Texas Certified Environmental Scientist Practice Exam | 100 Q&A PDF

Texas Certified Environmental Scientist E
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xam Practice Questions And Correct Ans
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wers (Verified Answers) Plus Rationales
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2026|2027 Q&A | Instant Download Pdf b b b b b




1. What is the primary federal law governing water pollution in the
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United States? b




A. Safe Drinking Water Act
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B. Clean Water Actb b



C. Resource Conservation and Recovery Act
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D. Toxic Substances Control Act
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The Clean Water Act (CWA) regulates discharges of pollutants into waters a
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nd sets quality standards for surface waters.
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2. Which agency is primarily responsible for enforcing environmental
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regulations in Texas? b b




A. EPA
B. Texas Commission on Environmental Quality (TCEQ)
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C. Department of Energy b b



D. OSHA

,TCEQ is the state agency responsible for enforcing Texas environmental law
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s and regulations.
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3. Which gas is the primary contributor to the greenhouse effect?
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A. Nitrogen
B. Oxygen
C. Carbon dioxide b



D. Methane

Carbon dioxide is the most abundant greenhouse gas produced by human ac
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tivities like fossil fuel combustion.
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4. What does the acronym RCRA stand for?
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A. Regional Conservation and Recovery Association
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B. Resource Conservation and Recovery Act
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C. Renewable Chemical Research Agreement b b b



D. Radiation Control and Regulation Act
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RCRA governs the disposal of solid and hazardous waste.
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5. What is the main function of a Phase I Environmental Site
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Assessment?

A. Soil sampling
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B. Identify potential or existing environmental contamination liabilities
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C. Groundwater modeling b



D. Air quality testing
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Phase I ESAs assess the potential for contamination before property transac
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tions.

6. Which of the following is considered a hazardous air pollutant under t
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he Clean Air Act?
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, A. Carbon monoxide b



B. Carbon dioxide b



C. Benzene
D. Water vapor b




Benzene is one of the 187 hazardous air pollutants listed under the Clean Air
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Act.

7. A brownfield is best described as:
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A. Agricultural land b



B. Previously used industrial or commercial land with potential
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contamination
C. Protected wildlife habitat b b



D. Land designated for residential development
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Brownfields are properties where redevelopment may be complicated by en
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vironmental contamination. b




8. The National Environmental Policy Act (NEPA) requires which of the f
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ollowing?

A. Carbon offsetting b



B. Mandatory recycling b



C. Environmental impact statements for major federal actions
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D. Hazardous waste cleanup b b




NEPA mandates that federal agencies assess the environmental effects of thei
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r proposed actions.
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9. Which federal law focuses on chemical safety and reporting?
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A. Clean Water Act
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B. Toxic Substances Control Act (TSCA)
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