TEXAS STORMWATER MANAGEMENT
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. Under the federal Clean Water Act, the primary purpose of a
Stormwater Pollution Prevention Plan (SWPPP) is to:
A. Eliminate all runoff from a construction site
B. Document how stormwater pollution will be prevented, minimized,
and controlled
C. Increase groundwater recharge
D. Replace all local erosion control ordinances
Answer: B. Document how stormwater pollution will be prevented,
minimized, and controlled
Rationale: A SWPPP identifies potential pollutant sources and specifies
Best Management Practices (BMPs), inspection schedules, maintenance
procedures, and corrective actions required to minimize pollutant
discharges into waters of the United States. It does not eliminate runoff
entirely.
2. Which permit generally regulates stormwater discharges associated
with construction activities disturbing one acre or more in Texas?
A. Air Quality Permit
B. Industrial Pretreatment Permit
C. Construction General Permit (CGP)
D. Drinking Water Permit
1
,Answer: C. Construction General Permit (CGP)
Rationale: Construction activities disturbing at least one acre, or
smaller sites that are part of a larger common development, typically
require coverage under the Construction General Permit issued under
the National Pollutant Discharge Elimination System (NPDES) or
delegated state program.
3. The primary pollutant of concern during the initial stages of
construction is:
A. Chlorine
B. Sediment
C. Ammonia
D. Sulfur dioxide
Answer: B. Sediment
Rationale: Sediment is the most common pollutant from construction
activities. Excess sediment increases turbidity, smothers aquatic habitat,
transports attached pollutants, and impairs water quality.
4. Which BMP is considered a perimeter sediment control?
A. Concrete washout pit
B. Silt fence
C. Fuel storage cabinet
D. Spill kit
Answer: B. Silt fence
Rationale: Silt fences intercept sheet flow, reducing sediment transport
from disturbed areas. They must be installed correctly and maintained
regularly to remain effective.
2
, 5. Stabilizing disturbed soil as soon as practical primarily reduces:
A. Noise pollution
B. Soil erosion
C. Air temperature
D. Vehicle emissions
Answer: B. Soil erosion
Rationale: Vegetation, mulch, erosion control blankets, and other
stabilization methods protect soil from raindrop impact and runoff,
significantly reducing erosion.
6. A sediment basin is primarily designed to:
A. Increase runoff velocity
B. Capture and settle suspended sediment
C. Store hazardous waste
D. Pump groundwater
Answer: B. Capture and settle suspended sediment
Rationale: Sediment basins slow runoff sufficiently to allow suspended
particles to settle before water is discharged from the site.
7. Which inspection finding requires immediate corrective action?
A. Healthy vegetation
B. Broken silt fence allowing sediment discharge
C. Dry detention basin
D. Stable mulch cover
Answer: B. Broken silt fence allowing sediment discharge
3
, Rationale: Damaged erosion controls that permit sediment to leave the
site violate permit requirements and require prompt repair.
8. What is the primary purpose of inlet protection?
A. Increase drainage capacity
B. Prevent sediment from entering storm drains
C. Improve drinking water quality
D. Store runoff permanently
Answer: B. Prevent sediment from entering storm drains
Rationale: Storm drain inlet protection prevents sediment and debris
from entering municipal separate storm sewer systems (MS4s),
protecting downstream waters.
9. Which activity most increases erosion potential?
A. Maintaining vegetation
B. Large-scale grading without stabilization
C. Installing riprap
D. Applying mulch
Answer: B. Large-scale grading without stabilization
Rationale: Exposed soils lacking vegetation or protective cover are
highly susceptible to erosion from rainfall and runoff.
10. Riprap is primarily used to:
A. Fertilize vegetation
B. Prevent erosion in concentrated flow areas
C. Measure runoff
D. Filter petroleum products
4
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. Under the federal Clean Water Act, the primary purpose of a
Stormwater Pollution Prevention Plan (SWPPP) is to:
A. Eliminate all runoff from a construction site
B. Document how stormwater pollution will be prevented, minimized,
and controlled
C. Increase groundwater recharge
D. Replace all local erosion control ordinances
Answer: B. Document how stormwater pollution will be prevented,
minimized, and controlled
Rationale: A SWPPP identifies potential pollutant sources and specifies
Best Management Practices (BMPs), inspection schedules, maintenance
procedures, and corrective actions required to minimize pollutant
discharges into waters of the United States. It does not eliminate runoff
entirely.
2. Which permit generally regulates stormwater discharges associated
with construction activities disturbing one acre or more in Texas?
A. Air Quality Permit
B. Industrial Pretreatment Permit
C. Construction General Permit (CGP)
D. Drinking Water Permit
1
,Answer: C. Construction General Permit (CGP)
Rationale: Construction activities disturbing at least one acre, or
smaller sites that are part of a larger common development, typically
require coverage under the Construction General Permit issued under
the National Pollutant Discharge Elimination System (NPDES) or
delegated state program.
3. The primary pollutant of concern during the initial stages of
construction is:
A. Chlorine
B. Sediment
C. Ammonia
D. Sulfur dioxide
Answer: B. Sediment
Rationale: Sediment is the most common pollutant from construction
activities. Excess sediment increases turbidity, smothers aquatic habitat,
transports attached pollutants, and impairs water quality.
4. Which BMP is considered a perimeter sediment control?
A. Concrete washout pit
B. Silt fence
C. Fuel storage cabinet
D. Spill kit
Answer: B. Silt fence
Rationale: Silt fences intercept sheet flow, reducing sediment transport
from disturbed areas. They must be installed correctly and maintained
regularly to remain effective.
2
, 5. Stabilizing disturbed soil as soon as practical primarily reduces:
A. Noise pollution
B. Soil erosion
C. Air temperature
D. Vehicle emissions
Answer: B. Soil erosion
Rationale: Vegetation, mulch, erosion control blankets, and other
stabilization methods protect soil from raindrop impact and runoff,
significantly reducing erosion.
6. A sediment basin is primarily designed to:
A. Increase runoff velocity
B. Capture and settle suspended sediment
C. Store hazardous waste
D. Pump groundwater
Answer: B. Capture and settle suspended sediment
Rationale: Sediment basins slow runoff sufficiently to allow suspended
particles to settle before water is discharged from the site.
7. Which inspection finding requires immediate corrective action?
A. Healthy vegetation
B. Broken silt fence allowing sediment discharge
C. Dry detention basin
D. Stable mulch cover
Answer: B. Broken silt fence allowing sediment discharge
3
, Rationale: Damaged erosion controls that permit sediment to leave the
site violate permit requirements and require prompt repair.
8. What is the primary purpose of inlet protection?
A. Increase drainage capacity
B. Prevent sediment from entering storm drains
C. Improve drinking water quality
D. Store runoff permanently
Answer: B. Prevent sediment from entering storm drains
Rationale: Storm drain inlet protection prevents sediment and debris
from entering municipal separate storm sewer systems (MS4s),
protecting downstream waters.
9. Which activity most increases erosion potential?
A. Maintaining vegetation
B. Large-scale grading without stabilization
C. Installing riprap
D. Applying mulch
Answer: B. Large-scale grading without stabilization
Rationale: Exposed soils lacking vegetation or protective cover are
highly susceptible to erosion from rainfall and runoff.
10. Riprap is primarily used to:
A. Fertilize vegetation
B. Prevent erosion in concentrated flow areas
C. Measure runoff
D. Filter petroleum products
4
