CEPSCI EXAM 2026|2027 QUESTIONS WITH VERIFIED ANSWERS 100%|
ALREADY GRADED A+
Silt Fence Installation - Correct Answer -Post spacing will be a max of 6-feet on center
lower edge of fabric is vertically trenched and covered by compacted backfill
place fence perpendicular from toe of steep slopes to provide sediment storage and access for
maintenance and cleanout
Silt Fence Inspection - Correct Answer -Check for erosion channels and sagging fabric, or signs of
overtopping
Sediment must be removed when it reaches 1/3 height of fence
Silt fence should be removed 30 after final site stabilization is acieved
Rock Ditch Check Description - Correct Answer -A small rock fill dam constructed across drainage ditch,
swale, or channel to lower speed of concentrated flows
Rock Ditch Check Installation - Correct Answer -Rock must be placed so that center of check is lower
than edges
Maximum spacing between dams should be such that toe of upstream check is at same elevation as top of
downstream check
1|Page
,Sediment Tube Ditch Check - Correct Answer -Elongated tubes of compacted geotextiles, curled excelsior
wood, natural coconut fiber, or hardwood mulch
Sediment tubes may be installed in drainage conveyance swales as ditch checks to help reduce soil
erosion and retain sediment
Ditch Checks should never be placed in "blue line streams" as shown on United States Geological Survey
maps (USGS)
Stabilized Construction Entrance Description - Correct Answer -A temporary stone stabilized pad located
at points of vehicular ingress and egress on site to reduce dirt brought into roadway
Stabilized Construction Entrance Installation - Correct Answer -Min dimensions should be 24-feet wide by
100-feet long
Edges should be tapered out towards road
Should consist of 2" to 3" D50 aggregate with min 6" thickness
Filter Fabric Inlet Protection Description - Correct Answer -Used for inlet protection for small storm
water flows (0.5 cfs or less) and where inlet drains relatively flat area with slopes no greater than 5%
Filter Fabric Inlet Protection Inspection - Correct Answer -Replace fabric when clogged
Remove sediment when it reaches 1/3 height of fence
2|Page
, Block And Gravel Inlet Protection - Correct Answer -Can be used where heavy flows and higher velocities
are expected and where overflow capacity is necessary to prevent excessive ponding around structure
Hardware Fabric And Stone Inlet Protection - Correct Answer -Supported wire material with filter stone
can be used where concentrated flows may be expected
Wire mesh and gravel protection is used when flows exceed 0.5 cfs and when construction traffic will
occur over inlet
Prefabricated Inlet Protection - Correct Answer -Structures designed to keep silt, sediment and
construction debris from entering pipe systems through open inlet structures
These may include but are not limited to open throat curb inlets, grate and curb applications, yard inlets,
drop inlets, and grated drop inlets
They should allow overflows to enter inlet
Section 3.2.12. Non Numeric Limits - Correct Answer -Design, install, and maintain:
Control stormwater volume and velocity within site to minimize soil erosion
Control stormwater discharges, including both peak flow and total volume
Amount, frequency, intensity and duration of precipitation
Nature of resulting stormwater runoff, and soil characteristics including the range of soil particle sizes
expected to be present on the site
3|Page
ALREADY GRADED A+
Silt Fence Installation - Correct Answer -Post spacing will be a max of 6-feet on center
lower edge of fabric is vertically trenched and covered by compacted backfill
place fence perpendicular from toe of steep slopes to provide sediment storage and access for
maintenance and cleanout
Silt Fence Inspection - Correct Answer -Check for erosion channels and sagging fabric, or signs of
overtopping
Sediment must be removed when it reaches 1/3 height of fence
Silt fence should be removed 30 after final site stabilization is acieved
Rock Ditch Check Description - Correct Answer -A small rock fill dam constructed across drainage ditch,
swale, or channel to lower speed of concentrated flows
Rock Ditch Check Installation - Correct Answer -Rock must be placed so that center of check is lower
than edges
Maximum spacing between dams should be such that toe of upstream check is at same elevation as top of
downstream check
1|Page
,Sediment Tube Ditch Check - Correct Answer -Elongated tubes of compacted geotextiles, curled excelsior
wood, natural coconut fiber, or hardwood mulch
Sediment tubes may be installed in drainage conveyance swales as ditch checks to help reduce soil
erosion and retain sediment
Ditch Checks should never be placed in "blue line streams" as shown on United States Geological Survey
maps (USGS)
Stabilized Construction Entrance Description - Correct Answer -A temporary stone stabilized pad located
at points of vehicular ingress and egress on site to reduce dirt brought into roadway
Stabilized Construction Entrance Installation - Correct Answer -Min dimensions should be 24-feet wide by
100-feet long
Edges should be tapered out towards road
Should consist of 2" to 3" D50 aggregate with min 6" thickness
Filter Fabric Inlet Protection Description - Correct Answer -Used for inlet protection for small storm
water flows (0.5 cfs or less) and where inlet drains relatively flat area with slopes no greater than 5%
Filter Fabric Inlet Protection Inspection - Correct Answer -Replace fabric when clogged
Remove sediment when it reaches 1/3 height of fence
2|Page
, Block And Gravel Inlet Protection - Correct Answer -Can be used where heavy flows and higher velocities
are expected and where overflow capacity is necessary to prevent excessive ponding around structure
Hardware Fabric And Stone Inlet Protection - Correct Answer -Supported wire material with filter stone
can be used where concentrated flows may be expected
Wire mesh and gravel protection is used when flows exceed 0.5 cfs and when construction traffic will
occur over inlet
Prefabricated Inlet Protection - Correct Answer -Structures designed to keep silt, sediment and
construction debris from entering pipe systems through open inlet structures
These may include but are not limited to open throat curb inlets, grate and curb applications, yard inlets,
drop inlets, and grated drop inlets
They should allow overflows to enter inlet
Section 3.2.12. Non Numeric Limits - Correct Answer -Design, install, and maintain:
Control stormwater volume and velocity within site to minimize soil erosion
Control stormwater discharges, including both peak flow and total volume
Amount, frequency, intensity and duration of precipitation
Nature of resulting stormwater runoff, and soil characteristics including the range of soil particle sizes
expected to be present on the site
3|Page
