California Tiered Permitting for On-Site Hazardous Waste Treatment
If your facility treats any of its own hazardous waste on site (pH adjustment, neutralization, precipitation, filtration, drum rinsing, can crushing, cyanide oxidation, or anything similar), California requires that treatment to be authorized under a program called tiered permitting.
If your facility treats any of its own hazardous waste on site (pH adjustment, neutralization, precipitation, filtration, drum rinsing, can crushing, cyanide oxidation, or anything similar), California requires that treatment to be authorized under a program called tiered permitting.
The Department of Toxic Substances Control (DTSC) sets the program. Your CUPA (your local Certified Unified Program Agency, which may be a county environmental health department, fire department, or another local agency depending on jurisdiction) administers it locally. You file through CERS, the state’s online environmental reporting portal. If you already know you need help with a tiered permit (new submittal, renewal, deficiency letter, expansion, or recovery from an inspection), call (925) 551-7300 and we’ll scope it.
If you’re not sure whether this applies to you, you’re in the right place. Most facilities don’t go looking for “tiered permitting” by name. The need surfaces during a CUPA inspection, during a tank certification visit, when CERS flags a treatment unit that was never reported, or when a regulator hands the facility a letter that says something the facility doesn’t fully understand. The rest of this page is the plain-English version of what tiered permitting is, who needs it, what the five tiers are, what a complete submittal contains, and how California-specific tiered permitting differs from the federal Tier II reporting it often gets confused with.
How to Tell if This Applies to Your Facility
There’s a three-part test we run when scoping any tiered permitting question. The same test works for self-identification:
1. Is the material a waste?
Something you no longer intend to use as-is, that you’re going to discard, recycle, or process out.
2. Is the waste hazardous?
Either federally listed/characteristic (RCRA) or California-only hazardous (non-RCRA).
3. Is treatment occurring?
Anything that changes the waste’s physical, chemical, or biological character before it leaves the site. pH adjustment, neutralization, precipitation/flocculation, phase separation, filtration, drying, drum rinsing, can crushing, evaporation of a hazardous waste, and cyanide oxidation all count.
If all three answers are yes, you’re inside the tiered permitting program. If you’re a generator who only stores hazardous waste in containers and ships it offsite for disposal, you’re not in tiered permitting (you’re under generator standards). If you treat waste that isn’t hazardous, you’re not in tiered permitting either, even if the output ends up hazardous. The distinction matters: many facilities have been told they “need a permit” when what they actually need is a different California program. We sort that out in the scoping conversation.
Why facilities typically call us about tiered permitting:
- The CUPA conducted an inspection and issued a deficiency letter or notice of violation referencing a treatment unit, a missing tank certification, an outdated closure cost estimate, or a notification that was never filed.
- An inspector said the facility “needs tier two reporting.” (This is almost always confusion between federal Tier II inventory reporting and California tiered permitting. Always ask for the original letter; the two programs are different.)
- A facility expansion (new plating line, new chemistry, new volume) has changed the treatment operation enough that the existing permit no longer matches reality.
- CERS flagged a treatment unit during a routine HMBP update that nobody realized was a permitted activity.
- A tank certification came due (the 5-year cycle), and the tank in question is a treatment tank, which folds tank certification into a broader tiered permitting question.
- An annual deadline was missed (for PBR fixed treatment units, the default annual notification date is January 1 unless the CUPA sets an alternate; for transportable treatment units, March 1 unless DTSC sets an alternate; closure cost updates are also due by March 1).
- A previous EHS provider departed mid-cycle, leaving an incomplete submittal or no current file.
- A new facility setup or relocation surfaces the full permit stack at once, and tiered permitting is one of the pieces.
If any of those sound like your situation, the rest of this page will tell you what’s involved.
What Tiered Permitting Covers: On-Site Hazardous Waste Treatment
Tiered permitting authorizes on-site treatment of hazardous waste, scaled to the hazard and complexity of the operation. The program is established by the California Hazardous Waste Control Law and implemented in Title 22 of the California Code of Regulations. DTSC sets the rules. Your local CUPA administers, inspects, and enforces them. You file submittals electronically through CERS, the same portal your facility already uses for HMBP and chemical inventory reporting.
Two structural details to know up front:
- Treatment unit types. Most facilities have Fixed Treatment Units (FTUs) built into the building or process line. Some operate Transportable Treatment Units (TTUs) that can be moved between locations. Most CDMS clients have FTUs. The unit type affects which forms apply and how the unit is described in the compliance plan.
- Two categories of treaters. The five tiers split into two categories:
- Category A is for facilities that treat waste not generated at their own facility (commercial treaters). These operate under either a Full Permit or a Standardized Permit.
- Category B is for facilities that treat only the hazardous waste they generate on site. These operate under Permit by Rule, Conditional Authorization, or Conditionally Exempt status. Most CDMS clients are in Category B.
The Five Tiers, at a Glance
| Tier | What it authorizes | Who it’s for | Regulatory burden |
|---|---|---|---|
| Full Permit | The most rigorous tier. Higher-hazard treatment of waste, including waste received from off-site. | Commercial treatment, storage, and disposal facilities (TSDFs). | Highest. Full Part B-style permit application, public participation, multi-year process. |
| Standardized Permit | A streamlined permit for certain specified or higher-volume operations. | Facilities that meet defined operational criteria. | High, but more predictable than a Full Permit. |
| Permit by Rule (PBR) | Authorization “by rule” for typical on-site industrial treatment that meets the regulatory conditions. | Manufacturers, plating shops, electronics, aerospace, alloy processors treating their own waste. The most common CDMS engagement. | Moderate. Notification, compliance plan, contingency plan, tank certification, closure cost estimate, financial assurance where applicable. |
| Conditional Authorization (CA) | Authorization for specified lower-risk treatment of limited waste streams under defined operational conditions. | Facilities with narrower, specifically authorized treatment activities. | Moderate-to-light. Notification and program documents required; no annual renewal submittal. |
| Conditionally Exempt (CE) | The lowest tier. Specified narrow treatment activities exempt from most permitting conditions but still subject to notification and standards. Sub-categories include CESQT, CESW, CE-CL, and CEL. | Facilities with very limited, specifically listed treatment activities. | Lightest, but real. Notification and adherence to listed conditions. |
What’s in a Tiered Permitting Submittal
A complete tiered permitting submittal is a multi-component package, and one weak component stalls the whole thing. The CUPA reviews the package as a unit. When we’ve seen a deficiency letter with eleven items on it, the eleven items were usually spread across the components below; a problem in any one of them holds up the entire permit.
The components, in the order they typically appear in a Permit by Rule package:
- Tier determination. Confirms which tier the operation belongs to and which forms apply.
- CERS notification and submittal. The official filing to your CUPA through the state portal, on the right forms for the tier.
- 18-section compliance plan. A narrative built on CCR Chapter 6, 7, and 9 standards. Covers narrative descriptions of each treatment unit, generator standards, tank standards, inspection schedules, written operating instructions, waste analysis plans, residuals management, training documentation, emergency procedures, and the additional CUPA-specific items each county requires.
- Contingency plan with facility drawings. What happens if something goes wrong, who responds, and a current plot plan / facility drawings showing treatment areas, storage, drains, exits, and emergency equipment.
- Phase I-type environmental assessment. A site-history and operational assessment in the lineage of the DTSC 1151 checklist.
- Tank and containment certification (PE-certified). Applicable hazardous waste treatment tank systems and associated secondary containment and ancillary equipment require a PE-certified assessment under the relevant Title 22 tank-system requirements. For covered systems, the assessment is generally valid for no more than five years or the remaining service life of the tank system, whichever is less. Inspectors are increasingly vigilant about piping; we include it. An expired or missing tank-system certification can prevent the CUPA from accepting the package and can lead to a deficiency or violation.
- Closure plan and closure cost estimate. The plan for shutting the unit down at end of life and the cost estimate to do so. The closure cost estimate is updated annually (typically March 1) and is the basis for financial assurance.
- Financial assurance documentation. Required where the closure cost estimate crosses the regulatory threshold.
- Specialized waste streams. Cyanide treatment carries its own template set and authorized methods (oxidation with chlorine, sodium hypochlorite, or ozone peroxide). Other specialized chemistries have their own requirements.
For most engagements, the client supplies the chemical inventory, plot plans, treatment unit details (count, type, FTU vs. TTU), tank specifications, square footage of treatment areas, and any prior-provider documentation and regulatory correspondence. Our team assembles, drafts, PE-certifies, QC-reviews, and files the rest.
How the Process Works
A tiered permitting engagement is project-managed in stages. We don’t quote day counts; the timeline depends on the tier, the number of treatment units, the condition of the prior file, and the responsiveness of any regulator already involved. The stages are consistent:
Scoping and document review.
We review what you have (prior submittals, tank certs, inspection letters, CERS records). For annual renewals, much of the work can happen remotely in advance of a January or March deadline.
Site visit.
A consultant walks the facility, observes the treatment operations, inspects tanks and containment, verifies the chemical inventory in place, and confirms the plot plan reflects current reality. This is also when we look for anything that will affect the package: missing piping, unmarked drains, expired bracing, deficiencies the facility didn’t know about.
Forms and program preparation.
The largest single component. The compliance plan, contingency plan, operating instructions, closure plan, closure cost estimate, and notification forms are drafted, supported by the site data.
Tank and containment certification.
The PE-required certification is prepared as part of the package and dated to fall within the 5-year cycle.
QC review.
Every tiered permitting package goes through QC before it leaves our shop. This is not optional; submittals that bypass QC create deficiency letters. Multiple components, one mismatched detail, the whole package comes back.
Client review.
You see the full package before anything is filed.
CERS submittal.
Filed electronically through the CERS portal.
Agency coordination.
We respond to CUPA questions, deficiency letters, or follow-up requests until the permit is in good standing.
When a TP engagement is bundled into Comprehensive Compliance Management, the annual closure cost update and any PBR renewal can be handled as line items on the regular visit cycle, with the chemical inventory database we maintain for your facility doing most of the inventory grunt work.
Federal Tier II vs. California Tiered Permitting
This is the single most common point of client confusion, and it’s worth getting straight before you call any consultant.
- Federal Tier II reporting is the EPCRA/SARA Title III chemical inventory program. It’s about how much of which hazardous chemicals are on hand at your facility, reported annually. In California, the federal Tier II requirement is satisfied through the HMBP (Hazardous Materials Business Plan) you file in CERS. If an inspector says “you need to do your Tier II,” they mean an HMBP/inventory submission, not a treatment permit.
- California tiered permitting is a completely separate program. It’s about authorizing on-site treatment of hazardous waste. It’s filed in CERS as well, but on different forms, under different regulations, with different requirements. The two programs share a portal and nothing else.
When a client tells us “the inspector said we need tier two,” our first move is always to request the original inspection report or letter. The word the inspector used in the field is often not the program the inspector intended. The same conversation often surfaces both an HMBP update and a tiered permitting issue, and they need to be handled as two distinct workstreams.
California Agencies and Where This Fits
Three agencies show up in a California tiered permitting engagement:
DTSC (Department of Toxic Substances Control).
The state agency that sets the tiered permitting program and writes the Title 22 regulations.
CUPA (your local Certified Unified Program Agency).
The agency you’ll actually deal with: which may be a county environmental health department, fire department, or another local agency depending on jurisdiction. The CUPA receives the submittal, conducts inspections, issues deficiency letters, and enforces.
CERS (California Environmental Reporting System).
The portal you file through. Since 2013, CERS has made omissions much more visible than paper submissions ever did, which is why facilities that were quietly non-compliant for years are now getting flagged.
Federal EPA has a background role; the program evolved from federal Part A/Part B permitting and DTSC operates with EPA authorization. In practice, you will not interact with EPA on a tiered permitting engagement. Your inspector will be from the CUPA.
FAQ
What is tiered permitting in California?
Tiered permitting is California’s program for authorizing on-site treatment of hazardous waste. A facility that treats its own hazardous waste (rather than only generating and shipping it offsite) authorizes that treatment at one of five tiers, scaled to hazard and complexity. The program is established by the California Hazardous Waste Control Law, implemented in Title 22, and administered locally by your CUPA.
What is a permit by rule?
Permit by Rule (PBR) is the most common of the five California tiered permitting tiers. PBR authorizes typical on-site industrial treatment “by rule,” meaning the facility is authorized to operate provided it meets the regulatory conditions and submits the required notification, compliance plan, contingency plan, tank certification, closure plan, and closure cost estimate. PBR engagements typically include an annual renewal submittal and an annual closure cost update.
Do I need a permit to treat my own hazardous waste in California?
Yes, in nearly all cases. If the material is waste, the waste is hazardous, and treatment is occurring, the activity falls under California tiered permitting. The tier that applies depends on the operation. A narrow set of recycling and silver-recovery operations are exempt. A tier determination is the contracted scoping step that gives you a defensible answer.
What’s the difference between Tier II and tiered permitting?
Federal Tier II is chemical inventory reporting under EPCRA/SARA, satisfied in California through the HMBP in CERS. California tiered permitting is on-site hazardous waste treatment authorization under Title 22. Both are filed in CERS; they share a portal and nothing else. Inspectors and clients frequently use “tier two” to refer to either one, which is why we always ask to see the original letter.
How often do I have to renew or update a tiered permit?
For PBR fixed treatment units, the default annual notification date is January 1 unless the CUPA or authorized agency establishes another date. Transportable treatment units follow a March 1 annual notification framework unless DTSC sets an alternate date. Many local programs use their own posted deadlines, so confirm the date with your CUPA. PBR and CA facilities update closure cost estimates annually (by March 1). Tank and containment certification is on a 5-year cycle. CA and CE tiers do not require annual renewal submittals but still require ongoing compliance with their conditions.
What happens if I get a CUPA deficiency letter?
A CUPA deficiency letter typically lists items the inspector or reviewer flagged across one or more components of the submittal (compliance plan, tank cert, closure cost estimate, contingency plan). The letter usually sets a response deadline. The package needs to be corrected end-to-end, not just on the flagged items, because deficiencies often reveal upstream gaps. Bring the original letter when you call; the response strategy depends on what it says.
Working With CDMS on Tiered Permitting
CDMS has been writing California tiered permitting submittals since the program existed. The template library traces back to 1992 PBR seminar manuals. Most of our tiered permitting work is for California manufacturers, metal finishers and platers, electronics and semiconductor facilities, aerospace, and alloy processors. We treat the deliverable as one package with required components, not a stack of separate forms. Tank and containment certification is part of the work; piping certification is included; QC review is mandatory; and the chemical inventory we already maintain for facilities on Comprehensive Compliance Management removes the inventory grunt work that drives cost on most TP projects.
Our consultants travel to your facility. We don’t conduct tiered permitting work from a desk. The site visit is where we catch the things that show up in deficiency letters: the unmarked drain, the bracing that came loose during a remodel, the new chemistry on the plating line that nobody added to the compliance plan, the tank cert that quietly expired.
Related Tiered Permitting Guides
- Does your facility need a tiered permit? On-site treatment and the determination test
- The five tiers of California hazardous waste treatment permitting
- Permit by Rule (PBR) compliance in California
- What’s in a tiered permitting submittal: required components
- Federal Tier II vs. California tiered permitting
- Tank and containment certification in tiered permitting
- Closure plans and closure cost estimates for treatment units
- Submitting your tiered permit through CERS
- Common tiered permitting violations and what CUPA inspectors look for
- Keeping your tiered permit current: annual notifications and ongoing management
Related CDMS service: hazardous waste tank certification. PE-stamped tank and containment certification is a required component of most tiered permitting submittals.
Trusted throughout California
BSY started working with CDMS last year after our in-house EHS person departed the company. CDMS reviewed our existing operational permits as well as any additional Federal, State and Local regulations that could apply and helped us to create a comprehensive compliance calendar to track regulatory deadlines and submittal due dates. The CDMS team does an excellent job of tracking everything and can be relied upon to complete the forms accurately and assist with submittals, allowing me to focus on our business.
Speak with a CDMS EHS expert
Tell us about your facility and your deadline. You’ll get a clear read on what applies and a scoped plan to handle it.