Brian Barton
Environmental crimes, such as those involving asbestos removal, pollution from ships, or the discharge of pollutants into US waters, often require proof of a pollution event and criminal intent. While environmental regulations can induce innovation in clean technologies, they may also impose significant compliance costs on businesses, leading to the temptation to cut corners. The Clean Air Act, for instance, authorizes the EPA to establish national ambient air quality standards and regulate the emission of greenhouse gases from new motor vehicles. However, in Los Angeles County Flood Control Dist. v. NRDC (2013), it was found that the EPA exceeded its authority by treating greenhouse gases as pollutants in certain contexts. The interpretation of environmental laws and the enforcement of standards vary across jurisdictions, with some regions taking more aggressive carbon mitigation actions than others under the Paris Agreement.
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What You'll Learn
The Clean Air Act and the Clean Water Act
The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution across the nation. Initially enacted in 1963, it has been amended many times since and is one of the country's first and most influential modern environmental laws. The Clean Air Act is administered by the U.S. Environmental Protection Agency (EPA) in coordination with state, local, and tribal governments.
The EPA develops extensive administrative regulations to implement the law, including the National Ambient Air Quality Standards (NAAQS) program, which sets standards for concentrations of certain pollutants in outdoor air, and the National Emissions Standards for Hazardous Air Pollutants program, which sets standards for emissions of particular hazardous pollutants from specific sources. Other programs under the Clean Air Act create requirements for vehicle fuels, industrial facilities, and other technologies and activities that impact air quality.
The Clean Water Act (CWA), on the other hand, is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters. The CWA establishes the basic structure for regulating discharges of pollutants into the waters of the United States and sets quality standards for surface waters. The basis of the CWA was enacted in 1948 as the Federal Water Pollution Control Act, but it took its modern form in 1972 with significant amendments.
Under the CWA, the EPA has implemented pollution control programs, such as setting wastewater standards for industries and developing national water quality criteria recommendations for pollutants in surface waters. The CWA introduced the National Pollutant Discharge Elimination System (NPDES), a permit system for regulating point sources of pollution, including industrial facilities, municipal governments, and some agricultural facilities. The CWA made it unlawful to discharge any pollutant from a point source into navigable waters without a permit, and the EPA's NPDES permit program controls these discharges.
Both the Clean Air Act and the Clean Water Act have been instrumental in reducing pollution and improving environmental quality in the United States, with the EPA's efforts credited with saving trillions of dollars and thousands of lives each year.
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Greenhouse gases and air pollutants
Greenhouse gases are gases that trap heat in the Earth's atmosphere, causing the planet to warm. These gases include carbon dioxide, methane, nitrous oxide, fluorinated gases, and water vapour, among others. While greenhouse gases are a natural part of the Earth's atmosphere, human activities have significantly increased their concentrations since the Industrial Revolution, particularly through the combustion of fossil fuels and various industrial processes. This has led to global warming and climate change, recognised as a significant environmental problem by atmospheric scientists.
According to the Environmental Protection Agency (EPA), the Clean Air Act does not permit the EPA Administrator to consider implementation costs when setting National Ambient Air Quality Standards (NAAQS). The Clean Air Act also authorises the EPA to intervene when state authorities permit the construction of major pollutant-emitting facilities, if their determination of the Best Available Control Technology (BACT) is deemed unreasonable.
In the case of Massachusetts v. EPA (2007), the Supreme Court ruled that greenhouse gases fall within the definition of "air pollutant" under the Clean Air Act. This ruling gave the EPA the statutory authority to regulate the emission of greenhouse gases from new motor vehicles. However, in Los Angeles County Flood Control Dist. v. NRDC (2013), the court clarified that the EPA may not treat greenhouse gases as pollutants for defining major emitting facilities in the context of Prevention of Significant Deterioration (PSD) or Title V permitting.
While the EPA has taken steps to address greenhouse gas emissions, the complexity of environmental regulation and compliance costs have presented challenges. Congress enacted laws in the 1970s to protect the nation's air, water, and lands from uncontrolled pollution, recognising the detrimental effects of unregulated industrial development. Despite the success of these environmental regulations in reducing pollution, businesses may still be tempted to cut corners to avoid the costs associated with treatment equipment and disposal fees.
Air pollution, including greenhouse gases, can have varying effects on local air quality due to weather patterns and atmospheric conditions. Prevailing winds can dilute and disperse pollutants horizontally, while atmospheric instability can mix and disperse pollutants vertically. However, stable atmospheric conditions can lead to the accumulation of pollutants near the ground, resulting in acute episodes of air pollution. Additionally, air pollutants that increase aerosols can contribute to cloud formation, influencing the climate through their cooling or warming effects.
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Regulation of emissions from vehicles
In the United States, the Environmental Protection Agency (EPA), the National Highway Traffic Safety Administration (NHTSA), and the California Air Resources Board (CARB) are responsible for setting federal and state vehicle emissions and fuel economy standards. The transportation sector is the largest source of U.S. greenhouse gas emissions, with cars and light-duty trucks responsible for 57.5% of transportation emissions.
To address this issue, the EPA and NHTSA are taking coordinated steps to enable the production of a new generation of clean vehicles through reduced greenhouse gas emissions and improved fuel use from on-road vehicles. The EPA's final rule, issued in December 2021, sets greenhouse gas emissions standards for passenger cars and light trucks through model year 2026. The rule also reinstates several flexibilities and incentives from previous rules, such as the advanced technology vehicle multiplier credits, which give more weight to zero- and near-zero-emission vehicles in meeting standards.
In March 2024, the EPA announced new, more protective final standards to further reduce harmful air pollutant emissions from light-duty and medium-duty vehicles starting with model year 2027. These standards build upon the EPA's previous standards for model years 2023 through 2026 and aim to improve public health, reduce climate pollution, and save drivers money through reduced fuel and maintenance costs.
The Clean Air Act also plays a significant role in regulating vehicle emissions. It grants the EPA the authority to regulate the emission of greenhouse gases, which are considered air pollutants under the Act, from new motor vehicles. Additionally, the Act authorizes the EPA to stop the construction of major pollutant-emitting facilities when it finds that a state authority's determination of best available control technology (BACT) was unreasonable.
While these regulations aim to reduce vehicle emissions and protect the environment, it is important to note that environmental crimes, such as those involving the discharge of pollutants, often require proof of both the pollution event and criminal intent.
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Pollution prevention equipment
While the Clean Air Act does not require the EPA to interpret the term "modification" consistently in its Prevention of Significant Deterioration (PSD) regulations and New Source Performance Standards (NSPS) regulations, the EPA is authorized to stop the construction of a major pollutant-emitting facility if it finds that the BACT (best available control technology) determination was unreasonable. This means that while there may be some wiggle room in terms of what constitutes "polluting," the EPA has the authority to step in and prevent the construction of facilities that have the potential to cause significant environmental harm.
Other types of pollution prevention equipment include thermal and catalytic oxidation technologies, which help comply with VOC, HAP, and odor regulations. Mist collectors are another example of air pollution control equipment, and they are particularly useful in CNC machining, metalworking operations, and plastic processing. However, they may struggle with high-viscosity or sticky mists, requiring specialized filter coatings or pre-filtration stages. Regular maintenance is crucial for mist collectors to prevent pressure drops and performance issues.
The Global Integrated Shipping Information System (GISIS) provides a publicly accessible module with a list of approved pollution prevention equipment for ships. This ensures that ships are equipped with the necessary tools to prevent the illegal discharge of pollutants into the sea, as seen in the case of the M/T Bow Lind, where the vessel discharged oily bilge water directly into the sea while in international waters.
In summary, pollution prevention equipment is essential to ensure compliance with environmental regulations and to mitigate the impact of industrial activities on the air, water, and land. While there may be some legal flexibility in the interpretation of "pollution," the EPA and other regulatory bodies have the authority to intervene and prevent environmental harm.
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Water quality standards
In the United States, the Environmental Protection Agency (EPA) plays a pivotal role in approving or disapproving water quality standards. While states like Minnesota, Washington, and Colorado have their own specific regulations and agencies, they work in conjunction with the EPA to establish and enforce these standards. For instance, Minnesota's water quality standards are outlined in the Minnesota Rules chapters 7050 and 7052, with the Minnesota Pollution Control Agency (MPCA) continuously working to improve them.
Narrative standards, on the other hand, address fundamental forms of water pollution, such as floating solids, scums, visible oil films, or nuisance algae blooms. They also set water quality goals in connection with specific pollutants, such as eutrophication, and pollutants that accumulate in fish, posing risks to both human and wildlife consumers. Antidegradation protections provide extra safeguards for high-quality or unique water sources, ensuring that their existing uses are preserved.
Additionally, water quality standards may include temporary measures such as discharger-specific variances (DSVs), which authorise alternative effluent limits (AELs) when compliance with standard effluent limits is not feasible. These temporary standards aim to protect ambient water quality while allowing for necessary adjustments. Overall, water quality standards serve as a comprehensive framework to protect and preserve water resources, guiding the actions of municipalities, industries, and other entities that impact water quality.
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Frequently asked questions
The Clean Air Act authorizes the EPA to establish national ambient air quality standards. Each state must devise regulations, known as state implementation plans, to meet the NAAQS.
The Clean Water Act does not allow the extension of the jurisdiction of the Army Corps of Engineers to wetlands that are not adjacent to open water. Under this act, pollutants may not be discharged from a point source into navigable waters without a permit.
CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act) provides potentially responsible parties with a cause of action to recover costs from other potentially responsible parties.
The burden of proof in most environmental crimes is to prove a pollution event and criminal intent. The government must show that the defendant acted "knowingly" through voluntary and intentional conduct. The standard of proof in civil cases is "clear and convincing evidence", while in criminal cases, it is "beyond a reasonable doubt".
