This piece walks through what a tiered permit submittal on CERS actually contains, what CUPA reviewers flag most often, and where the process tends to stall. For the broader regulatory framework (the five tiers, who needs a permit, what each tier requires), see our California tiered permitting overview.

What Actually Gets Filed in CERS

CERS is the filing system, not the permit itself. The authorization to operate under Permit by Rule (PBR), Conditional Authorization (CA), or Conditional Exemption (CE) comes from California regulation: the operator notifies, the CUPA reviews, and CUPA issues an acknowledgment of authorization. CERS is the channel that notification travels through.

A complete tiered permit submittal in CERS has four built-in pages, plus a set of document uploads:

The uploads attach under the Tiered Permitting submittal element:

• Plot plan or map showing where each treatment unit sits on the facility, with unit IDs that match the unit pages.
• Prior enforcement history statement, covering any convictions, judgments, settlements, or orders from the last three years.
• Tank and containment certification. A written statement signed by an independent California-registered professional engineer per 22 CCR §66264.175(c), plus tank system certifications under §66265.191(a) for existing tanks and §66265.192(a) for new tanks.
• Local agency notification. A signed certification listing the local authorities notified of the operation, including the POTW operator if treated water discharges to sewer.
• Property owner notification. If the operator is not the property owner, signed acknowledgment that the owner knows hazardous waste is being treated on the property.

For PBR and CA units, a separate Financial Assurance block in CERS holds the closure cost estimate, the closure mechanism (trust fund, surety bond, letter of credit, insurance, financial test and corporate guarantee, alternative, or multiple), and the financial institution information per §67450.13.

CE units are still subject to the conditions of the exemption and may require notification, records, and closure or decontamination documentation. They are not subject to the financial assurance requirements that apply to PBR and CA. Confirm whether the specific CE unit requires a written closure plan, closure notification, or other documentation.

How the Timing Works

For a PBR fixed treatment unit, the initial notification is generally due 60 days before treatment begins, per 22 CCR §67450.2(b)(2). Transportable treatment units have a different timing rule (45 days per §67450.2(a)(1)), and CA/CE authorization timing should be confirmed against the specific tier and unit type. For FTU notifications (initial, annual, or amended), the CUPA or authorized agency generally has 45 calendar days to acknowledge, deny, or issue a deficiency notice, per §67450.2(b)(4) and §67450.3(d). TTU notifications follow different review windows.

Annual obligations vary by tier:

• PBR annual notification: For fixed treatment units, the default date is January 1 unless the CUPA establishes another date. For transportable treatment units, the default is March 1 unless DTSC sets an alternate date. Confirm your CUPA’s posted deadline.
• Closure cost estimate update (PBR and CA): March 1 of each year, adjusted for inflation. The updated estimate does not have to be uploaded to CERS, but it does have to be maintained and produced on request.
• CA and CE: no annual renewal submittal required, but any change in operation, waste stream, or treatment unit triggers an updated notification.

Common CERS Pitfalls

When we walk facilities for a tiered permit refresh, the same handful of CERS issues come up almost every time. None of them are exotic. They’re just things CERS now surfaces that paper submittals used to hide.

• Unit page narratives that don’t match the regulation. The “Specific Waste Type Treated” and “Treatment Process Description” fields have to map cleanly to one of the waste-and-treatment combinations in 22 CCR §67450.11. Reviewers compare the narrative against the listed combinations directly; vague descriptions trigger deficiency notices.
• PBR claimed for a waste or treatment that doesn’t qualify. PBR applies only to the waste-and-treatment combinations allowed by 22 CCR §67450.11 and only when the operation meets the rule’s conditions. It is not available for reactive wastes, extremely hazardous wastes, or treatment regulated under federal RCRA permitting. Do not assume a waste qualifies for PBR just because it is treated on site.
• Tank certification missing, outdated, or signed by the wrong professional. The certification must be from an independent professional engineer registered in California. CERS reviewers check the license against the Department of Consumer Affairs registry. Tank certifications expire on a five-year cycle; an outdated certification holds up the whole submittal.
• Plot plan that doesn’t label units. A site map used for the Hazardous Materials Inventory may be acceptable if the unit IDs are clearly indicated. Generic floor plans without unit identifiers get bounced.
• Financial assurance miscalculated. Closure cost estimates that don’t include disposal of residuals, decontamination, demolition, sampling, and a PE certification of clean closure tend to come in low. If the total estimate is at or under $10,000 you can claim the exemption, but the exemption applies to total cost across all units, not per unit.
• Treatment Notification not submitted as a separate element. Marking “treats hazardous waste on-site” on the Business Activities page is not the same as submitting the Tiered Permitting element. Both are required.
• CE units left off because “they’re exempt.” Conditionally Exempt units are not unregulated. They still require notification, a tier determination, and adherence to the conditions of the exemption. The exemption is from financial assurance and from certain permitting conditions, not from filing or from all closure obligations.

The most common pattern we see: a facility submitted years ago on paper, the operation has changed since, and the CERS draft built from the old paper packet doesn’t match what’s actually running on the floor. Reviewers catch that on the first read.

What CDMS Does

For a tiered permitting submittal through CERS, we prepare the package end to end: the tier determination, the 18-section compliance manual, the contingency plan with facility drawings, the Phase I-type environmental assessment, the PE-certified tank and containment certification, the closure plan and closure cost estimate, financial assurance documentation where required, the property owner and local agency notifications, and the CERS upload itself. We coordinate with your CUPA on questions and deficiency responses so the package moves through the review window without bouncing.