You've Run Your Pennsylvania Facility for 20 Years Without PAG-03 Coverage and Just Realized You Probably Needed It. Here's How to Confirm It, Get Covered, and Handle the Past With PA DEP.
It usually starts with a conversation. A customer's vendor questionnaire asks for your NPDES permit number. A buyer's consultant asks about stormwater during due diligence. A neighbor's facility gets inspected, or someone reads an article and recognizes their own operation. Then comes the uncomfortable realization: your facility has been running for ten, twenty, maybe thirty years, and it probably should have had a stormwater permit the whole time. Plenty of Pennsylvania facilities end up here, and most of them got there in good faith, because nobody ever told them the rules applied. The answer isn't to panic, and it isn't to keep quiet and hope. Confirm whether coverage is really required. If it is, get covered promptly through PAG-03 or a No Exposure Certification, fix the obvious problems, and get legal advice on how to handle the past. Acting on your own generally puts you in a much better position than waiting for DEP to find you.
Below, we'll walk through how facilities end up without coverage, how to confirm whether you need it, what getting covered looks like for an existing facility, and what to fix right away. We'll also cover the harder question of whether and how to talk with DEP about the years you went without a permit, and what the process tends to cost. If you'd rather talk it through with someone first, feel free to reach out to RMA. These conversations stay low-key, and we'll tell you if you don't need us.
Table of Contents
TL;DR
If you've realized your Pennsylvania facility may have needed a stormwater permit for years, start by confirming it: check your primary industry code, whether anything industrial is exposed to rain, and where your runoff goes. If coverage is required, get it promptly by collecting stormwater samples, preparing a PPC Plan, and filing a PAG-03 Notice of Intent as an existing facility, or by applying for a No Exposure Certification if everything is under cover. Fix obvious problems like open drums and leaks right away. Talk with an environmental attorney about how to handle the past with DEP, because coming forward on your own generally leaves you in a much better spot than being found.
How Pennsylvania Facilities End Up Without a Stormwater Permit
Most facilities that never got stormwater coverage weren't hiding anything. The federal industrial stormwater rules took effect in the early 1990s, and a lot of businesses either predate them or opened without anyone pointing them out. Building permits, zoning approvals, and fire inspections don't trigger a stormwater permit, so a facility can go through every local approval and still never hear the word PAG-03. PAG-03 is PA DEP's general permit for stormwater from industrial facilities. It's part of NPDES, the National Pollutant Discharge Elimination System, the federal permit program for discharges to waterways that DEP runs in Pennsylvania.
Other common stories we hear go like this. A family business grew from a small shop into a manufacturing operation, and nobody revisited what the change meant. A new owner bought a facility and assumed the seller had everything covered. A previous permit lapsed during an ownership change and was never renewed. A plant manager who handled environmental paperwork retired, and the knowledge went with them. Or the business simply never thought of itself as "industrial," which is exactly where the SIC code test catches people. Whatever the reason, the history explains how you got here. It doesn't change what you need to do next.
First, Confirm Whether Your Facility Needs Stormwater Permit Coverage
Before you do anything else, make sure you really needed a permit. Plenty of facilities that worry about this turn out not to need PAG-03 at all. Three questions decide it.
| Question |
What It Means |
| Is your primary SIC code on the list? |
Industrial stormwater rules apply to specific industry categories, mostly defined by Standard Industrial Classification (SIC) code. DEP looks at your primary activity, the one that brings in the most revenue. Many businesses, including auto repair, dealerships, retail, and most contractors, aren't on the list. |
| Is anything industrial exposed to rain? |
If your materials and activities are all indoors or under proper shelter, you may qualify for a No Exposure Certification instead of a permit. You'd still need to file it, though. |
| Where does your runoff go? |
Runoff to a storm sewer, ditch, or stream generally needs coverage. DEP's FAQ says runoff flowing into a municipal combined or sanitary sewer doesn't need stormwater coverage, though the sewer authority's rules still apply. |
Some codes are covered across the board, like lumber and wood products, concrete, chemicals, primary metals, and scrap yards. Lighter manufacturing, like food, printing, and machine shops, is covered only when something is exposed. Trucking, rail, bus, and airport operations are covered only in their vehicle maintenance, equipment cleaning, fueling, and deicing areas. Our article on who needs a stormwater permit goes deeper on the categories, and what counts as stormwater associated with industrial activity explains which parts of a site are in play.
If the answer is that you don't need coverage, write down why, keep that reasoning on file, and move on. If the answer is yes, or it's close enough that you're not sure, keep going. A wrong guess in either direction costs more than getting it confirmed. Also check whether your site discharges to High Quality or Exceptional Value waters under 25 Pa. Code Chapter 93, since those facilities can't use PAG-03 or No Exposure and need an individual NPDES permit instead.
What Getting PAG-03 Coverage Looks Like for an Existing Facility
The good news is that there's a defined path, and DEP expects some facilities to come in this way. DEP's industrial stormwater FAQ tells facilities already operating without coverage to apply as an existing facility requesting new approval. The catch is that existing facilities have to provide stormwater sampling data with the application, so a facility that has never sampled needs to start there. Here's what the process generally involves.
| Step |
What's Involved |
| Evaluate the site |
Map drainage areas and outfalls, the points where stormwater leaves your property, and identify industrial activities and potential pollutant sources |
| Collect stormwater samples |
Sample each representative outfall during a qualifying rain event for the parameters in your industry's PAG-03 appendix |
| Prepare the PPC Plan |
Write a Preparedness, Prevention and Contingency Plan covering pollutant sources, controls, inspections, spill response, and training |
| Notify the municipality and county |
First-time applicants generally have to notify local government and include proof with the application |
| File the Notice of Intent |
Submit the NOI, site maps, sampling results, and the $500 application fee to the DEP regional office for your county |
| Respond to DEP review |
Answer questions and supply anything DEP asks for until coverage is approved |
The PPC Plan is Pennsylvania's version of the stormwater pollution prevention plan other states call a SWPPP, and we compare them in SWPPPs vs. PPC Plans for PAG-03. For a long-uncovered facility, the plan also documents what you're doing now, which matters if questions about the past come up later. Sampling has its own learning curve, so our guide to PAG-03 stormwater sampling is a good read before your first storm. Timing depends on the weather, your site, and DEP's workload, and we cover it in how long PAG-03 coverage takes.
The NOI is signed under penalty of law. Fill it out accurately, including the fact that the facility is existing and hasn't had coverage. Trying to make an old facility look new on the form turns a paperwork problem into a much more serious one.
Is a No Exposure Certification an Option for an Uncovered Facility?
If you're in a covered category but everything industrial happens indoors or under proper shelter, a No Exposure Certification may fit instead of PAG-03. It's a formal statement to DEP that none of your industrial materials or activities are exposed to rain, snow, or runoff. DEP has to approve it, it covers the whole site or nothing, and it's renewed every five years. Existing facilities still have to provide stormwater quality information with the application, and sites discharging to High Quality or Exceptional Value waters aren't eligible.
Be realistic about whether your site qualifies. Uncovered drums, scrap bins, outdoor stockpiles, equipment washed outside, and loading in the open all count as exposure. Some facilities can get there by moving material indoors, adding a roof, or switching to lidded containers. Others can't without a major project, and PAG-03 is the more practical answer. Either way, the goal is to stop operating without some form of approval, so don't let the No Exposure question stall the whole effort. If it's close, plan for PAG-03 while you look at what changes would make No Exposure possible later.
Fixing Obvious Stormwater Problems While You Get Covered
You don't need to wait for coverage to start cleaning up. A facility that's been operating without a stormwater plan for years usually has some obvious issues, and fixing them now lowers your sampling results, shows good faith, and makes the eventual permit easier to live with.
Walk the site after a rain and look at where water goes and what it carries. Common quick fixes include putting lids on dumpsters and scrap bins, sealing and replacing leaking drums, moving containers onto spill pallets or indoors, cleaning up stained ground and spill residue, fixing leaking equipment, sweeping yards instead of hosing them toward drains, and keeping stockpiles away from storm inlets. If you find something that isn't stormwater going into a storm drain, like wash water, process water, or floor drain discharges, stop it. Those discharges aren't allowed under PAG-03 and need their own evaluation. Our article on stormwater best management practices covers more options.
Write down what you fixed and when, with photos if you can. That record helps your PPC Plan and gives you something concrete to point to if anyone later asks what you did once you understood the requirements.
Should You Tell PA DEP About Years Without a Stormwater Permit?
This is the question people lose sleep over, and there isn't one answer that fits every facility. Applying for coverage as an existing facility without prior coverage already tells DEP something about your history. What's less clear is how much more to say, whether to request a meeting, and whether to make a more formal disclosure. Those choices can affect how DEP views the situation, so this is the point where an environmental attorney should be involved, especially if you've had spills, complaints, prior DEP contact, or know of discharges that weren't just stormwater.
We won't predict what DEP will do, because it depends on the facility, the history, what's found, and how it's handled. What we can say is that the factors generally viewed favorably are the ones within your control: finding the problem yourself, moving promptly to get covered, fixing what you can, being accurate and consistent in what you submit, and keeping good records. The factors viewed less favorably tend to be the opposite: knowing about a problem and sitting on it, inaccurate paperwork, or continuing practices you know are a problem.
A few practical points apply no matter how you handle disclosure. Don't destroy or alter old records. Don't let well-meaning employees call DEP to "explain things" without a plan. Coordinate the technical work and the legal strategy so your consultant and your attorney aren't working at cross purposes. And keep the technical work moving, since getting covered is the one step every path has in common.
Why Getting Stormwater Coverage Now Beats Waiting for DEP to Find You
The tempting option is to keep quiet, since you've gone twenty years without a problem. The trouble is that the ways facilities get found don't depend on luck. DEP inspectors visit for other programs and notice a stormwater outfall. A neighbor complains about runoff. A customer or lender asks for your permit number. A buyer's environmental consultant flags the gap during a sale or refinancing. Runoff carries something visible to a stream after a storm. Any of those can happen next month or in ten years, and you don't get to pick the timing.
| If You Act Now |
If You Wait to Be Found |
| You choose the timing and the approach |
DEP, a buyer, or a neighbor sets the timeline |
| You can fix problems before anyone documents them |
Problems are documented as found |
| You can line up legal advice first |
You're responding under pressure |
| A sale or refinancing stays on track |
A deal can stall or reprice during due diligence |
The gap also grows every year you wait. Every storm is another discharge without coverage, and knowing about it changes the picture. Once you've realized the problem, the case for staying quiet gets weaker, not stronger.
What Does It Cost to Get a Long-Uncovered Facility Under PAG-03?
The DEP fees are the small part. PAG-03 carries a $500 application fee and a $500 annual fee. The bigger costs come from the work behind the application, like the site evaluation, mapping, sampling, PPC Plan, and NOI, then the ongoing inspections, sampling, eDMR reporting, and annual reports once you're covered. For a fairly straightforward facility, professional help with the full PAG-03 application typically runs around $5,000 to $10,000, and ongoing compliance support may add $3,000 to $6,000 a year depending on the site and how much you want to hand off. A long-uncovered facility sometimes needs more upfront work, since nobody has mapped the drainage or sampled before. Legal fees, if you involve an attorney, are separate. Our article on how much a PAG-03 permit costs in Pennsylvania goes into more detail, and if you're weighing doing it in-house, see whether you can get a PAG-03 permit yourself.
If you'd like an estimate of what RMA's help would cost for your facility, you can use the free pricing calculator below. There's no email required and no sales call attached.
How RMA Helps Pennsylvania Facilities That Never Had Stormwater Coverage
We're a family-run environmental consulting firm based in New Jersey, and we work with facilities across Pennsylvania on industrial stormwater. We've helped plenty of facilities in exactly this spot, and we don't judge how you got here. We'll start by confirming whether you need coverage at all. If you do, we'll walk the site, map drainage and outfalls, set up sampling, prepare the PPC Plan and NOI or No Exposure application, and work with DEP through review. We're happy to coordinate with your attorney so the technical work supports whatever approach you decide on. We're not lawyers and won't pretend to be, but we can help make sure the facility side is handled right.
There's no pressure and no obligation. You can call us at 888-RMA-0230, send us an email, or fill out the form on our website, and we'll talk through where you stand. If you've just realized your facility may have needed a permit all along, contact RMA and we'll help you figure out the next step.
