UCLA-LAW-240 ENVIRONMENTAL LAW EXAM GUIDE
2026/2027 Q&A
1. Which federal statute requires federal agencies to prepare a detailed
statement examining environmental impacts before undertaking
major federal actions significantly affecting the environment?
A. Clean Air Act
B. National Environmental Policy Act (NEPA)
C. Clean Water Act
D. Endangered Species Act
Correct Answer: B
Explanation: NEPA Section 102(2)(C) mandates Environmental
Impact Statements (EIS) for major federal actions significantly
affecting the environment. The Clean Air Act regulates air pollution,
the Clean Water Act governs water pollution, and the Endangered
Species Act protects threatened/endangered species, but none
require the comprehensive environmental review process that NEPA
does.
2. Under the Clean Air Act, what are the six "criteria pollutants" for
which National Ambient Air Quality Standards (NAAQS) must be
established?
A. Carbon dioxide, methane, ozone, particulate matter, lead, sulfur
dioxide
B. Particulate matter, ozone, carbon monoxide, lead, sulfur dioxide,
nitrogen dioxide
C. Volatile organic compounds, nitrogen oxides, particulate matter,
ozone, lead, ammonia
D. Sulfur dioxide, nitrogen dioxide, carbon monoxide, greenhouse
gases, ozone, lead
Correct Answer: B
Explanation: The six criteria pollutants designated by the EPA
under the Clean Air Act are particulate matter (PM), ozone (O₃),
carbon monoxide (CO), lead (Pb), sulfur dioxide (SO₂), and nitrogen
, dioxide (NO₂). Carbon dioxide and methane are not criteria
pollutants, and greenhouse gases are regulated separately.
3. In Massachusetts v. EPA (2007), the Supreme Court held that:
A. The EPA has no authority to regulate greenhouse gases under the
Clean Air Act
B. Greenhouse gases are "air pollutants" under the Clean Air Act and
the EPA must regulate them if they endanger public health or welfare
C. States lack standing to challenge EPA's refusal to regulate
greenhouse gases
D. The Clean Air Act applies only to traditional air pollutants, not
greenhouse gases
Correct Answer: B
Explanation: Massachusetts v. EPA established that greenhouse
gases qualify as "air pollutants" under the Clean Air Act's broad
definition, and the EPA must regulate them if they endanger public
health or welfare. The Court also found that states had standing to
bring the suit.
4. Which provision of the Clean Water Act establishes the permit
program for discharges of pollutants into waters of the United States?
A. Section 404
B. Section 402 (NPDES)
C. Section 303
D. Section 319
Correct Answer: B
Explanation: Section 402 of the Clean Water Act establishes the
National Pollutant Discharge Elimination System (NPDES) permit
program for point source discharges. Section 404 regulates dredge
and fill material, Section 303 deals with water quality standards,
and Section 319 addresses nonpoint source pollution.
,5. Under CERCLA (Superfund), which of the following is NOT one of the
four classes of Potentially Responsible Parties (PRPs)?
A. Current owners and operators of contaminated facilities
B. Past owners and operators at the time of disposal
C. Generators of hazardous substances disposed at the facility
D. Local governments within 50 miles of the contaminated site
Correct Answer: D
Explanation: CERCLA identifies four classes of PRPs: (1) current
owners/operators, (2) past owners/operators at time of disposal,
(3) generators who arranged for disposal, and (4) transporters who
selected the disposal site. Local governments are not automatically
PRPs merely based on proximity.
6. What is the primary legal standard for determining whether a species
qualifies for listing under the Endangered Species Act?
A. Economic impact of listing on affected industries
B. The best scientific and commercial data available regarding threat
to the species' survival
C. Public opinion and political considerations
D. The species' commercial value and harvesting potential
Correct Answer: B
Explanation: The ESA requires listing decisions based solely on the
best scientific and commercial data available regarding threats to
the species' survival, without consideration of economic impacts.
Economic factors may be considered only during critical habitat
designation and recovery planning.
7. Which of the following best describes the "nondegradation" principle
in environmental law?
A. Environmental quality must always improve with each new
regulation
B. Existing clean air and water quality must be maintained and not
degraded
C. Development can proceed as long as environmental impacts are
, mitigated
D. Pollution levels can increase if economic benefits outweigh
environmental costs
Correct Answer: B
Explanation: The nondegradation principle, particularly prominent
in state water quality laws and the Clean Air Act's Prevention of
Significant Deterioration (PSD) program, requires that existing
clean air and water quality be maintained and not degraded, even if
standards are currently met.
8. Under RCRA, what is the "cradle-to-grave" system?
A. A program for managing radioactive waste from creation to final
disposal
B. A tracking system for hazardous waste from generation to final
disposal
C. A lifecycle assessment requirement for all consumer products
D. A burial protocol for contaminated burial sites
Correct Answer: B
Explanation: RCRA's cradle-to-grave system tracks hazardous
waste from the moment it is generated ("cradle") through
transportation and treatment/storage/disposal ("grave"), requiring
manifest documentation at each transfer point to ensure proper
handling.
9. What is the key difference between an Environmental Assessment
(EA) and an Environmental Impact Statement (EIS) under NEPA?
A. An EA is required for all federal actions; an EIS is optional
B. An EA is a preliminary analysis to determine if an EIS is needed;
an EIS is a comprehensive study
C. An EA applies to state actions; an EIS applies to federal actions
D. An EA is legally binding; an EIS is advisory only
Correct Answer: B
Explanation: An EA is a concise document that determines whether
a federal action will significantly affect the environment. If
2026/2027 Q&A
1. Which federal statute requires federal agencies to prepare a detailed
statement examining environmental impacts before undertaking
major federal actions significantly affecting the environment?
A. Clean Air Act
B. National Environmental Policy Act (NEPA)
C. Clean Water Act
D. Endangered Species Act
Correct Answer: B
Explanation: NEPA Section 102(2)(C) mandates Environmental
Impact Statements (EIS) for major federal actions significantly
affecting the environment. The Clean Air Act regulates air pollution,
the Clean Water Act governs water pollution, and the Endangered
Species Act protects threatened/endangered species, but none
require the comprehensive environmental review process that NEPA
does.
2. Under the Clean Air Act, what are the six "criteria pollutants" for
which National Ambient Air Quality Standards (NAAQS) must be
established?
A. Carbon dioxide, methane, ozone, particulate matter, lead, sulfur
dioxide
B. Particulate matter, ozone, carbon monoxide, lead, sulfur dioxide,
nitrogen dioxide
C. Volatile organic compounds, nitrogen oxides, particulate matter,
ozone, lead, ammonia
D. Sulfur dioxide, nitrogen dioxide, carbon monoxide, greenhouse
gases, ozone, lead
Correct Answer: B
Explanation: The six criteria pollutants designated by the EPA
under the Clean Air Act are particulate matter (PM), ozone (O₃),
carbon monoxide (CO), lead (Pb), sulfur dioxide (SO₂), and nitrogen
, dioxide (NO₂). Carbon dioxide and methane are not criteria
pollutants, and greenhouse gases are regulated separately.
3. In Massachusetts v. EPA (2007), the Supreme Court held that:
A. The EPA has no authority to regulate greenhouse gases under the
Clean Air Act
B. Greenhouse gases are "air pollutants" under the Clean Air Act and
the EPA must regulate them if they endanger public health or welfare
C. States lack standing to challenge EPA's refusal to regulate
greenhouse gases
D. The Clean Air Act applies only to traditional air pollutants, not
greenhouse gases
Correct Answer: B
Explanation: Massachusetts v. EPA established that greenhouse
gases qualify as "air pollutants" under the Clean Air Act's broad
definition, and the EPA must regulate them if they endanger public
health or welfare. The Court also found that states had standing to
bring the suit.
4. Which provision of the Clean Water Act establishes the permit
program for discharges of pollutants into waters of the United States?
A. Section 404
B. Section 402 (NPDES)
C. Section 303
D. Section 319
Correct Answer: B
Explanation: Section 402 of the Clean Water Act establishes the
National Pollutant Discharge Elimination System (NPDES) permit
program for point source discharges. Section 404 regulates dredge
and fill material, Section 303 deals with water quality standards,
and Section 319 addresses nonpoint source pollution.
,5. Under CERCLA (Superfund), which of the following is NOT one of the
four classes of Potentially Responsible Parties (PRPs)?
A. Current owners and operators of contaminated facilities
B. Past owners and operators at the time of disposal
C. Generators of hazardous substances disposed at the facility
D. Local governments within 50 miles of the contaminated site
Correct Answer: D
Explanation: CERCLA identifies four classes of PRPs: (1) current
owners/operators, (2) past owners/operators at time of disposal,
(3) generators who arranged for disposal, and (4) transporters who
selected the disposal site. Local governments are not automatically
PRPs merely based on proximity.
6. What is the primary legal standard for determining whether a species
qualifies for listing under the Endangered Species Act?
A. Economic impact of listing on affected industries
B. The best scientific and commercial data available regarding threat
to the species' survival
C. Public opinion and political considerations
D. The species' commercial value and harvesting potential
Correct Answer: B
Explanation: The ESA requires listing decisions based solely on the
best scientific and commercial data available regarding threats to
the species' survival, without consideration of economic impacts.
Economic factors may be considered only during critical habitat
designation and recovery planning.
7. Which of the following best describes the "nondegradation" principle
in environmental law?
A. Environmental quality must always improve with each new
regulation
B. Existing clean air and water quality must be maintained and not
degraded
C. Development can proceed as long as environmental impacts are
, mitigated
D. Pollution levels can increase if economic benefits outweigh
environmental costs
Correct Answer: B
Explanation: The nondegradation principle, particularly prominent
in state water quality laws and the Clean Air Act's Prevention of
Significant Deterioration (PSD) program, requires that existing
clean air and water quality be maintained and not degraded, even if
standards are currently met.
8. Under RCRA, what is the "cradle-to-grave" system?
A. A program for managing radioactive waste from creation to final
disposal
B. A tracking system for hazardous waste from generation to final
disposal
C. A lifecycle assessment requirement for all consumer products
D. A burial protocol for contaminated burial sites
Correct Answer: B
Explanation: RCRA's cradle-to-grave system tracks hazardous
waste from the moment it is generated ("cradle") through
transportation and treatment/storage/disposal ("grave"), requiring
manifest documentation at each transfer point to ensure proper
handling.
9. What is the key difference between an Environmental Assessment
(EA) and an Environmental Impact Statement (EIS) under NEPA?
A. An EA is required for all federal actions; an EIS is optional
B. An EA is a preliminary analysis to determine if an EIS is needed;
an EIS is a comprehensive study
C. An EA applies to state actions; an EIS applies to federal actions
D. An EA is legally binding; an EIS is advisory only
Correct Answer: B
Explanation: An EA is a concise document that determines whether
a federal action will significantly affect the environment. If
