VA DEQ ESC INSPECTOR EXAM NEWEST EXAM / VA DEQ ESC
INSPECTOR EXAM PREPARATION/VA DEQ ESC INSPECTOR
PRACTICE EXAM WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS| BRAND NEW VERSION!
Perimeter Controls - CORRECT ANSWERS-assures that sediment does not leave the perimeter
of the land-disturbing area once site clearing, grading, and construction commences
Examples: silt fences, sediment traps, sediment basins, construction entrance, temporary diversions,
diversions
Minimum Standard 5 - CORRECT ANSWERS-Earthen Structure Stabilization
stabilization measures shall be applied to earthen structures such as dams, dikes, and diversions
immediately after installation
reduce erosion and sedimentation and reduce damage from sediment and runoff to downstream or off-
site areas
Minimum Standard 6 - CORRECT ANSWERS-Traps and Basins
sediment traps and basins shall be designed and constructed based upon the total drainage area (not
just disturbed area) to be served by the trap or basin
Sediment Traps - CORRECT ANSWERS-minimum storage capacity shall be 134 cubic yards per
acre of drainage area and shall only control drainage areas less than 3 acres
*stone outlet = trap*
Sediment Basins - CORRECT ANSWERS-surface runoff from disturbed areas that is comprised
of flow from drainage areas greater than or equal to 3 acres shall be controlled by a basin; minimum
storage capacity of a sediment basin shall be 134 cubic yards per acre of drainage area; the outfall
,system shall, at a minimum, maintain the structural integrity of the basin during a 25-year storm of 24-
hour duration; runoff coefficients used in runoff calculations shall correspond to a bare earth condition
or those conditions expected to exist while the sediment basin is utilized.
Sediment Trapping Devises - CORRECT ANSWERS-1. place near the lowest drainage points of
a project
2. install as a first-step measure [MS-4]
3. stabilize immediately [MS-5]
4. must include outlet protection for basins [MS-11]
Minimum Standard 7 - CORRECT ANSWERS-Cut and Fill Slopes
roughening the surface of the slope decreases runoff, lowers the velocity runoff, increases water
retention, and leads to better seed germination
slopes that are found to be eroding excessively within on year of permanent stabilization shall be
provided with additional slop stabilizing measures until the problem is corrected
Minimum Standard 8 - CORRECT ANSWERS-Concentrated Runoff
shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent
channel, flume or slope drain structure
outlets of these drains need outlet protection to prevent erosion from the concentrated flow
size of pipe depends on drainage area
, temporarily conduct concentrated stormwater runoff safely down the face of a cut or fill slope without
causing erosion on or below the slope
Minimum Standard 9 - CORRECT ANSWERS-Water Seeps
whenever water seeps from a slope face, adequate drainage or other protection shall be provided
cut and fill operations may expose shallow aquifers or groundwater tables from which water may seep
through the side of a slope
Minimum Standard 10 - CORRECT ANSWERS-Inlet Protection
all storm sewer inlets that are made operable during construction shall be protected so that sediment-
laden water cannot enter the conveyance system without first being filtered or otherwise treated to
remove sediment
storm sewers are designed to efficiently transport stormwater away from the site, so when sediment
enters the storm sewer system, two negative effects can occur:
1. when velocity of flow is high, much of the sediment will be quickly transported to the nearest
receiving channel
2. when velocity of the flow is low, the sediment may be deposited in the pipes resulting in clogging and
potential flooding of a site during storm events
prevents sediment from entering storm drainage systems prior to permanent stabilization of the
disturbed area
Silt Fence Drop Inlet Protection vs. Block and Gravel Drop Inlet Sediment Filter - CORRECT
ANSWERS-Block and gravel drop inlet - will have to clean out regularly but won't get damaged.
Minimum Standard 11 - CORRECT ANSWERS-Outlet Protection
INSPECTOR EXAM PREPARATION/VA DEQ ESC INSPECTOR
PRACTICE EXAM WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS| BRAND NEW VERSION!
Perimeter Controls - CORRECT ANSWERS-assures that sediment does not leave the perimeter
of the land-disturbing area once site clearing, grading, and construction commences
Examples: silt fences, sediment traps, sediment basins, construction entrance, temporary diversions,
diversions
Minimum Standard 5 - CORRECT ANSWERS-Earthen Structure Stabilization
stabilization measures shall be applied to earthen structures such as dams, dikes, and diversions
immediately after installation
reduce erosion and sedimentation and reduce damage from sediment and runoff to downstream or off-
site areas
Minimum Standard 6 - CORRECT ANSWERS-Traps and Basins
sediment traps and basins shall be designed and constructed based upon the total drainage area (not
just disturbed area) to be served by the trap or basin
Sediment Traps - CORRECT ANSWERS-minimum storage capacity shall be 134 cubic yards per
acre of drainage area and shall only control drainage areas less than 3 acres
*stone outlet = trap*
Sediment Basins - CORRECT ANSWERS-surface runoff from disturbed areas that is comprised
of flow from drainage areas greater than or equal to 3 acres shall be controlled by a basin; minimum
storage capacity of a sediment basin shall be 134 cubic yards per acre of drainage area; the outfall
,system shall, at a minimum, maintain the structural integrity of the basin during a 25-year storm of 24-
hour duration; runoff coefficients used in runoff calculations shall correspond to a bare earth condition
or those conditions expected to exist while the sediment basin is utilized.
Sediment Trapping Devises - CORRECT ANSWERS-1. place near the lowest drainage points of
a project
2. install as a first-step measure [MS-4]
3. stabilize immediately [MS-5]
4. must include outlet protection for basins [MS-11]
Minimum Standard 7 - CORRECT ANSWERS-Cut and Fill Slopes
roughening the surface of the slope decreases runoff, lowers the velocity runoff, increases water
retention, and leads to better seed germination
slopes that are found to be eroding excessively within on year of permanent stabilization shall be
provided with additional slop stabilizing measures until the problem is corrected
Minimum Standard 8 - CORRECT ANSWERS-Concentrated Runoff
shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent
channel, flume or slope drain structure
outlets of these drains need outlet protection to prevent erosion from the concentrated flow
size of pipe depends on drainage area
, temporarily conduct concentrated stormwater runoff safely down the face of a cut or fill slope without
causing erosion on or below the slope
Minimum Standard 9 - CORRECT ANSWERS-Water Seeps
whenever water seeps from a slope face, adequate drainage or other protection shall be provided
cut and fill operations may expose shallow aquifers or groundwater tables from which water may seep
through the side of a slope
Minimum Standard 10 - CORRECT ANSWERS-Inlet Protection
all storm sewer inlets that are made operable during construction shall be protected so that sediment-
laden water cannot enter the conveyance system without first being filtered or otherwise treated to
remove sediment
storm sewers are designed to efficiently transport stormwater away from the site, so when sediment
enters the storm sewer system, two negative effects can occur:
1. when velocity of flow is high, much of the sediment will be quickly transported to the nearest
receiving channel
2. when velocity of the flow is low, the sediment may be deposited in the pipes resulting in clogging and
potential flooding of a site during storm events
prevents sediment from entering storm drainage systems prior to permanent stabilization of the
disturbed area
Silt Fence Drop Inlet Protection vs. Block and Gravel Drop Inlet Sediment Filter - CORRECT
ANSWERS-Block and gravel drop inlet - will have to clean out regularly but won't get damaged.
Minimum Standard 11 - CORRECT ANSWERS-Outlet Protection
