DEQ STORMWATER MANAGEMENT INSPECTOR
EXAM QUESTIONS AND ANSWERS — STUDY GUIDE |
LATEST UPDATE 2026/2027 | ACTUAL EXAM |
PRACTICE QUESTIONS AND ANSWERS | EXAM
REVIEW | 100% CORRECT ANSWERS | VERIFIED
SOLUTIONS
Course/Program: DEQ Stormwater Management Inspector
Field of Study: Stormwater Management, Erosion and Sediment Control,
Environmental Compliance, Construction Site Inspection
Level: Professional Certification, Environmental Inspector, DEQ
Certification
Edition: 2026–2027
Introduction
This comprehensive practice examination is designed for candidates
preparing for the Department of Environmental Quality Stormwater
Management Inspector certification. It contains 100 advanced multiple-
choice questions covering stormwater regulations, erosion and sediment
control, best management practices, site inspection procedures,
hydrology, pollution prevention, maintenance requirements,
enforcement, safety, and documentation. Each question reflects current
federal, state, and local stormwater requirements, including NPDES
permits, SWPPP development and implementation, and field inspection
protocols. The answer key provides detailed rationales to reinforce
correct regulatory interpretation and practical field decision-making.
Use this document to assess readiness, identify knowledge gaps, and
strengthen preparation for the 2026–2027 examination cycle. All
,questions are original practice items and are not from actual DEQ
exams.
Table of Contents
1. Stormwater Regulations and Permitting
2. Erosion and Sediment Control Fundamentals
3. Best Management Practices (BMPs)
4. Inspection Procedures and Documentation
5. Site Assessment and Hydrology
6. Pollution Prevention and Good Housekeeping
7. Maintenance, Enforcement, and Compliance
8. Safety and Professional Practice
9. Calculations and Measurements
10. Special Situations and Case Scenarios
1.
Which federal regulation established the National Pollutant Discharge
Elimination System (NPDES) for stormwater discharges?
A) Clean Air Act
B) Clean Water Act
C) Resource Conservation and Recovery Act
D) Safe Drinking Water Act
Correct Answer: B
The Clean Water Act of 1972 established the NPDES permit program,
which regulates point source discharges of pollutants, including
stormwater from industrial and construction activities. The Clean Air Act
,regulates air emissions; RCRA regulates hazardous waste; the Safe
Drinking Water Act regulates public water systems.
2.
A construction site disturbing 5 acres or more requires which type of
permit?
A) No permit is required if the project is temporary
B) An NPDES Construction General Permit (CGP) for stormwater
discharges
C) A wastewater discharge permit for process water only
D) A hazardous waste permit
Correct Answer: B
Under federal regulations, construction activities that disturb 1 acre or
more (or less than 1 acre if part of a larger common plan of
development) require coverage under an NPDES Construction General
Permit. Some states may have lower thresholds, but 5 acres clearly
requires the CGP. Hazardous waste and process water permits are
unrelated to stormwater.
3.
What is a Stormwater Pollution Prevention Plan (SWPPP)?
A) A financial plan for funding construction projects
B) A site-specific, written document that identifies potential sources of
stormwater pollution and describes control measures to prevent
pollution
C) A legal document that replaces the need for a permit
D) A marketing brochure for construction companies
, Correct Answer: B
A SWPPP is a site-specific plan required by the NPDES permit that
describes potential pollution sources, erosion and sediment controls,
and other BMPs to be implemented to prevent stormwater
contamination. It is not a financial plan, does not replace the permit,
and is not marketing material.
4.
Which of the following is the primary goal of erosion control?
A) To prevent sediment from leaving the construction site
B) To prevent soil particles from being detached and transported by
water or wind
C) To filter pollutants after they enter stormwater
D) To increase the speed of stormwater runoff
Correct Answer: B
Erosion control prevents soil detachment and transport. Sediment
control captures soil after it has eroded. Filtering occurs as a sediment
control measure. Increasing runoff speed would worsen erosion.
5.
Which of the following is an example of an erosion control BMP?
A) Silt fence
B) Sediment basin
C) Temporary seeding and mulching
D) Check dam made of gravel
Correct Answer: C
Temporary seeding and mulching protect exposed soil from erosion. Silt
fences, sediment basins, and check dams are sediment control measures
EXAM QUESTIONS AND ANSWERS — STUDY GUIDE |
LATEST UPDATE 2026/2027 | ACTUAL EXAM |
PRACTICE QUESTIONS AND ANSWERS | EXAM
REVIEW | 100% CORRECT ANSWERS | VERIFIED
SOLUTIONS
Course/Program: DEQ Stormwater Management Inspector
Field of Study: Stormwater Management, Erosion and Sediment Control,
Environmental Compliance, Construction Site Inspection
Level: Professional Certification, Environmental Inspector, DEQ
Certification
Edition: 2026–2027
Introduction
This comprehensive practice examination is designed for candidates
preparing for the Department of Environmental Quality Stormwater
Management Inspector certification. It contains 100 advanced multiple-
choice questions covering stormwater regulations, erosion and sediment
control, best management practices, site inspection procedures,
hydrology, pollution prevention, maintenance requirements,
enforcement, safety, and documentation. Each question reflects current
federal, state, and local stormwater requirements, including NPDES
permits, SWPPP development and implementation, and field inspection
protocols. The answer key provides detailed rationales to reinforce
correct regulatory interpretation and practical field decision-making.
Use this document to assess readiness, identify knowledge gaps, and
strengthen preparation for the 2026–2027 examination cycle. All
,questions are original practice items and are not from actual DEQ
exams.
Table of Contents
1. Stormwater Regulations and Permitting
2. Erosion and Sediment Control Fundamentals
3. Best Management Practices (BMPs)
4. Inspection Procedures and Documentation
5. Site Assessment and Hydrology
6. Pollution Prevention and Good Housekeeping
7. Maintenance, Enforcement, and Compliance
8. Safety and Professional Practice
9. Calculations and Measurements
10. Special Situations and Case Scenarios
1.
Which federal regulation established the National Pollutant Discharge
Elimination System (NPDES) for stormwater discharges?
A) Clean Air Act
B) Clean Water Act
C) Resource Conservation and Recovery Act
D) Safe Drinking Water Act
Correct Answer: B
The Clean Water Act of 1972 established the NPDES permit program,
which regulates point source discharges of pollutants, including
stormwater from industrial and construction activities. The Clean Air Act
,regulates air emissions; RCRA regulates hazardous waste; the Safe
Drinking Water Act regulates public water systems.
2.
A construction site disturbing 5 acres or more requires which type of
permit?
A) No permit is required if the project is temporary
B) An NPDES Construction General Permit (CGP) for stormwater
discharges
C) A wastewater discharge permit for process water only
D) A hazardous waste permit
Correct Answer: B
Under federal regulations, construction activities that disturb 1 acre or
more (or less than 1 acre if part of a larger common plan of
development) require coverage under an NPDES Construction General
Permit. Some states may have lower thresholds, but 5 acres clearly
requires the CGP. Hazardous waste and process water permits are
unrelated to stormwater.
3.
What is a Stormwater Pollution Prevention Plan (SWPPP)?
A) A financial plan for funding construction projects
B) A site-specific, written document that identifies potential sources of
stormwater pollution and describes control measures to prevent
pollution
C) A legal document that replaces the need for a permit
D) A marketing brochure for construction companies
, Correct Answer: B
A SWPPP is a site-specific plan required by the NPDES permit that
describes potential pollution sources, erosion and sediment controls,
and other BMPs to be implemented to prevent stormwater
contamination. It is not a financial plan, does not replace the permit,
and is not marketing material.
4.
Which of the following is the primary goal of erosion control?
A) To prevent sediment from leaving the construction site
B) To prevent soil particles from being detached and transported by
water or wind
C) To filter pollutants after they enter stormwater
D) To increase the speed of stormwater runoff
Correct Answer: B
Erosion control prevents soil detachment and transport. Sediment
control captures soil after it has eroded. Filtering occurs as a sediment
control measure. Increasing runoff speed would worsen erosion.
5.
Which of the following is an example of an erosion control BMP?
A) Silt fence
B) Sediment basin
C) Temporary seeding and mulching
D) Check dam made of gravel
Correct Answer: C
Temporary seeding and mulching protect exposed soil from erosion. Silt
fences, sediment basins, and check dams are sediment control measures
