Environmental compliance in California isn’t one program. It’s a web of overlapping requirements enforced by multiple agencies, each with its own rules, timelines, and inspection cycles. A single facility can be regulated by the local CUPA (which may be a county environmental health department, fire department, or another local agency depending on jurisdiction), DTSC, the regional Air District, the Regional Water Quality Control Board, and a local sanitation district. All at the same time. All independently.
Understanding which programs apply to your facility is the first step. Here’s the landscape.
Hazardous Materials Management: HMBP and CERS
If your facility handles or stores hazardous materials above reporting thresholds, you’re required to maintain a Hazardous Materials Business Plan filed through CERS, California’s online Environmental Reporting System. The HMBP includes your chemical inventory, facility site maps, emergency procedures, and emergency contact information.
The HMBP is enforced by your local CUPA. In most California jurisdictions, the CUPA is the local fire department or a division of the county health department. They inspect on a recurring cycle and expect the plan to be current, meaning the chemical inventory matches what’s actually on site, the site maps reflect the current layout, and the emergency contacts are people who still work at the facility.
Annual certification is required. Any time your chemical inventory changes significantly (new materials brought on site, quantities increasing above thresholds, storage locations changing), the HMBP must be updated and resubmitted.
Hazardous Waste: DTSC and RCRA
If your facility generates hazardous waste (and most industrial and commercial operations do, whether it’s spent solvents, waste oil, expired chemicals, or manufacturing byproducts), you’re regulated under both federal RCRA (Resource Conservation and Recovery Act) requirements and California’s hazardous waste management program administered by DTSC (Department of Toxic Substances Control).
Key requirements include proper waste characterization (determining whether a waste is hazardous), labeling, accumulation time limits based on your generator status, manifesting shipments to licensed treatment and disposal facilities, and recordkeeping. California requires generator manifest copies to be submitted to DTSC within 30 days for applicable paper or hybrid manifest shipments. This submission is not required for manifests initiated and processed entirely through EPA’s e-Manifest system. It’s a state-specific requirement that facilities transferring from other states sometimes miss.
Your facility needs an EPA ID number, and it must be current and associated with the correct business name and address. Generator status (very small, small, or large quantity generator) determines accumulation limits, storage timelines, and reporting obligations.
Not sure which environmental programs apply to your operations? Call (925) 551-7300. We can help you sort it out.
Stormwater: Water Boards and SMARTS
California’s Industrial General Permit requires facilities with certain industrial activities to enroll with the State Water Resources Control Board, develop a Storm Water Pollution Prevention Plan (SWPPP), implement best management practices, conduct stormwater sampling, and file annual reports through SMARTS, the State Water Board’s online reporting system.
Whether your facility needs to enroll depends on your Standard Industrial Classification (SIC) code and the specific activities conducted at your site. But SIC codes don’t always tell the full story. A food distribution center whose primary SIC code doesn’t trigger the permit may still need enrollment if it has a diesel fueling station or other industrial activity with stormwater exposure. The determination requires looking at what actually happens at the facility, not just the industry classification.
For facilities already enrolled, ongoing compliance includes maintaining the SWPPP with current site maps and drainage flow diagrams, sampling at the required frequency, analyzing for the pollutants relevant to your operations, and filing reports on time. Missed sampling events or late reports can trigger compliance issues even at facilities that are otherwise well-managed.
Air Quality: Air Districts and Permits
Operations that generate air emissions may require permits to operate from the local Air District. In Southern California, this is the South Coast Air Quality Management District (SCAQMD). In the Bay Area, it’s the Bay Area Air Quality Management District (BAAQMD). Other regions have their own Air Districts, each with their own rules and permit structures.
Common emission sources that require permits include paint spray booths, solvent cleaning operations, combustion equipment (boilers, generators), grinding and abrasive blasting, and certain welding operations. The type of permit and the conditions attached to it depend on the emission source, the materials used, and the volume of emissions.
What catches many facilities off guard is that adding a piece of equipment, changing a process chemical, or modifying an operation can trigger a permit requirement, even if the original installation didn’t need one. Air quality regulations also include rules that apply without a specific permit, such as SCAQMD’s Rule 1460 for metal recycling and shredding operations. An evaluation of your operations against the applicable Air District rules determines what’s required.
Wastewater Discharge: Local Permits
Facilities that discharge industrial wastewater to a sewer system may need a permit from the local sanitation district or the Regional Water Quality Control Board. Requirements vary by jurisdiction and depend on the volume and characteristics of the discharge.
A wastewater discharge permit typically includes limits on specific pollutants, a self-monitoring program requiring regular sampling and reporting, and periodic facility inspections by the permitting agency. Permit conditions can change over time. A facility may be sampling for the right parameters but at the wrong frequency because the requirements were updated since the permit was issued.
Facilities that don’t discharge to a sewer system may still have wastewater obligations if they generate process water that must be collected and disposed of as waste.
SPCC: Spill Prevention for Oil Storage
If your facility stores oil above federal threshold quantities (generally 1,320 gallons in aboveground containers or 42,000 gallons underground), a Spill Prevention, Control, and Countermeasure (SPCC) plan is required under federal regulations. The plan must document your oil storage configuration, containment measures, inspection schedules, and spill response procedures.
The SPCC plan must be kept on site and must be the current version. We’ve reviewed facilities where the plan existed but the on-site copy was an earlier version, technically out of compliance despite having done the work.
How to Determine What Applies to Your Facility
The challenge with California’s environmental regulatory landscape is that the programs that apply to your facility depend on specific details: what materials you store, what waste you generate, what operations you run, what permits you hold, and where you’re located. Two facilities in the same industry can have different regulatory profiles based on their size, processes, and geographic jurisdiction.
A gap assessment evaluates your facility against each of these regulatory programs, identifying which ones apply, whether you’re in compliance, and where programs are missing or outdated. The result is a clear picture of your full environmental compliance posture, organized by program, with specific recommendations for each area. Learn more about how the assessment works → | See the programs California facilities get cited for most →
For a self-assessment starting point, use the EHS compliance checklist → to see which programs you can confidently check off and which ones need a closer look.
Next Steps
If you’re not sure which environmental programs apply to your California facility, or you know they apply but aren’t sure your programs are current, a conversation is the right place to start.
Not sure which environmental programs apply to your California facility? Call (925) 551-7300 or request a consultation. Tell us about your operations, and we’ll help you understand which programs apply and what a review would involve.
