NPDES LEVEL 1A PRACTICE TEST
QUESTIONS AND ANSWERS
A slope gradient of 25% (4:1) would indicate that in a horizontal length of 100 feet, the vertic
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
al rise would be ______ feet.
sq sq sq sq sq
A) 2.5 sq
B) 12.5sq
C) 25 sq
D) 4 - ans-C) 25
sq sq sq sq
As rain falls to the earth, what is the very first function of vegetation?
sq sq sq sq sq sq sq sq sq sq sq sq sq
A) It reduces detachment
sq sq sq
B) It increases infiltration
sq sq sq
C) It absorbs rain drop impact
sq sq sq sq sq
D) Roots hold soil in place - ans-A) It reduces detachment
sq sq sq sq sq sq sq sq sq sq
Because of the likelihood of thunderstorms which is the worst month to schedule land distur
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
bing activities? sq
A) April
sq
B) Julysq
C) September
sq
D) October - ans-B) July
sq sq sq sq
Which of the following is not a stage in Erosion and Sedimentation?
sq sq sq sq sq sq sq sq sq sq sq
A) Detachment
sq
B) Solubility
sq
C) Transport
sq
D) Deposition - ans-B) Solubility
sq sq sq sq
At what depth must sediment be removed from a silt fence barrier?
sq sq sq sq sq sq sq sq sq sq sq
A) 12 Inches
sq sq
B) 16 Inches
sq sq
C) 1/4 full
sq sq
D) 1/2 full - ans-D) 1/2 full
sq sq sq sq sq sq
When straw mulch is used to cover disturbed soil it must be maintained at a depth of _____
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
___ inches. sq
A) 1-2 sq
B) 1-3 sq
C) 2-3 sq
D) 2-4 - ans-D) 2-4
sq sq sq sq
, If it is necessary to wash vehicle tires to remove excess sediment, the sediment run-
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
off must be:
sq sq
A) Kept at the construction exit pad
sq sq sq sq sq sq
B) Filtered with hay bales
sq sq sq sq
C) Directed away from the road with a diversion
sq sq sq sq sq sq sq sq
D) Directed into an approved sediment trap or sediment basin - ans-
sq sq sq sq sq sq sq sq sq sq sq
C) Directed away from the road with a diversion
sq sq sq sq sq sq sq sq
The maintenance requirements for all BMPs are only found in the Field Manual for Erosion
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
and Sediment Control in Georgia.
sq sq sq sq
A) Truesq
B) False - ans-A) True
sq sq sq sq
All land- sq
disturbing activities covered by the E & SC Act must first secure a Land Disturbing Activity (
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
LDA) Permit. Who is responsible for obtaining this permit?
sq sq sq sq sq sq sq sq
A) Design Engineer
sq sq
B) Building Contractor
sq sq
C) Owner/ Operator
sq sq
D) Utility Subcontractor - ans-C) Owner/ Operator
sq sq sq sq sq sq
If the local issuing authority's enforcement officer observed a significant amount of sedime
sq sq sq sq sq sq sq sq sq sq sq sq
nt entering state waters from a land disturbing activity the officer should do which of the foll
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
owing?
A) Issue a strongly worded Notice of Violation
sq sq sq sq sq sq sq
B) Start proceedings for Forfeiture of Bonding
sq sq sq sq sq sq
C) Move to revoke the company's business license
sq sq sq sq sq sq sq
D) Issue a Stop Work Order - ans-D) Issue a Stop Work Order
sq sq sq sq sq sq sq sq sq sq sq sq
Spillway pipe for a temporary sediment basin cannot be constructed with a pipe smaller tha
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
n _____ inches.
sq sq
A) 6 sq
B) 8 sq
C) 10 sq
D) 12 - ans-B) 8
sq sq sq sq
What is the amount of over fall allowed at the end of the storm drain outlet apron?
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
A) 1/2 the diameter of the rip rap used
sq sq sq sq sq sq sq sq
B) Not to exceed 6 inches
sq sq sq sq sq
C) 1/2 the thickness of the apron
sq sq sq sq sq sq
D) Zero - ans-D) Zero
sq sq sq sq
What size rocks should be used to fill gabion boxes?
sq sq sq sq sq sq sq sq sq
A) 3 to 4 inches
sq sq sq sq
B) 4 to 8 inches
sq sq sq sq
C) Larger than 8 inches
sq sq sq sq
QUESTIONS AND ANSWERS
A slope gradient of 25% (4:1) would indicate that in a horizontal length of 100 feet, the vertic
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
al rise would be ______ feet.
sq sq sq sq sq
A) 2.5 sq
B) 12.5sq
C) 25 sq
D) 4 - ans-C) 25
sq sq sq sq
As rain falls to the earth, what is the very first function of vegetation?
sq sq sq sq sq sq sq sq sq sq sq sq sq
A) It reduces detachment
sq sq sq
B) It increases infiltration
sq sq sq
C) It absorbs rain drop impact
sq sq sq sq sq
D) Roots hold soil in place - ans-A) It reduces detachment
sq sq sq sq sq sq sq sq sq sq
Because of the likelihood of thunderstorms which is the worst month to schedule land distur
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
bing activities? sq
A) April
sq
B) Julysq
C) September
sq
D) October - ans-B) July
sq sq sq sq
Which of the following is not a stage in Erosion and Sedimentation?
sq sq sq sq sq sq sq sq sq sq sq
A) Detachment
sq
B) Solubility
sq
C) Transport
sq
D) Deposition - ans-B) Solubility
sq sq sq sq
At what depth must sediment be removed from a silt fence barrier?
sq sq sq sq sq sq sq sq sq sq sq
A) 12 Inches
sq sq
B) 16 Inches
sq sq
C) 1/4 full
sq sq
D) 1/2 full - ans-D) 1/2 full
sq sq sq sq sq sq
When straw mulch is used to cover disturbed soil it must be maintained at a depth of _____
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
___ inches. sq
A) 1-2 sq
B) 1-3 sq
C) 2-3 sq
D) 2-4 - ans-D) 2-4
sq sq sq sq
, If it is necessary to wash vehicle tires to remove excess sediment, the sediment run-
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
off must be:
sq sq
A) Kept at the construction exit pad
sq sq sq sq sq sq
B) Filtered with hay bales
sq sq sq sq
C) Directed away from the road with a diversion
sq sq sq sq sq sq sq sq
D) Directed into an approved sediment trap or sediment basin - ans-
sq sq sq sq sq sq sq sq sq sq sq
C) Directed away from the road with a diversion
sq sq sq sq sq sq sq sq
The maintenance requirements for all BMPs are only found in the Field Manual for Erosion
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
and Sediment Control in Georgia.
sq sq sq sq
A) Truesq
B) False - ans-A) True
sq sq sq sq
All land- sq
disturbing activities covered by the E & SC Act must first secure a Land Disturbing Activity (
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
LDA) Permit. Who is responsible for obtaining this permit?
sq sq sq sq sq sq sq sq
A) Design Engineer
sq sq
B) Building Contractor
sq sq
C) Owner/ Operator
sq sq
D) Utility Subcontractor - ans-C) Owner/ Operator
sq sq sq sq sq sq
If the local issuing authority's enforcement officer observed a significant amount of sedime
sq sq sq sq sq sq sq sq sq sq sq sq
nt entering state waters from a land disturbing activity the officer should do which of the foll
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
owing?
A) Issue a strongly worded Notice of Violation
sq sq sq sq sq sq sq
B) Start proceedings for Forfeiture of Bonding
sq sq sq sq sq sq
C) Move to revoke the company's business license
sq sq sq sq sq sq sq
D) Issue a Stop Work Order - ans-D) Issue a Stop Work Order
sq sq sq sq sq sq sq sq sq sq sq sq
Spillway pipe for a temporary sediment basin cannot be constructed with a pipe smaller tha
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
n _____ inches.
sq sq
A) 6 sq
B) 8 sq
C) 10 sq
D) 12 - ans-B) 8
sq sq sq sq
What is the amount of over fall allowed at the end of the storm drain outlet apron?
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
A) 1/2 the diameter of the rip rap used
sq sq sq sq sq sq sq sq
B) Not to exceed 6 inches
sq sq sq sq sq
C) 1/2 the thickness of the apron
sq sq sq sq sq sq
D) Zero - ans-D) Zero
sq sq sq sq
What size rocks should be used to fill gabion boxes?
sq sq sq sq sq sq sq sq sq
A) 3 to 4 inches
sq sq sq sq
B) 4 to 8 inches
sq sq sq sq
C) Larger than 8 inches
sq sq sq sq
