Erosion and Sediment Control Certification exam verified with correct
answers 2026/2027 version
A local jurisdiction may have stricter requirements than the State for material
specifications.
a. true
b. false- answer>>>a. true
The minimum gauge wire for use in gabion baskets is:
a. 7
b. 12
c. 15
d. 11- answer>>>d. 11
The best way to prevent erosion is:
a. double up the silt fence
b. install a good working sediment trap
c. minimize the disturbed area and quickly re-establish vegetative cover
d. schedule construction when rain is not forecasted- answer>>>c. minimize the
disturbed area and quickly re-establish vegetative cover
Following initial soil disturbance or re-disturbance, permanent or temporary stabilization
must be completed within __________ calendar days for all perimeter dikes, swales,
ditches, perimeter slopes, and all slopes steeper than 3:1; and __________ calendar
days for all other disturbed or graded areas on the project site not under active grading.
a. 1, 2
b. 3, 7
c. 7, 14
d. 14, 21- answer>>>b. 3, 7
Adequate vegetative cover requires __________ percent ground cover.
a. 50
b. 80
c. 95
d. 100- answer>>>c. 95
An earth dike must be stabilized within 3 days of installation.
a. true
b. false- answer>>>a. true
A stabilized construction entrance:
a. is made up of Class I riprap or equivalent recycled concrete
b. uses nonwoven geotextile underneath the stone/recycled concrete
c. should slope toward the exterior of the site so runoff from SCE flows offsite
, d. none of the above- answer>>>b. uses nonwoven geotextile underneath the
stone/recycled concrete
Other than for a single-family home the minimum length of a stabilized construction
entrance is:
a. 25 feet
b. 30 feet
c. 50 feet
d. 60 feet- answer>>>c. 50 feet
The discharge from a SCE washrack should not be directed toward silt fence.
a. true
b. false- answer>>>a. true
Benching is required on a slope steeper than 2:1 if its height is greater than:
a. 20 feet
b. 30 feet
c. 45 feet
d. 50 feet- answer>>>a. 20 feet
The primary purpose of benching or serrated slopes is to:
a. provide additional area for landscaping
b. break up the surface flow of runoff on long steep slopes
c. provide a level area for wildlife crossing
d. none of the above- answer>>>b. break up the surface flow of runoff on long steep
slopes
Temporary stabilization is not required during the winter.
a. true
b. false- answer>>>b. false
Incremental stabilization should occur for every __________ feet of cut or fill.
a. 5
b. 15
c. 30
d. 35- answer>>>b. 15
Topsoiling is always required when permanently stabilizing an area.
a. true
b. false- answer>>>b. false
The following type of material is used in the installation of silt fence and super silt fence:
a. woven slit film
b. woven monofilament
c. nonwoven
d. none of the above- answer>>>a. woven slit film
answers 2026/2027 version
A local jurisdiction may have stricter requirements than the State for material
specifications.
a. true
b. false- answer>>>a. true
The minimum gauge wire for use in gabion baskets is:
a. 7
b. 12
c. 15
d. 11- answer>>>d. 11
The best way to prevent erosion is:
a. double up the silt fence
b. install a good working sediment trap
c. minimize the disturbed area and quickly re-establish vegetative cover
d. schedule construction when rain is not forecasted- answer>>>c. minimize the
disturbed area and quickly re-establish vegetative cover
Following initial soil disturbance or re-disturbance, permanent or temporary stabilization
must be completed within __________ calendar days for all perimeter dikes, swales,
ditches, perimeter slopes, and all slopes steeper than 3:1; and __________ calendar
days for all other disturbed or graded areas on the project site not under active grading.
a. 1, 2
b. 3, 7
c. 7, 14
d. 14, 21- answer>>>b. 3, 7
Adequate vegetative cover requires __________ percent ground cover.
a. 50
b. 80
c. 95
d. 100- answer>>>c. 95
An earth dike must be stabilized within 3 days of installation.
a. true
b. false- answer>>>a. true
A stabilized construction entrance:
a. is made up of Class I riprap or equivalent recycled concrete
b. uses nonwoven geotextile underneath the stone/recycled concrete
c. should slope toward the exterior of the site so runoff from SCE flows offsite
, d. none of the above- answer>>>b. uses nonwoven geotextile underneath the
stone/recycled concrete
Other than for a single-family home the minimum length of a stabilized construction
entrance is:
a. 25 feet
b. 30 feet
c. 50 feet
d. 60 feet- answer>>>c. 50 feet
The discharge from a SCE washrack should not be directed toward silt fence.
a. true
b. false- answer>>>a. true
Benching is required on a slope steeper than 2:1 if its height is greater than:
a. 20 feet
b. 30 feet
c. 45 feet
d. 50 feet- answer>>>a. 20 feet
The primary purpose of benching or serrated slopes is to:
a. provide additional area for landscaping
b. break up the surface flow of runoff on long steep slopes
c. provide a level area for wildlife crossing
d. none of the above- answer>>>b. break up the surface flow of runoff on long steep
slopes
Temporary stabilization is not required during the winter.
a. true
b. false- answer>>>b. false
Incremental stabilization should occur for every __________ feet of cut or fill.
a. 5
b. 15
c. 30
d. 35- answer>>>b. 15
Topsoiling is always required when permanently stabilizing an area.
a. true
b. false- answer>>>b. false
The following type of material is used in the installation of silt fence and super silt fence:
a. woven slit film
b. woven monofilament
c. nonwoven
d. none of the above- answer>>>a. woven slit film
