When a CUPA inspector visits your facility, they follow a structured checklist. They are checking whether your hazardous waste storage, handling, and documentation meet California requirements. Most inspections are routine, but if you are not ready, even small gaps can result in notices of violation.
This checklist covers the major areas CUPA inspectors evaluate. Use it to review your facility before they arrive.
Storage Area and Containment
- All hazardous waste containers and tanks are within designated storage areas
- Storage areas have secondary containment (berms, curbs, or double-walled systems) in good condition
- Containment capacity is adequate: at minimum, the volume of the largest container plus sufficient freeboard
- No cracks, gaps, or deterioration in containment surfaces
- Containment areas are kept dry: no accumulated water, spills, or debris
- Containers and tanks are stored on compatible surfaces (no bare soil)
Container Labeling and Marking
- Every hazardous waste container is labeled with the words “Hazardous Waste”
- Labels include the specific contents (not just generic descriptions)
- Accumulation start date is marked on every container
- Labels are legible, not faded or obscured
- Satellite accumulation containers at the point of generation are properly labeled
Accumulation Time Limits
- Large Quantity Generators: waste is shipped within 90 days of the accumulation start date
- Small Quantity Generators: waste is shipped within 180 or 270 days depending on quantity and distance
- Satellite accumulation containers do not exceed 55 gallons (or one quart of acutely hazardous waste)
- Accumulation dates are being tracked and containers are being shipped on schedule
Tank Certification
- All hazardous waste tanks have current PE-stamped certification under Title 22
- Certifications are within their five-year validity period
- Certification reports are on file and available for inspector review
- Any conditional certifications have been resolved (repairs completed, re-tested)
Weekly Inspections
- Hazardous waste storage areas are inspected weekly (required under California regulations)
- Weekly inspection logs are maintained with date, inspector name, and findings
- Any issues identified during weekly inspections have been corrected and documented
- Inspection logs are available for CUPA review going back at least three years
Emergency Equipment and Preparedness
- Spill containment materials (absorbents, spill kits) are accessible near storage areas
- Fire extinguishers are present, inspected, and current
- Emergency contact information is posted
- Facility personnel know emergency response procedures for spills and releases
Training Records
- All employees who handle hazardous waste have completed required training
- Training records are documented with employee name, date, and topics covered
- Training is current: LQGs must provide annual review and refresher training; SQGs must ensure employees are thoroughly familiar with proper waste handling and emergency procedures
- New employees receive training within the required timeframe before handling waste
Documentation and Records
- Hazardous waste manifests are on file for at least three years
- Waste characterization records (analytical results or knowledge-based determinations) are available
- Biennial hazardous waste report has been filed (if applicable)
- CUPA permit or registration is current
- Previous inspection reports and any corrective actions are documented
Download: CUPA Inspection Checklist
Print this checklist and use it for your weekly self-inspections or to prepare before a CUPA visit. Covers all eight categories above in a format you can post in your storage area.
What to Do If You Find Gaps
If you work through this checklist and identify areas that need attention, address them before the inspector arrives. Most gaps are fixable, a missing label, an overdue training session, a container that needs a start date. Fix what you can and document the correction. For a bigger-picture walkthrough, see how to prepare your facility for the inspection.
For larger issues (expired tank certification, containment deficiencies, missing documentation going back years) contact a qualified firm to help you prioritize and address them systematically. Trying to fix everything at once the night before an inspection creates more problems than it solves.
Frequently Asked Questions
How often does the CUPA inspect facilities?
Inspection frequency varies by CUPA and facility type. Large Quantity Generators typically receive annual inspections. Smaller generators may be inspected every two to three years. However, inspections can also be triggered by complaints, spills, or permit renewals. The best approach is to maintain compliance continuously rather than preparing only when you expect a visit.
Can I request more time if I’m not ready for an inspection?
CUPA inspections are typically unannounced. You will not have the option to reschedule. This is why maintaining ongoing compliance matters. If an inspection reveals deficiencies, you will usually have a defined correction period, but the findings will still be documented.
What personal protective equipment should be available in our storage area?
At a minimum, your hazardous waste storage area should have appropriate personal protective equipment (PPE) accessible to anyone working in or near the area. This typically includes chemical-resistant gloves, safety goggles or face shields, and appropriate respiratory protection based on the materials stored. Your CUPA may also check that employees know where the PPE is located and how to use it.
What happens if the inspector finds violations?
The CUPA will issue a notice of violation with specific findings and a timeline for correction. Most violations come with a defined correction period. If you address the issues within that window, you can often avoid penalties. Repeated or serious violations can result in fines.
