CPESC EXAM NEWEST ACTUAL EXAM /CPESC EXAM
PREPARATION/CPESC EXAM PRACTICE COMPLETE 150
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Question 1
Which of the following is the primary force causing soil erosion by water?
A) Wind velocity.
B) Gravitational force acting on water runoff.
C) Chemical reaction in soil.
D) Freezing and thawing cycles.
E) Plant root growth.
Correct Answer: B) Gravitational force acting on water runoff.
Rationale: Gravitational force drives water downhill, providing the
energy for overland flow and concentrated flow, which detaches and
transports soil particles.
Question 2
What is the main objective of "erosion control" measures?
A) To collect sediment after it has left the disturbed area.
B) To prevent or reduce soil detachment and movement.
C) To remove excess water from a construction site.
D) To stabilize disturbed soil with chemical agents.
E) To enhance vegetative growth.
Correct Answer: B) To prevent or reduce soil detachment and
movement.
Rationale: Erosion control measures are implemented at the source
to keep soil in place by protecting the soil surface and decreasing
runoff velocity.
Question 3
Which of the following is an example of a "structural" erosion control
practice?
A) Applying straw mulch.
B) Seeding with native grasses.
C) Constructing a diversion dike.
D) Implementing a phased construction schedule.
E) Installing silt fence.
Correct Answer: C) Constructing a diversion dike.
Rationale: Structural erosion control practices involve modifying the
landscape with engineered structures to manage runoff. Diversion
dikes redirect runoff away from disturbed areas. Silt fences are
sediment control, not primarily erosion control.
,Question 4
What is the primary objective of "sediment control" measures?
A) To prevent soil detachment from the source.
B) To capture and retain soil particles after they have been detached and
moved by runoff.
C) To reduce the velocity of wind erosion.
D) To enhance water infiltration into the soil.
E) To promote healthy vegetative growth.
Correct Answer: B) To capture and retain soil particles after they have
been detached and moved by runoff.
Rationale: Sediment control measures are "downstream" practices
designed to filter out or settle detached soil particles from runoff
before they leave the construction site or enter receiving waters.
Question 5
Which of the following is an example of a "vegetative" erosion control
practice?
A) Constructing a check dam.
B) Installing a rock filter dam.
C) Establishing temporary seeding and mulching.
D) Building a sediment trap.
E) Installing a permeable pavement system.
Correct Answer: C) Establishing temporary seeding and mulching.
Rationale: Vegetative practices use plants and plant materials to
protect the soil surface from the erosive forces of rain and wind.
Temporary seeding and mulching are common examples.
Question 6
What does "BMP" stand for in the context of erosion and sediment control?
A) Best Management Practice.
B) Basic Monitoring Procedure.
C) Build Material Protocol.
D) Bioremediation Management Plan.
E) Best Material Purchase.
Correct Answer: A) Best Management Practice.
Rationale: BMPs are practices, or combinations of practices, that are
determined to be the most effective and practicable means of
preventing or reducing non-point source pollution, including erosion
and sediment.
,Question 7
The "Universal Soil Loss Equation" (USLE) primarily estimates:
A) Sediment deposition rates.
B) Long-term average annual soil loss from sheet and rill erosion.
C) Wind erosion rates.
D) The effectiveness of sediment control measures.
E) Soil infiltration rates.
Correct Answer: B) Long-term average annual soil loss from sheet and
rill erosion.
Rationale: USLE is a mathematical model used to predict the average
annual rate of soil erosion by water on a given slope, providing a
tool for conservation planning.
Question 8
Which of the following factors is NOT part of the Universal Soil Loss Equation
(USLE)?
A) Rainfall erosivity factor (R).
B) Soil erodibility factor (K).
C) Slope length and steepness factor (LS).
D) Land use and management factor (C).
E) Wind speed factor (W).
Correct Answer: E) Wind speed factor (W).
Rationale: USLE (A = R K LS C P) is specifically for water erosion.
Wind speed is a factor in wind erosion equations, not USLE.
Question 9
What is the purpose of a "diversion dike" or "diversion berm" on a
construction site?
A) To filter sediment from concentrated flow.
B) To collect and store sediment.
C) To intercept and divert runoff from undisturbed areas around a disturbed
area.
D) To slow down runoff within a disturbed area.
E) To create a temporary sediment basin.
Correct Answer: C) To intercept and divert runoff from undisturbed
areas around a disturbed area.
Rationale: Diversions are structural measures used to redirect clean
runoff away from exposed soil, or to safely convey sediment-laden
runoff to a sediment trapping facility.
, Question 10
Which of the following is a primary function of "mulch" in erosion control?
A) To increase soil compaction.
B) To replace topsoil.
C) To protect the soil surface from raindrop impact and conserve soil
moisture.
D) To create a barrier for sediment flow.
E) To increase runoff velocity.
Correct Answer: C) To protect the soil surface from raindrop impact
and conserve soil moisture.
Rationale: Mulch (e.g., straw, wood chips) acts as a protective layer,
dissipating the energy of raindrops, preventing soil detachment,
and reducing runoff velocity. It also helps retain moisture, aiding
vegetation establishment.
Question 11
What does "ESCP" stand for in the context of construction activities?
A) Erosion and Sediment Control Plan.
B) Environmental Safety Certification Program.
C) Engineering Standards and Construction Procedures.
D) Equipment Safety Check Protocol.
E) Emergency Spill Containment Procedure.
Correct Answer: A) Erosion and Sediment Control Plan.
Rationale: An ESCP is a site-specific plan that identifies potential
erosion and sediment sources and specifies BMPs to prevent or
mitigate pollution during construction.
Question 12
Which type of sediment control measure uses a permeable fabric barrier to
filter sediment from sheet flow?
A) Check dam.
B) Sediment basin.
C) Silt fence.
D) Rock filter dam.
E) Diversion swale.
Correct Answer: C) Silt fence.
Rationale: Silt fences are widely used sediment control BMPs. They
are permeable barriers installed across areas of sheet flow to slow
down runoff and allow suspended sediment particles to settle out.
PREPARATION/CPESC EXAM PRACTICE COMPLETE 150
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Question 1
Which of the following is the primary force causing soil erosion by water?
A) Wind velocity.
B) Gravitational force acting on water runoff.
C) Chemical reaction in soil.
D) Freezing and thawing cycles.
E) Plant root growth.
Correct Answer: B) Gravitational force acting on water runoff.
Rationale: Gravitational force drives water downhill, providing the
energy for overland flow and concentrated flow, which detaches and
transports soil particles.
Question 2
What is the main objective of "erosion control" measures?
A) To collect sediment after it has left the disturbed area.
B) To prevent or reduce soil detachment and movement.
C) To remove excess water from a construction site.
D) To stabilize disturbed soil with chemical agents.
E) To enhance vegetative growth.
Correct Answer: B) To prevent or reduce soil detachment and
movement.
Rationale: Erosion control measures are implemented at the source
to keep soil in place by protecting the soil surface and decreasing
runoff velocity.
Question 3
Which of the following is an example of a "structural" erosion control
practice?
A) Applying straw mulch.
B) Seeding with native grasses.
C) Constructing a diversion dike.
D) Implementing a phased construction schedule.
E) Installing silt fence.
Correct Answer: C) Constructing a diversion dike.
Rationale: Structural erosion control practices involve modifying the
landscape with engineered structures to manage runoff. Diversion
dikes redirect runoff away from disturbed areas. Silt fences are
sediment control, not primarily erosion control.
,Question 4
What is the primary objective of "sediment control" measures?
A) To prevent soil detachment from the source.
B) To capture and retain soil particles after they have been detached and
moved by runoff.
C) To reduce the velocity of wind erosion.
D) To enhance water infiltration into the soil.
E) To promote healthy vegetative growth.
Correct Answer: B) To capture and retain soil particles after they have
been detached and moved by runoff.
Rationale: Sediment control measures are "downstream" practices
designed to filter out or settle detached soil particles from runoff
before they leave the construction site or enter receiving waters.
Question 5
Which of the following is an example of a "vegetative" erosion control
practice?
A) Constructing a check dam.
B) Installing a rock filter dam.
C) Establishing temporary seeding and mulching.
D) Building a sediment trap.
E) Installing a permeable pavement system.
Correct Answer: C) Establishing temporary seeding and mulching.
Rationale: Vegetative practices use plants and plant materials to
protect the soil surface from the erosive forces of rain and wind.
Temporary seeding and mulching are common examples.
Question 6
What does "BMP" stand for in the context of erosion and sediment control?
A) Best Management Practice.
B) Basic Monitoring Procedure.
C) Build Material Protocol.
D) Bioremediation Management Plan.
E) Best Material Purchase.
Correct Answer: A) Best Management Practice.
Rationale: BMPs are practices, or combinations of practices, that are
determined to be the most effective and practicable means of
preventing or reducing non-point source pollution, including erosion
and sediment.
,Question 7
The "Universal Soil Loss Equation" (USLE) primarily estimates:
A) Sediment deposition rates.
B) Long-term average annual soil loss from sheet and rill erosion.
C) Wind erosion rates.
D) The effectiveness of sediment control measures.
E) Soil infiltration rates.
Correct Answer: B) Long-term average annual soil loss from sheet and
rill erosion.
Rationale: USLE is a mathematical model used to predict the average
annual rate of soil erosion by water on a given slope, providing a
tool for conservation planning.
Question 8
Which of the following factors is NOT part of the Universal Soil Loss Equation
(USLE)?
A) Rainfall erosivity factor (R).
B) Soil erodibility factor (K).
C) Slope length and steepness factor (LS).
D) Land use and management factor (C).
E) Wind speed factor (W).
Correct Answer: E) Wind speed factor (W).
Rationale: USLE (A = R K LS C P) is specifically for water erosion.
Wind speed is a factor in wind erosion equations, not USLE.
Question 9
What is the purpose of a "diversion dike" or "diversion berm" on a
construction site?
A) To filter sediment from concentrated flow.
B) To collect and store sediment.
C) To intercept and divert runoff from undisturbed areas around a disturbed
area.
D) To slow down runoff within a disturbed area.
E) To create a temporary sediment basin.
Correct Answer: C) To intercept and divert runoff from undisturbed
areas around a disturbed area.
Rationale: Diversions are structural measures used to redirect clean
runoff away from exposed soil, or to safely convey sediment-laden
runoff to a sediment trapping facility.
, Question 10
Which of the following is a primary function of "mulch" in erosion control?
A) To increase soil compaction.
B) To replace topsoil.
C) To protect the soil surface from raindrop impact and conserve soil
moisture.
D) To create a barrier for sediment flow.
E) To increase runoff velocity.
Correct Answer: C) To protect the soil surface from raindrop impact
and conserve soil moisture.
Rationale: Mulch (e.g., straw, wood chips) acts as a protective layer,
dissipating the energy of raindrops, preventing soil detachment,
and reducing runoff velocity. It also helps retain moisture, aiding
vegetation establishment.
Question 11
What does "ESCP" stand for in the context of construction activities?
A) Erosion and Sediment Control Plan.
B) Environmental Safety Certification Program.
C) Engineering Standards and Construction Procedures.
D) Equipment Safety Check Protocol.
E) Emergency Spill Containment Procedure.
Correct Answer: A) Erosion and Sediment Control Plan.
Rationale: An ESCP is a site-specific plan that identifies potential
erosion and sediment sources and specifies BMPs to prevent or
mitigate pollution during construction.
Question 12
Which type of sediment control measure uses a permeable fabric barrier to
filter sediment from sheet flow?
A) Check dam.
B) Sediment basin.
C) Silt fence.
D) Rock filter dam.
E) Diversion swale.
Correct Answer: C) Silt fence.
Rationale: Silt fences are widely used sediment control BMPs. They
are permeable barriers installed across areas of sheet flow to slow
down runoff and allow suspended sediment particles to settle out.
