This section of the law states that the definitions in this chapter should be used to understand this division, unless the state board creates new rules under Section 39601 that change these definitions.

This law defines 'acid deposition' as the process where acid chemicals from the atmosphere settle onto surfaces, either through rain (wet) or other forms (dry).

The term "acid deposition precursor" refers to a type of air pollutant that can change into an acidic gas or particle when it's in the atmosphere.

This California law defines "agricultural burning" as outdoor fires used for certain purposes. It includes fires for growing crops, raising animals, managing forests, improving land for wildlife, and preventing disease and pests. It also covers maintaining water delivery systems and managing wildland vegetation through controlled burns.

Wildland vegetation management burning is described as planned fires conducted by or involving a public agency to manage areas with chaparral, grass, or trees. These burns aim to prevent intense wildfires, manage watersheds, improve ranges and forests, manage vegetation, enhance wildlife habitats, and maintain air quality. Such controlled fires can start naturally or accidentally.

This law defines what an 'agricultural source of air pollution' is, focusing on facilities used for farming activities like raising animals or growing crops. It includes confined animal facilities, specific engines used in farming, and any regulated sources under air quality rules. The law states that any air district rules for stationary farms set before 2004 apply to these agricultural sources.

It also clarifies that districts can control these pollution sources under local or federal laws. However, a district might exempt an agricultural source if it emits low enough levels of certain pollutants—less than one ton per year—based on a public hearing.

An "air basin" is a specific region in the state identified by the state board according to certain criteria.

This section defines what counts as an 'air contaminant' or 'air pollutant'. It covers anything released into the air like smoke, dust, fumes, gases, and odors, among other things. Basically, it's talking about anything that can dirty the air.

The term “ambient air quality standards” refers to the specific levels and exposure times of air pollution that are set to indicate when air pollution could cause negative health or environmental effects. These standards are set by either the state board or the federal government.

The term "Antelope Valley district board" refers to the group responsible for overseeing the operations of the Antelope Valley Air Quality Management District.

The term “Bay district” refers to the Bay Area Air Quality Management District, which operates under certain legal provisions starting at Section 40200.

The 'bay district board' is simply the group of people who manage and make decisions for the bay district.

This section defines the term "Bureau" as the Bureau of Automotive Repair in the Department of Consumer Affairs.

This section refers to the definition of a "bus" found in another part of the Vehicle Code, specifically Section 233.

This law section defines "certification" as the state's approval declaring that a motor vehicle, its engine, or pollution control device meets set state standards for controlling specific air pollutants.

The term "certified device" refers to a pollution control gadget for vehicles that has received certification. This includes gadgets that were previously approved or accredited by the state board or the Motor Vehicle Pollution Control Board. The terms "accredited" or "approved" can still be used for devices that were labeled as such in the past.

This section simply states that the term “cogeneration technology” should be understood as it is explained in Section 25134 of the Public Resources Code.

This law section clarifies that for a project to be considered a 'cogeneration technology project,' it must involve modifications to existing equipment. If the equipment owned or operated by the applicant or host industry is not modified, it won't count as part of the cogeneration technology project.

This section defines 'combustible or flammable solid waste' as any type of solid refuse material that can easily catch fire or burn. Examples include garbage, paper, or even animal carcasses.

This law section states that the definition of a 'commercial vehicle' is the same as provided in Section 260 of the Vehicle Code.

This law defines "components of emissions control systems" as the parts listed in a document by the state board, specifically the "Emissions Warranty Parts List" from December 14, 1978, which is mentioned in a section of California's administrative regulations.

This section defines 'county district' as a district that remains active according to the rules starting in Section 40100, Part 3 of Chapter 2.

The term 'county district board' refers to the group of people responsible for overseeing and making decisions for a county district.

In this section, 'fugitive emissions' are defined as emissions that cannot go through a usual outlet like a stack or vent. The state board is not allowed to change this definition under this specific section.

This section defines 'crankcase emissions' as substances that escape directly into the air from a motor vehicle engine's crankcase. It clarifies that gases routed through the engine intake or exhaust systems are not considered crankcase emissions; instead, they are termed exhaust emissions.

This law section specifies that when the term “Department” is used, it refers to the Department of Consumer Affairs.

This law defines a 'direct import vehicle' as a light-duty car made outside the U.S. that was not meant to be sold here and hasn't been certified by the state's board as meeting California emissions standards.

This section defines the term "District" as either an air pollution control district or an air quality management district that is established or maintained under specific legal provisions.

This law section defines 'district board' as the group of people who make decisions for a district.

This section defines an 'elderly low-income person' as someone who is over 62 years old and lives in a household where the total income of all members was less than $7,500 last year.

The term "emission standards" refers to set limits on the amount of air pollutants that can be released into the air.

This section defines several terms related to vehicle diagnostics and emissions. "Bidirectional control" allows a diagnostic tool to temporarily manage a vehicle's components without making permanent changes. "Covered person" includes individuals or businesses repairing vehicles who are licensed with the Bureau of Automotive Repair or make emissions-related vehicle parts. "Data stream information" refers to information from a vehicle's systems shared with diagnostic tools or other vehicle modules, excluding engine calibration details. "Emissions-related motor vehicle information" involves systems or parts impacting vehicle emissions, such as the fuel and transmission systems. "Emissions-related motor vehicle part" includes any part that could affect vehicle emissions. "Enhanced data stream information" and "enhanced diagnostic tool" are specific to a vehicle manufacturer's brand tools or data.

The law defines an "emissions retrofit device" as a type of exhaust device that has been certified or approved to convert modified vehicles into low-emission vehicles.

This part of the law will become inactive five years from a specific date outlined in a related act, and will be repealed the following January 1 after that date.

An 'exhaust device' refers to a part of a car or truck designed to lower the pollution coming out of the tailpipe.

This section defines 'exhaust emissions' as any substances released into the air from areas beyond the exhaust port of a vehicle's engine.

This section defines the term "flue" as any duct or pathway, like a chimney or stack, that allows air or gases to pass through.

This section defines 'fuel evaporative loss emissions' as the vaporized fuel that escapes into the air from a vehicle's fuel system.

This law defines a "fuel system" as the entire setup in a vehicle that includes the fuel tank, fuel lines, and either a carburetor or a fuel injector. It also covers any vents and systems or devices that control fuel vapor emissions.

The term "gross polluter" refers to a vehicle that emits too much hydrocarbon, carbon monoxide, or nitrogen oxides, according to standards set by a specific department working with the state board.

This law defines a "heavy-duty" vehicle as one that has a manufacturer's maximum weight rating of at least 6,001 pounds.

This section states that the term "implement of husbandry" should be understood as it is defined in the Vehicle Code, specifically starting from Section 36000.

The term "light-duty" refers to vehicles that the manufacturer states can weigh up to 6,000 pounds when fully loaded.

This section defines the term “local or regional authority” as the group in charge of running a city, county, or district.

This section defines a 'marine vessel' as any type of boat or ship such as tugboats, tankers, freighters, passenger ships, or barges. However, it specifically excludes boats mainly used for recreational purposes.

A 'low-emission motor vehicle' in California is defined as a vehicle certified by the state board to meet emission standards. It must also fulfill one of the following conditions: it can run on methanol with no greater impact on air quality than a certain benchmark vehicle, run on a different fuel than gasoline or diesel with similar air quality impact as methanol, or use gasoline exclusively but meet stricter hydrocarbon emission standards.

This law explains what 'model year' means for vehicles. If a manufacturer has a yearly production schedule, 'model year' includes January 1 of that year. If not, it simply means the calendar year. For vehicles made in multiple stages, the model year is determined by when the chassis is finished.

This law defines the term “Mojave Desert district board” as the governing board of the Mojave Desert district.

This section indicates that the term 'motor vehicle' should be understood according to its definition in another law, specifically Section 415 of the Vehicle Code.

This law defines what a 'motor vehicle pollution control device' is. It's any equipment or modification to a vehicle's engine intended to reduce pollutants released into the air by the vehicle.

This law states that the definition of a "Motorcycle" is the same as the definition provided in Section 400 of the Vehicle Code. So, to understand what a motorcycle is legally defined as, you would need to look at that specific section of the Vehicle Code.

This law defines a "new motor vehicle" as one that has not had its ownership, either equitable or legal, transferred to a final buyer.

This section defines what is meant by a 'new motor vehicle engine'. It simply means an engine that is new and installed in a motor vehicle.

This section defines 'nonvehicular sources' as any source of air pollution that is not related to the operation of vehicles. It includes activities like loading fuels into vehicles.

This section defines an "obscurant" as the fog oil used in military exercises to create smoke screens. The purpose of these smoke screens is to prevent detection of people or objects by sight or electronic observation in a specific area.

An "open outdoor fire" is any kind of burning of materials outside, not contained within an enclosure, where the smoke isn't funneled through a chimney or pipe.

This law defines what an "orchard or citrus grove heater" is. It's any device or machine that burns fuel to produce heat, used to protect orchards or citrus groves from frost damage by emitting air contaminants.

A "passenger vehicle" is defined in the same way as in a specific part of the Vehicle Code.

This section defines what a "person" means under the law. It includes individuals as defined by a different section, state and local government agencies and their employees, and the United States government, but government agencies and their employees are not criminally liable for actions taken while doing their jobs.

This section defines "PM2.5" as tiny particles that are 2.5 microns or smaller in size.

This law defines a 'qualifying facility' as a specific type of small power production facility that meets the criteria outlined in Section 228.5 of the Public Utilities Code. Essentially, it's a facility designed to generate electricity that complies with certain regulations to be considered 'qualifying.'

This law defines a 'racing vehicle' as a type of competition vehicle that is not driven on public roads.

This section of the law defines a 'regional district' as a district that is established under Chapter 5 of Part 3, starting with Section 40300.

This section defines a 'regional district board' as the group of people who are in charge of making decisions for a regional district.

This law defines a 'resource recovery project' as any initiative that transforms different types of waste—like city garbage, farm waste, forest waste, or gases from landfills and digesters—into energy where the waste is originally found.

This section defines the "Sacramento district" as the Sacramento Metropolitan Air Quality Management District, which is established under Chapter 10, starting at Section 40950, of Part 3.

This law section defines the term “Sacramento district board” as the group of people who govern the Sacramento district.

This section defines a "Schedule of increments of progress" as a timeline detailing specific dates when steps must be taken to ensure a source of air pollution meets emission standards. The schedule should include key dates like when the final plan is submitted, contracts awarded, construction starts and finishes, compliance achieved, and any other steps needed for effective supervision.

This law defines a 'schoolbus' as a large vehicle specifically made to transport students to and from educational places or events.

This law defines the term “smog index” as a number given to vehicles by the state to show how much they affect ozone levels in areas that don't meet air quality standards. It also states that this section will stop being operational five years after a specific date and will be officially repealed on the January 1 following that time.

The term "solid waste dump" refers to any gathered pile of solid waste meant to be thrown away or disposed of.

This section defines the “South coast district” as the South Coast Air Quality Management District, which is established under another part of California law starting with Section 40400.

This law section defines the term “State board” as the State Air Resources Board.

This section defines "Title V" specifically as it refers to Title V of the federal Clean Air Act.

A "Title V source" refers to any stationary source of pollution that must have an operating permit under Title V of the federal Clean Air Act. This requirement is set by federal law and includes specific sites regulated under the Act's guidelines and rules.

This section simply defines "truck" by referring to the definition found in Section 410 of the Vehicle Code.

This section of the law states that the term "truck tractor" should be understood in the same way as it is described in another section of the law, specifically Section 655 of the Vehicle Code.

The term "ultimate purchaser" refers to the first person who buys a new motor vehicle or engine with the intention of using it themselves, not for selling it to someone else.

This section defines what a "unified district" is, stating that it's a district established or maintained under specific regulations starting in Section 40150 of Part 3.

This law section defines a "unified district board" as the group of people responsible for running a unified district.

A "used motor vehicle" is defined as any vehicle that is not considered new.

This law section states that the term “Vehicle” is defined the same way as it is in Section 670 of the Vehicle Code. Essentially, it refers to the definition of a vehicle you would find there.

This section defines "vehicular sources" as any air pollutants that come from motor vehicles.