CISEC Exam Questions and Correct Answers
Question 1
Which method of wind erosion moves the most soil?
Correct Answer
Saltation
Question 2
What are the three types of Wind Erosion?
Correct Answer
1. Creep - causes sand dunes
<10%
-large particle that roll across a terrain
2. Saltation - bouncing particles that DISLODGE more particles, then fall back down
~50-80%
- stay relatively close to ground
3. Suspesion - suspended way up into the atmosphere
~ 5-25%
-light weight soil particles dusted in the air
Question 3
What is the minimum number of required inspections?
Correct Answer
Once every 14 days.
Page 1 of 41
,Question 4
ECB and TRM
Correct Answer
Erosion Control Blanket and Turf Reinforcement Mats
- RECB/ECB = usually put on hillsides
- TRM = usually put on channels
Inspect:
- Has seed been planted before laying the blanket?
- Is the material anchored in a trench?
- Do sufficient staples exist (2 in. apart?)
- Are the edges secure (w staples)?
- Can you pull up the TRM 6-12'? = Not good
Question 5
Rock Check Structures: Purpose + Requirements
Correct Answer
For concentrated flows
- Slows down runoff to allow for deposition
- Captures suspended particles along the way
- Erosion control IF spaced appropriately
- MUST HAVE A LOW POINT (for overflows) and END POINTS MUST BE HIGHER
THAN OVERFLOW POINT
"U-shape"
- Tip: Draw a horizontal line from low point to ends
Question 6
Stock Pile Management
Correct Answer
- storage no longer than 6 to 12 months
- minimize compaction?
- protect from offsite flows and wind erosion
- must be accessible for adding and removing of materials
- Need BMPs that will capture runoff from the stockpile
- Check local regulations for stockpile height
Page 2 of 41
,Question 7
Types of Sediment Control BMPs
Correct Answer
- silt fences
- vehicle tracking pads
- SCS (sediment containment systems) / Filter Bags
- inlet barriers in front of "sump" D.I. or rocks around an Area Drain
- fiber rolls
- compost berms / compost socks
- bale / straw bale barriers
- rock check structure / riprap
- filter bags
Question 8
Hard Armoring
Correct Answer
Using rip rap/ rock on hillsides
-Are animals borrowing in it?
- Is sediment accumulating on rocks?
- Is the rock being undercut or collapsing?
Question 9
Inspecting Compost Berms/ Compost Socks
Correct Answer
Berms:
- Does adequate base and height exist?
- Base width = 2 x the height?
- Are the ends turned upslope to contain runoff?
- Any vehicle damage/flattening?
Socks:
- Any gaps between where socks meet?
- Is the barrier secured in the ground?
- Does runoff flow under/around/over/in between?
Page 3 of 41
, Question 10
Flocculant Treatment System Types
Correct Answer
1. Liquid Treatment System - water pumped from SCS and mixed w flocculant in a
treatment chamber then sent to a capture system where treated water can be
discharged
2. Solid Treatment System - runoff dissolves o soild flocculant "block"
-may or may not have a treatment chamber
Question 11
Raindrop Erosion
Correct Answer
dislodges many soil particles
Question 12
What is Sediment?
Correct Answer
The eroded material that settles in water or air.
Question 13
Types of Erosion Control BMPs
Correct Answer
- placement of pavement
- installing landscaping materials
- establishing vegetation (native) / seeding
- contrustion of homes
- culverts/slope drains
- diversion channels
- ECB and TRMs
Page 4 of 41
Question 1
Which method of wind erosion moves the most soil?
Correct Answer
Saltation
Question 2
What are the three types of Wind Erosion?
Correct Answer
1. Creep - causes sand dunes
<10%
-large particle that roll across a terrain
2. Saltation - bouncing particles that DISLODGE more particles, then fall back down
~50-80%
- stay relatively close to ground
3. Suspesion - suspended way up into the atmosphere
~ 5-25%
-light weight soil particles dusted in the air
Question 3
What is the minimum number of required inspections?
Correct Answer
Once every 14 days.
Page 1 of 41
,Question 4
ECB and TRM
Correct Answer
Erosion Control Blanket and Turf Reinforcement Mats
- RECB/ECB = usually put on hillsides
- TRM = usually put on channels
Inspect:
- Has seed been planted before laying the blanket?
- Is the material anchored in a trench?
- Do sufficient staples exist (2 in. apart?)
- Are the edges secure (w staples)?
- Can you pull up the TRM 6-12'? = Not good
Question 5
Rock Check Structures: Purpose + Requirements
Correct Answer
For concentrated flows
- Slows down runoff to allow for deposition
- Captures suspended particles along the way
- Erosion control IF spaced appropriately
- MUST HAVE A LOW POINT (for overflows) and END POINTS MUST BE HIGHER
THAN OVERFLOW POINT
"U-shape"
- Tip: Draw a horizontal line from low point to ends
Question 6
Stock Pile Management
Correct Answer
- storage no longer than 6 to 12 months
- minimize compaction?
- protect from offsite flows and wind erosion
- must be accessible for adding and removing of materials
- Need BMPs that will capture runoff from the stockpile
- Check local regulations for stockpile height
Page 2 of 41
,Question 7
Types of Sediment Control BMPs
Correct Answer
- silt fences
- vehicle tracking pads
- SCS (sediment containment systems) / Filter Bags
- inlet barriers in front of "sump" D.I. or rocks around an Area Drain
- fiber rolls
- compost berms / compost socks
- bale / straw bale barriers
- rock check structure / riprap
- filter bags
Question 8
Hard Armoring
Correct Answer
Using rip rap/ rock on hillsides
-Are animals borrowing in it?
- Is sediment accumulating on rocks?
- Is the rock being undercut or collapsing?
Question 9
Inspecting Compost Berms/ Compost Socks
Correct Answer
Berms:
- Does adequate base and height exist?
- Base width = 2 x the height?
- Are the ends turned upslope to contain runoff?
- Any vehicle damage/flattening?
Socks:
- Any gaps between where socks meet?
- Is the barrier secured in the ground?
- Does runoff flow under/around/over/in between?
Page 3 of 41
, Question 10
Flocculant Treatment System Types
Correct Answer
1. Liquid Treatment System - water pumped from SCS and mixed w flocculant in a
treatment chamber then sent to a capture system where treated water can be
discharged
2. Solid Treatment System - runoff dissolves o soild flocculant "block"
-may or may not have a treatment chamber
Question 11
Raindrop Erosion
Correct Answer
dislodges many soil particles
Question 12
What is Sediment?
Correct Answer
The eroded material that settles in water or air.
Question 13
Types of Erosion Control BMPs
Correct Answer
- placement of pavement
- installing landscaping materials
- establishing vegetation (native) / seeding
- contrustion of homes
- culverts/slope drains
- diversion channels
- ECB and TRMs
Page 4 of 41
