Page 1 of 19
NPDES LEVEL 1A TEST*** (BMPS, SOIL
EROSION, SEDIMENT CONTROL, PERMIT
RULES & GEORGIA STATE COMPLIANCE)
QUESTIONS AND VERIFIED ANSWERS |
2026/2027 UPDATE
A buffer zone is required along the banks of state waters. How
is it determined where to measure from on the stream bank?
A) From the center of the channel
B) From the area of wrested vegetation
C) From the area adjacent to the stream that is subject to
overflow, as indicated by water loving plants
D) From the water side edge of plants growing in the water
❖ B) From the area of wrested vegetation
A diversion constructed of compacted soil can be positioned
________ a slope.
A) Above
,Page 2 of 19
B) Across
C) Below
D) All of the above
❖ 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
❖ B) 18
A temporary down drain structure using a 12 inch pipe could
drain up to ________ acres.
A) 0.3
B) 0.5
, Page 3 of 19
C) 0.4
D) 1.0
❖ 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
❖ 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
❖ C) 640
NPDES LEVEL 1A TEST*** (BMPS, SOIL
EROSION, SEDIMENT CONTROL, PERMIT
RULES & GEORGIA STATE COMPLIANCE)
QUESTIONS AND VERIFIED ANSWERS |
2026/2027 UPDATE
A buffer zone is required along the banks of state waters. How
is it determined where to measure from on the stream bank?
A) From the center of the channel
B) From the area of wrested vegetation
C) From the area adjacent to the stream that is subject to
overflow, as indicated by water loving plants
D) From the water side edge of plants growing in the water
❖ B) From the area of wrested vegetation
A diversion constructed of compacted soil can be positioned
________ a slope.
A) Above
,Page 2 of 19
B) Across
C) Below
D) All of the above
❖ 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
❖ B) 18
A temporary down drain structure using a 12 inch pipe could
drain up to ________ acres.
A) 0.3
B) 0.5
, Page 3 of 19
C) 0.4
D) 1.0
❖ 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
❖ 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
❖ C) 640
