NPDES LEVEL 1A PRACTICE TEST
A`slope`gradient`of`25%`(4:1)`would`indicate`that`in`a`horizontal`length`of`100`feet,`the`vert
ical`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`dist
urbing`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`Erosio
n`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`sedim
ent`entering`state`waters`from`a`land`disturbing`activity`the`officer`should`do`which`of`the`f
ollowing?
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`th
an`_____`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`slope`gradient`of`25%`(4:1)`would`indicate`that`in`a`horizontal`length`of`100`feet,`the`vert
ical`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`dist
urbing`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`Erosio
n`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`sedim
ent`entering`state`waters`from`a`land`disturbing`activity`the`officer`should`do`which`of`the`f
ollowing?
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`th
an`_____`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?
