VA DEQ ESC INSPECTOR EXAM QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES LATEST ALREADY GRADED A+ |
2025/2026
Which entity is responsible for administering the Virginia Erosion and Sediment
Control Program (VESCP)?
a. U.S. EPA
b. Counties and cities (required), towns (optional)
c. Private landowners
d. The federal government
Answer: b
Rationale: Counties and cities must administer VESCP; towns may administer it.
The Federal Water Pollution Control Act was first passed in:
a. 1920
b. 1958
c. 1948
d. 1972
Correct answer: 1948
Rationale: This was the first major U.S. water pollution law; major amendments in
1972 created the Clean Water Act.
A certificate of competence issued by DEQ is valid for:
a. 1 year
b. 2 years
c. 3 years
d. 5 years
Correct answer: 3 years
A disturbance of 2,500 sq ft requires ESC compliance if it occurs in:
a. A forest
b. Chesapeake Bay Preservation Areas
c. A federal project
d. A commercial zone
Answer: b
Rationale: VESCP applies to activities ≥2,500 sq ft in Chesapeake Bay
Preservation Areas
,Permanent vegetation is considered established only when:
a. It reaches 50% coverage
b. It is planted
c. It is uniform, mature enough to survive, and will inhibit erosion
d. It germinates within 7 days
Answer: c
Rationale: MS-3 requires that permanent vegetation be uniform, mature enough to
survive, and capable of inhibiting erosion before it is considered established.
Simply planting or partial coverage is insufficient.
Which agency issues 404 permits for work in wetlands and streams?
a. DEQ
b. DGIF
c. VMRC
d. U.S. Army Corps of Engineers
Answer: d U.S. Army Corps of Engineers
The most erosive rainfall in Virginia occurs during:
a. November–January
b. February–April
c. May–September
d. December only
Correct answer: May–September
A Stop Work Order can be issued WITHOUT a Notice to Comply when:
a. The inspector is unavailable
b. The plan was partially approved
c. The LDA started without an approved ESC plan or permits
d. The contractor requests one
Correct answer: c
Minimum Standard 3 is primarily used by inspectors to verify:
a. Pipe sizing
b. Grading accuracy
c. Eligibility for bond or surety release
d. Sediment basin capacity
, Answer: c
Rationale: MS-3 provides the standard for determining whether a site has been
adequately stabilized with permanent vegetation so that bonds or sureties can be
released.
Sediment trapping devices should be installed at which point of construction?
a. At project completion
b. At the midpoint of grading
c. As a first-step measure
d. After vegetation is established
Correct answer: c
Rationale: MS-4 requires installation before major disturbance to capture sediment
early.
Roughening a slope surface results in which of the following?
a. Faster runoff
b. Reduced water retention
c. Lower runoff velocity and better seed germination
d. Higher erosion rates
Correct answer: c
If an area on a slope is still eroding excessively one year after permanent
stabilization, the inspector must ensure:
a. Regrading is completed
b. The project is shut down
c. Additional slope stabilization measures are installed
d. Natural recovery is allowed
Correct answer: c
Concentrated runoff may flow down a cut or fill slope only when:
a. The slope has grass
b. Runoff is less than 2 cfs
c. It is contained within a channel, flume, or slope drain
d. It is directed toward a wooded area
Correct answer: c
The primary purpose of a slope drain is to:
a. Improve aesthetics
b. Direct water uphill
c. Safely convey concentrated runoff down a slope without causing erosion
ANSWERS WITH RATIONALES LATEST ALREADY GRADED A+ |
2025/2026
Which entity is responsible for administering the Virginia Erosion and Sediment
Control Program (VESCP)?
a. U.S. EPA
b. Counties and cities (required), towns (optional)
c. Private landowners
d. The federal government
Answer: b
Rationale: Counties and cities must administer VESCP; towns may administer it.
The Federal Water Pollution Control Act was first passed in:
a. 1920
b. 1958
c. 1948
d. 1972
Correct answer: 1948
Rationale: This was the first major U.S. water pollution law; major amendments in
1972 created the Clean Water Act.
A certificate of competence issued by DEQ is valid for:
a. 1 year
b. 2 years
c. 3 years
d. 5 years
Correct answer: 3 years
A disturbance of 2,500 sq ft requires ESC compliance if it occurs in:
a. A forest
b. Chesapeake Bay Preservation Areas
c. A federal project
d. A commercial zone
Answer: b
Rationale: VESCP applies to activities ≥2,500 sq ft in Chesapeake Bay
Preservation Areas
,Permanent vegetation is considered established only when:
a. It reaches 50% coverage
b. It is planted
c. It is uniform, mature enough to survive, and will inhibit erosion
d. It germinates within 7 days
Answer: c
Rationale: MS-3 requires that permanent vegetation be uniform, mature enough to
survive, and capable of inhibiting erosion before it is considered established.
Simply planting or partial coverage is insufficient.
Which agency issues 404 permits for work in wetlands and streams?
a. DEQ
b. DGIF
c. VMRC
d. U.S. Army Corps of Engineers
Answer: d U.S. Army Corps of Engineers
The most erosive rainfall in Virginia occurs during:
a. November–January
b. February–April
c. May–September
d. December only
Correct answer: May–September
A Stop Work Order can be issued WITHOUT a Notice to Comply when:
a. The inspector is unavailable
b. The plan was partially approved
c. The LDA started without an approved ESC plan or permits
d. The contractor requests one
Correct answer: c
Minimum Standard 3 is primarily used by inspectors to verify:
a. Pipe sizing
b. Grading accuracy
c. Eligibility for bond or surety release
d. Sediment basin capacity
, Answer: c
Rationale: MS-3 provides the standard for determining whether a site has been
adequately stabilized with permanent vegetation so that bonds or sureties can be
released.
Sediment trapping devices should be installed at which point of construction?
a. At project completion
b. At the midpoint of grading
c. As a first-step measure
d. After vegetation is established
Correct answer: c
Rationale: MS-4 requires installation before major disturbance to capture sediment
early.
Roughening a slope surface results in which of the following?
a. Faster runoff
b. Reduced water retention
c. Lower runoff velocity and better seed germination
d. Higher erosion rates
Correct answer: c
If an area on a slope is still eroding excessively one year after permanent
stabilization, the inspector must ensure:
a. Regrading is completed
b. The project is shut down
c. Additional slope stabilization measures are installed
d. Natural recovery is allowed
Correct answer: c
Concentrated runoff may flow down a cut or fill slope only when:
a. The slope has grass
b. Runoff is less than 2 cfs
c. It is contained within a channel, flume, or slope drain
d. It is directed toward a wooded area
Correct answer: c
The primary purpose of a slope drain is to:
a. Improve aesthetics
b. Direct water uphill
c. Safely convey concentrated runoff down a slope without causing erosion
