Sedimentation and Erosion Control Certification Practice Exam

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• Why is it important to immediately stabilize disturbed areas post-grading?
• What is a common mistake in sediment control planning?
• Which law regulates stormwater discharges from construction sites in the U.S.?
• What should be done to ensure sediment does not reach a certain area?
• Why is proper soil selection crucial for erosion control?
• How can baffles in a sediment trap affect sedimentation?
• Why is it recommended to use slow-releasing fertilizers in erosion control?
• What is the maximum spacing allowed between check dams when the top of the upstream dam is at the same elevation as the top of the downstream dam?
• What is the main purpose of maintaining records of erosion and sediment control practices?
• What is the primary purpose of a stormwater management plan?
• What is sedimentation?
• Water erosion can be classified as which types?
• The function of a diversion earthen dike is primarily to manage what type of water?
• When applying straw mulch, how many bales per 1000 square feet should typically be used?
• What can be a potential consequence of failing to control erosion on a site?
• Which of the following statements regarding Type A soils is true?
• How can contour farming help in erosion control?
• Max drainage area for an inlet protection is ______.
• Which technology can be utilized to monitor erosion rates on-site?
• When starting to lay sod on a slope, from which point should the work begin?
• Which of the following is NOT a common technology used for treating turbidity?
• Why is water quality testing important in sediment control efforts?
• What is the primary purpose of a retention basin?
• The CGP permit requires sediment basins for areas _____ or more.
• A storm water event with a ______ hour break in between is still considered one storm water event.
• In large areas, compaction should be done in lifts of how many inches?
• What does compaction in site preparation refer to?
• What is one effect of poor maintenance of erosion control measures?
• What does installing silt fences primarily help to achieve?
• In a sediment trap or basin, what is the function of baffles?
• What should anchor lines be attached to according to sedimentation guidelines?
• Why is monitoring considered essential in a sediment control plan?
• Which of the following is a commonly used soil conditioner?
• When sodding, towards which direction should the work generally progress?
• When should disturbed areas be stabilized after final grading?
• How do geotextiles assist in erosion control?
• A diversion earthen dike is used to direct what into a temporary slope drain?
• What is a common method of controlling sediment during construction projects?
• What are BMPs in the context of erosion and sediment control?
• How long must a stand of vegetation be established to be considered viable?
• Before discharging water, it should be checked for which two parameters?
• Which structure is commonly used for diverting sediment-laden water?
• What does “immediate stabilization” refer to in erosion control?
• What is the main focus of BMP maintenance?
• What is a riparian buffer?
• What is the purpose of a floating turbidity curtain?
• Is it true that construction equipment should never be serviced near a live stream?
• Which element is essential for effective erosion control planning?
• Which is the primary benefit of using mulch?
• What is meant by the term ‘natural drainage systems’ in the context of erosion control?
• What role does vegetation play in erosion control?
• Which amendment can be used to lower soil pH?
• What is the function of a silt fence?
• Which practice should be avoided to minimize erosion?
• Why is sedimentation control important in construction?
• What is a sediment basin?
• What is the maximum height of a check dam?
• Prior to installing a gravel entrance, ______ should be placed on the ground.
• What is the purpose of using soil conditioners?
• What is the runoff potential characteristic of Type D soils?
• How can heavy equipment operations affect the erosion risk on a site?
• How can urban development contribute to erosion?
• What type of soil amendment is primarily used to provide essential nutrients?
• Online BMP captures how much of the runoff?
• What might indicate excessive soil erosion in a given area?
• Which materials are often used for erosion control blankets?
• What is the threshold for land disturbance that triggers the need for a CGP?
• What is one key benefit of sediment transport studies for erosion control?
• What does an online BMP capture in terms of runoff management?
• Is it true that placing two feet of fill and compacting it all at once is better than filling and compacting in 6" lifts?
• What joint arrangement is recommended when laying sod on a slope?
• Which factors influence soil erosion?
• What could occur if excessive compaction happens during retention basin construction?
• For proper installation of a silt fence, a trench ____ by _____ must be excavated.
• To minimize erosion, what should be reduced?
• Which material is commonly added to improve drainage in heavy soils?
• What type of program must be implemented for effective site management and compliance?
• Any BMP that collects sediment must be cleaned before it reaches _____ of its capacity.
• What is the maximum drainage area for a temporary sediment trap?
• What are some physical effects of erosion and sedimentation?
• The average usable life of a silt fence is ____ months.
• How often should sediment basins be inspected during construction?
• Define ‘long-term maintenance’ in relation to sediment control measures.
• How many cubic yards per acre is the initial storage capacity for a sediment trap?
• Which of the following is a common method of dewatering in Florida that produces relatively clean water?
• What is the primary function of diversion ditches?
• What is the function of an underdrain in detention facilities?
• What is the primary purpose of a sediment basin?
• What is the purpose of sediment traps in managing turbidity?
• What characteristic of vegetation helps prevent erosion?
• What is the primary function of check dams in erosion control?
• What maintenance should be performed when the voids are full of ______?
• What is an important benefit of implementing a stormwater management plan?
• What is essential for using a chemical in sedimentation control?
• Which method is often used to assess soil erosion risk on a site?
• Which of the following is NOT a type of soil condition that can be improved?
• What practices should be applied to protect disturbed areas from runoff?
• Characterize Type A soils in terms of infiltration rates and runoff potential.
• How does topography influence erosion potential?
• Which of the following is NOT a process of overland erosion?
• Which of the following is a key objective of erosion control?
• What does ‘dewatering’ involve in construction?
• Which statement accurately describes the requirement for soil disturbance activities?
• What does "slope stability" refer to in the context of erosion control?
• Which factors influence erosion rates?
• What is the appropriate placement direction for turbidity curtains relative to the flow?
• How frequently should silt fences be checked for effectiveness?
• What is meant by 'soil bioengineering' in erosion control?
• What is the primary purpose of a sediment trap?
• What technology is commonly used to treat turbidity in water?
• What is a major consequence of sedimentation in aquatic ecosystems?
• What is the primary characteristic of ‘phase-in’ criteria for erosion control measures?
• What is the primary goal of a construction site runoff control strategy?
• Which erosion type is specific to the flow of water over land?
• Should pipes and structures be backfilled and compacted in small lifts with small compactors?
• What is the primary mechanism by which land surface is worn away?
• What type of vegetation is typically most effective for erosion control?
• What does a sediment trap primarily help to manage in construction sites?
• What contributes to the effectiveness of a sediment trap?
• What effect does vegetation have on surface runoff during heavy rain?
• What is one role of vegetation in erosion control practices?
• What type of activity does EPA guidance indicate also meet the definition of construction activities?
• What defines the process of sedimentation?
• What is a construction permit in the context of erosion control?
• What is the significance of maintaining soil density in construction sites?
• What do turbidity levels in water bodies indicate?
• Which practice is commonly used to manage stormwater and reduce erosion?
• What factor is critical in the design of detention basins?
• Identify one federal agency involved in regulating water quality.
• Which situation would indicate a need for erosion control measures?
• This trench will allow ______ of fabric to extend into the ground for back-filling and compaction.
• Why is mulch often applied in erosion control efforts?
• Max drainage area for a silt fence under _____ flow conditions is ____ acre per 100 ft of barrier length.
• What role do natural fibers or mats play in erosion control?
• Which aspect of stormwater management does a retention basin primarily address?
• When should erosion control measures be implemented?
• How can storm water BMP maintenance be classified?
• What is the storage capacity of a sediment trap expressed in cubic feet per acre?
• What is the role of sediment control during winter months?
• How does rainfall intensity influence erosion?
• How often does the CGP permit require inspections to be conducted?
• Which of the following increases maintenance of stormwater systems?
• In tidal or wind conditions, how much gap should be between the curtain and the bottom of the water body?
• What is one example of a soil amendment?
• Which of the following is true about BMPs?
• In the context of sodding a slope, how should the strips be laid?
• What is the advantage of having healthy vegetation in sediment control?
• What is erosion?
• When compacting over pipes, the recommended lift thickness is how many inches?
• A temporary gravel construction entrance must extend the full width of the entrance. It must be at least _____ ft long and _____ in thick.
• What can result from increased water treatment costs due to sedimentation?
• Swales should have side slopes no steeper than what ratio?
• Which is a biological effect of erosion and sedimentation?
• What element of a sediment trap contributes to its initial storage capacity?
• In terms of erosion control, what does “ground cover” refer to?
• What impact does heavy rainfall have on erosion rates?
• In erosion control, what is the purpose of buffer strips?
• Which practices should be applied to prevent excessive on-site damage?
• How do Type D soils rank concerning infiltration rates and runoff potential?
• What is a common feature of sediment basins?
• What role does vegetation play in controlling erosion?
• A Type III floating turbidity curtain can be used in conditions with less than what flow speed?
• For drainage areas exceeding what size is a sediment basin required?
• Why is it important to properly maintain erosion control measures?
• How much lower must the center of a check dam be than its outer edges?
• What does the term 'active monitoring' in erosion control refer to?
• Which practice is often used for sediment control?
• How do perennial plants benefit erosion control compared to annual plants?
• For any type of soil disturbance over 1 acre, what permit is required?
• What is the purpose of a detention basin?
• What is defined as an "Erosion Control Plan"?
• When should detention basin inlets and other control structures be inspected?
• What role does mulch play in erosion control?
• What are indications of effective sediment control measures?
• What is one benefit of using native plants in erosion control?
• What should be done with tree root debris when clearing a site for fill?
• What should runoff velocities be kept at to effectively manage stormwater on-site?
• What practice can enhance the effectiveness of erosion control measures?
• Retention basin volume must be recovered within what time frame?
• What must be avoided when constructing a retention basin with heavy equipment?
• What is the sequence of a sediment control plan?
• In a landscape context, what does the term ‘swale’ refer to?
• What impact does urbanization have on erosion rates?
• How do retaining walls contribute to erosion control?
• Soil erosion can be classified into which two categories?
• How does vegetation contribute to reducing erosion?