VA DEQ ESC INSPECTOR EXAM
COMPLETE QUESTIONS WITH 100%
CORRECT ANSWERS
\.VESCP - ANSWERS-Virginia Erosion and Sediment Control Program
- Administered by counties/cities (must), towns (may)
- MUST BE APPROVED
\.Minimum Standard 1 - ANSWERS-Stabilization
permanent or temporary soil stabilization shall be applied to 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
\.Site NOT at Final Grade - ANSWERS-- stabilize in 14 days
- temporarily seed
- mulch
- permanently stabilize if dormant > 1 year
,\.Site at Final Grade - ANSWERS-- stabilize in 7 days (recommended immediately)
- permanently or temporarily seed and mulch
- mulch/matting/straw
\.Minimum Standard 2 - ANSWERS-Stock Piles, Waste and Borrow Areas
during construction, soil stock piles and 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
\.Minimum Standard 3 - ANSWERS-Permanent Vegetation
permanent vegetation cover shall be established on denuded areas not otherwise
permanently stabilized (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
\.Minimum Standard 4 - ANSWERS-First-Step Measures
,Sediment basins and traps, perimeter dikes, sediment barriers and other
measures intended to trap sediment shall be constructed as a first step in any
land-disturbing activity and shall 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
\.Perimeter Controls - 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 - 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 - 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 - 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 - 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 - ANSWERS-1. place near the lowest drainage points
of a project
2. install as a first-step measure [MS-4]
COMPLETE QUESTIONS WITH 100%
CORRECT ANSWERS
\.VESCP - ANSWERS-Virginia Erosion and Sediment Control Program
- Administered by counties/cities (must), towns (may)
- MUST BE APPROVED
\.Minimum Standard 1 - ANSWERS-Stabilization
permanent or temporary soil stabilization shall be applied to 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
\.Site NOT at Final Grade - ANSWERS-- stabilize in 14 days
- temporarily seed
- mulch
- permanently stabilize if dormant > 1 year
,\.Site at Final Grade - ANSWERS-- stabilize in 7 days (recommended immediately)
- permanently or temporarily seed and mulch
- mulch/matting/straw
\.Minimum Standard 2 - ANSWERS-Stock Piles, Waste and Borrow Areas
during construction, soil stock piles and 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
\.Minimum Standard 3 - ANSWERS-Permanent Vegetation
permanent vegetation cover shall be established on denuded areas not otherwise
permanently stabilized (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
\.Minimum Standard 4 - ANSWERS-First-Step Measures
,Sediment basins and traps, perimeter dikes, sediment barriers and other
measures intended to trap sediment shall be constructed as a first step in any
land-disturbing activity and shall 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
\.Perimeter Controls - 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 - 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 - 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 - 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 - 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 - ANSWERS-1. place near the lowest drainage points
of a project
2. install as a first-step measure [MS-4]
