CESSWI Exam Latest Questions and
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• Erosion . Answer: process in which, by the actions of wind and/or water, soil
particles detached and transported
• Sediment . Answer: eroded material suspended in wind or water
• Sedimentation . Answer: deposition of eroded material
• Types of Erosion . Answer: splash
sheet
rill
gully
channel
• Splash erosion . Answer: raindrop impact energy is enough to dislodge surface
sediments
• sheet erosion . Answer: caused by rain splash detaching soil particles lifting them
up and removing them by shallow "sheets" of water flowing down the sloped soil
surface
• Rill Erosion . Answer: as flow concentrates, small channels begin to form in the
soil surface
,• Gully Erosion . Answer: Formed when runoff cuts rills deeper and wider or when
flows from several rills come together and form a large channels
• Channel Erosion . Answer: may become unstable due to increased flows or
changes in upstream sediment load
• Natural erosion . Answer: generally considered due to the influences of climate
on the surface of the earth
• Accelerated erosion . Answer: natural erosion plus human activities
• What problems can accelerated erosion cause? . Answer: Unrestricted
development
removal of surface cover
increased imperviousness
poor stewardship
• Problems associated with construction related erosion . Answer: problems for
down slope property owners
nuisance problems on streets
clog streams and storm drains
increased turbidity downstream
cover sensitive habitat with sediment
• Identify instream damages of sediment . Answer: destruction of spawning areas,
food sources, habitat
direct toxicity to wildlife
,lake degradation
filling of navigation channels
impacts to commercial fisheries
reduction of water storage capacities
• Suspended material . Answer: sediment can affect light penetration, channel
stability, fisheries and habitat
• Name Off stream damages . Answer: Increased flood hazards
increased water treatment costs
decreased capacity in conveyance facilities
higher infrastructure maintenance costs
• What has increased the amount of impervious surface in our watersheds? .
Answer: Urbanization and development
• priority pollutants include . Answer: nutrients
pathogens
heavy metals
toxics
sediment
salts
detergents
hydro carbons
, • Clean Water Act (CWA) . Answer: Federal Water Pollution Control Act enacted
to restore and maintain the chemical, physical and biological integrity of the waters
of the US
administered by USEPA
• Section 401 . Answer: water quality certification
requires applicant, including any construction or operation of a facility, to obtain
certification to discharge ANY pollutant.
administered by the State
• Section 402 . Answer: NPDES Regs
• NPDES . Answer: National Pollutant Discharge Elimination System
• MS4 . Answer: Municipal Separate Storm Sewers Systems
• NURP . Answer: Nationwide Urban Runoff Program
1987-1983
led to EPA regulating stormwater
• Phase I
(1987 - 1992) . Answer: already covered by NPDES permit
facilities that engage in industrial activity
Large municipal storm systems (>250,000)
Medium municipal storms systems (100 - 250 K)
Answers | Professional Prep with
Verified Answers | A+ Verified
• Erosion . Answer: process in which, by the actions of wind and/or water, soil
particles detached and transported
• Sediment . Answer: eroded material suspended in wind or water
• Sedimentation . Answer: deposition of eroded material
• Types of Erosion . Answer: splash
sheet
rill
gully
channel
• Splash erosion . Answer: raindrop impact energy is enough to dislodge surface
sediments
• sheet erosion . Answer: caused by rain splash detaching soil particles lifting them
up and removing them by shallow "sheets" of water flowing down the sloped soil
surface
• Rill Erosion . Answer: as flow concentrates, small channels begin to form in the
soil surface
,• Gully Erosion . Answer: Formed when runoff cuts rills deeper and wider or when
flows from several rills come together and form a large channels
• Channel Erosion . Answer: may become unstable due to increased flows or
changes in upstream sediment load
• Natural erosion . Answer: generally considered due to the influences of climate
on the surface of the earth
• Accelerated erosion . Answer: natural erosion plus human activities
• What problems can accelerated erosion cause? . Answer: Unrestricted
development
removal of surface cover
increased imperviousness
poor stewardship
• Problems associated with construction related erosion . Answer: problems for
down slope property owners
nuisance problems on streets
clog streams and storm drains
increased turbidity downstream
cover sensitive habitat with sediment
• Identify instream damages of sediment . Answer: destruction of spawning areas,
food sources, habitat
direct toxicity to wildlife
,lake degradation
filling of navigation channels
impacts to commercial fisheries
reduction of water storage capacities
• Suspended material . Answer: sediment can affect light penetration, channel
stability, fisheries and habitat
• Name Off stream damages . Answer: Increased flood hazards
increased water treatment costs
decreased capacity in conveyance facilities
higher infrastructure maintenance costs
• What has increased the amount of impervious surface in our watersheds? .
Answer: Urbanization and development
• priority pollutants include . Answer: nutrients
pathogens
heavy metals
toxics
sediment
salts
detergents
hydro carbons
, • Clean Water Act (CWA) . Answer: Federal Water Pollution Control Act enacted
to restore and maintain the chemical, physical and biological integrity of the waters
of the US
administered by USEPA
• Section 401 . Answer: water quality certification
requires applicant, including any construction or operation of a facility, to obtain
certification to discharge ANY pollutant.
administered by the State
• Section 402 . Answer: NPDES Regs
• NPDES . Answer: National Pollutant Discharge Elimination System
• MS4 . Answer: Municipal Separate Storm Sewers Systems
• NURP . Answer: Nationwide Urban Runoff Program
1987-1983
led to EPA regulating stormwater
• Phase I
(1987 - 1992) . Answer: already covered by NPDES permit
facilities that engage in industrial activity
Large municipal storm systems (>250,000)
Medium municipal storms systems (100 - 250 K)
