Texas Municipal Solid Waste Supervisor – Class A Exam|
Questions & Answers & Rationale | 2025/2026 | Latest
Update | Instant Download !!
1. Which agency is primarily responsible for regulating Municipal Solid Waste (MSW) in Texas?
A. EPA Region 6
B. Texas Commission on Environmental Quality (TCEQ) (correct answer)
C. Texas Department of State Health Services
D. Texas Water Development Board
Rationale: TCEQ is the primary state agency overseeing MSW, permitting, compliance, and enforcement.
2. A Type I landfill must meet which of the following minimum requirements before accepting waste?
A. Only a fence and gate
B. A liner system and leachate collection system
C. A permitted design approved by TCEQ including liner, leachate collection, groundwater
monitoring, and access controls (correct answer)
D. A host community agreement only
Rationale: Type I facilities must meet the highest regulatory requirements including engineered controls.
3. The term “putrescible waste” refers to materials that:
A. Are recyclable
B. Are hazardous
C. Rapidly decompose, generate odors, and can attract pests (correct answer)
D. Are inert
Rationale: Putrescible waste is organic matter that decomposes quickly, requiring careful management.
,4. Daily cover at a Type I landfill must be applied at least:
A. Once per week
B. At the end of each operating day (correct answer)
C. Every other day
D. Only when odors appear
Rationale: Texas regulations require daily cover to control odors, vectors, windblown waste, and fires.
5. Scenario: A landfill operator observes leachate seeping through an exterior slope. What is the
correct action?
A. Ignore it until the next monthly inspection
B. Divert customers to another working face
C. Report the incident to the supervisor and initiate corrective action immediately (correct answer)
D. Spray deodorizer to mask the smell
Rationale: Leachate seeps must be addressed quickly due to groundwater protection requirements.
6. Which of the following is considered Class 1 industrial waste?
A. Aluminum cans
B. Clean concrete
C. Sludge from an industrial wastewater treatment process with hazardous characteristics (correct
answer)
D. Brush and yard waste
Rationale: Class 1 industrial waste is nonhazardous but poses potential risks and requires special handling.
7. The primary purpose of landfill gas (LFG) monitoring systems is to:
A. Measure dust levels
B. Prevent off-site migration of explosive gases such as methane (correct answer)
C. Monitor rainfall
D. Assess traffic volumes
,Rationale: Methane can migrate and create explosion hazards; monitoring ensures compliance with TCEQ
rules.
8. A landfill working face should be kept as small as practical to:
A. Increase traffic efficiency
B. Reduce vectors, windblown litter, odors, and improve safety (correct answer)
C. Allow more trucks at once
D. Minimize equipment use
Rationale: A small working face minimizes operational impacts and improves control.
9. Groundwater monitoring wells at MSW facilities must be sampled:
A. Monthly
B. Quarterly
C. Semiannually or as specified in the site permit (correct answer)
D. Annually
Rationale: TCEQ typically requires semiannual sampling unless permit conditions specify otherwise.
10. What must be done before constructing a new landfill cell?
A. Conduct an open house
B. Notify TCEQ and obtain authorization per the permit and construction quality assurance plan
(CQA) (correct answer)
C. Begin excavation immediately
D. Test-run leachate pumps
Rationale: Construction must follow the approved design and CQA documentation process.
11. What is the maximum allowed slope for landfill final cover to minimize erosion?
, A. 1:1
B. 3:1 (correct answer)
C. 5:1
D. 10:1
Rationale: A 3:1 slope is typically required for stability and erosion control.
12. Which of the following is prohibited waste at most MSW Type I landfills unless specifically
authorized?
A. MSW Class 2 Waste
B. Construction debris
C. Whole used tires (correct answer)
D. Brush
Rationale: Whole tires can trap air, rise, and damage cover systems; they must be cut or shredded.
13. The maximum methane concentration allowed at the facility boundary is:
A. 10%
B. 5%
C. 1.25% by volume in air (correct answer)
D. 0%
Rationale: TCEQ and EPA rules limit methane to 25% of the lower explosive limit (LEL), which is 1.25%.
14. Scenario: A fire starts in the active cell. What is the correct first step?
A. Evacuate the facility immediately
B. Notify the supervisor and begin suppression procedures per the emergency response plan (correct
answer)
C. Increase compaction
D. Continue operations away from the fire
Rationale: Fires require immediate controlled response using the site’s emergency plan.
Questions & Answers & Rationale | 2025/2026 | Latest
Update | Instant Download !!
1. Which agency is primarily responsible for regulating Municipal Solid Waste (MSW) in Texas?
A. EPA Region 6
B. Texas Commission on Environmental Quality (TCEQ) (correct answer)
C. Texas Department of State Health Services
D. Texas Water Development Board
Rationale: TCEQ is the primary state agency overseeing MSW, permitting, compliance, and enforcement.
2. A Type I landfill must meet which of the following minimum requirements before accepting waste?
A. Only a fence and gate
B. A liner system and leachate collection system
C. A permitted design approved by TCEQ including liner, leachate collection, groundwater
monitoring, and access controls (correct answer)
D. A host community agreement only
Rationale: Type I facilities must meet the highest regulatory requirements including engineered controls.
3. The term “putrescible waste” refers to materials that:
A. Are recyclable
B. Are hazardous
C. Rapidly decompose, generate odors, and can attract pests (correct answer)
D. Are inert
Rationale: Putrescible waste is organic matter that decomposes quickly, requiring careful management.
,4. Daily cover at a Type I landfill must be applied at least:
A. Once per week
B. At the end of each operating day (correct answer)
C. Every other day
D. Only when odors appear
Rationale: Texas regulations require daily cover to control odors, vectors, windblown waste, and fires.
5. Scenario: A landfill operator observes leachate seeping through an exterior slope. What is the
correct action?
A. Ignore it until the next monthly inspection
B. Divert customers to another working face
C. Report the incident to the supervisor and initiate corrective action immediately (correct answer)
D. Spray deodorizer to mask the smell
Rationale: Leachate seeps must be addressed quickly due to groundwater protection requirements.
6. Which of the following is considered Class 1 industrial waste?
A. Aluminum cans
B. Clean concrete
C. Sludge from an industrial wastewater treatment process with hazardous characteristics (correct
answer)
D. Brush and yard waste
Rationale: Class 1 industrial waste is nonhazardous but poses potential risks and requires special handling.
7. The primary purpose of landfill gas (LFG) monitoring systems is to:
A. Measure dust levels
B. Prevent off-site migration of explosive gases such as methane (correct answer)
C. Monitor rainfall
D. Assess traffic volumes
,Rationale: Methane can migrate and create explosion hazards; monitoring ensures compliance with TCEQ
rules.
8. A landfill working face should be kept as small as practical to:
A. Increase traffic efficiency
B. Reduce vectors, windblown litter, odors, and improve safety (correct answer)
C. Allow more trucks at once
D. Minimize equipment use
Rationale: A small working face minimizes operational impacts and improves control.
9. Groundwater monitoring wells at MSW facilities must be sampled:
A. Monthly
B. Quarterly
C. Semiannually or as specified in the site permit (correct answer)
D. Annually
Rationale: TCEQ typically requires semiannual sampling unless permit conditions specify otherwise.
10. What must be done before constructing a new landfill cell?
A. Conduct an open house
B. Notify TCEQ and obtain authorization per the permit and construction quality assurance plan
(CQA) (correct answer)
C. Begin excavation immediately
D. Test-run leachate pumps
Rationale: Construction must follow the approved design and CQA documentation process.
11. What is the maximum allowed slope for landfill final cover to minimize erosion?
, A. 1:1
B. 3:1 (correct answer)
C. 5:1
D. 10:1
Rationale: A 3:1 slope is typically required for stability and erosion control.
12. Which of the following is prohibited waste at most MSW Type I landfills unless specifically
authorized?
A. MSW Class 2 Waste
B. Construction debris
C. Whole used tires (correct answer)
D. Brush
Rationale: Whole tires can trap air, rise, and damage cover systems; they must be cut or shredded.
13. The maximum methane concentration allowed at the facility boundary is:
A. 10%
B. 5%
C. 1.25% by volume in air (correct answer)
D. 0%
Rationale: TCEQ and EPA rules limit methane to 25% of the lower explosive limit (LEL), which is 1.25%.
14. Scenario: A fire starts in the active cell. What is the correct first step?
A. Evacuate the facility immediately
B. Notify the supervisor and begin suppression procedures per the emergency response plan (correct
answer)
C. Increase compaction
D. Continue operations away from the fire
Rationale: Fires require immediate controlled response using the site’s emergency plan.
