Hazardous Materials Programs

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Environmental Health Division

Contact Information

292 West Beamer Street
Woodland, CA 95695

Phone: (530) 666-8646
Fax: (530) 669-1448

Email: Environmental Health


Office Hours

8am-12pm & 1pm-4pm


Yolo County Environmental Health is the Certified Unified Program Agency (CUPA) for Yolo County. The Unified Program is a statewide program overseen by the California Environmental Protection Agency (CalEPA) which delegates the responsibility of applying regulatory standards established by state agencies to local agencies through inspections, permitting, and enforcement activities. The Unified Program encompasses regulatory standards from the Governor’s Office of Emergency Services (Cal OES), the Department of Toxic Substances Control (DTSC), the Office of the State Fire Marshal (OSFM), the State Water Resources Control Board (State Water Board), and CalEPA.

Yolo County Environmental Health may also manage other programs in the Hazardous Materials unit which are not part of the Unified Program. Click the link in the title of each box below for a detailed description of each program managed by the Hazardous Materials unit of Yolo County Environmental Health.

Aboveground Petroleum Storage Act (APSA)

The Aboveground Petroleum Storage Act program regulates facilities that handle aggregate liquid petroleum storage capacity of 1,320-gallons and greater in containers 55-gallons and larger. These facilities are required to write and implement a spill prevention, control, and countermeasure plan (SPCC). The primary purpose of this program is to prevent releases of liquid petroleum into surface waters of the State.


California Accidental Release Prevention (CalARP)

California Accidental Release Prevention program includes the federal Accidental Release Prevention Program. The purpose of the CalARP program is to prevent the accidental releases of regulated substances. Stationary sources with more than a threshold quantity of a regulated substance shall be evaluated to determine the potential for, and impacts of, accidental releases from that covered process.


  California Environmental Reporting System (CERS)

CERS is a statewide web-based system to support CUPAs and Participating Agencies (PAs) in electronically collecting the reporting of hazardous material related data as mandated by Chapter 6.95, Article 1 of the California Health and Safety Code. Reporting of hazardous materials business plans is due annually through CERS for each facility which has reportable quantities of hazardous materials.


Hazardous Materials

Facilities which store hazardous materials above quantities of 500 pounds of a solid, 55 gallons of a liquid, or 200 cubic feet of a gas (with some exceptions) are required to report these by filling out an online hazardous materials business plan (HMBP). The purpose of the HMBP and reporting process is to satisfy community right-to-know requirements, and allow emergency responders to plan ahead for hazardous materials related incidents.


Hazardous Materials Emergency Response

Hazardous Materials Emergency Response is an environmental, safety and health protection by responding to hazardous material emergency incidents in support of the Yolo County Hazmat Response Team and oversight of environmental cleanup after the emergency phase.


Hazardous Waste Generators
Hazardous Waste Generators program helps environmental and public health protection through regulation of facilities that generate and/or recycle hazardous waste. A facility is a hazardous waste generator when the waste generated at that facility is determined to be either a federally listed waste, characteristic waste, used oil or a waste mixed with a known hazardous waste.


Injection of Petroleum Waste

Injection of Petroleum waste fluid in connection with conventional oil or natural gas production can result in harm to the environment and contaminate valuable ground water resources. This program requires that injection well construction, operation and maintenance meets strict guidelines to prevent accidental releases or unauthorized use, while also maintaining close monitoring to ensure that injected waste fluids do not adversely impact the groundwater supply.


On-site Hazardous Waste Treatment
On-site Hazardous Waste Treatment Program protects public health and the environment through regulation of facilities that treat hazardous waste at their facility. Hazardous Waste treatment is any physical or chemical process applied to a waste stream prior to disposal. The process may render the waste non-hazardous, allow the waste to be recycled, reduce the volume of waste to be disposed, or may be required prior to air or water discharge of the waste.


Underground Storage Tank (UST)

USTs are used to store large amounts of hazardous materials such as gasoline, diesel, and waste oil. Storing these hazardous materials underground can be convenient, but also presents unique environmental and safety risks. The purpose of the Underground Storage Tank program is to protect public health and the environment from potential contamination and adverse effects from unintentional releases of hazardous materials from underground storage tanks.


Waste Tire Program

The Waste Tire Program is managed by the California Department of Resources Recycling and Recovery (CalRecycle), with inspection duties assigned to Yolo County Environmental Health. The program outlines requirements for registration of waste tire haulers, manifesting requirements for haulers and generators, and permitting of large waste tire facilities. The program also coordinates cleanups of tire dumps within Yolo County.