Texas Solid Waste Operator Certification Pract
h h h h h
ice Exam Questions And Correct Answers (Verif
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ied Answers) Plus Rationales 2026|2027 Q&A
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| Instant Download Pdf
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1. What is the primary purpose of daily cover in a landfill?
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A. Prevent leachate formation h h
B. Reduce odors and control vectors h h h h
C. Increase decomposition h
D. Prevent groundwater contamination h h
B. Reduce odors and control vectors
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Daily cover controls odors, minimizes windblown debris, and deters pe
h h h h h h h h h
sts like rodents and birds.
h h h h
2. Which agency regulates municipal solid waste facilities in Texas?
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A. TCEQ
B. EPA
C. OSHA
D. FEMA
A. TCEQ
The Texas Commission on Environmental Quality (TCEQ) is responsibl
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e for permitting and regulating solid waste facilities in Texas.
h h h h h h h h h
,3. Leachate is best defined as: h h h h
A. Gas released from decomposing waste
h h h h
B. A type of recycling process
h h h h
C. Liquid that drains from a landfill h h h h h
D. A method of incineration
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C. Liquid that drains from a landfill
h h h h h h
Leachate forms when water filters through waste and extracts harmfu
h h h h h h h h h
l substances.
h
4. What is the typical moisture content goal for optimal landfill c
h h h h h h h h h h
ompaction?
A. 5%
B. 10%
C. 20%
D. 35%
C. 20% h
Moisture around 20% allows better compaction while minimizing dust
h h h h h h h h
and equipment wear.
h h h
5. What is the minimum frequency for applying daily cover in most Texas l
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andfills?
A. Once a week h h
B. Every other day h h
C. Once per month h h
D. At the end of each operating day
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D. At the end of each operating day
h h h h h h h
Texas regulations require that daily cover be applied at the end of eac
h h h h h h h h h h h h
h working day.
h h
6. What is the primary hazard of landfill gas?
h h h h h h h
A. It increases humidity
h h
B. It causes rusting
h h
, C. It is explosive
h h
D. It clogs drainage systems
h h h
C. It is explosive
h h h
Methane, a major component of landfill gas, is highly flammable and expl
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osive.
7. What PPE is most important when working around compactors?
h h h h h h h h
A. Sunglasses
B. Lab coat h
C. Hard hat and steel-toed boots
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D. Swimming goggles h
C. Hard hat and steel-toed boots
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Heavy equipment creates a high risk for impact injuries, so hard hats a
h h h h h h h h h h h h
nd safety footwear are critical.
h h h h
8. What equipment is commonly used to compact waste in landfills?
h h h h h h h h h
A. Excavator
B. Bulldozer
C. Compactor with steel cleats h h h
D. Backhoe
C. Compactor with steel cleats
h h h h
Specialized compactors with steel cleats increase the density of the w
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aste.
9. Which gas is a byproduct of anaerobic decomposition in landfills?
h h h h h h h h h
A. Oxygen
B. Methane
C. Nitrogen
D. Carbon monoxide h
B. Methane
Anaerobic conditions in landfills produce methane gas as organic mat
h h h h h h h h h
ter decomposes.
h
, 10. What color typically indicates hazardous waste containers?
h h h h h h
A. Blue
B. Green
C. Yellow or red h h
D. White
C. Yellow or red h h
Hazardous waste containers are often color-
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coded red or yellow to indicate danger and avoid cross-
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contamination.
11. The liner system in a landfill serves to:
h h h h h h h
A. Increase decomposition h
B. Capture sunlight h
C. Prevent leachate migration h h
D. Promote vegetation growth h h
C. Prevent leachate migration
h h h
Liner systems protect groundwater by containing leachate within the lan
h h h h h h h h h
dfill.
12. Tipping fees are: h h
A. Tips given to landfill workers
h h h h
B. Fines for illegal dumping
h h h
C. Charges assessed for waste disposal
h h h h
D. Penalties for poor landfill management h h h h
C. Charges assessed for waste disposal
h h h h h
Tipping fees are paid by waste haulers when they deliver waste to a landfi
h h h h h h h h h h h h h
ll.
13. What is the minimum required final cover thickness for Texas
h h h h h h h h h h
MSW landfills?
h
A. 6 inches
h
B. 12 inches
h
C. 18 inches
h
h h h h h
ice Exam Questions And Correct Answers (Verif
h h h h h h
ied Answers) Plus Rationales 2026|2027 Q&A
h h h h h h
| Instant Download Pdf
h h h
1. What is the primary purpose of daily cover in a landfill?
h h h h h h h h h h h
A. Prevent leachate formation h h
B. Reduce odors and control vectors h h h h
C. Increase decomposition h
D. Prevent groundwater contamination h h
B. Reduce odors and control vectors
h h h h h
Daily cover controls odors, minimizes windblown debris, and deters pe
h h h h h h h h h
sts like rodents and birds.
h h h h
2. Which agency regulates municipal solid waste facilities in Texas?
h h h h h h h h
A. TCEQ
B. EPA
C. OSHA
D. FEMA
A. TCEQ
The Texas Commission on Environmental Quality (TCEQ) is responsibl
h h h h h h h h
e for permitting and regulating solid waste facilities in Texas.
h h h h h h h h h
,3. Leachate is best defined as: h h h h
A. Gas released from decomposing waste
h h h h
B. A type of recycling process
h h h h
C. Liquid that drains from a landfill h h h h h
D. A method of incineration
h h h
C. Liquid that drains from a landfill
h h h h h h
Leachate forms when water filters through waste and extracts harmfu
h h h h h h h h h
l substances.
h
4. What is the typical moisture content goal for optimal landfill c
h h h h h h h h h h
ompaction?
A. 5%
B. 10%
C. 20%
D. 35%
C. 20% h
Moisture around 20% allows better compaction while minimizing dust
h h h h h h h h
and equipment wear.
h h h
5. What is the minimum frequency for applying daily cover in most Texas l
h h h h h h h h h h h h
andfills?
A. Once a week h h
B. Every other day h h
C. Once per month h h
D. At the end of each operating day
h h h h h h
D. At the end of each operating day
h h h h h h h
Texas regulations require that daily cover be applied at the end of eac
h h h h h h h h h h h h
h working day.
h h
6. What is the primary hazard of landfill gas?
h h h h h h h
A. It increases humidity
h h
B. It causes rusting
h h
, C. It is explosive
h h
D. It clogs drainage systems
h h h
C. It is explosive
h h h
Methane, a major component of landfill gas, is highly flammable and expl
h h h h h h h h h h h
osive.
7. What PPE is most important when working around compactors?
h h h h h h h h
A. Sunglasses
B. Lab coat h
C. Hard hat and steel-toed boots
h h h h
D. Swimming goggles h
C. Hard hat and steel-toed boots
h h h h h
Heavy equipment creates a high risk for impact injuries, so hard hats a
h h h h h h h h h h h h
nd safety footwear are critical.
h h h h
8. What equipment is commonly used to compact waste in landfills?
h h h h h h h h h
A. Excavator
B. Bulldozer
C. Compactor with steel cleats h h h
D. Backhoe
C. Compactor with steel cleats
h h h h
Specialized compactors with steel cleats increase the density of the w
h h h h h h h h h h
aste.
9. Which gas is a byproduct of anaerobic decomposition in landfills?
h h h h h h h h h
A. Oxygen
B. Methane
C. Nitrogen
D. Carbon monoxide h
B. Methane
Anaerobic conditions in landfills produce methane gas as organic mat
h h h h h h h h h
ter decomposes.
h
, 10. What color typically indicates hazardous waste containers?
h h h h h h
A. Blue
B. Green
C. Yellow or red h h
D. White
C. Yellow or red h h
Hazardous waste containers are often color-
h h h h h
coded red or yellow to indicate danger and avoid cross-
h h h h h h h h h
contamination.
11. The liner system in a landfill serves to:
h h h h h h h
A. Increase decomposition h
B. Capture sunlight h
C. Prevent leachate migration h h
D. Promote vegetation growth h h
C. Prevent leachate migration
h h h
Liner systems protect groundwater by containing leachate within the lan
h h h h h h h h h
dfill.
12. Tipping fees are: h h
A. Tips given to landfill workers
h h h h
B. Fines for illegal dumping
h h h
C. Charges assessed for waste disposal
h h h h
D. Penalties for poor landfill management h h h h
C. Charges assessed for waste disposal
h h h h h
Tipping fees are paid by waste haulers when they deliver waste to a landfi
h h h h h h h h h h h h h
ll.
13. What is the minimum required final cover thickness for Texas
h h h h h h h h h h
MSW landfills?
h
A. 6 inches
h
B. 12 inches
h
C. 18 inches
h
