Stormwater Quality Inspector
Certification Exam Questions and
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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Question 1
What is the primary purpose of a stormwater quality inspection?
A. To accelerate construction activities
B. To determine the contractor's profit margin
C. To identify conditions that may cause stormwater pollution and evaluate
required controls
D. To redesign the entire project drainage system
Correct Answer: C
Rationale: A stormwater quality inspection evaluates site conditions, pollution
sources, and control measures to determine whether stormwater requirements
are being properly implemented. An inspector is not generally responsible for
redesigning an entire drainage system.
Question 2
Which document commonly identifies the stormwater pollution-prevention
practices to be implemented at a regulated construction site?
A. Stormwater Pollution Prevention Plan
B. Building lease agreement
C. Equipment maintenance log only
D. Property tax assessment
,Correct Answer: A
Rationale: A Stormwater Pollution Prevention Plan (SWPPP) identifies applicable
pollution-prevention measures, site practices, inspection requirements, and other
stormwater controls. The inspector uses the applicable plan and permit
requirements as references during inspection.
Question 3
What is the primary purpose of a stormwater management BMP?
A. To increase pollutant discharge
B. To control or reduce stormwater quantity or pollutant impacts
C. To eliminate the need for inspections
D. To increase exposed soil
Correct Answer: B
Rationale: Best management practices (BMPs) are measures used to prevent,
reduce, or manage stormwater impacts. Their functions can include runoff
reduction, sediment control, pollutant prevention, treatment, or flow
management.
Question 4
Which activity is an example of good housekeeping on a construction site?
A. Leaving waste materials exposed to rainfall
B. Storing chemicals directly beside a storm drain
C. Maintaining materials and waste so they do not become stormwater pollutant
sources
D. Washing concrete residue into a drainage inlet
Correct Answer: C
Rationale: Good housekeeping reduces the potential for materials, waste, and
pollutants to come into contact with stormwater. Proper storage, cleanup, and
waste management are important pollution-prevention practices.
,Question 5
Which pollutant is commonly associated with construction-site soil disturbance?
A. Sediment
B. Dissolved oxygen only
C. Atmospheric nitrogen only
D. Chlorophyll
Correct Answer: A
Rationale: Construction activities expose and disturb soil, making sediment a
major potential stormwater pollutant. Sediment can be transported by runoff into
drainage systems and receiving waters.
Question 6
What is the primary difference between erosion and sedimentation?
A. Erosion is soil detachment and transport, while sedimentation is the settling of
transported particles
B. Erosion occurs only in groundwater
C. Sedimentation always occurs before erosion
D. Erosion and sedimentation are identical processes
Correct Answer: A
Rationale: Erosion involves the detachment and movement of soil by water, wind,
ice, or other forces. Sedimentation occurs when transported particles settle as the
energy of the transporting medium decreases.
Question 7
Which condition generally increases stormwater runoff?
A. Dense vegetation
B. Increased impervious surface area
, C. Increased soil infiltration
D. Increased surface storage
Correct Answer: B
Rationale: Impervious surfaces such as pavement and roofs prevent or reduce
infiltration, causing a larger portion of rainfall to become surface runoff.
Question 8
What does run-on mean in stormwater management?
A. Runoff generated within a detention basin
B. Water entering a project area from an adjacent or external area
C. Water that has infiltrated into groundwater
D. Water discharged from a treatment plant
Correct Answer: B
Rationale: Run-on is water originating outside the area being evaluated that flows
onto the site. Managing run-on can prevent clean external water from contacting
disturbed areas and becoming contaminated.
Question 9
Which condition generally increases soil erosion potential?
A. Dense established vegetation
B. Exposed soil combined with concentrated runoff
C. Stable mulch
D. Permanent pavement
Correct Answer: B
Rationale: Exposed soil is vulnerable to detachment, and concentrated runoff can
transport detached particles. The combination can produce substantial erosion.
Question 10
Certification Exam Questions and
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
Question 1
What is the primary purpose of a stormwater quality inspection?
A. To accelerate construction activities
B. To determine the contractor's profit margin
C. To identify conditions that may cause stormwater pollution and evaluate
required controls
D. To redesign the entire project drainage system
Correct Answer: C
Rationale: A stormwater quality inspection evaluates site conditions, pollution
sources, and control measures to determine whether stormwater requirements
are being properly implemented. An inspector is not generally responsible for
redesigning an entire drainage system.
Question 2
Which document commonly identifies the stormwater pollution-prevention
practices to be implemented at a regulated construction site?
A. Stormwater Pollution Prevention Plan
B. Building lease agreement
C. Equipment maintenance log only
D. Property tax assessment
,Correct Answer: A
Rationale: A Stormwater Pollution Prevention Plan (SWPPP) identifies applicable
pollution-prevention measures, site practices, inspection requirements, and other
stormwater controls. The inspector uses the applicable plan and permit
requirements as references during inspection.
Question 3
What is the primary purpose of a stormwater management BMP?
A. To increase pollutant discharge
B. To control or reduce stormwater quantity or pollutant impacts
C. To eliminate the need for inspections
D. To increase exposed soil
Correct Answer: B
Rationale: Best management practices (BMPs) are measures used to prevent,
reduce, or manage stormwater impacts. Their functions can include runoff
reduction, sediment control, pollutant prevention, treatment, or flow
management.
Question 4
Which activity is an example of good housekeeping on a construction site?
A. Leaving waste materials exposed to rainfall
B. Storing chemicals directly beside a storm drain
C. Maintaining materials and waste so they do not become stormwater pollutant
sources
D. Washing concrete residue into a drainage inlet
Correct Answer: C
Rationale: Good housekeeping reduces the potential for materials, waste, and
pollutants to come into contact with stormwater. Proper storage, cleanup, and
waste management are important pollution-prevention practices.
,Question 5
Which pollutant is commonly associated with construction-site soil disturbance?
A. Sediment
B. Dissolved oxygen only
C. Atmospheric nitrogen only
D. Chlorophyll
Correct Answer: A
Rationale: Construction activities expose and disturb soil, making sediment a
major potential stormwater pollutant. Sediment can be transported by runoff into
drainage systems and receiving waters.
Question 6
What is the primary difference between erosion and sedimentation?
A. Erosion is soil detachment and transport, while sedimentation is the settling of
transported particles
B. Erosion occurs only in groundwater
C. Sedimentation always occurs before erosion
D. Erosion and sedimentation are identical processes
Correct Answer: A
Rationale: Erosion involves the detachment and movement of soil by water, wind,
ice, or other forces. Sedimentation occurs when transported particles settle as the
energy of the transporting medium decreases.
Question 7
Which condition generally increases stormwater runoff?
A. Dense vegetation
B. Increased impervious surface area
, C. Increased soil infiltration
D. Increased surface storage
Correct Answer: B
Rationale: Impervious surfaces such as pavement and roofs prevent or reduce
infiltration, causing a larger portion of rainfall to become surface runoff.
Question 8
What does run-on mean in stormwater management?
A. Runoff generated within a detention basin
B. Water entering a project area from an adjacent or external area
C. Water that has infiltrated into groundwater
D. Water discharged from a treatment plant
Correct Answer: B
Rationale: Run-on is water originating outside the area being evaluated that flows
onto the site. Managing run-on can prevent clean external water from contacting
disturbed areas and becoming contaminated.
Question 9
Which condition generally increases soil erosion potential?
A. Dense established vegetation
B. Exposed soil combined with concentrated runoff
C. Stable mulch
D. Permanent pavement
Correct Answer: B
Rationale: Exposed soil is vulnerable to detachment, and concentrated runoff can
transport detached particles. The combination can produce substantial erosion.
Question 10
