainfield city rules.
Environmental Rules in Union County →