Air Pollution Control District (APCD) is a government agency guided by our Governing Board that regulates sources of air pollution within San Diego County.

Our mission is to improve air quality to protect public health and the environment.

The Engineering Division evaluates and issues air quality permits to ensure that proposed new or modified commercial and industrial equipment and operations comply with air pollution control laws. Permits are required for any operation or equipment capable of emitting air contaminants. Engineering also prepares stationary source emission inventories, implements air toxic emissions inventory and control programs, and evaluates special projects that may impact air quality.

The Monitoring & Technical Services Division maintains the ambient air monitoring network and records air quality readings and forecasts on a 24-hour phone message line (858) 586-2800 and on the District's website under Current Air Quality. Agricultural burn permit holders can also find out whether air quality conditions permit or prohibit open burning. Monitoring also performs and witnesses laboratory and field testing of stationary sources of air pollution.

The District's Compliance Division ensures that regulated sources operate in compliance with permit conditions and all applicable regulations. Field staff inspects both permitted and non-permitted sources of air contaminants and investigate citizen complaints on air quality matters. In addition, this division helps industry understand and comply with District rules and state law. Advisories are sent when new rules are adopted to explain the new requirements to all those affected. Formal training and individual assistance are also provided.

The Rule Development Division prepares longterm regional plans to reduce unhealthful pollution levels and develop air quality rules. Specific strategies and control measures are developed and implemented to achieve clean air standards set by the federal and state governments. It also participates with transportation agencies to ensure regional transportation projects are designed to achieve air quality standards.

The Grants & Incentives Division administers a number of state and local funding programs to reduce emissions, primarily from mobile sources. These programs follow strict state guidelines for eligibility, cost-effectiveness and selection and require strict accountability and transparency to ensure proper and effective use of public funds.