Brian Barton
California has long been a pioneer in air quality research, developing the nation's first vehicle emissions standards in 1966. In 1967, California was granted the power to enforce its own vehicle emissions standards under a clean air law enacted by Congress. This unique privilege was granted because California had already begun regulating emissions before the law was passed. The state's severe air pollution problems are due to a combination of enclosed topography, a rapidly growing population, and a warm climate in the Los Angeles air basin. California's efforts to improve air quality have been met with resistance, particularly during the Trump administration, which revoked the state's authority to set its own standards in 2019. However, in 2022, the Biden administration reinstated California's ability to impose stricter auto pollution limits. Despite this, California officials continue to face challenges in their efforts to clean up the state's air quality and reduce greenhouse gas emissions.
| Characteristics | Values |
|---|---|
| Date California received the power to limit pollution | 1967 |
| Agency responsible for granting the power | Congress |
| Act under which the power was granted | Clean Air Act |
| Reasons for granting the power | California's unique air pollution problems, including severe smog and soot |
| Subsequent developments | California's power to limit pollution has been revoked and reinstated multiple times, most recently by the Biden administration in 2022 |
| Challenges | Legal challenges from the oil industry, other fuel producers, and other states; pushback from the public, industry, and some legislators due to economic concerns |
| Impact | California has been able to improve its air quality over the past half-century, but it still faces challenges such as congested freeways and high emissions from the transportation sector |
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What You'll Learn
California's air pollution problems
California has long struggled with severe air pollution problems, which have made it a pioneer in air quality research and regulation. The state's unique geographical features, economic activities, and high population have all contributed to its poor air quality.
One of the primary sources of California's air pollution is the transportation industry, which accounts for about 40% of the state's atmospheric pollution. The state, particularly Los Angeles, has a high concentration of vehicles, with more than one car for every two people. This, combined with Los Angeles' geographical constraints and sprawling layout, has resulted in severe and declining air quality. California is also home to the Port of Los Angeles, one of the largest and busiest container ports in the Western Hemisphere, as well as 12 airports with major cargo operations. These commercial activities account for nearly a third of the state's economy but are responsible for half of its air pollution.
Natural disasters, such as wildfires, have also contributed to California's air pollution by releasing hazardous fine particles into the air. The particles in smoke, known as PM 2.5, are small enough to enter the bloodstream and cause various health issues, including breathing problems, asthma attacks, COPD exacerbations, and even lung cancer.
The state's efforts to address air pollution date back to the 1950s when scientists recognized the unique combination of enclosed topography, a rapidly growing population, and a warm climate in the Los Angeles air basin was causing dangerous smog. In 1961, California's Motor Vehicle Pollution Control Board issued regulations mandating the use of the nation's first vehicle emissions control technology. In 1967, Governor Ronald Reagan signed legislation establishing the California Air Resources Board (CARB) to tackle the state's air pollution. This was followed by the passage of the Clean Air Act, which gave California the power to enforce stricter vehicle emissions standards due to its history of regulating emissions before the law's passage.
California has continued to be a leader in air quality regulation, with the passage of the AB 32 Global Warming Solutions Act in 2006, which mandated a sharp reduction in greenhouse gas emissions. The state's Advanced Clean Cars program, approved in 2013, includes standards to reduce conventional air pollutants like carbon monoxide, nitrogen oxides, and particulate matter. However, California's progress has faced setbacks, such as the Trump administration's decision to revoke the state's ability to set more ambitious emissions standards than the federal government. Despite these challenges, California remains committed to improving its air quality and has seen some improvements over the past half-century.
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The Clean Air Act
The Act also includes the National Emissions Standards for Hazardous Air Pollutants program, which sets standards for emissions of hazardous pollutants from specific sources. Section 112 of the Clean Air Act specifically addresses emissions of hazardous air pollutants and requires the EPA to establish emission standards for "major sources," which are defined as sources emitting or having the potential to emit 10 tons or more of a hazardous air pollutant per year.
California has been a pioneer in air quality research due to its severe air pollution problems. In recognition of its efforts to address air pollution before the passage of the Clean Air Act, Congress granted California the unique privilege to enforce its own tougher standards for vehicle emissions in 1967. This has allowed California to markedly improve its air quality over the past five decades, despite still struggling with some of the nation's worst smog and soot. Other states can adopt California's stricter policies, but they cannot set their own.
California's current waiver to set its own auto emissions standards was approved in 2013 and covers the state's Advanced Clean Cars program, which includes standards to reduce conventional air pollutants and greenhouse gas emissions. This waiver has been challenged by the Trump administration and is currently under review by the Supreme Court, which will examine the standing of fuel companies to sue over a lower court ruling.
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California's vehicle emissions standards
In 1966, California developed the country's inaugural vehicle emissions standards, which the Environmental Protection Agency (EPA) swiftly adopted for 1968 model year cars. This early action by California was pivotal because, when the Clean Air Act was passed in 1967, it included a provision that allowed states with emissions standards before March 1966 to seek a waiver for "compelling and extraordinary conditions." This waiver, granted by the federal government, gave California the authority to set its own vehicle emissions standards, distinct from federal standards.
California's emissions standards have evolved over time, with the state pioneering various initiatives. For instance, the Advanced Clean Cars program, which combines regulations for smog-producing pollutants and greenhouse gases, was first adopted in 2012. This program was later expanded with the Advanced Clean Cars II regulations in 2022, which aim for 100% zero-emission vehicles by model years 2026-2035. Additionally, California's Low-Emission Vehicle (LEV) regulations, first adopted in 1990, established stringent criteria for pollutant exhaust regulations, requiring automobile manufacturers to introduce progressively cleaner vehicles.
The state's ability to set its own standards has been a subject of legal debate. While California's efforts have significantly improved air quality over the past half-century, the Trump administration attempted to revoke the state's waiver in 2019, arguing that California's standards deviated from nationwide fuel economy standards. However, the Biden administration reinstated the waiver, allowing California to continue setting its own standards and requiring all new cars sold in the state by 2035 to be zero-emission vehicles.
California's leadership in vehicle emissions standards has had a nationwide impact. While the Clean Air Act generally bars states from regulating car emissions to promote uniformity, 17 states and the District of Columbia have opted to follow California's stricter regulations. This highlights California's influence in driving environmental policy forward and addressing the pressing issue of transportation-related greenhouse gas emissions in the United States.
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The EPA's role
California has long been a pioneer in air quality research due to its severe air pollution problems. In 1967, California was granted the power to enforce stricter vehicle emissions standards than those required federally. This was due to the state's unique combination of enclosed topography, a rapidly growing population, and a warm climate, which contributed to dangerous levels of smog.
The Environmental Protection Agency (EPA) has played a significant role in California's efforts to limit pollution. The EPA has the authority to regulate air pollution from motor vehicles under the Clean Air Act. While the law generally bars states from regulating car emissions, California was granted a waiver due to its pre-existing innovative laws and standards addressing air pollution.
The EPA has worked jointly with California and the U.S. Department of Transportation (DOT) to develop standards to limit greenhouse gas (GHG) emissions from cars. These standards aim to improve average fuel efficiency and reduce emissions of air pollutants, including GHGs. The EPA also has the responsibility to ensure that these standards are met through inspections and enforcement actions.
In addition to regulating air pollution, the EPA also plays a crucial role in protecting California's watersheds. The EPA uses regulatory tools to protect environmental quality, conserve water and habitats, and reduce water pollution. They help develop watershed plans, monitor streams, and ensure compliance with the Clean Water Act. The EPA also provides financial and technical assistance to California to monitor water quality, identify pollution problems, and develop pollution control plans.
While the EPA has historically supported California's efforts to limit pollution, there have been instances of tension. For example, under the Trump administration, the EPA revoked California's ability to set more ambitious vehicle emissions standards than the federal government. This decision was later reinstated by the Biden administration.
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The Biden administration's reinstatement of California's authority
California has long been a pioneer in air quality research, owing to its severe air pollution problems. In 1952, Dutch chemist Arie Jan Haagen-Smit discovered that worsening Los Angeles smog was caused by a combination of geographical and human factors. In response, California's Motor Vehicle Pollution Control Board issued the nation's first vehicle emissions control technology in 1961, and the state developed the country's first vehicle emissions standards in 1966.
In 1967, California was granted the power to enforce its own vehicle emissions standards by the US Congress, which recognised the state's pre-existing efforts to regulate emissions. This unique privilege, known as a waiver, was granted under the Clean Air Act. The Act empowers the Environmental Protection Agency (EPA) to regulate air pollution from motor vehicles, but it also allows California to set its own rules on tailpipe standards, with the federal government's permission.
In 2019, the Trump administration revoked California's waiver, arguing that individual states should not be allowed to set national policy. This decision was criticised by environmental groups, who saw it as a setback in the fight to limit carbon emissions. However, in 2022, the Biden administration reinstated California's waiver, allowing the state to once again impose stricter auto pollution limits.
The Biden administration's decision was praised by California Governor Newsom, who thanked the administration for "righting the reckless wrongs of the Trump administration". Environmental groups also welcomed the move, with Michelle Robinson, director of the Clean Transportation Program at the Union of Concerned Scientists, calling it an "important milestone". The reinstatement of California's waiver is seen as a return to a successful approach that has helped advance clean technologies and reduce air pollution, not just in California but across the United States.
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Frequently asked questions
California first established the nation's first vehicle emissions standards in 1966.
Yes, California's power to limit pollution has been revoked and reinstated several times. The Trump administration revoked California's power to limit pollution in 2019, but it was reinstated by the Biden administration in 2022.
California currently has the power to limit pollution. However, there is ongoing pushback from the public, industry, and political groups.
