When does a New Jersey facility need an NJDEP air permit?

A preconstruction permit under N.J.A.C. 7:27-8 is required before installing, modifying, or reconstructing any source of air contaminant emissions above de minimis thresholds. This includes boilers, generators, spray booths, printing presses, storage tanks, and many manufacturing processes. Facilities with potential emissions above major-source thresholds also need a Title V Operating Permit under N.J.A.C. 7:27-22.

What is the difference between a preconstruction permit and a Title V permit?

A preconstruction permit (also called a Permit to Construct / Certificate to Operate) authorizes you to install and operate a specific piece of equipment. A Title V Operating Permit is a facility-wide federal operating permit required for major sources — generally 100 tons/year of any regulated pollutant, 10 tpy of a single HAP, or 25 tpy of combined HAPs.

What is a General Permit and when should I use one?

NJDEP General Permits (GP) are pre-approved permit templates for common equipment such as emergency generators (GP-005A), small boilers (GP-004), and gasoline dispensing (GP-002). Filing under a GP is faster and cheaper than a source-specific permit, but the equipment must strictly meet every eligibility condition in the GP.

How long does an NJDEP air permit take to issue?

General Permits are typically issued in 30–60 days. Source-specific preconstruction permits average 6–12 months. Title V permits and permit modifications involving public notice usually take 12–24 months. Envicon sequences work so long-lead permitting starts before final equipment procurement.

Who must file an NJDEP annual Emission Statement?

Any facility holding an operating permit for sources emitting 25 tons per year or more of NOx or VOC (10 tpy in the Ozone Transport Region for certain source categories), 100 tpy of CO, SO2, or PM10, or 5 tpy of any listed HAP must file an annual Emission Statement through NJDEP Online by May 15 for the prior calendar year.

What triggers a permit modification versus a new permit?

Physical or operational changes that increase potential emissions, add new pollutants, or change compliance parameters trigger a modification. Minor changes (Administrative or Minor Modifications) can be processed in 60–90 days; significant modifications follow the same track as a new preconstruction permit and require public notice for Title V facilities.

Call Now(917) 764-2171

NJ Facility Owner Guide

NJDEP Air Permitting Guide

Preconstruction permits, Title V Operating Permits, General Permits, and annual Emission Statements — what triggers each, how long they take, and where facilities most often get tripped up in New Jersey.

100% lender approval on Phase I ESAs
1-week priority Phase I turnaround
Fixed-fee, same-day quotes

Talk to a permit engineer (917) 764-2171

Free scoping call — fixed-fee quote with the scope locked before we start.

The four NJDEP air permit tracks

NJDEP's Bureau of Air Permits runs four parallel tracks under N.J.A.C. 7:27: General Permits for common equipment, source-specific preconstruction permits (Permit to Construct / Certificate to Operate) for larger or non-standard sources, Title V Operating Permits for major sources, and annual Emission Statements for reportable facilities. Most projects touch at least two of these. Envicon's NJ Air Permitting practice manages all four end-to-end.

Common triggers

New boiler, furnace, or process heater above 1 MMBtu/hr input
Emergency or standby generator over 37 kW (approximately 50 hp)
New or modified spray booth, coating line, or printing press
Storage tank changes affecting VOC or HAP throughput
Manufacturing process changes that raise potential-to-emit
Facility becoming a major source (Title V applicability change)

How the process runs

Step 1
Applicability Determination
Confirm which subchapters apply — 7:27-8 (preconstruction), 7:27-19 (NOx control), 7:27-22 (Title V), plus federal NSPS/NESHAP overlays. Envicon issues a written applicability memo before any filing.
Step 2
Emissions Inventory & Modeling
Quantify potential-to-emit (PTE) for each source, apply AP-42 or manufacturer factors, and run AERSCREEN/AERMOD dispersion modeling where State-of-the-Art (SOTA) or risk screening is triggered.
Step 3
Permit Application
Prepare and submit through NJDEP's RADIUS software or NJDEP Online — including equipment inventory, control device specifications, monitoring plan, and Compliance Plan narrative.
Step 4
Public Notice & Draft Permit
Title V and significant modifications require a 30-day public comment period and EPA 45-day review before the final permit issues.
Step 5
Certificate to Operate & Ongoing Compliance
Once issued, track recordkeeping, semi-annual monitoring reports, deviation reports, annual compliance certifications, and Emission Statement filings.

FAQ

Frequently asked questions

Need help with an NJDEP air permit?

Envicon prepares applicability memos, RADIUS applications, Title V packages, and Emission Statements for facilities across New Jersey.

Request a scope & fee See NJ Air Permitting services