Exam (elaborations)
CESSWI PART 2 QUESTIONS AND ANSWERS 2024
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CESSWI PART 2 QUESTIONS AND ANSWERS 2024
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CESSWI PART 2Turbidity Curtain/Barrier desc/purp - ANSWERS-structural BMPs designed to
reduce or eliminate debris, turbidity and sediment transport from a disturbed
area adjacent to or within a body of water.
Turbidity Curtain/Barrier objectives - ANSWERS-Sediment Control
Turbidity Curtain/Barrier applications - ANSWERS-Tidal or non-tidal waterways
where intrusion of pollutants from site
related activity and sediment movement cannot be avoided
Working adjacent to a waterway
Working in a waterway
When dewatering discharge enters directly into a water body
Turbidity Curtain/Barrier inspections - ANSWERS-Installation of barrier according
to the Plan/SWPPP
Installation could be parallel or perpendicular to the direction of flow
Barrier ends extending onto the shoreline and stream bank are
properly anchored
The correct number and spacing of anchors and stakes
Barrier extending to the entire depth of the waterbody when not subject
to tidal action or wave/wind forces
,Barrier existing above the waterbody bottom when subject to tidal
action or wave/wind forces
Structural integrity of materials and joints/
Turbidity Curtain/Barrier maintenance - ANSWERS-Removal of sediment from the
barrier, if the result of such removal will
not create a larger problem
Repairing tears or damage to barrier materials
Repairing/replacing barrier anchors and stakes
Gabions desc and purp - ANSWERS-structural BMP utilizing wire baskets filled
with stone
to achieve structural purposes (building walls, lining channels, etc.). The baskets
may be used in conjunction with geotextiles to assist in filtration.
gabions objectives - ANSWERS-Runoff Control
Erosion Control
Sediment Control
Post-Construction Management
gabions applications - ANSWERS-Channel linings
Retaining walls
Shore protection
,Slope protection
Stream bank protection
Weir
Outlet aprons
gabions inspection - ANSWERS-Inspect according to regulatory timetables
Verify correct foundation, material, filling of baskets, placement
Undercutting, or erosion at transition areas
Corrosion of metal basket material holding rock
Suitability of rock material (sizing and durability)
Proper selection of basket materials (especially important in oceanic or
industrial areas)
gabions maintenance - ANSWERS-Replace wire holding baskets when damage is
encountered
Repair geotextiles when damaged, if used
Inlet Protection at Grade desc/purp - ANSWERS-structural BMP that protects
inlets that are flush
with the ground, or at grade (drop or yard inlets) which receives stormwater from
disturbed areas of the construction site. This inlet protection may
include any of a number of above ground constructions.
, Inlet Protection at Grade objectives - ANSWERS-Runoff Control
Sediment Control
Inlet Protection at Grade applications - ANSWERS-Where additional sediment
control is needed
Where other surface protection is prohibited due to:
the presence of vehicular traffic
safety hazards
regulations
Along highways where grates are used in combination with curb inlets
Inlet Protection at Grade inspection - ANSWERS-Protection fitting grate
dimensions
Rips, tears, or other damage to materials
Sediment accumulation
Install according to the Plan/SWPPP
Check for bypass
Inlet Protection at Grade maintenance - ANSWERS-Maintenance for storm inlet
covers is fairly intense, due to the clogging of filtering material.
Remove accumulated sediment
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