EROSION AND SEDIMENT CONTROL
CERTIFICATION EXAM QUESTIONS AND
100% VERIFIED ANSWERS!!
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
a. woven slit film
Per the ASTM D-4355 test method, all geotextiles used in MD for erosion and sediment
control must have an ultraviolet retention strength rating of at least:
a. 70%
b. 95%
c. 60%
d. 50%
a. 70%
In determining a stone classification size, the stone must be a well graded mixture where
50% of the pieces by weight are below the weight of the midsize indicated as d50.
a. true
b. false
a. true
A local jurisdiction may have stricter requirements than the State for material
specifications.
a. true
b. false
a. true
,The minimum gauge wire for use in gabion baskets is:
a. 7
b. 12
c. 15
d. 11
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
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
b. 3, 7
Adequate vegetative cover requires __________ percent ground cover.
a. 50
b. 80
c. 95
d. 100
c. 95
, An earth dike must be stabilized within 3 days of installation.
a. true
b. false
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
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
c. 50 feet
The discharge from a SCE washrack should not be directed toward silt fence.
a. true
b. false
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
a. 20 feet
CERTIFICATION EXAM QUESTIONS AND
100% VERIFIED ANSWERS!!
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
a. woven slit film
Per the ASTM D-4355 test method, all geotextiles used in MD for erosion and sediment
control must have an ultraviolet retention strength rating of at least:
a. 70%
b. 95%
c. 60%
d. 50%
a. 70%
In determining a stone classification size, the stone must be a well graded mixture where
50% of the pieces by weight are below the weight of the midsize indicated as d50.
a. true
b. false
a. true
A local jurisdiction may have stricter requirements than the State for material
specifications.
a. true
b. false
a. true
,The minimum gauge wire for use in gabion baskets is:
a. 7
b. 12
c. 15
d. 11
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
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
b. 3, 7
Adequate vegetative cover requires __________ percent ground cover.
a. 50
b. 80
c. 95
d. 100
c. 95
, An earth dike must be stabilized within 3 days of installation.
a. true
b. false
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
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
c. 50 feet
The discharge from a SCE washrack should not be directed toward silt fence.
a. true
b. false
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
a. 20 feet
