AK ENVIRONMENTAL CONSTRUCTION
CONTRACTOR EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLAD PDF
1. What is the primary purpose of an erosion and sediment
control plan on a construction site?
A. Increase the amount of disturbed soil
B. Prevent all construction activity during rainfall
C. Minimize soil erosion and prevent sediment from leaving the
site
D. Eliminate the need for site inspections
Answer: C. Minimize soil erosion and prevent sediment from
leaving the site
Rationale: Erosion and sediment controls are intended to
stabilize disturbed soil and keep sediment from entering
waterways or adjacent properties.
2. Which construction activity generally has the greatest
potential to expose soil to erosion?
A. Installing interior trim
B. Clearing and grading
C. Painting finished walls
D. Installing light fixtures
,Answer: B. Clearing and grading
Rationale: Clearing vegetation and grading expose soil and alter
drainage patterns, increasing erosion potential.
3. What is the main function of a silt fence?
A. Treat contaminated groundwater
B. Reduce wind speed across a site
C. Intercept and slow sediment-laden sheet flow
D. Replace all other erosion controls
Answer: C. Intercept and slow sediment-laden sheet flow
Rationale: Silt fences are perimeter controls designed primarily
to slow shallow runoff and retain sediment.
4. Where should a silt fence generally be installed?
A. Across a major stream channel
B. Along the downslope perimeter of disturbed areas
C. Inside a building
D. Under a concrete slab
Answer: B. Along the downslope perimeter of disturbed areas
Rationale: Proper placement allows the fence to intercept
runoff before sediment leaves the disturbed area.
5. What is the purpose of stabilizing exposed soil as soon as
practicable?
,A. Increase erosion
B. Reduce erosion and sediment transport
C. Increase runoff velocity
D. Eliminate drainage requirements
Answer: B. Reduce erosion and sediment transport
Rationale: Prompt stabilization through vegetation, mulch,
blankets, or other approved methods reduces exposure to
rainfall and runoff.
6. Which practice is considered a temporary erosion-control
measure?
A. Permanent pavement
B. Temporary seeding
C. Permanent foundation
D. Completed building
Answer: B. Temporary seeding
Rationale: Temporary seeding protects exposed soil until
permanent stabilization can be established.
7. What is the primary purpose of a construction
entrance/exit pad?
A. Store hazardous waste
B. Prevent tracking of sediment onto public roads
, C. Increase vehicle speed
D. Provide permanent parking
Answer: B. Prevent tracking of sediment onto public roads
Rationale: Stabilized entrances reduce soil and mud carried by
construction vehicles onto paved roads.
8. What should be done when sediment accumulates
excessively behind a sediment-control device?
A. Ignore it until project completion
B. Remove and properly dispose of or reuse the sediment as
appropriate
C. Push it into a waterway
D. Wash it downstream
Answer: B. Remove and properly dispose of or reuse the
sediment as appropriate
Rationale: Accumulated sediment must be managed so the
control continues functioning and sediment does not escape.
9. What is the primary environmental concern associated with
uncontrolled construction runoff?
A. Increased indoor lighting
B. Sediment and pollutants entering receiving waters
C. Reduced building height
D. Increased electrical resistance
CONTRACTOR EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLAD PDF
1. What is the primary purpose of an erosion and sediment
control plan on a construction site?
A. Increase the amount of disturbed soil
B. Prevent all construction activity during rainfall
C. Minimize soil erosion and prevent sediment from leaving the
site
D. Eliminate the need for site inspections
Answer: C. Minimize soil erosion and prevent sediment from
leaving the site
Rationale: Erosion and sediment controls are intended to
stabilize disturbed soil and keep sediment from entering
waterways or adjacent properties.
2. Which construction activity generally has the greatest
potential to expose soil to erosion?
A. Installing interior trim
B. Clearing and grading
C. Painting finished walls
D. Installing light fixtures
,Answer: B. Clearing and grading
Rationale: Clearing vegetation and grading expose soil and alter
drainage patterns, increasing erosion potential.
3. What is the main function of a silt fence?
A. Treat contaminated groundwater
B. Reduce wind speed across a site
C. Intercept and slow sediment-laden sheet flow
D. Replace all other erosion controls
Answer: C. Intercept and slow sediment-laden sheet flow
Rationale: Silt fences are perimeter controls designed primarily
to slow shallow runoff and retain sediment.
4. Where should a silt fence generally be installed?
A. Across a major stream channel
B. Along the downslope perimeter of disturbed areas
C. Inside a building
D. Under a concrete slab
Answer: B. Along the downslope perimeter of disturbed areas
Rationale: Proper placement allows the fence to intercept
runoff before sediment leaves the disturbed area.
5. What is the purpose of stabilizing exposed soil as soon as
practicable?
,A. Increase erosion
B. Reduce erosion and sediment transport
C. Increase runoff velocity
D. Eliminate drainage requirements
Answer: B. Reduce erosion and sediment transport
Rationale: Prompt stabilization through vegetation, mulch,
blankets, or other approved methods reduces exposure to
rainfall and runoff.
6. Which practice is considered a temporary erosion-control
measure?
A. Permanent pavement
B. Temporary seeding
C. Permanent foundation
D. Completed building
Answer: B. Temporary seeding
Rationale: Temporary seeding protects exposed soil until
permanent stabilization can be established.
7. What is the primary purpose of a construction
entrance/exit pad?
A. Store hazardous waste
B. Prevent tracking of sediment onto public roads
, C. Increase vehicle speed
D. Provide permanent parking
Answer: B. Prevent tracking of sediment onto public roads
Rationale: Stabilized entrances reduce soil and mud carried by
construction vehicles onto paved roads.
8. What should be done when sediment accumulates
excessively behind a sediment-control device?
A. Ignore it until project completion
B. Remove and properly dispose of or reuse the sediment as
appropriate
C. Push it into a waterway
D. Wash it downstream
Answer: B. Remove and properly dispose of or reuse the
sediment as appropriate
Rationale: Accumulated sediment must be managed so the
control continues functioning and sediment does not escape.
9. What is the primary environmental concern associated with
uncontrolled construction runoff?
A. Increased indoor lighting
B. Sediment and pollutants entering receiving waters
C. Reduced building height
D. Increased electrical resistance
