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CEPSCI Exam 2024: Questions & Accurate Answers
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CEPSCI Exam 2024: Questions & Accurate Answers
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CEPSCI Exam 2024: Questions & Accurate AnswersStorm Water Runoff Measures Right Ans - Pipe Slope Drain
Runoff Diversion Measures
Temporary Stream Crossing
Construction De-Watering
Buffers and Flow Control
PIpe Slope Drain Right Ans - 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 Seperates Right Ans - Reconnect pipe sections.
Securely anchor and stabilize pipe into soil. Ensure pipe joints are water tight.
Pipe Slope Drain: Pipe Outlet Erodes Right Ans - Repair the damage and
stabilize the outlet with a flared end section, riprap, TRM or velocitiy
dissipation device. If necessary, reduce flows being discharged
Pipe Slope Drain: Pipe Becomes Clogged Right Ans - Flush out pipe. Place a
screen or grate at inlet to capture trash and large particles.
Runoff Diversion Measures Right Ans - - 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 Right Ans - 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 Right Ans - 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 Right Ans - Typically a bridge or culvert
erected to cross a running watercourse
Construction De-watering Right Ans - - 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 Right Ans - 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 Right Ans - 1.
Install outlet protection or velocity dissipation device
2. Remove sediment when unit reaches 1/3 its capacity to preserve settling
efficiency
3. Stop dewatering. Install sediment treatment system and test discharge as
necessary
Buffer Zones Right Ans - Provide and maintain natural buffers around
surface waters during construction activities
Buffer zones are located Right Ans - Between surface waters and the
outermost sediment and erosion controls at the site
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