CEPSCI Practice Exam 24 Exam Questions
With Accurate Solutions 2025\2026 A+ Grade
Storm Water Runoff Measures
- accurate answers-Pipe Slope Drain
Runoff Diversion Measures
Temporary Stream Crossing
Construction De-Watering
Buffers and Flow Control
Pipe Slope Drain
- accurate answers-Pipe slope drains are used when it is necessary for water
to flow down slope without causing erosion, especially before slope is been
stabilized or before permanent drainage structures are installed.
Pipe Slope Drain: Pipe Separates
- accurate answers-Reconnect pipe sections. Securely anchor and stabilize
pipe into soil. Ensure pipe joints are water tight.
Pipe Slope Drain: Pipe Outlet Erodes
- accurate answers-Repair the damage and stabilize the outlet with a flared
end section, riprap, TRM or velocity dissipation device. If necessary, reduce
flows being discharged
Pipe Slope Drain: Pipe Becomes Clogged
- accurate answers-Flush out pipe. Place a screen or grate at inlet to capture
trash and large particles.
Runoff Diversion Measures
- accurate answers-- Diversion dikes and berms (ridges of compacted soil)
used to divert upslope clean water runoff from crossing areas with high risk of
erosion
- Temporary silt ditches or swales (excavated depressions) used to direct
sediment laden runoff unto sediment control BMPs.
Runoff Diversion Measures Installation
- accurate answers-Clear and grub all objects in path of structure. Ensure
minimum constructed cross section meets all dimensions shown on plans
, Construct and stabilize using vegetation, sod, and ECBs or TRMs before any
major land disturbing activity takes place
Minimize construction traffic over dikes or berms
Inspect diversion dikes and silt ditches after specified intervals
Runoff Diversion Measures: Trouble Shooting
Dikes Wash Out
Area Behind Dikes Erode
Concentrated Flow Causes Erosion
Ditches and Swales Erode Due to High Velocity Flows
- accurate answers-1. Regrade, compact, and stabilize the soil used to build
earthen dikes
2. Stabilize the area. Use other BMPs to stabilize the uphill side of the dike
3. Stabilize area and use check dams, ECBs, TRMs, or riprap to prevent erosion
4. Stabilize and use check dams, ECBs, TRMs, or riprap to prevent erosion
Temporary Stream Crossing
- accurate answers-Typically a bridge or culvert erected to cross a running
watercourse
Construction De-watering
- accurate answers-- Construction de-watering involves removing storm
water or ground water from bore pits, trenches and other excavations
- Removal of water usually involves pumping water to appropriate receiving
area such as a sediment basin, sediment trap, or geotextile filter bag.
Construction De-watering Inspection/Maintenance
- accurate answers-Ongoing inspection is necessary to detect any issues,
discharge areas should be inspected when other practices are inspected
Construction De-watering: Troubleshooting
Discharge or treated water causes erosion
Treatment unit fills with sediment
Dewatering discharge flow is higher than expected
Water spread on the construction site is not infiltrating fast enough and is
entering the storm drain system or receiving water body
- accurate answers-1. Install outlet protection or velocity dissipation device
2. Remove sediment when unit reaches 1/3 its capacity to preserve settling
efficiency
With Accurate Solutions 2025\2026 A+ Grade
Storm Water Runoff Measures
- accurate answers-Pipe Slope Drain
Runoff Diversion Measures
Temporary Stream Crossing
Construction De-Watering
Buffers and Flow Control
Pipe Slope Drain
- accurate answers-Pipe slope drains are used when it is necessary for water
to flow down slope without causing erosion, especially before slope is been
stabilized or before permanent drainage structures are installed.
Pipe Slope Drain: Pipe Separates
- accurate answers-Reconnect pipe sections. Securely anchor and stabilize
pipe into soil. Ensure pipe joints are water tight.
Pipe Slope Drain: Pipe Outlet Erodes
- accurate answers-Repair the damage and stabilize the outlet with a flared
end section, riprap, TRM or velocity dissipation device. If necessary, reduce
flows being discharged
Pipe Slope Drain: Pipe Becomes Clogged
- accurate answers-Flush out pipe. Place a screen or grate at inlet to capture
trash and large particles.
Runoff Diversion Measures
- accurate answers-- Diversion dikes and berms (ridges of compacted soil)
used to divert upslope clean water runoff from crossing areas with high risk of
erosion
- Temporary silt ditches or swales (excavated depressions) used to direct
sediment laden runoff unto sediment control BMPs.
Runoff Diversion Measures Installation
- accurate answers-Clear and grub all objects in path of structure. Ensure
minimum constructed cross section meets all dimensions shown on plans
, Construct and stabilize using vegetation, sod, and ECBs or TRMs before any
major land disturbing activity takes place
Minimize construction traffic over dikes or berms
Inspect diversion dikes and silt ditches after specified intervals
Runoff Diversion Measures: Trouble Shooting
Dikes Wash Out
Area Behind Dikes Erode
Concentrated Flow Causes Erosion
Ditches and Swales Erode Due to High Velocity Flows
- accurate answers-1. Regrade, compact, and stabilize the soil used to build
earthen dikes
2. Stabilize the area. Use other BMPs to stabilize the uphill side of the dike
3. Stabilize area and use check dams, ECBs, TRMs, or riprap to prevent erosion
4. Stabilize and use check dams, ECBs, TRMs, or riprap to prevent erosion
Temporary Stream Crossing
- accurate answers-Typically a bridge or culvert erected to cross a running
watercourse
Construction De-watering
- accurate answers-- Construction de-watering involves removing storm
water or ground water from bore pits, trenches and other excavations
- Removal of water usually involves pumping water to appropriate receiving
area such as a sediment basin, sediment trap, or geotextile filter bag.
Construction De-watering Inspection/Maintenance
- accurate answers-Ongoing inspection is necessary to detect any issues,
discharge areas should be inspected when other practices are inspected
Construction De-watering: Troubleshooting
Discharge or treated water causes erosion
Treatment unit fills with sediment
Dewatering discharge flow is higher than expected
Water spread on the construction site is not infiltrating fast enough and is
entering the storm drain system or receiving water body
- accurate answers-1. Install outlet protection or velocity dissipation device
2. Remove sediment when unit reaches 1/3 its capacity to preserve settling
efficiency
