CESSWI ACTUAL Exam Questions and Correct
Answers Latest Update 2026/2027 | 100% Verified
Solutions.
Erosion - CORRECT ANSWER - process in which, by the actions of wind and/or water, soil
particles detached and transported
Sediment - CORRECT ANSWER - eroded material suspended in wind or water
Sedimentation - CORRECT ANSWER - deposition of eroded material
Types of Erosion - CORRECT ANSWER - splash sheet
rill
gully channel
sheet erosion - CORRECT 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 - CORRECT ANSWER - as flow concentrates, small channels begin to form
in the soil surface
Gully Erosion - CORRECT ANSWER - Formed when runoff cuts rills deeper and wider or
when flows from several rills come together and form a large channels
Splash erosion - CORRECT ANSWER - raindrop impact energy is enough to dislodge surface
sediments
Channel Erosion - CORRECT ANSWER - may become unstable due to increased flows or
changes in upstream sediment load
,Natural erosion - CORRECT ANSWER - generally considered due to the influences of climate
on the surface of the earth
Accelerated erosion - CORRECT ANSWER - natural erosion plus human activities
Problems associated with construction related erosion - CORRECT 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 - CORRECT 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 - CORRECT
ANSWER - sediment can affect
light penetration,
channel stability, fisheries and habitat
Name Off stream damages - CORRECT 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? - CORRECT
ANSWER - Urbanization and development
priority pollutants include - CORRECT ANSWER - nutrients
pathogens heavy metals toxics sediment
salts detergents
hydro carbons
Clean Water Act (CWA) - CORRECT 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
What problems can accelerated erosion cause? - CORRECT ANSWER - Unrestricted
development removal of surface cover increased imperviousness poor stewardship
Section 401 - CORRECT 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 - CORRECT ANSWER - NPDES Regs
NPDES - CORRECT ANSWER - National Pollutant Discharge Elimination System
MS4 - CORRECT ANSWER - Municipal Separate Storm Sewers Systems
, NURP - CORRECT ANSWER - Nationwide Urban Runoff Program
1987-1983 led to EPA regulating
stormwater
Phase I
(1987 - 1992) - CORRECT 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) facilities
that EPA said were significant contributors
Storm Water Implementation Rule - CORRECT ANSWER - enacted April 1992, identified
minimum requirements for NPDES stormwater permits
Section 404 - CORRECT ANSWER - regulates dredge / fill permitting into waters of the US
administered by USACE
CZARA - CORRECT ANSWER - Coastal Zone Act Reauthorization Amendments
(CZARA) of 1990 requires coastal zone states to develop Coastal Nonpoint Pollution Control
Programs
section 6217 nonpoint source in coastal areas
stormwater - CORRECT ANSWER - stormwater runoff, snow melt runoff, and surface runoff
and drainage
Answers Latest Update 2026/2027 | 100% Verified
Solutions.
Erosion - CORRECT ANSWER - process in which, by the actions of wind and/or water, soil
particles detached and transported
Sediment - CORRECT ANSWER - eroded material suspended in wind or water
Sedimentation - CORRECT ANSWER - deposition of eroded material
Types of Erosion - CORRECT ANSWER - splash sheet
rill
gully channel
sheet erosion - CORRECT 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 - CORRECT ANSWER - as flow concentrates, small channels begin to form
in the soil surface
Gully Erosion - CORRECT ANSWER - Formed when runoff cuts rills deeper and wider or
when flows from several rills come together and form a large channels
Splash erosion - CORRECT ANSWER - raindrop impact energy is enough to dislodge surface
sediments
Channel Erosion - CORRECT ANSWER - may become unstable due to increased flows or
changes in upstream sediment load
,Natural erosion - CORRECT ANSWER - generally considered due to the influences of climate
on the surface of the earth
Accelerated erosion - CORRECT ANSWER - natural erosion plus human activities
Problems associated with construction related erosion - CORRECT 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 - CORRECT 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 - CORRECT
ANSWER - sediment can affect
light penetration,
channel stability, fisheries and habitat
Name Off stream damages - CORRECT 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? - CORRECT
ANSWER - Urbanization and development
priority pollutants include - CORRECT ANSWER - nutrients
pathogens heavy metals toxics sediment
salts detergents
hydro carbons
Clean Water Act (CWA) - CORRECT 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
What problems can accelerated erosion cause? - CORRECT ANSWER - Unrestricted
development removal of surface cover increased imperviousness poor stewardship
Section 401 - CORRECT 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 - CORRECT ANSWER - NPDES Regs
NPDES - CORRECT ANSWER - National Pollutant Discharge Elimination System
MS4 - CORRECT ANSWER - Municipal Separate Storm Sewers Systems
, NURP - CORRECT ANSWER - Nationwide Urban Runoff Program
1987-1983 led to EPA regulating
stormwater
Phase I
(1987 - 1992) - CORRECT 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) facilities
that EPA said were significant contributors
Storm Water Implementation Rule - CORRECT ANSWER - enacted April 1992, identified
minimum requirements for NPDES stormwater permits
Section 404 - CORRECT ANSWER - regulates dredge / fill permitting into waters of the US
administered by USACE
CZARA - CORRECT ANSWER - Coastal Zone Act Reauthorization Amendments
(CZARA) of 1990 requires coastal zone states to develop Coastal Nonpoint Pollution Control
Programs
section 6217 nonpoint source in coastal areas
stormwater - CORRECT ANSWER - stormwater runoff, snow melt runoff, and surface runoff
and drainage
