4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
VA DEQ ESC INSPECTOR EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
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Terms in this set (104)
Virginia Erosion and Sediment Control
Program
VESCP
- Administered by counties/cities (must), towns
(may)
- MUST BE APPROVED
Stabilization
permanent or temporary soil
stabilization shall be applied to
Minimum Standard 1
denuded areas within seven days after
final grade is reached on any portion of
the site; temporary soil stabilization
shall be applied within seven days to
denuded areas that may not be at final
grade but will remain dormant for
longer than 14 days; permanent
stabilization shall be applied to areas
that are to be left dormant for more
than one year
- stabilize in 14 days
- temporarily seed
Site NOT at Final
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,4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
Grade - mulch
- permanently stabilize if dormant > 1 year
- stabilize in 7 days (recommended
Site at Final Grade immediately)
- permanently or temporarily seed and mulch
- mulch/matting/straw
Stock Piles, Waste and Borrow Areas
during construction, soil stock piles and
Minimum Standard 2 borrow areas shall be stabilized or
protected with sediment trapping
measures
mulch prevents erosion by protecting
the surface from raindrop impact and
silt fence intercepts and detains from
disturbed areas
Permanent Vegetation
permanent vegetation cover shall be
established on denuded areas not
otherwise permanently stabilized
Minimum Standard 3 (permanent vegetation shall not be
considered established until a ground
cover is achieved that is uniform, mature
enough to survive, and will inhibit
erosion there is no % associated with
this)
reduce erosion and decrease sediment yield
from disturbed area
this is the standard used to verify that a site is
ready for release of bonds or surety
First-Step Measures
Sediment basins and traps, perimeter
2/39
,4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
dikes, sediment barriers and other
measures intended to trap sediment
shall be constructed as a first step in
any land- disturbing activity and shall
Minimum Standard 4 be made functional before upslope land
disturbance takes place
a certain amount of initial land
disturbance may be required to provide
access for equipment to install the
perimeter controls, but site clearing and
grading should be kept to a minimum
until the perimeter controls are in place
intercepts and detains small amounts of
sediment from disturbed areas during
construction operation to prevent
sediment from leaving the site and
decrease velocity of sheet flows and
low-to-moderate level channel flow
assures that sediment does not leave
the perimeter of the land-disturbing
Perimeter Controls area once site clearing, grading, and
construction commences
Examples: silt fences, sediment traps,
sediment basins, construction entrance,
temporary diversions, diversions
Earthen Structure Stabilization
stabilization measures shall be applied to
Minimum Standard 5 earthen structures such as dams, dikes,
and diversions immediately after
installation
reduce erosion and sedimentation and
3/39
, 4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
reduce damage from sediment and
runoff to downstream or off-site areas
Traps and Basins
Minimum Standard 6 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
minimum storage capacity shall be 134
cubic yards per acre of drainage area
Sediment Traps
and shall only control drainage areas
less than 3 acres
stone outlet = trap
surface runoff from disturbed areas that
is comprised of flow from drainage
areas greater than or equal to 3 acres
Sediment Basins 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.
1. place near the lowest drainage points of a
project
2. install as a first-step measure [MS-4]
Sediment Trapping
Devises
4/39
AM
VA DEQ ESC INSPECTOR EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
Leave the first rating
Save
Terms in this set (104)
Virginia Erosion and Sediment Control
Program
VESCP
- Administered by counties/cities (must), towns
(may)
- MUST BE APPROVED
Stabilization
permanent or temporary soil
stabilization shall be applied to
Minimum Standard 1
denuded areas within seven days after
final grade is reached on any portion of
the site; temporary soil stabilization
shall be applied within seven days to
denuded areas that may not be at final
grade but will remain dormant for
longer than 14 days; permanent
stabilization shall be applied to areas
that are to be left dormant for more
than one year
- stabilize in 14 days
- temporarily seed
Site NOT at Final
1/39
,4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
Grade - mulch
- permanently stabilize if dormant > 1 year
- stabilize in 7 days (recommended
Site at Final Grade immediately)
- permanently or temporarily seed and mulch
- mulch/matting/straw
Stock Piles, Waste and Borrow Areas
during construction, soil stock piles and
Minimum Standard 2 borrow areas shall be stabilized or
protected with sediment trapping
measures
mulch prevents erosion by protecting
the surface from raindrop impact and
silt fence intercepts and detains from
disturbed areas
Permanent Vegetation
permanent vegetation cover shall be
established on denuded areas not
otherwise permanently stabilized
Minimum Standard 3 (permanent vegetation shall not be
considered established until a ground
cover is achieved that is uniform, mature
enough to survive, and will inhibit
erosion there is no % associated with
this)
reduce erosion and decrease sediment yield
from disturbed area
this is the standard used to verify that a site is
ready for release of bonds or surety
First-Step Measures
Sediment basins and traps, perimeter
2/39
,4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
dikes, sediment barriers and other
measures intended to trap sediment
shall be constructed as a first step in
any land- disturbing activity and shall
Minimum Standard 4 be made functional before upslope land
disturbance takes place
a certain amount of initial land
disturbance may be required to provide
access for equipment to install the
perimeter controls, but site clearing and
grading should be kept to a minimum
until the perimeter controls are in place
intercepts and detains small amounts of
sediment from disturbed areas during
construction operation to prevent
sediment from leaving the site and
decrease velocity of sheet flows and
low-to-moderate level channel flow
assures that sediment does not leave
the perimeter of the land-disturbing
Perimeter Controls area once site clearing, grading, and
construction commences
Examples: silt fences, sediment traps,
sediment basins, construction entrance,
temporary diversions, diversions
Earthen Structure Stabilization
stabilization measures shall be applied to
Minimum Standard 5 earthen structures such as dams, dikes,
and diversions immediately after
installation
reduce erosion and sedimentation and
3/39
, 4/26/25, 9:36 VA DEQ ESC Inspector Exam Flashcards |
AM
reduce damage from sediment and
runoff to downstream or off-site areas
Traps and Basins
Minimum Standard 6 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
minimum storage capacity shall be 134
cubic yards per acre of drainage area
Sediment Traps
and shall only control drainage areas
less than 3 acres
stone outlet = trap
surface runoff from disturbed areas that
is comprised of flow from drainage
areas greater than or equal to 3 acres
Sediment Basins 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.
1. place near the lowest drainage points of a
project
2. install as a first-step measure [MS-4]
Sediment Trapping
Devises
4/39
