1. Which of the following is the primary purpose of erosion and sediment
control (ESC) measures on construction sites?
A) To enhance soil fertility
B) To prevent soil particles from leaving the site and entering water bodies
C) To speed up project timelines
D) To reduce equipment costs
Answer: B
Explanation: ESC measures focus on protecting water quality by preventing
sediment (a pollutant under Canadian law) from leaving disturbed areas and
impacting fish habitat, storm drains, and downstream ecosystems.
2. Under the Canadian Fisheries Act, the release of sediment into a fish-
bearing water body can be considered:
A) Normal construction activity
B) A harmful alteration, disruption, or destruction (HADD) of fish habitat
C) Acceptable if below 25 NTU
D) Exempt if during rainfall
Answer: B
Explanation: The Fisheries Act prohibits any harmful alteration, disruption, or
destruction of fish habitat (HADD). Sediment releases that degrade aquatic
habitats can trigger enforcement actions, regardless of turbidity levels.
3. Which of the following is an erosion control practice rather than a
sediment control practice?
A) Silt fence
B) Mulching and seeding
,C) Sediment basin
D) Straw bale barrier
Answer: B
Explanation: Erosion controls prevent soil from detaching at the source (e.g.,
vegetation, mulching). Sediment controls (silt fences, basins) intercept soil after
erosion has occurred.
4. During inspection, you observe a silt fence with 30 cm of accumulated
sediment behind it. The maximum recommended height before
maintenance is usually:
A) 10% of fence height
B) 25–33% of fence height
C) 50% of fence height
D) 100% of fence height
Answer: B
Explanation: Industry guidance and BMP manuals recommend cleaning out
silt fences once sediment reaches 25–33% of the fence height to maintain
effectiveness.
5. Which factor has the greatest influence on soil erosion rates?
A) Soil color
B) Rainfall intensity and duration
C) Air temperature
D) Equipment type used on-site
Answer: B
Explanation: While soil type and slope matter, rainfall erosivity (intensity and
duration) is the single most critical driver of erosion potential.
6. True or False: Hydroseeding provides immediate erosion control.
Answer: False
Explanation: Hydroseeding needs time (usually 7–21 days) for seed
germination and vegetation establishment. Until vegetation takes hold, it is not
an effective standalone erosion control.
,7. As a CISEC inspector, your field notes must include:
A) Only visual observations
B) Inspector’s opinions about contractor performance
C) Measurable observations, deficiencies, BMP locations, and maintenance
needs
D) Only weather conditions
Answer: C
Explanation: Inspection reports should be objective and detailed, recording
BMP conditions, deficiencies, corrective actions, and site-specific factors like
rainfall, soil disturbance, and stabilization progress.
8. In Canada, stormwater runoff that leaves a construction site without
treatment is considered:
A) Non-point source pollution
B) Acceptable if diluted
C) A natural occurrence, not regulated
D) Exempt under provincial law
Answer: A
Explanation: Construction runoff is classified as non-point source pollution,
which can impair water quality. ESC practices aim to prevent this.
9. What is the best immediate action if you notice turbid water actively
discharging from a site into a creek during inspection?
A) Wait until the next scheduled report
B) Document, notify site superintendent, and recommend immediate
containment measures
C) Ignore since it’s a rain event
D) Report only at project closeout
Answer: B
Explanation: Inspectors must act promptly—documenting the event, notifying
responsible personnel, and recommending immediate corrective actions. Serious
violations may also need reporting to regulators.
10. Which of the following slopes would have the highest erosion risk if left
bare?
A) 2:1 slope
, B) 3:1 slope
C) 4:1 slope
D) Flat surface
Answer: A
Explanation: The steeper the slope, the greater the velocity of runoff and
erosion potential. A 2:1 slope is much steeper than a 4:1 and requires robust
stabilization.
11. Which of the following is NOT considered a Best Management Practice
(BMP) for erosion and sediment control?
A) Silt fence
B) Sediment basin
C) Riprap check dam
D) Removing vegetation from slopes during rainy season
Answer: D
Explanation: Removing vegetation increases erosion. Vegetative cover is a
fundamental erosion control practice.
12. The minimum depth for trenching in a silt fence installation is typically:
A) 5 cm
B) 10 cm
C) 15–20 cm
D) 50 cm
Answer: C
Explanation: Silt fences must be entrenched 15–20 cm into the soil to prevent
undercutting by stormwater.
13. Which Canadian act regulates deposits of deleterious substances, such
as sediment, into fish-bearing waters?
A) Canadian Environmental Assessment Act
B) Canadian Fisheries Act
C) Migratory Birds Convention Act
D) Canadian Navigable Waters Act
Answer: B
Explanation: The Fisheries Act prohibits the deposit of deleterious substances
(including sediment) into fish-bearing waters.
control (ESC) measures on construction sites?
A) To enhance soil fertility
B) To prevent soil particles from leaving the site and entering water bodies
C) To speed up project timelines
D) To reduce equipment costs
Answer: B
Explanation: ESC measures focus on protecting water quality by preventing
sediment (a pollutant under Canadian law) from leaving disturbed areas and
impacting fish habitat, storm drains, and downstream ecosystems.
2. Under the Canadian Fisheries Act, the release of sediment into a fish-
bearing water body can be considered:
A) Normal construction activity
B) A harmful alteration, disruption, or destruction (HADD) of fish habitat
C) Acceptable if below 25 NTU
D) Exempt if during rainfall
Answer: B
Explanation: The Fisheries Act prohibits any harmful alteration, disruption, or
destruction of fish habitat (HADD). Sediment releases that degrade aquatic
habitats can trigger enforcement actions, regardless of turbidity levels.
3. Which of the following is an erosion control practice rather than a
sediment control practice?
A) Silt fence
B) Mulching and seeding
,C) Sediment basin
D) Straw bale barrier
Answer: B
Explanation: Erosion controls prevent soil from detaching at the source (e.g.,
vegetation, mulching). Sediment controls (silt fences, basins) intercept soil after
erosion has occurred.
4. During inspection, you observe a silt fence with 30 cm of accumulated
sediment behind it. The maximum recommended height before
maintenance is usually:
A) 10% of fence height
B) 25–33% of fence height
C) 50% of fence height
D) 100% of fence height
Answer: B
Explanation: Industry guidance and BMP manuals recommend cleaning out
silt fences once sediment reaches 25–33% of the fence height to maintain
effectiveness.
5. Which factor has the greatest influence on soil erosion rates?
A) Soil color
B) Rainfall intensity and duration
C) Air temperature
D) Equipment type used on-site
Answer: B
Explanation: While soil type and slope matter, rainfall erosivity (intensity and
duration) is the single most critical driver of erosion potential.
6. True or False: Hydroseeding provides immediate erosion control.
Answer: False
Explanation: Hydroseeding needs time (usually 7–21 days) for seed
germination and vegetation establishment. Until vegetation takes hold, it is not
an effective standalone erosion control.
,7. As a CISEC inspector, your field notes must include:
A) Only visual observations
B) Inspector’s opinions about contractor performance
C) Measurable observations, deficiencies, BMP locations, and maintenance
needs
D) Only weather conditions
Answer: C
Explanation: Inspection reports should be objective and detailed, recording
BMP conditions, deficiencies, corrective actions, and site-specific factors like
rainfall, soil disturbance, and stabilization progress.
8. In Canada, stormwater runoff that leaves a construction site without
treatment is considered:
A) Non-point source pollution
B) Acceptable if diluted
C) A natural occurrence, not regulated
D) Exempt under provincial law
Answer: A
Explanation: Construction runoff is classified as non-point source pollution,
which can impair water quality. ESC practices aim to prevent this.
9. What is the best immediate action if you notice turbid water actively
discharging from a site into a creek during inspection?
A) Wait until the next scheduled report
B) Document, notify site superintendent, and recommend immediate
containment measures
C) Ignore since it’s a rain event
D) Report only at project closeout
Answer: B
Explanation: Inspectors must act promptly—documenting the event, notifying
responsible personnel, and recommending immediate corrective actions. Serious
violations may also need reporting to regulators.
10. Which of the following slopes would have the highest erosion risk if left
bare?
A) 2:1 slope
, B) 3:1 slope
C) 4:1 slope
D) Flat surface
Answer: A
Explanation: The steeper the slope, the greater the velocity of runoff and
erosion potential. A 2:1 slope is much steeper than a 4:1 and requires robust
stabilization.
11. Which of the following is NOT considered a Best Management Practice
(BMP) for erosion and sediment control?
A) Silt fence
B) Sediment basin
C) Riprap check dam
D) Removing vegetation from slopes during rainy season
Answer: D
Explanation: Removing vegetation increases erosion. Vegetative cover is a
fundamental erosion control practice.
12. The minimum depth for trenching in a silt fence installation is typically:
A) 5 cm
B) 10 cm
C) 15–20 cm
D) 50 cm
Answer: C
Explanation: Silt fences must be entrenched 15–20 cm into the soil to prevent
undercutting by stormwater.
13. Which Canadian act regulates deposits of deleterious substances, such
as sediment, into fish-bearing waters?
A) Canadian Environmental Assessment Act
B) Canadian Fisheries Act
C) Migratory Birds Convention Act
D) Canadian Navigable Waters Act
Answer: B
Explanation: The Fisheries Act prohibits the deposit of deleterious substances
(including sediment) into fish-bearing waters.
