Industrial wastewater and process water systems.
The treatment system behind a production line — the DAF and clarifier at a food plant, the pH neutralization and metals precipitation train at a finishing shop, the equalization tank and biological system at a beverage or seafood processor, the pretreatment step before the sewer, the recycle loop at a concrete or glass plant — is an industrial wastewater treatment system with a classification, a permit, and in most cases a licensed operator requirement. We provide the NJDEP Class N operator, run the system or oversee the people who do, tie the sampling to our own lab, and keep the records that turn a good month into a clean DMR.
Services
Licensed operator coverage
Operator of record under an NJDEP Class N license, with the notification to NJDEP’s Examination and Licensing Unit that goes with a change of operator.
Classification review
How the system classifies (N1 through N4), what that class requires, and whether a process or treatment change has moved it.
Routine operation or oversight
Site visits at the frequency the system and the permit need; chemical feed, pH and flow control, equalization, solids handling and sludge wasting; operator logs and run records an inspector can read.
Process monitoring
Field testing on site (pH, dissolved oxygen, settleable solids, turbidity, residual chlorine, and whatever the process calls for) so the operator knows before the lab does.
Compliance sampling and DMRs
The sampling schedule written to the permit, samples pulled on schedule by the people who run the system, analysis through our NELAP laboratory and partner labs, and the discharge monitoring report.
Pretreatment and indirect discharge
Operating the system behind a sewer connection to local limits, significant indirect user permit conditions, and federal categorical standards, with the self-monitoring reports those require.
Process water and recycle systems
Cooling tower and boiler blowdown, rinse water recycle, truck washout and recycled process water at concrete plants, closed loops and the discharge they still produce.
Backup coverage
A licensed operator when the facility’s own is out, on leave, or gone, so the system is never uncovered.
Start-up and commissioning
A new or modified system taken through start-up: seeding a biological process, setting chemical doses, establishing the baseline the permit will judge it against.
Troubleshooting
Settling, pH swings, solids carryover, foaming, odor, a flow or load change after a production change; diagnosed by people who have seen it before and connected back to the permit so the fix is also the record.
Applicability
In New Jersey the owner of an industrial wastewater treatment system that discharges under a NJPDES permit — an individual permit or a general permit authorization — must employ a licensed operator holding the class of license NJDEP assigns to the system (N.J.A.C. 7:10A-1.10). NJDEP classifies each system N1 through N4 on a point scale that weighs the treatment processes in use, the flow, where the discharge goes, and the toxicity of the industry’s wastewater by NAICS code (N.J.A.C. 7:10A-1.14). The operator’s license must be at or above the system’s class. Class 1 and 2 systems need a licensed operator in responsible charge who is on site a significant amount of time; class 3 and 4 systems need a full-time one unless NJDEP grants an automated-system exemption.
Not every system needs one. A treatment system that discharges to a sewer without a NJPDES permit, a system covered under a general permit for stormwater only unless that permit specifically requires an operator, a gravity oil/water separator or sedimentation basin treating stormwater alone, and a small pretreatment system (under 4,000 gallons a day) permitted only because federal categorical standards apply are each exempt. The line moves when the facility adds a process, adds treatment, changes what it discharges, or receives an individual permit — which is usually how a facility that never needed an operator finds out it does.
Typical situations
- The operator of record retired, and the permit requires one by name
- A food or beverage processor added a line and the DAF can’t keep up — BOD and TSS over the limit
- A finishing shop with a pH excursion on the chart recorder and a DMR due
- A significant indirect user permit from NJDEP, at a facility that had only ever dealt with the sewerage authority
- A new system with a Treatment Works Approval that has never been started up
- Logs on a clipboard, lab reports in email, and an NJDEP compliance evaluation on the calendar
FAQ
Does my industrial wastewater treatment system need a licensed operator?
If the system discharges under a NJPDES permit — an individual permit or a general permit authorization — yes, with a license class at or above the system’s classification, unless one of the exemptions in N.J.A.C. 7:10A-1.10 applies: no NJPDES permit is required (most facilities permitted only by the local sewerage authority), the only coverage is a stormwater general permit that does not specifically require an operator, the system is a gravity oil/water separator or sedimentation basin treating stormwater alone, or it is a small pretreatment system permitted solely under federal categorical standards. We hold the Class N license and serve as operator of record for the systems it covers.
What is a Class N license, and what do N1 through N4 mean?
The N license is New Jersey’s industrial wastewater treatment operator license, separate from the S license for municipal plants. NJDEP classifies each industrial system 1 through 4 on points for the treatment processes in use, flow, discharge destination, and the toxicity group of the facility’s NAICS code; the operator’s license class must match or exceed the system’s class. Class 3 and 4 systems require a full-time licensed operator unless NJDEP grants an automated-system exemption.
Our pretreatment system discharges to the sewer. Does it need a licensed operator?
Usually not, when the only permit is from the local sewerage authority. It does when NJDEP has issued an individual NJPDES significant indirect user permit for the facility — unless the system treats under 4,000 gallons a day and is permitted solely because federal categorical standards apply. The sewerage authority’s own permit still sets limits and self-monitoring, and the system still has to run; the license requirement is a separate question from whether it needs an operator.
How often does the operator have to be on site?
For class 1 and 2 systems the rule’s language is a significant amount of time, not necessarily full time, and what that means depends on the system: chemical feed, biological processes, and variable production need more frequent attention than a settling tank. We set the visit frequency to the system and the permit and put it in writing. Class 3 and 4 systems require a full-time licensed operator unless NJDEP grants an automated-system exemption.
What happens when our licensed operator leaves?
While the system is uncovered, the owner must obtain a licensee holding a license no more than one class below what the system requires. Once a new operator starts, the owner notifies NJDEP’s Examination and Licensing Unit in writing within two weeks. We provide the interim coverage and, where it fits, the new operator of record.
Need a Class N operator for an industrial system, or help getting one back inside its limits?
Tell us what the system treats, what it discharges to, and who has been running it. We’ll tell you what coverage looks like.