NPDES CLASS EXAM LATEST
The purpose of a ____ is to temporarily store runoff and release it at a
controlled rate. - ANSWERS-detention basin
All inlets, outlets, and other control structures should be inspected
when? - ANSWERS-Weekly and after each major storm event.
The purpose of an underdrain is to ____ stormwater/runoff contained in
detention facilities prior to discharge to receiving waters. - ANSWERS-
filter
Underdrains and filters should be monitored after major storm events to
be sure that the required storage volume is available within how many
hours? - ANSWERS-72
By definition a swale should have side slopes no steeper than ____ -
ANSWERS-3:1
A swale is a good place to recycle yard debris since it's organic. (True /
False) - ANSWERS-False
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PAGE
1
, NPDES CLASS EXAM LATEST
Stormwater conveyance channel - ANSWERS-Is a permanent, designed
waterway; shaped and lined with appropriate material (erosion resistant):
to safely conduct (convey) runoff away from a developing area.
The purpose of a paved flume is to safely conduct runoff down the face
of a slope. (T / F) - ANSWERS-True
The purpose of a diversion is to direct stormwater to a stabilized area. (T
/ F) - ANSWERS-True
The maximum height of a check dam is ___ feet. The center of the check
dam shall be at least ___ inches lower than the outer edges. -
ANSWERS-two, six
The maximum spacing between check dams should be such that the
_____ of the upstream dam is at ____ elevation as the top of the
downstream dam. - ANSWERS-bottom, same
Sediments should be removed before they reach ___ of the original
height of the dam. - ANSWERS-half
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PAGE
2
, NPDES CLASS EXAM LATEST
outlet protection device - ANSWERS-is designed to prevent scour at
outlets and minimize erosion downstream by reducing the velocity of
concentrated stormwater flows.
The three purposes for riprap are: - ANSWERS-protect soil surface from
erosion, slow the velocity of flow, and stabilize slopes.
When placing ____ over geotextile great care must be taken to avoid
damaging the geotextile while placing the stone. - ANSWERS-riprap
In addition to technical knowledge, the inspector must be able to
effectively deal with ____. - ANSWERS-people
In dealing with the public it is most important to follow proper
procedures, and to always be ________. - ANSWERS-courteous and fair
The erosion and sediment control rules are ______. This means that the
BMPs must be ______ in controlling erosion and preventing off-site
sedimentation for the site to be in compliance. - ANSWERS-
performance oriented; effective
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3
The purpose of a ____ is to temporarily store runoff and release it at a
controlled rate. - ANSWERS-detention basin
All inlets, outlets, and other control structures should be inspected
when? - ANSWERS-Weekly and after each major storm event.
The purpose of an underdrain is to ____ stormwater/runoff contained in
detention facilities prior to discharge to receiving waters. - ANSWERS-
filter
Underdrains and filters should be monitored after major storm events to
be sure that the required storage volume is available within how many
hours? - ANSWERS-72
By definition a swale should have side slopes no steeper than ____ -
ANSWERS-3:1
A swale is a good place to recycle yard debris since it's organic. (True /
False) - ANSWERS-False
END OF
PAGE
1
, NPDES CLASS EXAM LATEST
Stormwater conveyance channel - ANSWERS-Is a permanent, designed
waterway; shaped and lined with appropriate material (erosion resistant):
to safely conduct (convey) runoff away from a developing area.
The purpose of a paved flume is to safely conduct runoff down the face
of a slope. (T / F) - ANSWERS-True
The purpose of a diversion is to direct stormwater to a stabilized area. (T
/ F) - ANSWERS-True
The maximum height of a check dam is ___ feet. The center of the check
dam shall be at least ___ inches lower than the outer edges. -
ANSWERS-two, six
The maximum spacing between check dams should be such that the
_____ of the upstream dam is at ____ elevation as the top of the
downstream dam. - ANSWERS-bottom, same
Sediments should be removed before they reach ___ of the original
height of the dam. - ANSWERS-half
END OF
PAGE
2
, NPDES CLASS EXAM LATEST
outlet protection device - ANSWERS-is designed to prevent scour at
outlets and minimize erosion downstream by reducing the velocity of
concentrated stormwater flows.
The three purposes for riprap are: - ANSWERS-protect soil surface from
erosion, slow the velocity of flow, and stabilize slopes.
When placing ____ over geotextile great care must be taken to avoid
damaging the geotextile while placing the stone. - ANSWERS-riprap
In addition to technical knowledge, the inspector must be able to
effectively deal with ____. - ANSWERS-people
In dealing with the public it is most important to follow proper
procedures, and to always be ________. - ANSWERS-courteous and fair
The erosion and sediment control rules are ______. This means that the
BMPs must be ______ in controlling erosion and preventing off-site
sedimentation for the site to be in compliance. - ANSWERS-
performance oriented; effective
END OF
PAGE
3
