Certified Detailed Solutions Latest Update
2025
pipe slope drain --- correct precise answers ---PSD's are used when it
is necessary for water to flow down slope without causing erosion,
especially before slope has been stabilized or before permanent
drainage structures are installed.
Runoff Diversion Measures INSTALLATION --- correct precise
answers ---Prior to swale excavation or dike building, clear and grub
all trees, brush, stumps, and other objects in path of diversion
structure.
Runoff Diverson measures DESCRIPTION --- correct precise answers -
--Diversion dikes and berms (ridges of compacted soil) are used to
,divert upslope clean water runoff from crossing areas where there is
high risk of erosion or Temporary silt ditches or swales ( excavated
depressions) are used to prevent sediment laden runoff from leaving
site before being treated by sediment control BMP
Runoff Diversion inspection/maintenance --- correct precise answers
----inspect dikes and silt ditches after specified intervals and rainfall
events
-Repair damage from construction traffic and act. before end of each
working day
-maintain dikes and ditches at original height or depth
-to remain effective, earth dikes must be compacted at all times
Temporary stream crossing DESCRIPTION --- correct precise answers
---A temp stream crossing is typically a bridge or culvert erected to
provide safe and stable way for construction vehicle traffic to cross a
running watercourse.
-TYPICALLY ONLY USED FOR DOT PROJECTS BECAUSE THEY REQUIRE
EXTRA PERMITTING(DHEC AND OR CORPS OF ENGINEERS)
Construction De-watering DESCRIPTION --- correct precise answers --
-removing storm water or ground water from bore pits, trenches, and
, other excavations. Usually involves pumping of water to sediment
basin, sediment trap, or geotextile filter bag.
De-watering inspection/maintenace --- correct precise answers ---
ongoing inspection is necessary in order to detect any malfunctions or
operation of equipment.
-Discharge areas should be inspected when other practices are
inspected.
Buffer zones --- correct precise answers ---Provide and maintain
natural buffers around surface waters during construction activities.
Buffers Maintenance --- correct precise answers ---proper
maintenance begins with flagging of the buffer and includes proper
inspection and maintenance of all BMPs discharging to the buffer
zone.
Silt fence cannot be used for --- correct precise answers ---velocity
control
Erosion prevention BMPs --- correct precise answers ----final
stabilization