Erosion and Sediment Control Exam Test Questions
and Answers
Minimum Standard 1 - -Stabilization considered established until a ground cover is
achieved that is uniform, mature enough to
permanent or temporary soil stabilization shall be survive, and will inhibit erosion *there is no %
applied to denuded areas within seven days after associated with this*)
final grade is reached on any portion of the site;
temporary soil stabilization shall be applied within reduce erosion and decrease sediment yield from
seven days to denuded areas that may not be at disturbed area
final grade but will remain dormant for longer
than 14 days; permanent stabilization shall be this is the standard used to verify that a site is
applied to areas that are to be left dormant for ready for release of bonds or surety
more than one year
Minimum Standard 4 - -First-Step
Site NOT at Final Grade - -- stabilize in 14 Measures
days
- temporarily seed Sediment basins and traps, perimeter dikes,
- mulch sediment barriers and other measures intended
- permanently stabilize if dormant > 1 year to trap sediment shall be constructed as a first
step in any land-disturbing activity and shall be
made functional before upslope land disturbance
Site at Final Grade - -- stabilize in 7 days takes place
(recommended immediately)
- permanently or temporarily seed and mulch a certain amount of initial land disturbance may
- mulch/matting/straw 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
Minimum Standard 2 - -Stock Piles, Waste
and Borrow Areas
intercepts and detains small amounts of sediment
from disturbed areas during construction
during construction, soil stock piles and borrow
operation to prevent sediment from leaving the
areas shall be stabilized or protected with
site and decrease velocity of sheet flows and low-
sediment trapping measures
to-moderate level channel flow
mulch prevents erosion by protecting the surface
from raindrop impact and silt fence intercepts
and detains from disturbed areas Perimeter Controls - -assures that
sediment does not leave the perimeter of the
land-disturbing area once site clearing, grading,
and construction commences
Minimum Standard 3 - -Permanent
Vegetation
Examples: silt fences, sediment traps, sediment
basins, construction entrance, temporary
permanent vegetation cover shall be established
diversions, diversions
on denuded areas not otherwise permanently
stabilized (permanent vegetation shall not be
, Erosion and Sediment Control Exam Test Questions
and Answers
Sediment Trapping Devises - -1. place
Minimum Standard 5 - -Earthen Structure near the lowest drainage points of a project
Stabilization
2. install as a first-step measure [MS-4]
stabilization measures shall be applied to
earthen structures such as dams, dikes, and 3. stabilize immediately [MS-5]
diversions immediately after installation
4. must include outlet protection for basins [MS-
reduce erosion and sedimentation and reduce 11]
damage from sediment and runoff to downstream
or off-site areas
Minimum Standard 7 - -Cut and Fill Slopes
Minimum Standard 6 - -Traps and Basins roughening the surface of the slope decreases
runoff, lowers the velocity runoff, increases water
sediment traps and basins shall be designed and retention, and leads to better seed germination
constructed based upon the total drainage area
(not just disturbed area) to be served by the trap slopes that are found to be eroding excessively
or basin within on year of permanent stabilization shall be
provided with additional slop stabilizing measures
until the problem is corrected
Sediment Traps - -minimum storage
capacity shall be 134 cubic yards per acre of
drainage area and shall only control drainage Minimum Standard 8 - -Concentrated
areas less than 3 acres Runoff
*stone outlet = trap* shall not flow down cut or fill slopes unless
contained within an adequate temporary or
permanent channel, flume or slope drain
Sediment Basins - -surface runoff from structure
disturbed areas that is comprised of flow from
drainage areas greater than or equal to 3 acres outlets of these drains need outlet protection to
shall be controlled by a basin; minimum storage prevent erosion from the concentrated flow
capacity of a sediment basin shall be 134 cubic
yards per acre of drainage area; the outfall size of pipe depends on drainage area
system shall, at a minimum, maintain the
structural integrity of the basin during a 25-year temporarily conduct concentrated stormwater
storm of 24-hour duration; runoff coefficients runoff safely down the face of a cut or fill slope
used in runoff calculations shall correspond to a without causing erosion on or below the slope
bare earth condition or those conditions
expected to exist while the sediment basin is
utilized. Minimum Standard 9 - -Water Seeps
whenever water seeps from a slope face,
and Answers
Minimum Standard 1 - -Stabilization considered established until a ground cover is
achieved that is uniform, mature enough to
permanent or temporary soil stabilization shall be survive, and will inhibit erosion *there is no %
applied to denuded areas within seven days after associated with this*)
final grade is reached on any portion of the site;
temporary soil stabilization shall be applied within reduce erosion and decrease sediment yield from
seven days to denuded areas that may not be at disturbed area
final grade but will remain dormant for longer
than 14 days; permanent stabilization shall be this is the standard used to verify that a site is
applied to areas that are to be left dormant for ready for release of bonds or surety
more than one year
Minimum Standard 4 - -First-Step
Site NOT at Final Grade - -- stabilize in 14 Measures
days
- temporarily seed Sediment basins and traps, perimeter dikes,
- mulch sediment barriers and other measures intended
- permanently stabilize if dormant > 1 year to trap sediment shall be constructed as a first
step in any land-disturbing activity and shall be
made functional before upslope land disturbance
Site at Final Grade - -- stabilize in 7 days takes place
(recommended immediately)
- permanently or temporarily seed and mulch a certain amount of initial land disturbance may
- mulch/matting/straw 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
Minimum Standard 2 - -Stock Piles, Waste
and Borrow Areas
intercepts and detains small amounts of sediment
from disturbed areas during construction
during construction, soil stock piles and borrow
operation to prevent sediment from leaving the
areas shall be stabilized or protected with
site and decrease velocity of sheet flows and low-
sediment trapping measures
to-moderate level channel flow
mulch prevents erosion by protecting the surface
from raindrop impact and silt fence intercepts
and detains from disturbed areas Perimeter Controls - -assures that
sediment does not leave the perimeter of the
land-disturbing area once site clearing, grading,
and construction commences
Minimum Standard 3 - -Permanent
Vegetation
Examples: silt fences, sediment traps, sediment
basins, construction entrance, temporary
permanent vegetation cover shall be established
diversions, diversions
on denuded areas not otherwise permanently
stabilized (permanent vegetation shall not be
, Erosion and Sediment Control Exam Test Questions
and Answers
Sediment Trapping Devises - -1. place
Minimum Standard 5 - -Earthen Structure near the lowest drainage points of a project
Stabilization
2. install as a first-step measure [MS-4]
stabilization measures shall be applied to
earthen structures such as dams, dikes, and 3. stabilize immediately [MS-5]
diversions immediately after installation
4. must include outlet protection for basins [MS-
reduce erosion and sedimentation and reduce 11]
damage from sediment and runoff to downstream
or off-site areas
Minimum Standard 7 - -Cut and Fill Slopes
Minimum Standard 6 - -Traps and Basins roughening the surface of the slope decreases
runoff, lowers the velocity runoff, increases water
sediment traps and basins shall be designed and retention, and leads to better seed germination
constructed based upon the total drainage area
(not just disturbed area) to be served by the trap slopes that are found to be eroding excessively
or basin within on year of permanent stabilization shall be
provided with additional slop stabilizing measures
until the problem is corrected
Sediment Traps - -minimum storage
capacity shall be 134 cubic yards per acre of
drainage area and shall only control drainage Minimum Standard 8 - -Concentrated
areas less than 3 acres Runoff
*stone outlet = trap* shall not flow down cut or fill slopes unless
contained within an adequate temporary or
permanent channel, flume or slope drain
Sediment Basins - -surface runoff from structure
disturbed areas that is comprised of flow from
drainage areas greater than or equal to 3 acres outlets of these drains need outlet protection to
shall be controlled by a basin; minimum storage prevent erosion from the concentrated flow
capacity of a sediment basin shall be 134 cubic
yards per acre of drainage area; the outfall size of pipe depends on drainage area
system shall, at a minimum, maintain the
structural integrity of the basin during a 25-year temporarily conduct concentrated stormwater
storm of 24-hour duration; runoff coefficients runoff safely down the face of a cut or fill slope
used in runoff calculations shall correspond to a without causing erosion on or below the slope
bare earth condition or those conditions
expected to exist while the sediment basin is
utilized. Minimum Standard 9 - -Water Seeps
whenever water seeps from a slope face,
