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Stormwater Permitting: Understanding New Jersey’s Regulations Preventing Pollution

As climate change drives more frequent and intense rainfall, stormwater permitting regulations are increasingly critical for protecting the environment. In industrial establishments and similar facilities, stormwater runoff can become contaminated and contribute to the pollution of the surrounding ecosystems.    

To ensure facilities practice good environmental stewardship, New Jersey has rigorous permitting requirements for the discharge of contaminated stormwater runoff. This guide will tell you everything you need to know about what types of facilities have obligations regarding stormwater pollution prevention and how to navigate the necessary permitting to avoid fines and regulatory issues.        

What is Stormwater Permitting?

Stormwater permitting is a regulatory process that protects water quality by regulating facilities to minimize pollutants entering stormwater runoff. In New Jersey, the permitting process is primarily regulated by the New Jersey Department of Environmental Protection (NJDEP) under both state and federal laws, particularly the New Jersey Pollutant Discharge Elimination System (NJPDES) regulations and the Federal Clean Water Act.

These regulations are in place because stormwater runoff is a leading cause of water pollution. It can pick up pollutants like oil, fertilizers, chemicals, and sediment as it flows over industrial facilities, roads, grass, parking lots, and construction sites. If not properly managed, stormwater runoff can carry these pollutants into nearby streams, rivers, lakes, wetlands, watersheds, and eventually the ocean.

Get Started on Your Stormwater Permit Today

Stormwater Permit gateway (#78)

What is Stormwater Permitting?

Stormwater permitting is a regulatory process that protects water quality by regulating facilities to minimize pollutants entering stormwater runoff. In New Jersey, the permitting process is primarily regulated by the New Jersey Department of Environmental Protection (NJDEP) under both state and federal laws, particularly the New Jersey Pollutant Discharge Elimination System (NJPDES) regulations and the Federal Clean Water Act.

These regulations are in place because stormwater runoff is a leading cause of water pollution. It can pick up pollutants like oil, fertilizers, chemicals, and sediment as it flows over industrial facilities, roads, grass, parking lots, and construction sites. If not properly managed, stormwater runoff can carry these pollutants into nearby streams, rivers, lakes, wetlands, watersheds, and eventually the ocean.

Get Started on Your Stormwater Permit Today

Stormwater Permit gateway (#78)

Why Stormwater Permitting Matters in New Jersey

New Jersey often leads the country in regulations that protect our environment; therefore, it should come as no surprise that New Jersey’s Department of Environmental Protection (NJDEP) has adopted rigorous stormwater regulations, which include the NJPDES (New Jersey Pollutant Discharge Elimination System) permitting program. Failure to adhere to these regulations not only puts our environment at risk but can also result in fines and other legal entanglements.    

New Jersey often leads the country in regulations that protect our environment; therefore, it should come as no surprise that New Jersey’s Department of Environmental Protection (NJDEP) has adopted rigorous stormwater regulations, which include the NJPDES (New Jersey Pollutant Discharge Elimination System) permitting program. Failure to adhere to these regulations not only puts our environment at risk but can also result in fines and other legal entanglements.    

What Types of Businesses and Facilities Need to Apply for Stormwater Permits in New Jersey?

New Jersey stormwater regulations apply to a wide array of facilities, from construction sites to industrial buildings and municipal infrastructure. How the regulations apply depends on several factors, including the type of facility you operate. For construction sites, there are certain thresholds that, when met, trigger the need for a stormwater permit. For industrial facilities, it is not based on a threshold, but rather the North American Industry Classification System (NAICS) code that the facility operates under.  If you operate under a covered NAICS code, you either need a permit or you have to qualify for a Permanent No Exposure Exemption. Industrial facilities subject to NJPDES permitting include, but are not limited to, various manufacturing facilities, concrete plants, asphalt plants, scrap metal recycling facilities, quarries, and vehicle recycling facilities.

New Jersey stormwater regulations apply to a wide array of facilities, from construction sites to industrial buildings and municipal infrastructure. How the regulations apply depends on several factors, including the type of facility you operate. For construction sites, there are certain thresholds that, when met, trigger the need for a stormwater permit. For industrial facilities, it is not based on a threshold, but rather the North American Industry Classification System (NAICS) code that the facility operates under.  If you operate under a covered NAICS code, you either need a permit or you have to qualify for a Permanent No Exposure Exemption. Industrial facilities subject to NJPDES permitting include, but are not limited to, various manufacturing facilities, concrete plants, asphalt plants, scrap metal recycling facilities, quarries, and vehicle recycling facilities.

Types of Stormwater Discharge Permits in New Jersey

It is important to address stormwater permit issues both during the design and construction of a new facility and during the facility’s ongoing operation. Depending on the type of facility you operate, your permitting requirements may fall under one of the following categories.

General Stormwater Permits

One common NJPDES General Permit is the Basic Industrial Stormwater General Permit (5G2).

  • This permit can be used by industrial facilities that are discharging stormwater and can eliminate the exposure of industrial materials/activities to stormwater (e.g. by covering materials or moving them indoors) within 6 months of authorization.
  • If exposure can’t be eliminated, then more rigorous controls or an individual permit may be required.

There are also several other industry-specific Stormwater General Permits that might apply to your facility.

Individual NJPDES Permits

  • Individual New Jersey Pollutant Discharge Elimination System (NJPDES) permits are used for discharges or activities that are not eligible for a general permit and require a more site‐specific regulatory approach.
  • Once the application is submitted, the NJDEP will write a site-specific permit that fits the operations at the site and may include more stringent compliance requirements.

The importance of Stormwater Pollution Prevention Plans (SPPP)

Almost all NJPDES permits require facilities to develop and implement a Stormwater Pollution Prevention Plan.  While this is officially abbreviated in New Jersey as SPPP, you may see it abbreviated as SWPPP in other states and even hear people refer to it as a “Swip.”  This written document identifies operational practices, responsible personnel, and specific Best Management Practices (BMPs) designed to reduce or eliminate pollutant discharges in your facility’s stormwater runoff. A SPPP describes how the permittee’s stormwater program meets applicable statewide requirements and permit conditions, so you remain in compliance with NJPDES regulations.

At LAN Associates, stormwater permitting is not just a formality; it’s a strategic service that reduces risk of violations and penalties, ensures long-term compliance, and enhances environmental outcomes. LAN can assist with NJPDES compliance from the application phase through, and including, ongoing compliance requirements. 

LAN Associates Stormwater Permitting Services:

  • Preparing permit applications and Requests for Authorization to operate under a NJPDES stormwater discharge permit.
  • Authoring and Updating Stormwater Pollution Prevention Plans (SPPPs).
  • Developing Drainage Control Plans.
  • Coordinating Sampling and Monitoring.
  • Preparing Discharge Monitoring Reports (DMR’s) and Monitoring Report Forms (MRF’s) for submission to NJDEP.

At LAN Associates, stormwater permitting is not just a formality; it’s a strategic service that reduces risk of violations and penalties, ensures long-term compliance, and enhances environmental outcomes. LAN can assist with NJPDES compliance from the application phase through, and including, ongoing compliance requirements. 

LAN Associates Stormwater Permitting Services:

  • Preparing permit applications and Requests for Authorization to operate under a NJPDES stormwater discharge permit.
  • Authoring and Updating Stormwater Pollution Prevention Plans (SPPPs).
  • Developing Drainage Control Plans.
  • Coordinating Sampling and Monitoring.
  • Preparing Discharge Monitoring Reports (DMR’s) and Monitoring Report Forms (MRF’s) for submission to NJDEP.

How to Apply for a Stormwater Permit in New Jersey

Navigating this regulatory environment is easier when you have the technical expertise of an environmental engineer to streamline the process.  You will need a professional familiar with the state requirements for stormwater permitting. These qualifications ensure they possess the experience necessary to help keep your facility in compliance.  

Get Started on Your Stormwater Permit Today

Stormwater Permit gateway (#78)

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