NPDES Level 1A Actual Exam | High-Yield
Questions & Answers, Regulations & Certification
Study Guide | Frequently Most Tested Questions
|Graded A+ ,Reviewed and Well Rationalized|
Latest Exam and Newest Version!!!
A slope gradient of 25% (4:1) would indicate that in a horizontal length of 100
feet, the vertical rise would be ______ feet.
A) 2.5
B) 12.5
C) 25
D) 4
ANS:<< C) 25
As rain falls to the earth, what is the very first function of vegetation?
A) It reduces detachment
B) It increases infiltration
C) It absorbs rain drop impact
D) Roots hold soil in place
ANS:<< A) It reduces detachment
Because of the likelihood of thunderstorms which is the worst month to
schedule land disturbing activities?
A) April
B) July
C) September
D) October
ANS:<< B) July
Which of the following is not a stage in Erosion and Sedimentation?
A) Detachment
B) Solubility
C) Transport
D) Deposition
,ANS:<< B) Solubility
At what depth must sediment be removed from a silt fence barrier?
A) 12 Inches
B) 16 Inches
C) 1/4 full
D) 1/2 full
ANS:<< D) 1/2 full
When straw mulch is used to cover disturbed soil it must be maintained at a
depth of ________ inches.
A) 1-2
B) 1-3
C) 2-3
D) 2-4
ANS:<< D) 2-4
If it is necessary to wash vehicle tires to remove excess sediment, the sediment
run-off must be:
A) Kept at the construction exit pad
B) Filtered with hay bales
C) Directed away from the road with a diversion
D) Directed into an approved sediment trap or sediment basin
ANS:<< C) Directed away from the road with a diversion
The maintenance requirements for all BMPs are only found in the Field Manual
for Erosion and Sediment Control in Georgia.
A) True
B) False
ANS:<< A) True
All land-disturbing activities covered by the E & SC Act must first secure a Land
Disturbing Activity (LDA) Permit. Who is responsible for obtaining this permit?
A) Design Engineer
B) Building Contractor
C) Owner/ Operator
D) Utility Subcontractor
ANS:<< C) Owner/ Operator
,If the local issuing authority's enforcement officer observed a significant amount
of sediment entering state waters from a land disturbing activity the officer
should do which of the following?
A) Issue a strongly worded Notice of Violation
B) Start proceedings for Forfeiture of Bonding
C) Move to revoke the company's business license
D) Issue a Stop Work Order
ANS:<< D) Issue a Stop Work Order
Spillway pipe for a temporary sediment basin cannot be constructed with a pipe
smaller than _____ inches.
A) 6
B) 8
C) 10
D) 12
ANS:<< B) 8
What is the amount of over fall allowed at the end of the storm drain outlet
apron?
A) 1/2 the diameter of the rip rap used
B) Not to exceed 6 inches
C) 1/2 the thickness of the apron
D) Zero
ANS:<< D) Zero
What size rocks should be used to fill gabion boxes?
A) 3 to 4 inches
B) 4 to 8 inches
C) Larger than 8 inches
D) Clean aggregate
ANS:<< C) Larger than 8 inches
A diversion constructed of compacted soil can be positioned ________ a slope.
A) Above
B) Across
C) Below
D) All of the above
ANS:<< B) Across
, A temporary sediment basin's riser pipe must be anchored with a concrete
foundation. The minimum thickness allowed for this foundation is ________
inches.
A) 12
B) 18
C) 24
D) 32
ANS:<< B) 18
A temporary down drain structure using a 12 inch pipe could drain up to
________ acres.
A) 0.3
B) 0.5
C) 0.4
D) 1.0
ANS:<< D) 1.0
A retrofit utilizing a slotted board dam can be used on projects with a larger
drainage area than a retrofit utilizing perforated half round pipe.
A) True
B) False
ANS:<< B) False
A stream channel diversion can only be constructed on streams with a drainage
area less than _________ acres.
A) 830
B) 725
C) 640
D) 500
ANS:<< C) 640
What may be used to construct a grade stabilization structure?
A) Rock
B) Cement
C) Wood
D) All of the above
ANS:<< D) All of the above
The apron for a storm drain outlet is designed to accommodate the storm water
flow but the minimum length is ______ times the outlet pipe diameter.
Questions & Answers, Regulations & Certification
Study Guide | Frequently Most Tested Questions
|Graded A+ ,Reviewed and Well Rationalized|
Latest Exam and Newest Version!!!
A slope gradient of 25% (4:1) would indicate that in a horizontal length of 100
feet, the vertical rise would be ______ feet.
A) 2.5
B) 12.5
C) 25
D) 4
ANS:<< C) 25
As rain falls to the earth, what is the very first function of vegetation?
A) It reduces detachment
B) It increases infiltration
C) It absorbs rain drop impact
D) Roots hold soil in place
ANS:<< A) It reduces detachment
Because of the likelihood of thunderstorms which is the worst month to
schedule land disturbing activities?
A) April
B) July
C) September
D) October
ANS:<< B) July
Which of the following is not a stage in Erosion and Sedimentation?
A) Detachment
B) Solubility
C) Transport
D) Deposition
,ANS:<< B) Solubility
At what depth must sediment be removed from a silt fence barrier?
A) 12 Inches
B) 16 Inches
C) 1/4 full
D) 1/2 full
ANS:<< D) 1/2 full
When straw mulch is used to cover disturbed soil it must be maintained at a
depth of ________ inches.
A) 1-2
B) 1-3
C) 2-3
D) 2-4
ANS:<< D) 2-4
If it is necessary to wash vehicle tires to remove excess sediment, the sediment
run-off must be:
A) Kept at the construction exit pad
B) Filtered with hay bales
C) Directed away from the road with a diversion
D) Directed into an approved sediment trap or sediment basin
ANS:<< C) Directed away from the road with a diversion
The maintenance requirements for all BMPs are only found in the Field Manual
for Erosion and Sediment Control in Georgia.
A) True
B) False
ANS:<< A) True
All land-disturbing activities covered by the E & SC Act must first secure a Land
Disturbing Activity (LDA) Permit. Who is responsible for obtaining this permit?
A) Design Engineer
B) Building Contractor
C) Owner/ Operator
D) Utility Subcontractor
ANS:<< C) Owner/ Operator
,If the local issuing authority's enforcement officer observed a significant amount
of sediment entering state waters from a land disturbing activity the officer
should do which of the following?
A) Issue a strongly worded Notice of Violation
B) Start proceedings for Forfeiture of Bonding
C) Move to revoke the company's business license
D) Issue a Stop Work Order
ANS:<< D) Issue a Stop Work Order
Spillway pipe for a temporary sediment basin cannot be constructed with a pipe
smaller than _____ inches.
A) 6
B) 8
C) 10
D) 12
ANS:<< B) 8
What is the amount of over fall allowed at the end of the storm drain outlet
apron?
A) 1/2 the diameter of the rip rap used
B) Not to exceed 6 inches
C) 1/2 the thickness of the apron
D) Zero
ANS:<< D) Zero
What size rocks should be used to fill gabion boxes?
A) 3 to 4 inches
B) 4 to 8 inches
C) Larger than 8 inches
D) Clean aggregate
ANS:<< C) Larger than 8 inches
A diversion constructed of compacted soil can be positioned ________ a slope.
A) Above
B) Across
C) Below
D) All of the above
ANS:<< B) Across
, A temporary sediment basin's riser pipe must be anchored with a concrete
foundation. The minimum thickness allowed for this foundation is ________
inches.
A) 12
B) 18
C) 24
D) 32
ANS:<< B) 18
A temporary down drain structure using a 12 inch pipe could drain up to
________ acres.
A) 0.3
B) 0.5
C) 0.4
D) 1.0
ANS:<< D) 1.0
A retrofit utilizing a slotted board dam can be used on projects with a larger
drainage area than a retrofit utilizing perforated half round pipe.
A) True
B) False
ANS:<< B) False
A stream channel diversion can only be constructed on streams with a drainage
area less than _________ acres.
A) 830
B) 725
C) 640
D) 500
ANS:<< C) 640
What may be used to construct a grade stabilization structure?
A) Rock
B) Cement
C) Wood
D) All of the above
ANS:<< D) All of the above
The apron for a storm drain outlet is designed to accommodate the storm water
flow but the minimum length is ______ times the outlet pipe diameter.
