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DEQ- STORMWATER MANGEMENT
INSPECTOR EXAM QUESTIONS AND
ANSWERS 2025
What two plans in the SWPPP must be approved? - correct
answer- Erosion and sediment control plans and stormwater
management plans must be approved.
Does the stormwater management plan address runoff during
construction or after? - correct answer- The stormwater
management plan addresses post-construction stormwater
runoff.
What impact does impervious cover have on water quality? -
correct answer- Impervious cover increases stormwater runoff
volume and velocity, leading to higher pollutant levels like
sediment and phosphorus, negatively affecting water quality.
What is the target pollutant in the water quality criteria? -
correct answer- Phosphorus
What is the lower limit of imperviousness that can result in
stream degradation? - correct answer- 10%
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What destructive forces does the SWM regulation protect
against? - correct answer- Channel erosion and flooding.
How does the rate of runoff change after development? -
correct answer- Runoff rate increases post-development due to
vegetation replacement with impervious surfaces, potentially
causing erosion and flooding.
What must a locality's ordinance require for submission and
approval? - correct answer- ESC plan and SWM plan (9VAC25-
870-148)
List three violations for which a penalty may be imposed. -
correct answer- Violations include: No registration date, No
SWPPP, Incomplete SWPPP, SWPPP not available for review,
No approved ESC plan, Failure to install stormwater
management BMPs or ESCs, Improperly installed or
maintained stormwater BMPs or ESCs, Operational
deficiencies, Failure to conduct required inspections,
Incomplete, improper, or missed inspections.
Maximum Penalty under the Stormwater Act - correct answer-
$32,500
DEQ- STORMWATER MANGEMENT
INSPECTOR EXAM QUESTIONS AND
ANSWERS 2025
What two plans in the SWPPP must be approved? - correct
answer- Erosion and sediment control plans and stormwater
management plans must be approved.
Does the stormwater management plan address runoff during
construction or after? - correct answer- The stormwater
management plan addresses post-construction stormwater
runoff.
What impact does impervious cover have on water quality? -
correct answer- Impervious cover increases stormwater runoff
volume and velocity, leading to higher pollutant levels like
sediment and phosphorus, negatively affecting water quality.
What is the target pollutant in the water quality criteria? -
correct answer- Phosphorus
What is the lower limit of imperviousness that can result in
stream degradation? - correct answer- 10%
, 2 | Page
What destructive forces does the SWM regulation protect
against? - correct answer- Channel erosion and flooding.
How does the rate of runoff change after development? -
correct answer- Runoff rate increases post-development due to
vegetation replacement with impervious surfaces, potentially
causing erosion and flooding.
What must a locality's ordinance require for submission and
approval? - correct answer- ESC plan and SWM plan (9VAC25-
870-148)
List three violations for which a penalty may be imposed. -
correct answer- Violations include: No registration date, No
SWPPP, Incomplete SWPPP, SWPPP not available for review,
No approved ESC plan, Failure to install stormwater
management BMPs or ESCs, Improperly installed or
maintained stormwater BMPs or ESCs, Operational
deficiencies, Failure to conduct required inspections,
Incomplete, improper, or missed inspections.
Maximum Penalty under the Stormwater Act - correct answer-
$32,500
